Prof. Dr.-Ing. Hermann Rottengruber
Energy Conversion Systems for Mobile Applications (IEPS)
- seit 08/2013 Leiter des Instituts für Mobile Systeme der Otto-von-Guericke Universität Magdeburg
- seit 09/2012 Lehrstuhlleiter für Energiewandlungssysteme für mobile Anwendungen am Institut für Mobile Systeme der OvGU
- 11/2011 – 05/2012 Projekt- & Teamleiter für Thermische Energiewandlung bei der BMW Forschung & Technik GmbH der BMW AG in München
- 07 / 2011 Ruf an die Otto-von-Guericke Universität Magdeburg (angenommen 12/2011)
- 12/2004 – 10/2011 Leiter der Brennverfahrensentwicklung für Ottomotoren in der Antriebs-Vorentwicklung der BMW AG
- Schwerpunkte:
- Konzepte & Brennverfahren für hoch-aufgeladene Otto-DI-Motoren
- Motorkonzepte & Betriebsstrategien für Hybridantriebe
- Hochrestgasbrennverfahren, HCCI
- Ottomotorische Magerbrennverfahren & Abgasnachbehandlung
- Alternative Kraftstoffe
- Energiemanagement
- Projektleitung von Vorentwicklungsprojekten
- Technische Leitung von Motorprojekten in der Initialphase
- Forschungskooperation und Hochschulkontakte
- Vertreter der BMW AG im Rahmen der FVV (Forschungs- vereinigung Verbrennungskraftmaschinen) Planungsgruppe 2 Thermodynamik - bis 05/2012
- 11/2003 – 11/2004 Gesamtverantwortlicher für Wasserstoffbrennverfahren in der Antriebs-Vorentwicklung der BMW AG
- 07/2001 – 10/2003 Wasserstoffmotor-Entwicklung in im Rahmen der Antriebs- Vorentwicklung der BMW AG zuständig für H2-Brennverfahren
- 11/2000 – 07/2001 Entwicklungsingenieur bei der BMW AG in der Serien- entwicklung - Abteilung Otto-DI Motoren
- 1/2000 – 10/2000 Versuchssachbearbeiter Vorentwicklung und Thermodynamik im Team Grundmotor & Brennverfahren bei der AUDI AG in Ingolstadt
- Juni 99 Abschluss der Promotion zum Dr.-Ing. Dissertationsthema: Untersuchung der Stickoxidbildung an einem Wasserstoff-Dieselmotor
- 9/1995 – 12/1999 Technische Universität München: Wissenschaftlicher Angestellter am Institut für Verbrennungskraftmaschinen und Kraftfahrzeuge
- Forschungsarbeit: „Direkteinspritzender Wasserstoff- Dieselmotor“
- 11/1989 - 7/1995 Studium Maschinenbau an der TU München Fachrichtung Konstruktion und Entwicklung thematische Schwerpunkte: Verbrennungsmotoren, Fahrzeugtechnik & Verkehrstechnik Abschluss: Dipl.-Ing. (Univ.)
2024
Book chapter
Influence of the design of an electric Powertrain (FCEV / BEV) on the use of rare earths
Konradt, Swantje; Rottengruber, Hermann
In: Proceedings of the 45th International Vienna Motor Symposium 24 - 26 April 2024 , 1. Auflage - Wien : Österreichischer Verein für Kraftfahrzeugtechnik (ÖVK) ; Bernhard, Geringer, insges. 13 S. [Symposium: 45th International Vienna Motor Symposium, Wien, 24-26 May 2024]
Enhancing vibroacoustic performance of power electronic subsystem in electric drives using particle dampers
Prasad, Braj Bushan; Luft, Tommy; Rottengruber, Hermann
In: Tagungsband - Proceedings "Fortschritte der Akustik - DAGA 2024" , 2024 - Berlin : Deutsche Gesellschaft für Akustik e.V. ; Peissig, Jürgen *1960-*, S. 503-506 [Tagung: DAGA 2024, Hannover, 18. - 21. März 2024]
Dissertation
Beitrag zum Energiemanagement eines Fahrzeug-Brennstoffzellen-Systems
Konradt, Swantje Clara; Rottengruber, Hermann
In: Magdeburg: Universitätsbibliothek, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2024, 1 Online-Ressource (IX, 113 Seiten, 5,7 MB) [Literaturverzeichnis: Seite 105-113][Literaturverzeichnis: Seite 105-113]
Thermodynamische Untersuchung des Einflusses der Wassereinspritzung auf die Effizienz des ottomotorischen Arbeitsprozesses
Helmich, Matthias; Rottengruber, Hermann; Krüger, Manja
In: Düren: Shaker Verlag, 2024, Dissertation Otto-von-Guericke-Universität Magdeburg 2023, xx, 183 Seiten - (Berichte aus dem Maschinenbau), ISBN: 3-8440-9574-8 [Literaturverzeichnis: Seite 163-170][Literaturverzeichnis: Seite 163-170]
Article in conference proceedings
Comparison of active and passive vibration control techniques for electric drive power electronic subsystem - experimental validation
Prasad, Braj Bhushan; Luft, Tommy; Rottengruber, Hermann
In: INTER-NOISE and NOISE-CON Congress and Conference Proceedings - Ingenta . - 2024, S. 1514-1525 [Konferenz: INTER-NOISE24, Nantes, France, 25-29 August 2024]
2023
Book chapter
Experimental investigation of the influence of compression ratio and inert gas on the spark-ignited argon power cycle
Kniestedt, Lukas; Cech, Manuel; Mahler, Kai; Reiser, Christian; Rottengruber, Hermann
In: Proceedings of the 44th International Vienna Motor Symposium ; Volume 3: Galerie, Virtual Hall / Internationales Wiener Motorensymposium , 2023 - Vienna, Austria : Österreichischer Verein für Kraftfahrzeugtechnik (ÖVK) ; Geringer, Bernhard *1958-*, S. 1073-1086 [Symposium: 44th International Vienna Motor Symposium, Vienna, 26-28 April 2023]
Strategic operational management of a hydrogen multi-spherical storage system for commercial vehicles
Klepatz, Kevin; Jeske, Jan-Christoph; Behn, Matthias; Rottengruber, Hermann
In: Proceedings of the 44th International Vienna Motor Symposium ; Volume 2: Zeremoniensaal / Internationales Wiener Motorensymposium , 2023 - Vienna, Austria : Österreichischer Verein für Kraftfahrzeugtechnik (ÖVK) ; Geringer, Bernhard *1958-*, S. 903-923 [Symposium: 44th International Vienna Motor Symposium, Vienna, 26-28 April 2023]
Analyse der Wasserstoffverbrennung eines Nutzfahrzeugmotors mittels 1D-Simulation und darauf aufbauende CFD Simulation
Wintergoller, Dmitrij; Dafis, Aristidis; Rottengruber, Hermann
In: Proceedings 12. Tagung Einspritzung und Kraftstoffe / Tschöke , Helmut , 1. Auflage - Rostock : Forschungszentrum für Verbrennungsmotoren und Thermodynamik Rostock GmbH ; Tschöke, Helmut . - 2023, S. 182-198
Design and implementation of the fuel cell test benches at the Center for Method Development
Swantje, Konradt; Rottengruber, Hermann
In: International AVL Electric Powertrain Testing Symposium / International AVL Electric Powertain Testing Symposium , 2023 - [Mainz-Kastel, Deutschland] : [AVL Deutschland GmbH], insges. 9 S. [Symposium: 15. International AVL Electric Powertrain Testing Symposium, Würzburg, 20.-21.06.2023]
Peer-reviewed journal article
Experimental investigation of thermal swing piston insulation at single cylinder gasoline engine
Weßling, Danny; Rottengruber, Hermann; Achenbach, Jens; Fischer, Torsten
In: Automotive and engine technology - [Cham, Switzerland] : Springer International Publishing, Bd. 8 (2023), Heft 2, S. 95-107
Dissertation
Entwicklung einer Methodik zur Bewertung und Optimierung des vibroakustischen Verhaltens von Kraftstoffeinspritzsystemen
Mühlbauer, Christian; Rottengruber, Hermann; Verhey, Jesko L.
In: Magdeburg: Universitätsbibliothek, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2023, 1 Online-Ressource (XII, 119 Seiten, 5,23 MB) [Literaturverzeichnis: Seite 111-119][Literaturverzeichnis: Seite 111-119]
Interactions between exhaust gas recirculation and efficiency during the dynamic operation of turbocharged SI engines
Langmandel, Daniel; Rottengruber, Hermann
In: Magdeburg: Universitätsbibliothek, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2023, 1 Online-Ressource (XVII, 152 Blätter, 6,45 MB) [Literaturverzeichnis: Blatt 132-139][Literaturverzeichnis: Blatt 132-139]
Editor
Aggregate- und Antriebsakustik - 12. Magdeburger Symposium, 28. und 29. Juni 2023 : Tagungsband
Rottengruber, Hermann; Luft, Tommy
In: Magdeburg: Universitätsbibliothek, 2023, 1 Online-Ressource (195 Seiten, 31,97 MB), ISBN: 978-3-948749-36-1 Kongress: Symposium "Aggregate- und Antriebsakustik" 12 Magdeburg 2023.06.28-29
Article in conference proceedings
Aufladung von Wasserstoff-Kreislaufmotoren - ein Vergleich grundsätzlicher Topologien
Wintergoller, Dmitrij; Dafis, Aristidis; Rottengruber, Hermann
In: 27. Aufladetechnische Konferenz , 2023 - ]Dresden] : [Technische Universität Dresden] ; Zellbeck, Hans *1950-*, insges. 18 S.
Non-peer-reviewed journal article
Analysis of Hydrogen Combustion in a Commercial Vehicle Engine Using 1D Simulation and Subsequent CFD Simulation
Wintergoller, Dmitrij; Dafis, Aristids; Rottengruber, Hermann
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2023, Artikel 2023-01-1642
Real-time simulation of CNG engine and after-treatment system cold start. Part 1: Transient engine-out emission prediction using a stochastic reactor model
Leon de Syniawa, Larisa; Siddareddy, Reddy Babu; Oder, Johannes; Franken, Tim; Guenther, Vibien; Rottengruber, Hermann; Mauss, Fabian
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2023, Artikel 2023-01-0183
Real-time simulation of CNG engine and after-treatment system cold start. Part 2: Tail-pipe emissions prediction using a detailed chemistry based MOC model
Leon de Syniawa, Larisa; Siddareddy, Reddy Babu; Oder, Johannes; Franken, Tim; Guenther, Vibien; Rottengruber, Hermann; Mauss, Fabian
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2023, Artikel 2023-01-0364
Leveraging historical thermal wind tunnel data for ML-based predictions of component temperatures for a new vehicle project
Freytag, Lukas; Enke, Wolfram; Rottengruber, Hermann
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2023, Artikel 2023-01-1216
3DCFD-modeling of a hydrogen combustion-process with regard to simulation stability and emissions
Dafis, Aristids; Rottengruber, Hermann; Jochmann, Paul
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2023, Artikel 2023-01-1209
2022
Peer-reviewed journal article
Die Akustik neuer Antriebskonzepte im Rahmen der Mobilitätswende
Duvigneau, Fabian; Schneider, Sebastian; Doleschal, Florian; Luft, Tommy; Rottengruber, Hermann; Verhey, Jesko L.
In: Akustik Journal - Berlin : DEGA . - 2022, Heft 1, S. 7-22
Psychoakustische Bewertung verbrennungsmotorischer Geräusche
Schneider, Sebastian; Doleschal, Florian; Rottengruber, Hermann; Verhey, Jesko L.
In: Automobiltechnische Zeitschrift - Wiesbaden : Vieweg, Bd. 124 (2022), Heft 1, S. 56-61
Hybrid model for exhaust systems in vehicle thermal management simulations
Ahmed, Saad; Rottengruber, Hermann; Full, Markus
In: Automotive and engine technology - [Cham, Switzerland] : Springer International Publishing, Bd. 7 (2022), Heft 1, S. 115-136
Besondere Anforderungen an die Material- und Bauteilauslegung
Rottengruber, Hermann; Wintergoller, Dmitrij
In: Giesserei - Düsseldorf : DVS Media GmbH, Bd. 109 (2022), Heft 4, S. 28-32
Dissertation
Perception of vehicle interior sounds with electrified drives - measurements and pleasantness estimations using a long short-term memory model$dFlorian Doleschal
Doleschal, Florian; Rottengruber, Hermann; Verhey, Jesko L.
In: Berlin: Logos Verlag, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2022, XIV, 154 Seiten, ISBN: 978-3-8325-5590-0 [Literaturverzeichnis: Seite 121-134][Literaturverzeichnis: Seite 121-134]
Charakterisierung verschiedener Wassereinspritztechnologien für Ottomotoren
Weber, Sebastian; Rottengruber, Hermann; Koch, Thomas
In: Magdeburg: Universitätsbibliothek, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2022, 1 Online-Ressource (xix, 151 Seiten, 26,4 MB) [Literaturverzeichnis: Seite 119-127][Literaturverzeichnis: Seite 119-127]
Article in conference proceedings
Thermodynamic analysis of a hydrogen reconversion system - the closed-cycle engine
Klepatz, Kevin; Tempelhagen, Robin; Dafis, Aristidis; Rottengruber, Hermann; Oder, Johannes
In: COMODIA 2022 - Tokyo : JSME, S. 255-261 [Konfeenz: 10th International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2022), Sapporo, Japan, July 5-8, 2022,]
Study on supercharging concepts for a H2NG combustion engine - Studie zu Aufladekonzepten für einen H2NG-Verbrennungsmotor
Wintergoller, Dmitrij; Klepatz, Kevin; Rottengruber, Hermann; Lazar, Arne
In: 27. Aufladetechnische Konferenz 2022 - Dresden : [Technische Universität Dresden], Artikel 23, insges. 2 S.
Influencing the wall heat losses of the SI engine by coatings in combination with Miller combustion process - Beeinflussung der Wandwärmeverluste des Ottomotors mittels Beschichtung in Kombination mit Miller-Brennverfahren
Achenbach, Jens; Günther, Marco; Weßling, Danny; Fischer, Torsten; Kuhn, Bernd; Rottengruber, Hermann
In: Abschluss- und Zwischenberichte der Forschungsstellen / Forschungsvereinigung Verbrennungskraftmaschinen , 2022 - Frankfurt am Main, Germany : Forschungsvereinigung Verbrennungskraftmaschinen e.V. (FFV), S. 267-307 - (Forschungsvereinigung Verbrennungskraftmaschinen; R; 602) [Tagung: FVV Spring Conference, Würzburg, 31.03.2022]
Potential analysis of a hydrogen CI engine within a closed work-ing gas circuit - Potenzialanalyse eines selbstgezündeten Wasserstoffverbrennungsmotors im geschlossenen Arbeitsgas-Kreislauf
Klepatz, Kevin; Tempelhagen, Robin; Dafis, Aristidis; Rottengruber, Hermann
In: Abschluss- und Zwischenberichte der Forschungsstellen / Forschungsvereinigung Verbrennungskraftmaschinen , 2022 - Frankfurt am Main, Germany : Forschungsvereinigung Verbrennungskraftmaschinen e.V. (FFV), S. 343-370 - (Forschungsvereinigung Verbrennungskraftmaschinen; R; 602) [Tagung: FVV Spring Conference, Würzburg, 31.03.2022]
Potential analysis of an emission-free hydrogen closed-cycle-engine
Klepatz, Kevin; Tempelhagen, Robin; Dafis, Aristidis; Rottengruber, Hermann; Kniestedt, Lukas; Cech, Manuel
In: 43rd International Vienna Motor Symposium - Vienna, Austria : Österreichischer Verein für Kraftfahrzeugtechnik . - 2022, insges. 18 S. [Konferenz: 43rd International Vienna Motor Symposium, Wien, 27 - 29 April 2022]
Simulation of the cold start behaviour of exhaust aftertreatment systems for natural gas engines - Simulation des Kaltstartverhaltens von Abgasnachbehandlungssystemen für Erdgasmotoren
Mauß, Fabian; Rottengruber, Hermann; Buchholz, Bert
In: Abschluss- und Zwischenberichte der Forschungsstellen / Forschungsvereinigung Verbrennungskraftmaschinen , 2022 - Frankfurt am Main, Germany : Forschungsvereinigung Verbrennungskraftmaschinen e.V. (FFV), S. 9-43 - (Forschungsvereinigung Verbrennungskraftmaschinen; R; 602) [Tagung: FVV Spring Conference, Würzburg, 31.03.2022]
Numerical and experimental investigation of an active pre-chamber spark plug for high-speed natural gas engines
Stenzel, Karsten; Sazonov, Vladyslav; Rottengruber, Hermann; Cheng, Chi; Duill, Finn; Rotter, Max; Janas, Peter
In: 12. Dessauer Gasmotoren-Konferenz - Dessau-Roßlau : WTZ Roßlau . - 2022, insges. 19 S. [Konferenz: 12. Dessauer Gasmotoren-Konferenz, Dessau, 5.-6. Mai 2022]
Non-peer-reviewed journal article
A modular methodology for complete vehicle thermal management simulations
Ahmed, Saad; Full, Markus; Rottengruber, Hermann
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2022, Artikel 2022-01-5064, insges. 27 S.
2021
Book chapter
Tickergeräuschanalyse an einem Otto-DI-Motor mittels empirischer Bewertungsformel
Schneider, Sebastian; Mühlbauer, Christian; Sittl, Christopher; Rottengruber, Hermann; Rabl, Hans-Peter; Wagner, Marcus; Verhey, Jesko L.
In: Motor- und Aggregate-Akustik - 11. Magdeburger Symposium : Tagungsband [2021] - Magdeburg : Universitätsbibliothek, S. 65-86 [Tagung: Motor- und Aggregate-Akustik : 11. Magdeburger Symposium, 2021]
Definition der optimalen Batteriekapazität eines PEM-Brennstoffzellen-Fahrzeuges
Konradt, Swantje; Lazar, Arne; Rottengruber, Hermann
In: Der Antrieb von morgen 2020 / Internationale MTZ-Fachtagung , 2019 , 1. Auflage 2021 - Wiesbaden : Springer Fachmedien Wiesbaden GmbH ; Liebl, Johannes, S. 12
CNG-DI-Engine at = 1-Operation with Highload-EGR
Oder, Johannes; Rottengruber, Hermann; Wouters, Christian; Günther, Marco; Pischinger, Stefan
In: 21. Internationales Stuttgarter Symposium , 1st ed. 2021. - Wiesbaden : Springer Fachmedien Wiesbaden ; Bargende, Michael, S. 353-376 [Symposium: 21. Internationales Stuttgarter Symposium Automobil- und Motorentechnik]
Akustische Optimierung von mechatronischen Direkteinspritzsystemen und Analyse der Auswirkungen auf die Robustheit im Systembetrieb
Mühlbauer, Christian; Rabl, Hans-Peter; Rottengruber, Hermann
In: Motor- und Aggregate-Akustik - 11. Magdeburger Symposium : Tagungsband [2021] - Magdeburg : Universitätsbibliothek, S. 32-51 [Tagung: Motor- und Aggregate-Akustik : 11. Magdeburger Symposium, 2021]
Wasserstoff als Kraftstoff
Rottengruber, Hermann; Wintergoller, Dmitrij
In: Gießtechnik im Motorenbau 2021 / VDI-Tagung Gießtechnik im Motorenbau , 2021 - Düsseldorf : VDI Verlag GmbH, S. 35-50 - (VDI-Berichte; 2386) [Tagung: 11. VDI-Tagung Gießtechnik im Motorenbau 2021, Magdeburg, 27. - 28.10.2021]
Peer-reviewed journal article
Investigations for a trajectory variation to improve the energy conversion for a four-stroke free-piston engine
Tempelhagen, Robin; Gerlach, Andreas; Benecke, Sebastian; Klepatz, Kevin; Leidhold, Roberto; Rottengruber, Hermann
In: Applied Sciences - Basel : MDPI, Bd. 11 (2021), Heft 13, insges. 30 S.
Optimierung des Motorwassermantels vom Konzept bis zur Fertigungsreife
Wagner, Thilo André; Rottengruber, Hermann; Mandl, Florian; Grill, Michael
In: Motortechnische Zeitschrift - Wiesbaden : Vieweg, Bd. 82 (2021), Heft 4, S. 62-67
Determination of the optimal battery capacity of a PEM fuel cell vehicle taking into account recuperation and supercapacitors
Konradt, Swantje C.; Rottengruber, Hermann
In: Automotive and engine technology - [Cham, Switzerland] : Springer International Publishing, Bd. 6 (2021), Heft 3-4, S. 181-189
Investigation of deviations in SI-engine behaviour due to manufacturing tolerances in cylinder heads
Zeilinga, Stephan; Rottengruber, Hermann; Dafis, Aristidis; Wagner, Alexander; Stolt, Torsten; Feikus, Franz Josef
In: Automotive and engine technology - [Cham, Switzerland] : Springer International Publishing, Bd. 6 (2021), Heft 3/4, S. 147-158
CNG-DI-Brennverfahren in Kombination mit Hochlast-AGR und Miller-Verfahren
Oder, Johannes; Wouters, Christian; Rottengruber, Hermann; Pischinger, Stefan
In: Motortechnische Zeitschrift - Wiesbaden : Vieweg, Bd. 82 (2021), S. 88-92
Influence parameters on the perceived magnitude of tonal content of electric vehicle interior sounds
Doleschal, Florian; Rottengruber, Hermann; Verhey, Jesko L.
In: Applied acoustics - Amsterdam [u.a.] : Elsevier, Bd. 181 (2021), Artikel 108155
Psychoacoustic evaluation of internal combustion engine noises
Schneider, Sebastian; Luft, Tommy; Rottengruber, Hermann
In: Automotive and engine technology - [Cham, Switzerland] : Springer International Publishing, Bd. 6 (2021), Heft 3-4, S. 261-274
Dissertation
Psychoakustische Bewertung verbrennungsmotorischer Geräusche
Schneider, Sebastian; Rottengruber, Hermann; Verhey, Jesko L.
In: Magdeburg: Universitätsbibliothek, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2021, 1 Online-Ressource (XII, 129 Seiten, 23,09 MB) [Literaturverzeichnis: Seite 123-127][Literaturverzeichnis: Seite 123-127]
Modular methodology for transient vehicle thermal management simulations
Ahmed, Saad; Rottengruber, Hermann; Thévenin, Dominique
In: Magdeburg, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2021, XIII, 144 Blätter [Literaturverzeichnis: Blatt 126-136][Literaturverzeichnis: Blatt 126-136]
Regelung von direktangetriebenen elektrischen Maschinen für Verbrennungsmotoren
Gerlach, Andreas; Leidhold, Roberto; Rottengruber, Hermann
In: Magdeburg, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Elektrotechnik und Informationstechnik 2021, 176 Seiten [Literaturverzeichnis: Seite 165-176][Literaturverzeichnis: Seite 165-176]
Editor
Motor- und Aggregate-Akustik - 11. Magdeburger Symposium : Tagungsband [2021]
Rottengruber, Hermann; Luft, Tommy; Schneider, Sebastian
In: Magdeburg: Universitätsbibliothek, 2021, 1 Online-Ressource (133 Seiten, 12,28 MB), ISBN: 978-3-948749-02-6 Kongress: Magdeburger Akustik-Symposium 11 Magdeburg 2021[Auf Grund der COVID-19-Pandemie musste das Symposium abgesagt werden. Dieser Band enthält eine Auswahl der geplanten Beiträge.]
Non-peer-reviewed journal article
Analysis of a Gas Engine with Arbitrary Mixture Ratio of H 2 and CNG for HDV
Klepatz, Kevin; Tempelhagen, Robin; Rottengruber, Hermann
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. . - 2021, Artikel Technical paper 2021-01-77
Acoustic optimization of mechatronic direct injection systems and analysis of the effects on robustness in system operation
Rottengruber, Hermann; Mühlbauer, Christian; Rabl, Hans-Peter
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. - 2021, Technical paper 2021-01-0671
Application of a novel laser-optic method for characterizing various water injection technologies for modern gasoline engines
Rottengruber, Hermann; Weber, Sebastian; Kutza, Susanne; Eigenschenk, Robert; Rubbert, Stephan
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. - 2021, Technical paper 2021-01-5025
2020
Abstract
Tonality benchmark analysis for electric vehicle interior noise
Doleschal, Florian; Hots, Jan; Verhey, Jesko L.; Oetjen, Arne; Schneider, Sebastian; Rottengruber, Hermann
In: Advances in noise and vibration control technology: INTER-NOISE 2020 E-Congress : the 49th International Congress and Exposition on Noise Control Engineering : August 23-26, 2020 / hosted by The Korean Association for Noise and Vibration Engineering ; on behalf of the I-INCE International Institute of Noise Control Engineering/ INTER-NOISE e-Congress - Red Hook, NY: Curran Associates, Inc., 2021, 2020, Abstract 422, 1 Seite
Book chapter
Strukturberuhigung eines spiralförmigen Akustischen Schwarzen Lochs (ASL)
Schrader, Peter; Heinrichs, Christian; Duvigneau, Fabian; Rottengruber, Hermann
In: Fortschritte der Akustik - DAGA 2020 - Berlin : Deutsche Gesellschaft für Akustik e.V. (DEGA), S. 427-430 [Konferenz: DAGA 2020, Hannover, 16.-19. März 2020]
Efficient motion control of a PMSM and design of a mechanic energy storage for a four stroke free piston engine
Gerlach, Andreas; Benecke, Sebastian; Rottengruber, Hermann; Leidhold, Roberto
In: 2020 IEEE Transportation Electrification Conference and Expo: Chicago, IL, USA, 23-26 June 2020 - [Piscataway, NJ]: IEEE - Chicago, IL, USA, 23-26 June 2020 . - 2020, S. 235-239
Benchmark-Analyse verschiedener Tonhaltigkeitsmodelle anhand von Luftschallmessungen an aktuellen Fahrzeug-Elektromotoren
Schneider, Sebastian; Doleschal, Florian; Hots, Jan; Oetjen, Arne; Rottengruber, Hermann; Verhey, Jesko L.
In: Konferenz: DAGA 2020, Hannover, 16.-19. März 2020, Fortschritte der Akustik - DAGA 2020: 46. Jahrestagung für Akustik, 16.-19. März 2019 in Hannover - Berlin: Deutsche Gesellschaft für Akustik e.V. (DEGA) . - 2020, S. 330-332
Experimental investigations and thermodynamic analysis of water injection on a turbocharged 4-Cylinder gasoline direct injection engine
Helmich, Matthias; Lejsek, David; Hettinger, Alexander; Schünemann, Erik; Rottengruber, Hermann
In: International AVL Symposium on Propulsion Diagnostics: Baden-Baden, Deutschland, 23. - 24. 06.2020 - [Mainz-Kastel]: [AVL Deutschland GmbH], 2020 . - 2020, insges. 13 S.[Symposium: 14. Internationales AVL Powertrain Diagnostik Symposium, Baden-Baden, 23. - 24.06.2020]
Einflussfaktoren auf Bauteilverschleiß im Kraftstoffversorgungssystem (Literaturrecherche)
Rottengruber, Hermann; Sazonov, Vladyslav; Ecke, Martin
In: Einflussfaktoren auf Bauteilverschleiß im Kraftstoffversorgungssystem (Literaturrecherche) / Rottengruber , Hermann - Hamburg : DGMK . - 2020, insges. 74 S. - (DGMK-research report; 835)
Simulative study of gasoline-water emulsiondirect injection to increase the efficiency of gasoline engines
Sazonov, Vladyslav; Kniep, Daniel; Niemann, Dennis; Rottengruber, Hermann
In: Spannungsfeld Fahrzeugantriebe: Gedenkschrift für Prof. Dr.-Ing. Roland Baar - Berlin: Technische Universität Berlin, 2020; Salomon, Alexander . - 2020, S. 370-391
Peer-reviewed journal article
Nonlinear power control of an internal combustion engine without throttle actuator
Gerlach, Andreas; Haeseler, Friedrich; Rottengruber, Hermann; Leidhold, Roberto
In: IEEE transactions on control systems technology: a publication of the IEEE Control Systems Society/ Institute of Electrical and Electronics Engineers - New York, NY: IEEE - a publication of the IEEE Control Systems Society . - 2020, insges. 8 S.
Dissertation
Auswirkungen von Formabweichungen im Brennraum auf das Betriebsverhalten von Ottomotoren
Zeilinga, Stephan; Rottengruber, Hermann; Bähr, Rüdiger
In: Magdeburg, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2020, X, 149 Seiten [Literaturverzeichnis: Seite 138-144][Literaturverzeichnis: Seite 138-144]
Betriebspunktorientierte Analyse und Optimierung der Partikelrohemissionen an einem turboaufgeladenen Ottomotor
Fischer, Philipp; Rottengruber, Hermann
In: Magdeburg, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2020, xiii, 175 Seiten [Literaturverzeichnis: Seite 155-169][Literaturverzeichnis: Seite 155-169]
Article in conference proceedings
Präzieses Temperaturmnagement
Wagner, Thilo; Rottengruber, Hermann; Mandl, Florian; Bargende, Michael
In: Abschluss- und Zwischenberichte der Forschungsstellen Motoren: Frühjahrstagung 2020 : Tagungsband : 2020 - Würzburg - Frankfurt am Main: [Forschungsvereinigung Verbrennungskraftmaschinen e.V.], 2020, 2020, Artikel-Nr. 1266, Seiten 49-87 - (Forschungsvereinigung Verbrennungskraftmaschinen; R593)[FVV-Imformationstagung Motoren, Würzburg, Frühjahr 2020]
Scientific monograph
Einflussfaktoren auf Bauteilverschleiß im Kraftstoffversorgungssystem (Literaturrecherche)
Rottengruber, Hermann; Sazonov, Vladyslav; Ecke, Martin
In: Hamburg: DGMK, 2020, 74 Seiten - (DGMK-research report; 835)
Wissenschaftliche Analyse zum Einsatz temperaturabhängiger Emissionsregelungen von Dieselmotoren - Technische Studie zum Stand des Wissens, Weiterentwicklung des Standes der Technik und zur Bewertung der generellen Notwendigkeit temperaturabhängiger Emissionsregelungsansätze mit besonderem Schwerpunkt auf Abgasrückführsysteme
Koch, Thomas; Beidl, Christian; Rottengruber, Hermann
In: Berlin: Springer Vieweg, 2020, 1 Online-Ressource (VI, 65 Seiten) - (Springer eBook Collection), ISBN: 978-3-662-61877-6
2019
Book chapter
Akustische Analyse und Optimierung von mechatronischen Kraftstoffeinspritzsystemen
Mühlbauer, Christian; Rabl, Hans-Peter; Rottengruber, Hermann
In: Fortschritte der Akustik - DAGA 2019 - Berlin: Deutsche Gesellschaft für Akustik e.V. (DEGA), S. 647-650[Konferenz: 45. Deutsche Jahrestagung für Akustik - DAGA 2019, Rostock, 18.-21. März 2019]
Verlustanalyse eines direkteinblasenden Wasserstoffverbrennungsmotors
Klepatz, Kevin; Zeilinga, Stephan; Rottengruber, Hermann; Koch, Daniel; Prümm, Franz Werner; Sousa, Alvaro
In: 11. Tagung Einspritzung und Kraftstoffe 2018 : Diesel Benzin Gas Alternative Kraftstoffe Medien für SCR Wasser - Wiesbaden : Springer Fachmedien Wiesbaden , 2019, S. 395-422 [Tagung: 11. Tagung Einspritzung und Kraftstoffe 2018]
Fundamental investgations and experimental analysis of different water injection concepts of a single cylinder gasoline direct injection engine
Helmich, Mathias; Hettinger, Alexander; Schünemann, Erik; Rottengruber, Hermann
In: Graz: Verlag d. Technischen Universität Graz, S. 35-48, 2019 - (VKM-THD Mitteilungen; 103)
Entwicklung einer empirischen Formel zur Bewertung/Benotung der Tickergeräuschanteile von Motorgeräuschen
Schneider, Sebastian; Hots, Jan; Luft, Tommy; Rottengruber, Hermann; Verhey, Jesko L.; Rabl, Hans-Peter
In: Konferenz: 45. Deutsche Jahrestagung für Akustik - DAGA 2019, Rostock, 18.-21. März 2019, Tagungsband - DAGA 2019 - Berlin: Deutsche Gesellschaft für Akustik e.V. (DEGA) . - 2019, S. 643-646
The noise reduction potential of lightweight acoustic metamaterials a numerical and experimental study
Schrader, Peter; Duvigneau, Fabian; Rottengruber, Hermann; Gabbert, Ulrich
In: Automotive Acoustics Conference 2017 , 2017 - Wiesbaden : Springer Vieweg ; Siebenpfeiffer, Wolfgang . - 2019, S. 249-272 [Konferenz: 4. Internationale ATZ-Fachtagung Fahrzeugakustik, Zürich, 11. - 12. Juli 2017]
Untersuchung der Benzin-Wasser-Emulsion Direkteinspritzung zur Effizienzsteigerung von Ottomotoren
Vladyslav, Sazonov; Rottengruber, Hermann
In: 11. Tagung Einspritzung und Kraftstoffe 2018 : Diesel Benzin Gas Alternative Kraftstoffe Medien für SCR Wasser - Wiesbaden : Springer Fachmedien Wiesbaden , 2019, S. 515-542 [Tagung: 11. Tagung Einspritzung und Kraftstoffe 2018]
Bestimmung der optimalen Batteriekapazität eines Brennstoffzellen-Fahrzeuges
Konradt, Swantje; Rottengruber, Hermann
In: 14. Magdeburger Maschinenbau-Tage 2019 - Magdeburger Ingenieurtage - 24. und 25. September 2019 : Tagungsband - Magdeburg: Otto von Guericke Universität Magdeburg, Fakultät Maschinenbau, Institut für Mobile Systeme - Lehrstuhl Mechatronik, S. 64-74[Tagung: 14 MMT 2019, 24. und 25. September 2019, Magdeburg]
Peer-reviewed journal article
A new approach to model the fan in vehicle thermal management simulations
Saad, Ahmed; Full, Markus; Rottengruber, Hermann
In: SAE technical papers - Warrendale, Pa.: Soc., S. 1-10, 2019[Online first]
Variable valve timing with only one camshaft actuator for a single-cylinder engine
Gerlach, Andreas; Fritsch, Martin; Benecke, Sebastian; Rottengruber, Hermann; Leidhold, Roberto
In: IEEE ASME transactions on mechatronics: a joint publication of the IEEE Industrial Electronics Society, the IEEE Robotics and Automation Society and the ASME Dynamic Systems and Control Division/ Institute of Electrical and Electronics Engineers - New York, NY: IEEE - a joint publication of the IEEE Industrial Electronics Society, the IEEE Robotics and Automation Society and the ASME Dynamic Systems and Control Division, Bd. 24 (2019), 4, S. 1839-1850
Prediction of the airborne sound transmission through the front end of a vehicle
Gavila Lloret, Maria; Duvigneau, Fabian; Gabbert, Ulrich; Rottengruber, Hermann
In: Automotive and engine technology - [Cham, Switzerland] : Springer International Publishing, Bd. 4 (2019), S. 169-178
Open-source dynamic Matlab/Simulink 1D proton exchange membrane fuel cell model
Lazar, Arne; Konradt, Swantje C.; Rottengruber, Hermann
In: Energies - Basel: MDPI, Volume 12, issue 18 (2019), article 3478, insgesamt 12 Seiten
Dissertation
Modellierung und Vorhersage des präzisen thermischen Verhaltens von Verbrennungsmotoren in 3D- und 1D-Simulationen
Wagner, Thilo André; Rottengruber, Hermann
In: Magdeburg, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2019, VIII, 132 Seiten [Literaturverzeichnis: Seite 120-124][Literaturverzeichnis: Seite 120-124]
2018
Book chapter
Control of a directly driven four-stroke free piston engine
Gerlach, Andreas; Rottengruber, Hermann; Leidhold, Roberto
In: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society: Omni Shoreham Hotel, Washington DC, United States of America, 20-23 October, 2018 : proceedings/ IEEE Industrial Electronics Society - Piscataway, NJ: IEEE - Omni Shoreham Hotel, Washington DC, United States of America, 20-23 October, 2018 : proceedings . - 2018, S. 4525-4530
Finite elemente analysis of the acoustic behavior for porelastic materials based on experimetally determined frequency-dependent material properties
Schrader, Peter; Duvigneau, Fabian; Gavila Lloret, Maria; Rottengruber, Hermann; Gabbert, Ulrich
In: Proceedings of ISMA2018, International Conference on Noise and Vibration Engineering/USD2018, International Conference on Uncertainty in Structural Dynamics , 2018 - Heverlee (Belgium) : KU Leuven, Department of Mechanical Engineering ; Desmet, W., S. 661-675 [Konferenz: ISMA Conference on Noise and Vibration Engineering 2018, ISMA2018, Leuven, September 17-19, 2018]
Granulatstrukturen als breitbandig wirkende, leichte Absorbermaterialien für motornahe Anwendungen
Schrader, Peter; Rottengruber, Hermann
In: Motor- und Aggregate-Akustik: 10. Magdeburger Symposium : Tagungsband [13. und 14. Juni 2018], S. 119-162[Symposium: 10. Magdeburger Symposium Motor- und Aggregate-Akustik, Magdeburg, 13. - 14. Juni 2018]
Numerische und experimentelle Untersuchung der Schalldämmung thermischer Abschirmbleche
Welder, Aylin; Schrader, Peter; Ranganathan, Thrivikraman; Hubert, Andreas; Rottengruber, Hermann
In: Motor- und Aggregate-Akustik: 10. Magdeburger Symposium : Tagungsband [13. und 14. Juni 2018], S. 163-184[Symposium: 10. Magdeburger Symposium Motor- und Aggregate-Akustik, Magdeburg, 13. - 14. Juni 2018]
Potential of series-compatible in-cylinder pressure sensor for gasoline engines using the example of ignition angle control
Booven, Benedikt; Schüle, Harry; Walder, Torben; Rottengruber, Hermann
In: Knocking in Gasoline Engines - Cham: Springer, 2018 . - 2018, S. 279-298[Konferenz: 5th International Conference Knocking in Gasoline Engines, Berlin, Germany, December 12-13, 2017]
Peer-reviewed journal article
Computer-aided Prediction of Airborne Sound Transmission through Front Car End
Gavila Lloret, Maria; Duvigneau, Fabian; Müller, Gregor; Rottengruber, Hermann
In: ATZ worldwide - Wiesbaden : Springer Automotive Media, Bd. 120 (2018), Heft 7/8, S. 76-79
Loss analysis of a direct-injection hydrogen combustion engine
Klepatz, Kevin; Rottengruber, Hermann; Zeilinga, Stephan; Koch, Daniel; Prümm, Werner
In: SAE technical papers/ Society of Automotive Engineers - Warrendale, Pa.: Soc., 1906, 2018, Technical Paper 2018-01-1686, insgesamt 12 S.[International Powertrains, Fuels & Lubricants Meeting, Heidelberg, 17-19 September 2018]
Real-time assessment of in-cylinder pressure for fresh air mass estimation using the example of modern spark-ignited combustion engines
Booven, Benedikt; Schüle, Harry; Walder, Thorben; Kulzer, André Casal; Rottengruber, Hermann; Bargende, Michael
In: International journal of engine research - London: Sage Publ, Bd. 19.2018, 2, S. 250-256
A physical-based approach for modeling the influence of different operating parameters on the dependency of external EGR rate and indicated efficiency
Langmandel, Daniel; Orlick, Hannes; Haas, Daniel; Rottengruber, Hermann; Riegger, Franziska
In: SAE technical papers - Warrendale, Pa: Soc, 2018, Technical Paper 2018-01-1736, insgesamt 14 S.[International Powertrains, Fuels & Lubricants Meeting, Heidelberg, 17-19 September 2018]
Computergestützte Voraussage der Luftschallemission durch den Vorderwagen
Gavila Lloret, Maria; Duvigneau, Fabian; Müller, Gregor; Rottengruber, Hermann
In: Automobiltechnische Zeitschrift - Wiesbaden : Vieweg, Bd. 120 (2018), Heft 7/8, S. 76-79
Different hardware approaches implementing low-pressure exhaust gas recirculation during the dynamic operation of turbocharged gasoline engines
Langmandel, Daniel; Rottengruber, Hermann; Haas, Daniel; Orlick, Hannes; Brehm, Norbert
In: Automotive and engine technology: the international journal of WKM - [Cham, Switzerland]: Springer International Publishing, 2018[Online first]
Dissertation
Entwicklung eines integrierten Kraftstoffverbrauchs- und Fahrtenkettenmodells des Straßengüterverkehrs am Beispiel schwerer Nutzfahrzeuge - zur Analyse und Bewertung von zeitlich wirksamen Maßnahmen zur Senkung der Treibhausgasemissionen wie reduzierten Höchstgeschwindigkeiten
Kaiser, Alexander; Zadek, Hartmut; Rottengruber, Hermann
In: Magdeburg: Zadek Management & Strategy GmbH, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2018, XXVIII, 367 Seiten - (Zadek-Publikationen zur Logistik; Band 4), ISBN: 978-3-9818126-4-0
Vorausschauende Betriebsstrategie eines seriellen Hybridfahrzeuges durch dynamische Optimierung und Backend-Anbindung
Sauer, Andreas; Rottengruber, Hermann
In: München: Verlag Dr. Hut, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2018, V, 111 Seiten - (Ingenieurwissenschaften), ISBN: 978-3-8439-3623-1 [Literaturverzeichnis: Seite 107-111][Literaturverzeichnis: Seite 107-111]
Editor
Injektor und Verfahren zur Einspritzung von Kraftstoff und einer Zusatzflüssigkeit sowie Verwendung des Injektors
Rottengruber, Hermann; Wagner, Thilo; Oder, Johannes
In: Patent DE102018007614
Zylinderanordnung und Verfahren zum Kühlen der Zylinderanordnung
Rottengruber, Hermann; Oder, Johannes; Wagner, Thilo
In: Patent DE102018009442
Motor- und Aggregate-Akustik - 10. Magdeburger Symposium : Tagungsband [13. und 14. Juni 2018]
Rottengruber, Hermann; Henze, Wilfried; Luft, Tommy
In: 2018, 1 Online-Ressource (PDF-Datei, 332 Seiten, 95,1 MB)Kongress: Magdeburger Symposium 10 (Magdeburg : 2018.06.13-14)
Article in conference proceedings
Diesel engine control based on structure-borne noise (FVV No. 1075)
Schneider, Sebastian; Rottengruber, Hermann; Carstens, Jan Hendrik Hermann; Gühmann, Clemens; Nobis, Jürgen; Neumann, Enrico; Joerres, Michael
In: Magdeburg, 2018, 1 Online-Ressource (PDF-Datei, 26 Seiten)
Laser-optical investigations of injector tip wetting effects for Otto-DI-Injectors and varying thermodynamic boundary conditions
Fischer, Philipp; Durst, Bodo; Hartl, Florian; Kutza, Susanne; Miklautschitsch, Manfred; Unterweger, Georg; Rottengruber, Hermann
In: International AVL Symposium on Propulsion Diagnostics: June 26-27, 2018, Kurhaus Baden-Baden, Germany/ International AVL Symposium on Propulsion Diagnostics - [Mainz-Kastel]: [AVL Deutschland GmbH], 2018; International AVL Symposium on Propulsion Diagnostics (13.:2018) . - 2018, insges. 22 S.[Symposium: 13. International AVL Symposium on Propulsion Diagnostics, Baden-Baden, June 26-27, 2018]
Diesel engine control based on structure-borne noise
Schneider, Sebastian; Rottengruber, Hermann; Carstens, Hendrik; Gühmann, Clemens; Nobis, Jürgen; Neumann, Enrico; Joerres, Michael
In: International AVL Symposium on Propulsion Diagnostics/ International AVL Symposium on Propulsion Diagnostics - [Mainz-Kastel]: [AVL Deutschland GmbH]; International AVL Symposium on Propulsion Diagnostics (13.:2018) . - 2018, insges. 26 S.
Studie zu Aufladekonzepten für Wasserstoffverbrennungsmotoren
Zeilinga, Stephan; Klepatz, Kevin; Rottengruber, Hermann; Koch, Daniel
In: 23. Aufladetechnische Konferenz 2018: 20./21. September in Dresden - Dresden: Technische Universität Dresden, Lehrstuhl Verbrennungsmotoren, 2018 . - 2018, S. 537-557[Konferenz: 23. Aufladetechnische Konferenz, Dresden, 20. - 21. September 2018]
2017
Book chapter
Passive Reduktion der Schallabstrahlung von Oberflächen durch Anwendung von Metamaterialstrukturen
Schrader, Peter; Duvigneau, Fabian; Rottengruber, Hermann; Gabbert, Ulrich
In: Fortschritte der Akustik - DAGA 2017 - Berlin : Deutsche Gesellschaft für Akustik e.V. (DEGA), S. 1254-1257 [Kongress: 43. Jahrestagung für Akustik, DAGA 2017, Kiel, 06.-09. März 2017]
Regelungsstruktur und Realisierbarkeitsanalyse für den Betrieb eines direktangetriebenen Freikolbenmotors
Gerlach, Andreas; Zeilinga, Stephan; Rottengruber, Hermann; Leidhold, Roberto
In: 13. Magdeburger Maschinenbau-Tage 2017 , 2017 - Magdeburg : Universitätsbibliothek ; Kasper, Roland - autonom - vernetzt - nachhaltig, 27. und 28. September 2017 : Tagungsband, S. 409-418 [Konferenz: MMT2017]
Sprayvermessung einer Benzin-Wasser-Emulsion
Rottengruber, Hermann; Wagner, Thilo; Beyrau, Frank; Dragomirov, Plamen; Schaub, Maximilian
In: 10. Tagung Diesel- und Benzindirekteinspritzung 2016 - Inklusive Gaseinblasung - Wiesbaden : Springer Fachmedien Wiesbaden . - 2017, S. 381-402 [Kongress: 10. Tagung Diesel- und Benzindirekteinspritzung 2016, 24. - 25. November, Berlin]
Sustainable mobility with hydogen - the combustion engine goes "green"
Zeilinga, Stephan; Koch, Daniel Thomas; Rottengruber, Hermann; Prümm, Franz Werner; Sousa, Alvaro
In: 12. Tagung Gasfahrzeuge , 2017 - [Stuttgart] : [FKFS, Forschungsinstitut für Kraftfahrzeugwesen und Fahrzeugmotoren Stuttgart] ; Tagung Gasfahrzeuge (12.:2017) - 2017, Art. 3.1, insgesamt 22 S. [Tagung: 12. Tagung Gasfahrzeuge, Stuttgart, 24.-25 Oktober 2017]
Kombinierter Einsatz optischer Messtechniken am BMW TwinPower Turbo Motor in der Analyse der Partikelemissionen bedingt durch Injektorkuppenbenetzung
Fischer, P.; Durst, B.; Eigenschenk, R.; Miklautschitsch, M.; Unterweger, G.; Rottengruber, Hermann
In: Motorische Verbrennung , 2017 , Als Manuskript gedruckt - Erlangen : ESYTEC Energie- und Systemtechnik GmbH, S. 465 [Tagung: 13. Tagung Motorische Verbrennung, Ludwigsburg, 16. -17. März 2017]
Konzepte für E-Antriebe und deren Relevanz für die Gießereitechnik
Rottengruber, Hermann; Zeilinga, Stephan; Todsen, Eike Christian
In: Gießtechnik im Motorenbau 2017 / VDI-Fachtagung Gießtechnik im Motorenbau , 2017 , Nichtredigierter Manuskriptdruck - Düsseldorf : VDI Verlag GmbH, S. 3-13 - (VDI-Berichte; 2304) [Kongress: Gießtechnik im Motorenbau 2017, Magdeburg, 01. und 02. Februar 2017; Literaturangaben]
Peer-reviewed journal article
Simulationsgestützte Entwicklung eines Wasserstoffmotors für einen emissionsfreien Verkehr
Koch, Daniel; Zeilinga, Stephan; Rottengruber, Hermann; Sousa, Alvaro
In: Motortechnische Zeitschrift - Wiesbaden : Vieweg, Bd. 78 (2017), Heft 11, S. 38-43
Simulation des Wärmetransports bei Variation der Betriebsbedingungen
Oder, Johannes; Rottengruber, Hermann; Zeitz, Volker
In: Motortechnische Zeitschrift - Wiesbaden : Vieweg, Bd. 78 (2017), Heft 10, S. 74-79
Dissertation
"Experimentelle und simulative Untersuchung von Thermomanagementmaßnahmen in der Motorwarmlaufphase"
Zeitz, Volker; Rottengruber, Hermann
In: Magdeburg, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2017, X, 135 Blätter
Ganzheitliche simulationsbasierte Bewertung der Akustik von automobilen Antrieben
Duvigneau, Fabian; Gabbert, Ulrich; Rottengruber, Hermann
In: Düsseldorf: VDI-Verlag, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Maschinenbau 2017, VIII, 134 Seiten - (Fortschritt-Berichte VDI; Reihe 20, Rechnerunterstützte Verfahren; Nr. 467) [Literaturverzeichnis: Seite 120-133; Mit deutscher und englischer Zusammenfassung][Literaturverzeichnis: Seite 120-133; Mit deutscher und englischer Zusammenfassung]
Article in conference proceedings
Körperschallbasierte Dieselmotorenregelung - Optimierung und Adaption der Parameter
Schneider, Sebastian; Rottengruber, Hermann; Carstens, Jan Hendrik Hermann; Nobis, Jörg; Joerres, Michael; Gühmann, Clemens
In: Abschluss- und Zwischenberichte der Forschungsstellen Motoren / Forschungsvereinigung Verbrennungskraftmaschinen , 2017 - Frankfurt am Main : Forschungsvereinigung Verbrennungskraftmaschinen e.V. ; Forschungsvereinigung Verbrennungskraftmaschinen. Frühjahrstagung (2017), S. 61-95 [Tagung: FVV, Forschungsvereinigung Verbrennungskraftmaschinen, Frühjahrstagung 2017, Bad Neuenahr, 30. - 31.03.2017]
Bewertung von homogenen CNG-DI-Brennverfahren in Kombination mit Hochlast-AGR, Miller-Verfahren und alternativen Zündverfahren
Pischinger, Stefan; Rottengruber, Hermann; Oder, Johannes; Hoppe, Isabelle
In: Herbsttagung 2017 / Forschungsvereinigung Verbrennungskraftmaschinen , 2017 - Frankfurt am Main : Forschungsvereinigung Verbrennungskraftmaschinen e.V., S. 163-196 [Tagung: FVV, Forschungsvereinigung Verbrennungskraftmaschinen, Herbsttagung, Leipzig, 05.-06. 10. 2017]
The noise reduction potential of lightweight acoustic metamaterials - a numerical and experimental study
Schrader, Peter; Duvigneau, Fabian; Rottengruber, Hermann; Gabbert, Ulrich
In: Automotive Acoustics Conference 2017 / Internationale ATZ-Fachtagung Fahrzeugakustik , 2017 - Wiesbaden, Germany : ATZlive ; Internationale ATZ-Fachtagung Fahrzeugakustik (4.:2017)
Diesel engine control based on structure-borne noise - optimization and adaption of parameters
Schneider, Sebastian; Carstens, Jan Hendrik Hermann; Nobis, Jürgen; Rottengruber, Hermann; Gühmann, Clemens; Neumann, Enrico; Joerres, Michael
In: Automotive Acoustics Conference 2017 / Internationale ATZ-Fachtagung Fahrzeugakustik , 2017 - Wiesbaden, Germany : ATZlive ; Internationale ATZ-Fachtagung Fahrzeugakustik (4.:2017)
2016
Book chapter
A numerical and experimental study on the noise absorption behavior of functionally graded materials considering geometrical and material influences
Schrader, Peter; Duvigneau, Fabian; Orszulik, Ryan; Rottengruber, Hermann; Gabbert, Ulrich
In: Proceedings of the Inter-Noise 2016 - Berlin : Deutsche Gesellschaft für Akustik e.V, S. 6451-6462 [Kongress: 45th International Congress and Exposition on Noise Control Engineering, Inter-Noise 2016, Hamburg, Germany, 21. - 24. August, 2016]
Self-sensing control of a single cylinder ICE with directly coupled PMSM
Gerlach, Andreas; Horn, Benjamin; Förster, Niklas; Leidhold, Roberto; Rottengruber, Hermann
In: IECON 2016 - Piscataway, NJ : IEEE - 42th annual conference of the IEEE Industrial Electronics Society ; Florence, Italy, October 24 - 27, 2016, S. 1864-1869 [Kongress: 42th Annual Conference of the IEEE Industrial Electronics Society, Florence, Italy, 24. - 27. October, 2016]
Optische Untersuchungen zur Flammenkernbildung im Ottomotor bei Ladungsverdünnung
Schneider, Andreas; Hettinger, Philippe; Schünemann, Erik; Rottengruber, Hermann
In: Beiträge / Internationales Symposium für Verbrennungsdiagnostik , 2016 - Mainz-Kastel : AVL Deutschland, S. 61-79 [Kongress: 12. Internationales Symposium für Verbrennungsdiagnostik, Baden-Baden, 10. und 11. Mai, 2016]
Vergleich verschiedener Konzepte zur passiven Reduktion der Schallabstrahlung eines Verbrennungsmotors
Duvigneau, Fabian; Schrader, Peter; Schapitz, Hans; Luft, Tommy; Koch, Sebastian; Rottengruber, Hermann; Gabbert, Ulrich
In: Motor- und Aggregate-Akustik - 9. Magdeburger Symposium : Tagungsband / Symposium Motor- und Aggregateakustik , 2016 - Magdeburg : Otto-von-Guericke-Universität Magdeburg, IMS-EMA, S. 238-251 [Kongress: 9. Magdeburger Symposium Motor- und Aggregate-Akustik, Magdeburg, 06.-07.07.2016]
Numerische und experimentielle Parameterstudien zum akustischen Verhalten monosubstrater Twinlayer für automotive Anwendungen
Schrader, Peter; Duvigneau, Fabian; Schwammberger, Torsten; Feist, Michael; Rottengruber, Hermann; Gabbert, Ulrich
In: Motor- und Aggregate-Akustik - 9. Magdeburger Symposium : Tagungsband / Symposium Motor- und Aggregateakustik , 2016 - Magdeburg : Otto-von-Guericke-Universität Magdeburg, IMS-EMA ; Rottengruber, Hermann, S. 252 [Kongress: 9. Magdeburger Symposium Motor- und Aggregate-Akustik, Magdeburg, 06.-07.07.2016]
Experimental studies on spark stability in an optical combustion vessel under flowing conditions
Schneider, Andreas; Leick, Philippe; Hettinger, Alexander; Rottengruber, Hermann
In: Internationaler Motorenkongress 2016 - Wiesbaden : Springer Vieweg, S. 327-348 [Kongress: 3. Internationaler Motorenkongress, Baden-Baden, 23.-24.02.2016]
Efficient Control of Internal Combustion Engines for Electric Power Generation Without Throttle Actuator
Gerlach, Andreas; Horn, Benjamin; Förster, Niklas; Rottengruber, Hermann; Leidhold, Roberto
In: IECON 2016 - Piscataway, NJ : IEEE - 42th annual conference of the IEEE Industrial Electronics Society ; Florence, Italy, October 24 - 27, 2016, S. 1802-1807 [Kongress: 42th Annual Conference of the IEEE Industrial Electronics Society, Florence, Italy, 24. - 27. October, 2016]
Peer-reviewed journal article
Vorausschauende Betriebsstrategie von Hybridfahrzeugen mit Backend-Anbindung
Sauer, Andreas; Perschl, Franz; Rottengruber, Hermann
In: Automatisierungstechnik - Berlin : De Gruyter, Bd. 64 (2016), Heft 5, S. 385-395
Derivation and validation of a heat transfer model in a hydrogen combustion engine
Michl, Johannes; Neumann, Jens; Rottengruber, Hermann; Wensing, Michael
In: Applied thermal engineering - Amsterdam [u.a.] : Elsevier Science, Bd. 98 (2016), S. 502-512
Thermo-acoustic performance of full engine encapsulations - a numerical, experimental and psychoacoustic study
Duvigneau, Fabian; Luft, Tommy; Hots, Jan; Verhey, Jesko L.; Rottengruber, Hermann; Gabbert, Ulrich
In: Applied acoustics - Amsterdam [u.a.] : Elsevier, Bd. 102 (2016), S. 79-87
Dissertation
Analyse von Gemischbildung und Verbrennung alternativer Dieselkraftstoffe mit optischen Verfahren
Dragomirov, Plamen; Schmidt, Jürgen; Rottengruber, Hermann
In: Barleben: docupoint Verlag, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Verfahrens- und Systemtechnik 2016, xxii, 175 Seiten - (Micro-macro transactions; Volume 22; Docupoint Wissenschaft), ISBN: 978-3-86912-121-5 [Literaturverzeichnis: Seite 160-175][Literaturverzeichnis: Seite 160-175]
Untersuchung der Wandfilmbildung bei der Benzindirekteinspritzung unter Nutzung optischer Messverfahren
Schulz, Florian; Schmidt, Jürgen; Rottengruber, Hermann
In: Barleben: docupoint Verlag, Dissertation Otto-von-Guericke-Universität Magdeburg, Fakultät für Verfahrens- und Systemtechnik 2016, X, 175 Seiten - (Micro-macro transactions; Volume 25; Docupoint Wissenschaft), ISBN: 978-3-86912-125-3 [Literaturverzeichnis: Seite [167]-175][Literaturverzeichnis: Seite [167]-175]
Editor
Motor- und Aggregate-Akustik - 9. Magdeburger Symposium : Tagungsband
Rottengruber, Hermann; Henze, Wilfried; Luft, Tommy
In: Magdeburg: Otto-von-Guericke-Universität Magdeburg: IMS-EMA, 2016, 272 Seiten, ISBN: 978-3-944722-42-9 Kongress: Symposium Motor- und Aggregate-Akustik 9 Magdeburg 2016.07.06-07[Datum und Ort des Symposiums: 06. und 07. Juli 2016 in Magdeburg; Literaturangaben]
2015
Book chapter
Simulation of heat transfer with variation on the operating conditions
Zeitz, Volker; Varga, Patrick; Schmidt, Jürgen; Rottengruber, Hermann
In: Proceedings of the 2nd Conference on Engine Processes - Berlin . - 2015, S. 339-355
Trends in der Motorentechnik mit gießtechnischer Relevanz
Rottengruber, Hermann; Todsen, Eike
In: Gießtechnik im Motorenbau 2015 , Nichtred. Ms.-druck - Düsseldorf : VDI-Verl., S. 3-16 [Literaturangaben]
Learned optimal control of a range extender in a series hybrid vehicle
Styler, Alexander; Sauer, Andreas; Noubakhsh, Illah; Rottengruber, Hermann
In: 2015 IEEE 18th International Conference on Intelligent Transportation Systems (ITSC) - Piscataway, NJ : IEEE, S. 2612-2618
Hochdynamische Regelung eines Verbrennungsmotors zur Untersuchung der Änderung des Kolbenhub- und Drehzahlverlaufs
Gerlach, Andreas; Rottengruber, Hermann; Leidhold, Roberto
In: Smart, effizient, mobil - 12. Magdeburger Maschinenbau-Tage ; 30. September und 1. Oktober 2015 , 2015 - Magdeburg : Otto-von-Guericke-Universität Magdeburg ; Gabbert, Ulrich *1947-* - 12. Magdeburger Maschinenbau-Tage ; 30. September und 1. Oktober 2015 - 2015, Beitrag C7-2, insgesamt 10 S. Kongress: Magdeburger Maschinenbau-Tage 12 Magdeburg 2015.09.30-10.01
Investigation of the combustion of alternative diesel fuels in an optical engine
Dragomirov, Plamen; Sauerhering, Jörg; Beyrau, Frank; Schmidt, Jürgen; Rottengruber, Hermann
In: Internationaler Motorenkongress 2015 / Liebl , Johannes - Wiesbaden : Springer Vieweg, S. 465-466 [Kapitel: Verbrennung Dieselmotor]
Untersuchung der schalldämmenden Wirkung von leichten Aluminium- und Kunststoffschäumen an einer funktionsintegrierten Ölwanne
Schrader, Peter; Luft, Tommy; Rottengruber, Hermann
In: Fortschritte der Akustik - Berlin : Dt. Ges. für Akustik . - 2015, S. 97-100
Strömungsinduzierter Lärm von Ansaug- und Abgassystemen von Verbrennungsmotoren
Duvigneau, Fabian; Schrader, Peter; Rottengruber, Hermann; Gabbert, Ulrich
In: Smart, effizient, mobil - 12. Magdeburger Maschinenbau-Tage ; 30. September und 1. Oktober 2015 , 2015 - Magdeburg : Otto-von-Guericke-Universität Magdeburg - 2015, Beitrag A4-1, insgesamt 10 S. Kongress: Magdeburger Maschinenbau-Tage 12 Magdeburg 2015.09.30-10.01
Peer-reviewed journal article
Experimental investigation of the primary spray development of GDI injectors for different nozzle geometries
Wetzel, J.; Henn, M.; Gotthardt, M.; Rottengruber, Hermann
In: SAE technical papers / Society of Automotive Engineers - Warrendale, Pa. : Soc. - 2015, Paper 2015-01-0911
Fuel-independent particulate emissions in an SIDI engine
Maier, Axel; Klaus, Ulrike; Dreizler, Andreas; Rottengruber, Hermann
In: SAE International journal of engines - Warrendale, Pa. : Society of Automotive Engineers, Bd. 8 (2015), Heft 3, S. 1334-1341
Gießtechnisch relevante Trends in der Motorentechnik
Rottengruber, Hermann; Todsen, Eike Christian
In: Giesserei - Düsseldorf : DVS Media GmbH, Bd. 102 (2015), Heft 8, S. 32-39
Article in conference proceedings
Comparison of diesel fuel and hydrogenated vegetable oil combustion in an optical engine by means of simultaneous two-colour imaging and OH* chemiluminescence
Dragomirov, Plamen; Sauerhering, Joerg; Hadler, Jens; Rottengruber, Hermann; Schmidt, Juergen; Beyrau, Frank
In: 2015
Development, simulation and experimental investigation of a function-integrated and foam damped oil pan for a two cylinder diesel engine
Schrader, Peter; Luft, Tommy; Rottengruber, Hermann; Duvigneau, Fabian; Gabbert, Ulrich
In: Proceedings of Inter-Noise 2015 - 2015, Art. in15 934, insgesamt 12 S.
2014
Book chapter
Entwicklung, Simulation und psychoakustische Bewertung einer motornahen thermoakustischen Vollkapselung
Duvigneau, Fabian; Luft, Tommy; Hots, Jan; Verhey, Jesko L.; Rottengruber, Hermann; Gabbert, Ulrich
In: Motor- und Aggregate-Akustik: 8. Magdeburger Symposium ; Tagungsband ; [02. und 03. Juli 2014 in Magdeburg] - Magdeburg: Otto-von-Guericke-Univ., S. 279-299Kongress: Magdeburger Akustik-Symposium 8 (Magdeburg : 2014.07.02-03)
Wechselwirkung Rohemissionen und Verbrauch - Folgen für die Abgasnachbehandlung
Rottengruber, Hermann; Todsen, Eike Christian
In: Internationaler Motorenkongress 2014 / Liebl , Johannes - Wiesbaden : Springer Vieweg, S. 553-570
Bewertung des Abstrahlverhaltens von Zylinderkurbelgehäusen mittels experimenteller Strukturanalyseverfahren
Lucas, Sebastian; Luft, Tommy; Hoffmann, Matthias; Rottengruber, Hermann; Oppermann, Norbert
In: Motor- und Aggregate-Akustik. - Magdeburg : Otto-von-Guericke-Univ., S. 107-116, 2014Kongress: Magdeburger Akustik-Symposium; 8 (Magdeburg) : 2014.07.02-03
Comparative analysis if the DI diesel engine in-cylinder fluid flow applying PIV-measurement and CFD-simulations
Rottengruber, Hermann; Dragomirov, Plamen; Buchtatyj, Denis; Sauerhering, Jörg; Hadler, Jens; Schmidt, Jürgen
In: HEFAT2014: Orlando, Florida (USA), 14-16 July 2014 : 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics/ International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics - [Leonia, NJ]: EDAS, 2014 . - 2014, S. 1993-2002Kongress: HEFAT 10 (Orlando, Florida : 2014.07.14-16)[Beitrag auf USB-Stick]
Entwicklung einer funktionsintegrierten wärme- und schallgedämmten Ölwanne
Schrader, Peter; Duvigneau, Fabian; Luft, Tommy; Gabbert, Ulrich; Rottengruber, Hermann
In: "Fortschritte der Akustik" - Oldenburg: Deutsche Gesellschaft für Audiologie, 2014 . - 2014, S. 305-306Kongress: Deutsche Jahrestagung für Akustik (DAGA) 40 (Oldenburg : 2014.03.10-13)
Psychoakustische Bewertung einer thermoakustischen Motorkapsel
Verhey, Jesko L.; Luft, Tommy; Hots, Jan; Rottengruber, Hermann
In: "Fortschritte der Akustik": DAGA 2014, 40. Jahrestagung für Akustik, 10.-13. März 2014 Oldenburg - Oldenburg: Deutsche Gesellschaft für Audiologie, S. 44-45
Dissertation
Thermisches Modell eines Verbrennungsmotors zur Untersuchung des Warmlaufverhaltens
Varga, Patrick; Schmidt, Jürgen; Tschöke, Helmut; Rottengruber, Hermann
In: Magdeburg, Univ., Fak. für Verfahrens- und Systemtechnik, Diss., 2014, XIV, 122 Bl.
Editor
Motor- und Aggregate-Akustik - 8. Magdeburger Symposium ; Tagungsband ; [02. und 03. Juli 2014 in Magdeburg]
Rottengruber, Hermann; Henze, Wilfried; Luft, Tommy
In: Magdeburg: Otto-von-Guericke-Univ., 2014, 299 S., Ill., graph. Darst.Kongress: Magdeburger Symposium Motor- und Aggregate-Akustik 8 (Magdeburg : 2014.07.02-03)
Motor car, has combustion engine whose workspace is filled with compressed gas that is restored from compressed gas tank, and auxiliary unit fixed with compressed gas tank and operating bypass flap
Rottengruber, Hermann; Dönitz, Christian; Röth, Jens Adrian
In: Patent DE102012219432
Article in conference proceedings
Analysis of the Atomization Characteristics of 2nd Generation Bio-diesel (2GEN) in Comparison to Diesel-Fuel
Dragomirov, P.; Sauerhering, J.; Schmidt, J.; Rottengruber, H.; Hadler, J.
In: 2014
Requirements of inductive ignition systems under engine and steady-state conditions
Schneider, Andreas; Hettinger, Alexander; Kufferath, Andreas; Rottengruber, Hermann
In: Ignition systems for gasoline engines/ International Conference on Ignition Systems for Gasoline Engines - Meckenheim: DCM Druck Center Meckenheim GmbH, 2014 . - 2014, S. 53-86
Simulation of a thermo-acoustically encapsulated engine
Duvigneau, Fabian; Luft, Tommy; Rottengruber, Hermann; Gabbert, Ulrich
In: 21st International Congress on Sound and Vibration 2014 (ICSV 21)/ International Congress on Sound and Vibration - Red Hook, New York: Curren Associates, Inc., 2014; volume 2 . - 2014Kongress: ICSV 21 (Beijing, China : 2014.07.13-17)
Original article in peer-reviewed international journal
Investigation of the potential of corona ignition to control gasoline homogeneous charge compression
Rottengruber, Hermann
In: Proceedings of the Institute of Mechanical Engineers, Part D: Journal of Automobile Engineering 2012
2013
Book chapter
Potentials and limits of downsizing
Rottengruber, Hermann; Todsen, Eike Christian
In: Knocking in gasoline engines. - Meckenheim : DCM Druck Center, S. 9-22, 2013
Simulation des Wärmetransportes in Verbrennungsmotoren unter Warmlaufbedingungen
Zeitz, Volker; Varga, Patrick; Tschöke, Helmut; Schmidt, Jürgen; Rottengruber, Hermann
In: Effizienz, Präzision, Qualität. - Magdeburg : Univ., insges. 19 S., 2013Kongress: Magdeburger Maschinenbau-Tage; 11 (Magdeburg) : 2013.09.25-26
Peer-reviewed journal article
Ein lohnender Einsatz - Gastkommentar
Rottengruber, Hermann
In: Motortechnische Zeitschrift. - Wiesbaden : Springer Vieweg, Bd. 74.2013, 5, S. 432
Editor
Shaft assembly for turbocharger, has turbocharger shaft rotatably mounted by bearing assembly that is provided with water lubrication, where bearing element of bearing assembly is partially coated with amorphous carbon coating
Schnagl, Johann; Fischer, Hubert; Kunz, Kurt; Rottengruber, Hermann
In: Patent DE102012207660
Article in conference proceedings
Optical Analysis of High-pressure Injections in Transparent Engine
Dragomirov, P.; Sauerhering, J.; Schmidt, J.; Rottengruber, H.; Tschöke, H.; Hadler, J.; Backofen, D.
In: 2013
Original article in peer-reviewed international journal
Dynamic heat exchange model for performance prediction and control system design of automotive waste heat recovery systems
Rottengruber, Hermann
In: Applied Energy Volume 105, May 2013, Pages 293–303
2012
Book chapter
Pulsationsgedämpfte Doppelspray-Injektoren für Otto- und Dieselmotoren
Rottengruber, Hermann
In: Diesel- und Benzindirekteinspritzung VII, Expert Verlag, 2013, Seite 183-193, ISBN 978-3-8169-3180-5
Peer-reviewed journal article
Investigation of the potential of corona ignition to control gasoline homogeneous charge compression
Suess, M.; Guenthner, M.; Schenk, M.; Rottengruber, H.-S.
In: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 226, 2012, Issue 2, S. 275-286, ISSN 09544070, 10.1177/0954407011416905
Editor
Water-lubricated shaft assembly for high pressure radial flow fan, has bearing arrangements for bearing of fan shaft, where bearing elements of one of arrangements, and rings and elements of other arrangement are coated with carbon coating
Rottengruber, Hermann; Schnagl, Johann
In: Patent DE102012207661
2011
Editor
Method for operating combustion engine in motor vehicle, involves switching-off individual or all cylinders of combustion engine, and adjusting lubrication oil inflow to supercharger by magnetic shut-off valve of valve apparatus
Plaum, Heiko; Rottengruber, Hermann; Märkl, Markus; Kunz, Kurt
In: Patent DE102011119521
2008
Peer-reviewed journal article
Tracer-based laser-induced fluorescence measurement technique for quantitative fuel/air-ratio measurements in a hydrogen internal combustion engine
Blotevogel, T.; Hartmann, M.; Rottengruber, H.; Leipertz, A.
In: Applied Optics, Vol. 47, 2008, Issue 35, S. 6488-6496, ISSN 00036935, 10.1364/AO.47.006488
Editor
Electric vehicle, has internal combustion engine with operating point and/or load point controller for controlling operating point and/or load point based on adjustment of combustion-air ratio and/or based on fuel amount supplied to engine
Rottengruber, Hermann
In: Patent DE102008059199
2006
Peer-reviewed journal article
Hydrogen internal combustion engines for vehicle generations of the future
Kiesgen, G.; Berger, E.; Rottengruber, H.
In: AutoTechnology, Vol. 6, 2006, Issue JUNE, S. 40-43, ISSN 16168216
2005
Editor
The hydrogen powertrain system in the new BMW 7 series
Kiesgen, G.; Berger, E.; Rottengruber, H.
In: Advanced Propulsion Systems, Vol. 35, 2005, S. 52-58, ISSN 15439674
2003
Peer-reviewed journal article
The hydrogen SI-engine with high spezific power output - A realistic alternative to the gasoline and diesel engine [Der Wasserstoff-Verbrennungsmotor mit hoher spezifischer Leistung - Eine realistische Alternative zu Benzin- und Dieselmotoren]
Berckmüller, M.; Rottengruber, H.; Eder, A.; Brehm, N.; Elsässer, G.; Müller-Alander, G.; Schwarz, Ch.
In: VDI Berichte, 2003, Issue 1808, S. 59-72+451, ISSN 00835560
2000
Peer-reviewed journal article
Wasserstoff-dieselmotor mit direkteinspritzung, hoher leistungsdichte und geringer abgasemission. Teil 3: Versuche und berechnungen am motor
Rottengruber, H.; Wiebicke, U.; Woschni, G.; Zeilinger, K.
In: MTZ Motortechnische Zeitschrift, Vol. 61, 2000, Issue 2, S. 122-128, ISSN 00248525
Current projects
Competence Center eMobility (KeM) II - Subproject: Digital development methods for the automated synthesis of FCEV and BEV
Duration: 01.01.2024 bis 31.12.2027
The sub-project comprises the development and testing of a simulation-based method for the synthesis of Fuel Cell Hybrid Electric Vehicles (FCEVs) and Battery Electric Vehicles (BEVs). The aim is to realize an optimal design of the drive components, in particular the energy storage systems, taking into account their dynamic interactions in the overall system operation. The development tool created in the research project is based on the use of component-based and freely parameterizable simulation models that can be easily adapted to other vehicle types or applications. This results in a service or transfer service for the CMD, which can be used to support component developers (e.g. from the supplier industry) in the evaluation of their product at overall system level.
The project objective is the development of a real-time simulation model for FCEVs and BEVs with a focus on energy management and drive system design. The applicability of methods for the automated design of drive systems based on machine learning methods and non-linear optimization will be investigated and validated.
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Competence Center eMobility (KeM) II - Subproject: Testing and vibroacoustic analysis of components of an FCEV on the test bench
Duration: 01.01.2024 bis 31.12.2027
The sub-project consists of testing various components of a fuel cell-electric powertrain on the test bench. The focus is on the influencing factors of the PEM fuel cell, which include humidification, degradation and stoichiometry. Based on measurement data, the real system behavior can be determined, which is necessary for the validation of the digital twin and verification of the simulation methodology. In addition, an energy analysis and possible vibroacoustic analysis of the critical components (sub-systems: hydrogen, air and water management) will be carried out in order to identify potential in the area of energy management.
The project objective includes the development of automated test sequences and the derivation of test and refinement cycles. On the other hand, a methodology for the system and component testing and design of an FCEV in the early development phase with regard to vibroacoustic, energetic and system behavior will be generated. This is based on the implementation and development of a model-based transfer path analysis of a fuel cell electric vehicle.
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TRAINS implementation project 15.3: Multiple unit demonstrator with H2 combustion and health monitoring - support for engine application and approval
Duration: 01.03.2024 bis 31.12.2025
As part of the TRAINS UV15 project, a concept is being developed for converting a diesel engine multiple unit drive to a hydrogen combustion engine. Various innovative technologies with a focus on mixture formation, ignition and combustion of hydrogen are being investigated. The aim of the project is to realize a complete conversion of the diesel engine to hydrogen in the multiple unit and at the same time ensure safe driving operation. In addition, the aim is to achieve the diesel full load line as far as possible. The sub-project of the Chair of Energy Conversion for Mobile Applications in the TRAINS UV15 project comprises the acoustic measurement and analysis of the engine, the simulative prediction of the engine parameters for the operating map using a simulation model close to the test bench and the simulative investigation in the 3D CFD. This work serves to support and optimize the development, conversion and approval of an engine for hydrogen operation.
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Completed projects
Increasing the power density of a self-ignited hydrogen engine in a closed working gas cycle
Duration: 01.05.2023 bis 30.04.2025
The project aims to increase the power density of a pollution-free closed-cycle engine currently operated by WTZ Roßlau gGmbH. In collaboration with the IMS at Otto von Guericke University Magdeburg, measures such as increasing the fuel content, adjusting the compression ratio and converting to a 2-stroke principle are being implemented. The limiting variable of the current system, the maximum hydrogen mass flow of the injector, is to be optimized by simulative analysis of the injector geometry. The planned changes could lead to increased mechanical and thermal stress as well as an increased risk of combustion anomalies, which will be investigated through simulations and tests on the engine test bench. The findings should be transferable not only for the planned 4-stroke engine, but also for large engines with a 2-stroke principle, whereby the focus is on the description of physical phenomena in order to ensure scalability to engines with larger bores.
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Liquid LPG supply and measurement in the research single cylinder
Duration: 31.05.2024 bis 31.01.2025
Project objective: Investigation of the integration of liquid LPG in a 1-cylinder gasoline engine and comparison with conventional fuel.
The engine test bench must be modified to prepare for LPG operation. After this adaptation of the system, extensive measurements and analyses are carried out with LPG.
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Analysis and reduction of sound radiation from add-on parts of an electric motor (car drive)
Duration: 01.05.2023 bis 30.04.2024
As part of the project, new passive and active noise reduction measures are being developed and verified. Novel material pairings are used for the passive measures and collocal control structures are being tested in the high-voltage range for the active methods. Attempts are being made to implement direct velocity feedback in such a way that the vibration amplitudes can be reduced over a wide frequency range. Adaptive controllers and filters must be developed for this purpose.
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TRAINS implementation project UV14: Efficient gas engine drive systems for multiple units
Duration: 01.03.2021 bis 31.03.2024
Building on the results of UV 1.1 Studies on diesel replacement solutions for existing trains, this project will involve the specific conversion and design of a diesel engine multiple unit drive to a hydrogen-natural gas combustion engine. The first step is to select the charging system for H2-CNG engine operation, adapt it to the application in the multiple unit and design its load control. Subsequently, model adjustments are made to the 1D and CFD model on the basis of measurement data from the real engine unit. These models were developed in the previous project. Furthermore, the resulting exhaust emissions are predictively determined in the model calculation and the exhaust aftertreatment system is designed on this basis. Finally, the timing and ignition settings as well as the injectors, turbocharging and exhaust gas recirculation are adapted to real engine operation. The aim of this project is to complete the conversion of the diesel engine to hydrogen-natural gas operation so that it can be used in the multiple unit in the follow-up project.
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Model structure to support thermal operational safety
Duration: 01.06.2022 bis 31.12.2023
For a more efficient assessment of thermal operational safety (TBS), a physical vehicle model was created that enables statements to be made about the critical components and assemblies for different drive concepts. The focus here is on analyzing the distribution and spread of heat from the critical to adjacent assemblies with the help of defined temperature zones. All three forms of heat transport, heat conduction, heat radiation and heat flow were taken into account in the model to be created. The vehicle model created was empirically improved on the basis of measurement and simulation data provided by the client so that it is suitable for concept evaluation with regard to TBS for different drive systems.
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Sub-project Competence Center eMobility
Duration: 01.06.2022 bis 31.12.2023
Competence in electromobility 2
As part of the publicly funded project "Competence in Electromobility 2" (KeM II), the focus is on the one hand on setting up a test center in the form of the "Center for Method Development" (CMD) in Barleben. On the other hand, energy-efficient processes are to be methodically developed and applied in the construction of a research vehicle.
In this context, the Chair of "Energy Conversion Systems for Mobile Applications" (EMA) at the Institute of Mobile Systems (IMS) is active in the field of fuel cell vehicles. For the CMD test center, the work packages for the design, conception, planning and support of the fuel cell test benches were taken over by the IMS-EMA. Other tasks include training and preparing the commissioning of the test benches. For this purpose, it is necessary to select and procure a test vehicle.
The "KeM II" research project also includes the application of digital development methods for the automatic synthesis of FCEVs and BEVs. The aim is to apply these methods as part of a component and system design and vehicle integration of a PEM fuel cell system in the conversion of a research vehicle. Outlines are currently being drawn up and the project is being prepared. At the same time, the overall vehicle simulation model of a fuel cell vehicle is being adapted to ensure future applicability. In addition, student work in this subject area is being supervised.
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Acoustic measurement of different drive concepts
Duration: 01.01.2022 bis 30.06.2023
Different car drive concepts are acoustically compared with each other. Standardized airborne and structure-borne sound measurements are carried out for this purpose. In addition, microphone arrays and artificial heads are used as special measurement techniques.
The measurements take place in a converted motor acoustics test bench. A battery simulator, an intermediate gearbox for adjusting torque and speed and the corresponding electrical cabling for the high-voltage range were installed. The control and regulation of the test bench were also adapted. Although electric motors are quieter than conventional combustion engines, they do not necessarily sound any more pleasant, especially not in the passenger compartment.
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Literature research on CO2-neutral gasoline fuels
Duration: 01.12.2022 bis 31.03.2023
The project focuses on alternative gasoline fuels, in particular synthetic fuels, through a thorough literature review and the analysis of efficiency chains in their production. The aim is to derive a well-founded recommendation for a synthetic fuel that is optimally suited for a sports car engine.
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Conditioning and micro-weighing of particle filters II
Duration: 01.10.2022 bis 31.12.2022
This project serves the extended analysis and measurement of filter sheets loaded with particles. A gravimetric method is used and scientifically evaluated, including pre- and post-conditioning of the filters in accordance with ISO 8178.
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Development of a methodology for the diagnosis and monitoring of vehicle drive systems using structure-borne sound-based analyses (SARA)
Duration: 01.04.2020 bis 30.09.2022
Increasing electrification in vehicles, software-guided control and regulation as well as the increasing complexity of drive systems place high demands on diagnostics and monitoring during driving. Due to the tightening of exhaust emission standards, modern vehicles with gasoline engines are equipped with a gasoline particulate filter. Legislation and manufacturers require reliable on-board diagnostics to monitor this exhaust-relevant component. However, there is currently no diagnostic and monitoring procedure that meets all requirements. A methodology must therefore be developed that reliably records and evaluates all relevant operating states (soot and ash loading, damage and presence monitoring). This enables integrated service life management (predictive maintenance) and thus an increase in perceived product and service quality. The methodology is first developed on the engine test bench and then validated and optimized for robust application in real driving conditions. The cost- and time-intensive experimental development part is reduced by creating a digital twin.
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Vibration measurements on a large diesel engine
Duration: 01.01.2022 bis 31.03.2022
In addition to vibroacoustic measurements, the measurements involved telemetric torque measurements, which are not standard in the industry. A measuring apparatus developed at the OVGU, consisting of a transmitter and receiver, was used here. The evaluations and analyses involved new methods of signal analysis, which had to be developed for the special application of large diesel engines for railroad operation.
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Simulation on hydrogen engines
Duration: 01.11.2021 bis 31.03.2022
The aim of the project is to test the applicability of combustion models, which are available in the CFD solver AVL-Fire, using hydrogen as a fuel.
In the first part, a preselection of potentially applicable models is made on the basis of knowledge already acquired in the modeling of hydrogen combustion.
The selected models are examined with regard to stability, sensitivity and accuracy in order to develop a "best practice" recommendation for the simulation of hydrogen combustion engines.
The heat release and wall heat losses are also analyzed.
The assessment is based on a comparison with measurement data provided by the client.
The second part analyzes and evaluates the mechanism of nitrogen oxide formation and post-reaction.
For this purpose, the reaction kinetics are evaluated with regard to their influence and the simulatively determined nitrogen oxides emitted are validated.
The validation is also based on measured values provided by the client.
In addition to the direct calculation of nitrogen oxides within the CFD solver, an asynchronous calculation is carried out in post-processing on the basis of the time-dependent temperature distribution.
Both calculation approaches are compared with the measurement data in order to also work out a "best practice" approach.
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Simulation of the Cold Start Behavior of Exhaust Aftertreatment Systems for Natural Gas Engines
Duration: 01.08.2019 bis 28.02.2022
The aim of this project is to develop and validate a 1D catalyst model that is capable of representing the processes in real catalysts for CNG applications. To enable validation, we are conducting cold start tests with a three-way catalytic converter and a methane oxidation catalytic converter. The monovalent CNG engine runs through the first 300s of the WLTP under different initial conditions (-7; 0; 8 and 20 degrees Celsius). After validation of the 1D model, an optimum strategy for heating the catalytic converter is to be determined simulatively for the driving cycle and then checked on the test bench on the real engine.
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Potential Analysis of Hydrogen CI-Engine Within a Closed Working Gas Circuit
Duration: 09.01.2020 bis 31.12.2021
In this project, hydrogen-oxygen combustion in an inert gas atmosphere is being analyzed. Combustion takes place in a cycle combustion engine. An oxygen-inert gas mixture is introduced into the combustion chamber, where it is self-ignited with directly injected hydrogen. The water resulting from this combustion is then separated from the inert gas, which acts as a carrier gas. The inert gas is then enriched again with oxygen and fed back into the combustion chamber. The aim of this project is to analyze the potential of this hydrogen cycle engine in terms of efficiency and performance. This potential analysis is carried out simulatively with 1D and 3D CFD calculation models. Various inert gases and oxygen concentrations are to be analyzed. The integration of other technologies such as turbocharging or a 2-stroke process is also being considered in this project.
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Influencing the wall heat losses of the gasoline engine by means of coating in combination with Miller combustion process
Duration: 01.01.2019 bis 30.09.2021
As part of the project, a highly efficient gasoline engine combustion process is being developed, which is a combination of the Miller combustion process and a customized, insulating combustion chamber coating. In addition to maximizing the efficiency potential of the coating in combination with the Miller combustion process, the focus is also on the thermodynamic cross-influences. The aim is to develop a methodology in the form of linked simulation tools that can take into account the relevant influencing variables for different engine operating points from the outset. Finally, the knowledge gained is to be validated on a single-cylinder research engine and the potential of the new combustion process quantified. As part of this research project, the optimal characteristics of an insulating combustion chamber coating for the gasoline engine combustion process are to be identified for the first time as a compromise between reduced wall heat losses and negative effects such as an increased tendency to knock or pre-ignition, and their feasibility in terms of materials and production technology is to be investigated.
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Energetic optimization of a vehicle fuel cell system with focus on the subsystems for media supply (O2, H2, H2O) and their energy management (short: contribution to the energy management of a vehicle fuel cell system)
Duration: 01.07.2018 bis 30.06.2021
As part of the doctoral project, a contribution is to be made to the future energy management of a fuel cell vehicle by tapping potential in the design of the overall polymer electrolyte membrane fuel cell system. The focus of this study is the simulative mapping of a fuel cell vehicle in the simulation environment Matlab / Simulink.
The simulation model generated contains the various sub-levels of an overall system for use in cars. The sub-levels initially include a model of the cell, which describes the physical and electrochemical interactions. Based on this, the components of the operating media management (H2, O2, H2O) are integrated into the model. Air management is of particular interest, as the air supply unit contains an electrical consumer in the form of an electrically driven compressor. This has an enormous influence on the efficiency and performance of the fuel cell system. Based on this, the entire vehicle is mapped, which includes the components of the drive train. The focus here is on the optimum design of the battery system with regard to the parameters of battery capacity, recuperation capability and the possible use of a supercapacitor.
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TRAINS implementation project 1.1: Studies on diesel replacement solutions for existing trains
Duration: 01.01.2020 bis 30.04.2021
As part of this project, a concept for converting a diesel engine multiple unit drive to a hydrogen-natural gas combustion engine is being developed. For this purpose, possible applications of various innovative technologies with a focus on mixture formation, ignition and combustion of hydrogen-methane mixtures are being investigated. The aim is to develop an innovative combustion process depending on the H2NG mixing ratio in order to reduce specific fuel consumption and pollutant emissions. The combustion process is designed using simulations with 1D and 3D CFD calculation models. Based on this, a test vehicle will be converted to H2NG operation in the follow-up project, which is to be used in future as part of a real laboratory to power a railcar.
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Conditioning and micro-weighing of particle filters
Duration: 01.10.2020 bis 31.03.2021
This project serves to analyze and measure filter sheets that are loaded with particles. A gravimetric method is used for this purpose, including pre- and post-conditioning of the filters in accordance with ISO 8178.
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Specific experimental modal analysis using a laser scanning vibrometer
Duration: 16.11.2020 bis 31.01.2021
Three gearbox housings are to be measured using laser scanning vibrometers for a simulation comparison or for the optimization of future simulation models. The housings weigh over 1000 kg each and must be set up and excited appropriately in order to correctly map the vibration velocities to be measured. The surface should be prepared in such a way that up to 1000 measuring points are possible on each side of the housing.
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Ignition process for gas engines based on a partially fuel-gas-purged pre-chamber spark plug
Duration: 01.09.2018 bis 31.05.2020
In the future, the limit values for NOX emissions from large gas engines are expected to become significantly stricter. Nitrogen oxide emissions can be effectively reduced by leaning the fuel-air mixture and thus lowering the combustion temperatures. However, this procedure requires significantly improved ignition, as this further reduces the flammability of the mixture. Currently available ignition methods will not be able to ensure the flammability of such mixtures without in-depth modifications to the engine design. To make matters worse, over-stoichiometric combustion favors the formation of hydrocarbon emissions (THC emissions). As hydrocarbons are precursors of ground-level ozone and in some cases carcinogenic, they are classified by the WHO as harmful to the environment and human health. It is to be expected that the legislator will also strongly regulate THC emissions in the future. This will once again significantly increase the requirements for safe and complete ignition of the mixture.
The overall aim of the project is to improve mixture formation and combustion by redesigning the ignition system of a gas engine and influencing the combustion processes in the main combustion chamber of the gas engine while at the same time reducing the fuel content in relation to the fuel-air mixing ratio. To this end, a new ignition process is to be developed on the basis of a partially fuel-gas-purged prechamber spark plug.
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Objective evaluation and optimization of the vehicle-acoustic behavior of mechatronic components on the vehicle drive, R&D sub-project: Simulative and experimental investigation of the effects of the NVH-optimized injection system in system operation on the full engine
Duration: 01.10.2017 bis 31.03.2020
As part of the project, an empirical ticker formula for evaluating the injection system is to be transferred from the engine test bench to the component test bench of CHP Messtechnik. This makes it possible to examine the injection system on a component or injector test bench to the extent that the resulting noises, which for the most part only result from the ticking of the injectors, can be analyzed without the influences of the combustion noises on the test engine.
All practical tests on the test vehicle (map measurement, speed and load run-ups, sound source localization) are carried out on the acoustics test bench of the University of Magdeburg at the Chair of Energy Conversion Systems for Mobile Applications using the latest and most accurate measurement technology (high-precision microphones, 3D accelerometers, microphone array, incremental encoders, etc.).
Furthermore, the individual differences between the injection system components under investigation can be measured and analyzed using the Injection Analyzer so that they provide information about the respective noise differences. The acoustic/psychoacoustic measured variables recorded during the tests serve as input variables for the resulting evaluation models, for which listening tests are carried out in a double-walled listening booth. These models are the basis for the engine noise syntheses, in which the injection noise components of the overall engine noise are replaced by those from the component test bench.
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Factors influencing on component wear in the fuel supply system
Duration: 01.09.2019 bis 31.01.2020
The research was limited to diesel injection systems and served in particular to systematize findings on the effect of solid particles in the fuel injection system. The following partial and related topics were investigated in the research: Significance and possibilities of hardening the component surface, abrasive wear compared to erosive wear: Damage patterns, morphology, particle sizes, abrasive sliding wear due to loose grain, erosive wear due to flow, cavitation and its condition, significance of particles for cavitation, influencing variables particles (hardness, size, quantity), influencing variables fuel (viscosity), influence material surface, Filtrate analyses (real particle compositions by material, size), filtration analyses (influence of filter properties on wear), analogy studies for hydroerosive rounding of injection holes, hydroerosive separation during lapping, test systems and test procedures for injection systems. The results were presented in a structured manner in two interim presentations and a final report.
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Photonic process chains
Duration: 01.12.2016 bis 30.11.2019
Process monitoring of the production of aluminum cylinder heads optimally designed for internal combustion engines using in-line computer tomography with the aim of reducing consumption and pollutants.
The development of future vehicles will be significantly influenced by environmental aspects, mainly CO2-reduction, without neglecting the increasing mobility requirements. The aim of the project is to develop an optimum solution for the design of the individual functional areas of a cylinder head in order to exploit the full potential in terms of strength, friction and weight. From the foundry's point of view, this means a sensible limitation of tolerances in production in order to avoid rejects and thus protect the environment and conserve resources.
The Chair of Energy Conversion Systems for Mobile Applications is carrying out motor tests as part of this project. The aim of these investigations is to identify measurable limit ranges that provide the manufacturer with clear target ranges for the characteristics of a casting.
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Accurate Temperature Mangement
Duration: 01.03.2017 bis 30.11.2019
1D and 3D CFD comprehensive development method to optimise the engine water jacket from concept to production ready level.
CNG-DI engine in Lambda = 1 operation with high-load EGR
Duration: 01.10.2015 bis 31.10.2019
In view of the high availability of gas fuels worldwide, they are a sensible addition to the fuel portfolio in the short and medium term. In particular, the use of CNG (compressed natural gas) in modern turbo DI petrol engines is a promising concept and enables significant greenhouse gas emission savings due to the fuel's low C/H ratio. Due to the low knock sensitivity of CNG fuel, a modern turbo DI petrol engine with an increased compression ratio should serve as the basis for exploiting the potential of the fuel.
As a result of the proposed project, a fundamental evaluation of the potential of a homogeneous CNG-DI combustion process in combination with the Miller process, high-load EGR and alternative ignition systems is to be developed. The possibility of reducing the tendency to knock and increasing the compression ratio is to be analyzed using high-load EGR and the Miller combustion process. The use of an alternative ignition system should allow an assessment of the possibilities for increasing EGR rates and extending the ignition limits.
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Heating of Exhaust Gas Aftertreatment I
Duration: 01.01.2019 bis 01.07.2019
In the project, the CarMaker simulation software was used to calculate the speed and torque curve of a 4-cylinder gasoline DI engine from the speed profile of the WLTP cycle and a fast RDE cycle for various gearshift strategies of the transmission. The speed and torque curve of a realistic shift strategy was transferred to the test bench control system. The petrol engine was set up on the test bench together with exhaust gas measurement technology, a test bench control unit, residual bus simulation, exhaust gas aftertreatment system and an electrical heating power supply and measured in two series of measurements with a catalytic converter fitted with cladding and heating system as well as thermocouples in the programmed WLTP test cycles. Variants of catalytic converter operation were: Catalytic converter without cladding, clad with and without electric heating, with and without electric preheating before the start of the cycle, different temperature levels, all in each case with and without engine catalytic converter preheating due to late combustion center of gravity position. All EU6d-relevant exhaust gas components and CO2, fuel consumption, heating energy requirement and the resulting additional consumption, as well as seven temperatures in and on the catalytic converter and three more on the heating wires were evaluated. The reproducibility of the measurements and the operating modes of the catalytic converter with the lowest consumption and emissions were demonstrated and presented and discussed in detail in a presentation.
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Measurement of injection valves for simulation adjustment
Duration: 01.02.2017 bis 31.05.2019
This research project focuses on the investigation of various injection valves that are to be used in hydrogen combustion engines.
Injectors from three different manufacturers were examined with regard to their suitability for hydrogen combustion engines. These injectors are already used in vehicles that run on natural gas.
The injectors to be tested differed in the following relevant points:
- Exit cross-section,
- the maximum permissible temperature recommended by the respective manufacturer
- required boost current needed to open the valve
The measurements were first carried out with a high-density working medium (nitrogen) and then with a low-density working medium (helium). Helium was to serve as a comparable gas for hydrogen in terms of density.
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Subproject Como III: VK1 - Methodological competence combustion engines
Duration: 01.01.2016 bis 31.12.2018
In addition to the basic gasoline application of the ROTAX engine, the following basic topics are dealt with in order to build up and maintain methodological competence in the field of range extenders and combustion engines:
- Development of a range extender-specific engine control
- Adaptation of the electric motor to the inherent rotational irregularity of the combustion engine
- Investigation of an alternative combustion engine (Wankel engine) on the test bench
- Gas/air mixture formation tests for a range extender engine
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Engine test bench measurements for acoustical engine covers
Duration: 06.08.2018 bis 30.11.2018
Different cylinder head and oil pan covers for engine noise reduction were tested on a four-cylinder diesel engine for the industrial partner, a supplier to the automotive industry. The investigation took place on a semi-free-field acoustic engine test bench. To characterize the noise reduction, single microphones were placed on all sides of the engine in the far field, and simple microphone arrays with 4 or 6 microphones in the near field of the oil pan cover and the cylinder head cover in a fixed position. The engine was measured in an uncovered state, with a standard cover from the engine manufacturer and a heavy cover with maximum acoustic effect as references. The sound radiation behaviour in the entire partial load range of the engine map was characterized by recording the radiated noise of the covers at idle speed and in two speed run-ups at medium and high partial load. Each measurement was repeated three times in order to obtain a measure of the measurement deviation. According to this scheme, the engine was then examined with 12 different variants of the oil pan cover and 15 different variants of the cylinder head cover, whereby the oil pan and cylinder head covers were fitted together. The covers differed in the arrangement of individual material layers, their thickness, material, porosity and mass. The evaluation included a comprehensive analysis of the repeatability, the influence of disturbance variables and a comparison of the sound pressure level reduction of the different design variants in different operating conditions.
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Mixture formation investigation on a single-cylinder transpatent engine
Duration: 01.06.2017 bis 30.11.2018
Thanks to its optical combustion chamber accessibility, a transparent engine offers the possibility of a
high-speed camera-based analysis of injection and mixture formation processes. Among other things, the camera analysis can be used to investigate the effects of modified intake and exhaust channel geometries, which significantly change the charge movement and turbulence in the combustion chamber. Another aspect of the investigation was new injection concepts, with the focus on expanding direct high-pressure fuel injection into the combustion chamber to include low-pressure fuel injection and water injection into the intake port.
Prior to the measurement phase, a cylinder head disk was designed and manufactured with the aforementioned modifications. The results of the optical investigations are used for application and component optimization, with the focus on achieving minimum fuel consumption and raw emission values. In addition, 3D CFD simulations were compared and verified with the results of the optical investigations.
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H2 Engine Simulation II
Duration: 01.03.2017 bis 31.10.2018
A 1/0D simulation model of an H2 engine is created on the basis of a commercial vehicle diesel engine. The aim of this project is to provide a basic model of the hydrogen engine for test bench testing and to predict the performance of the engine. The results are used to develop an extended turbocharger design for the current and future engine concept.
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Analysis of two hydrogen-powered drive concepts for driving a railcar
Duration: 28.05.2018 bis 30.09.2018
The focus here is on an H2-electric drive in combination with an internal combustion engine and a fuel cell H2-electric drive. These drive concepts are intended to replace the conventional diesel engine in railcars and thus improve environmental compatibility. The drive concepts were compared and evaluated in terms of their overall efficiency in a well-to-wheel analysis and in terms of feasibility in a cost and feasibility analysis.
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Investigation of gasoline-water emulsion direct injection to increase the efficiency of gasoline engines
Duration: 01.09.2017 bis 31.08.2018
Future emissions standards pose major challenges for engine development.
CO2 fleet emissions, which are directly linked to fuel consumption, must be drastically reduced by 2020. Water injection is an effective technology to reduce fuel consumption and pollutant emissions or to increase performance. Water has a high heat capacity and enthalpy of vaporization compared to gasoline. By vaporizing the water, it is possible to reduce the charge air temperature and the mixture temperature in the combustion chamber. Water can be introduced in various ways via the intake system or directly into the combustion chamber - the resulting effect differs depending on the variant. Direct injection of the petrol-water emulsion is more efficient in terms of fuel and water consumption, but is the more complex variant. This method of water injection is investigated in the study.
A test rig was set up for the tests, which provides for the implementation of water injection in the low-pressure and high-pressure circuits of the fuel system. On this test rig, the emulsion can be observed after it emerges from the high-pressure pump. Furthermore, emulsion production tests are carried out and evaluated with regard to production and stability for use in the combustion engine. The emulsifications were carried out using the test bench and ultrasonic homogenizer with different types of petrol and additives for different water contents.
Furthermore, the influence of the water content on the spray pattern when injecting a gasoline-water emulsion with a water content of 0-100% was investigated. For this purpose, the spray pattern of a gasoline DI injector in a high-pressure injection chamber is recorded and measured using a high-speed camera using the shadow method and statistically analyzed.
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Investigation of gasoline-water emulsion direct injection to increase the efficiency of gasoline engines
Duration: 01.09.2017 bis 31.08.2018
Future emissions standards pose major challenges for engine development.
CO2 fleet emissions, which are directly linked to fuel consumption, must be drastically reduced by 2020. Water injection is an effective technology to reduce fuel consumption and pollutant emissions or to increase performance. Water has a high heat capacity and enthalpy of vaporization compared to gasoline. By vaporizing the water, it is possible to reduce the charge air temperature and the mixture temperature in the combustion chamber. Water can be introduced in various ways via the intake system or directly into the combustion chamber - the resulting effect differs depending on the variant. Direct injection of the petrol-water emulsion is more efficient in terms of fuel and water consumption, but is the more complex variant. This method of water injection is investigated in the study.
A test bench was set up for the tests, which provides for the implementation of water injection in the low-pressure and high-pressure circuits of the fuel system. The emulsion can be observed on this test rig after it emerges from the high-pressure pump . Furthermore, emulsion production tests are carried out and evaluated with regard to production and stability for use in the combustion engine. The emulsifications were carried out using the test bench and ultrasonic homogenizer with different types of petrol and additives for different water contents.
Furthermore, the influence of the water content on the spray pattern when injecting a gasoline-water emulsion with a water content of 0-100% was investigated. For this purpose, the spray pattern of a gasoline DI injector in a high-pressure injection chamber is recorded and measured using a high-speed camera using the shadow method and statistically analyzed.
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Direct water injection for gasoline engines
Duration: 01.07.2017 bis 30.06.2018
The research focuses on the preparation, supply and spray formation of a water-petrol emulsion for the combustion process in a gasoline engine. On the one hand, the influence of emulsifiers on different water concentrations and the feasibility of on-demand mixing via an additional pre-feed pump without the use of emulsifiers are being investigated. Once the emulsion has been successfully produced, it is injected into an optically accessible chamber via a series injector. The injection is recorded by a high-speed camera and the quality of the spray pattern formation is evaluated.
The results of the spray image analysis in conjunction with a 1D simulation form the basis for a 3D CFD simulation for further analytical investigation.
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Fuselage engine acoustics VI
Duration: 01.12.2017 bis 31.05.2018
As part of previous projects (Rumpfmotor Akustik I, II, III, IV and V), initial findings for the further development of a diesel engine were obtained by numerical and experimental means.
In order to significantly reduce the sound pressure level of a diesel engine, the relevant structure-borne sound conduction paths are to be examined and weighted at the beginning. The components located in the guide paths are then determined and optimization potentials are identified. The modifications to be carried out can be divided into primary and secondary measures for noise reduction on the engine. In this follow-up project, a particular focus will be on reducing the structure-borne noise excitation of the cylinder head.
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Granulate structures as broadband, lightweight absorber materials for engine-related applications
Duration: 01.02.2018 bis 01.05.2018
The use of absorber materials for the purpose of noise reduction in the automotive sector is subject to the demand for low mass and volume with simultaneous high noise reduction of structural vibrations, which can already be below 500 Hz on the engine. Dissipation mechanisms must be utilized for this purpose. In this study, various granules and microfibers were embedded in a chamber enclosed by plastic foam in order to increase the dissipation compared to commonly used plastic foams. This granulate structure was applied to the surface of a rigid aluminum plate and a less rigid steel sheet, and the reduction in the sound pressure of the bodies excited to vibrations in a free-field room was measured. The design of the granulate structure was varied in different ways. The influences investigated included the granulate and fiber material, packing density, grain size and packing thickness. Lightweight and temperature-resistant granules were preferred in the selection process. In order to determine advantageous configurations, all results were compared with those of similarly heavy, commercially available acoustic materials. This was done with regard to the absolute and mass-specific transmission loss of the damping materials, each of which was attached and tested. In addition, the effect of acoustically effective grilles in various arrangements and gap sizes was investigated.
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Engine comparison of two single-cylinder engines
Duration: 19.12.2017 bis 19.03.2018
Two single-cylinder combustion engines from different suppliers were examined, which are operated with natural gas, liquid gas or a mixture of these fuels, as well as being operated as part of a combined heat and power plant. The focus was on the different areas of application of alternative fuels in combustion engines.
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Thermal and acoustic investigations of exhaust gas shielding components
Duration: 01.12.2017 bis 01.03.2018
In this project, several variants of shielding parts of an exhaust system are analyzed comparatively. Thermal and acoustic measurements will be carried out for this purpose.
The multilayer materials used were optimized in advance for certain frequencies using complex simulations. The measurements are therefore also used to calibrate the simulation.
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Loss analysis of an H2 DI single cylinder model
Duration: 01.08.2017 bis 28.02.2018
In the discussion about increased exhaust emissions and CO2 emissions in the transport sector, hydrogen, as a carbon-free fuel, represents a sensible alternative to conventional fuels. In particular, the use of hydrogen in modern combustion engines offers a quick and cost-effective way of decarbonizing the transport sector.
As a result, this project aims to convert a combustion engine, which is initially operated using the conventional diesel process, to hydrogen operation. The hydrogen is initially injected outside the cylinder in the intake system. The hydrogen is then converted to direct injection in the cylinder. These three operating strategies are to be analyzed and evaluated using a loss analysis on a one-dimensional single-cylinder model. This single-cylinder model was derived from a modern commercial vehicle diesel engine. In order to convert to hydrogen operation, some adjustments must be made in the model with regard to hydrogen combustion, which are not stored as standard in the simulation software used.
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Development of a thermal exhaust gas system model
Duration: 01.06.2017 bis 31.12.2017
Due to the current exhaust gas legislation, the demands placed on modern exhaust systems by all car manufacturers and suppliers are increasing. As a result, the calculation and calibration effort involved in the development of these systems is increasing considerably. In order to reduce development costs, one-dimensional simulation models are usually used to test initial system estimates of new or further developments. These models can depict the basic functions of the exhaust systems.
The result of the project is a one-dimensional thermal model of the exhaust system of a mid-range passenger car. This model will be validated using measured data from two operating points. The focus of the modeling is on the simulative calculation of the wall heat losses in the exhaust system. The focus here is on the rear silencer.
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Optical test rig for flow measurement in the water jacket of a diesel car
Duration: 01.07.2016 bis 31.12.2017
Development, construction and commissioning of a cylinder block and cylinder block with optical access for a PIV measurement of the cooling water flow around the cylinder liners. Openings for optical access are created for this purpose. These are closed with the aid of Plexiglas letters. This is followed by a setup with a drive for the water pump, fluid for the measurement and the optical measuring devices. Thanks to the PIV measurement, a flow field can then be calculated, which is used for the validation of 3D CFD simulations.
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Test bench gasoline-water mixture analysis
Duration: 01.06.2016 bis 31.12.2017
Development, construction and commissioning of a test stand for the optical examination of a gasoline-water mixture. The fuel mixture is produced using a high-pressure pump and then examined in an optically accessible pipe. A high-speed camera is used for this purpose, which records the measurement. The result is then evaluated.
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Comparison of the transmission behavior of the main bearings between two cylinder crankcases
Duration: 01.07.2017 bis 31.10.2017
The state of the art has very different designs of cylinder crankcases with different fulfillment of acoustic requirements. Within the scope of this project, two cylinder crankcases are to be compared with regard to their main bearing transmission behavior.
As a result, the different structural characteristics have to be analyzed, the structure-borne noise transmission behavior of the different cylinder blocks evaluated, the correlation between structure-borne and airborne noise in the near and far field examined and a final comparison of the two crankcases carried out.
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Structural-acoustic analysis cylinder crankcase IV
Duration: 01.04.2017 bis 30.09.2017
The state of the art has very different designs of cylinder crankcases with different fulfillment of acoustic requirements. As part of the previous projects (structural-acoustic analysis of cylinder blocks I, II and III), vibroacoustic analyses of various cylinder blocks were carried out and excitation pulses were calculated on a plate as preliminary work for a later transfer of results to the cylinder block. Building on this, further cylinder crankcases are to be measured in this project and added to the benchmarking of the previous projects. On the other hand, the experimental setup will be used to further develop an approach that makes it possible to calculate the coordinates of the excitation pulses on the cylinder crankcase.
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Acoustic fuselage motor V
Duration: 01.07.2016 bis 31.03.2017
As part of previous projects (Rumpfmotor Akustik I, II, III and IV), initial findings for the further development of a diesel engine were obtained by numerical and experimental means.
In order to significantly reduce the sound pressure level of a diesel engine, the relevant structure-borne sound conduction paths are to be examined and weighted at the beginning. The components located in the guide paths are then determined and optimization potentials are identified. The modifications to be carried out can be divided into primary and secondary measures for noise reduction on the engine.
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Measurement and analysis of muzzle noise
Duration: 01.12.2016 bis 01.03.2017
Various microphones in the near and far field are used to record the muzzle noise of different silencers. For the binaural measurements, two additional microphones are placed in the room at a distance of 15 cm from each other, with this stereo microphone setup positioned at the height of the rear silencer. The sound pressure is used as an evaluation parameter for the acoustic behavior. For the evaluation of the microphone measurements, Campbell diagrams, overall level curves, autopower spectra and engine order curves are analyzed comparatively.
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H2 engine simulation
Duration: 01.10.2016 bis 31.01.2017
A 1/0D simulation model of an H2 engine is created on the basis of a commercial vehicle diesel engine. The aim of this project is to provide basic data on the hydrogen engine for test bench testing and to predict the performance of the engine.
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Injection test bench for natural gas injectors
Duration: 01.01.2016 bis 31.12.2016
With the increasing limitation of CO2 emissions, the use of natural gas engines is gaining in importance. In order to make the injection of natural gas into the engine more effective and to specify the equal distribution to the individual cylinders, it is necessary to test the injectors on a test bench and analyze their behavior. This results in the development, construction and commissioning of a test bench for measuring the injection rate of natural gas injectors.
The aim of building a measurement test bench is to further develop the natural gas drive with regard to direct injection, which is already state of the art for gasoline. For this purpose, it is necessary to measure the hydraulic behavior of the developed gas injectors. In the present work, a test rig has been developed with which it is possible to determine the injection rate of direct-injection natural gas injectors and thus to assess the hydraulic behavior of the injector. The test medium is the gas nitrogen, which is frequently used for measurement test benches with regard to transferability to natural gas and has properties that are advantageous for test bench operation. The measuring principle for the test bench is based on the hydraulic pressure rise method. The actual chamber is physically modeled on the combustion chamber of the vehicle. The maximum injection quantity (35 mg) has been calculated for a standard two-liter gasoline engine with 4 cylinders at full load and a speed of 6000 rpm. The pressure change resulting from the injection is recorded by two pressure sensors, a piezoelectric and a piezoresistive pressure sensor.
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Development of a flow test rig for cylinder heads
Duration: 01.06.2016 bis 01.12.2016
The new development is based on the flow measurement principle of the "Anemometric Tester". The software and hardware of the existing test stand is to be revised.
The hardware is built using standard parts, the software has been rewritten and further developed.
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Strategy development for the implementation of an Organic Rankine Cycle
Duration: 01.07.2016 bis 01.12.2016
The aim of this work is to investigate the possible feasibility of an Organic Rankine Cycle for stationary operation in mobile applications. To this end, a simulation program is to be developed using the MATLAB software tool and the REFPROP material database. With MATLAB it is possible to model and display the individual cycle components separately. The aim is to evaluate the possibilities of ORC implementation.
In addition, these results will be used to estimate the minimum requirements for the operation of an ORC and to discuss the transferability of the results to dynamic operation.
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Compatibility testing of NOx sensors
Duration: 01.09.2016 bis 30.11.2016
The effectiveness of the cleaning performance was investigated as part of a previous project "Cleaning a diesel particulate filter" (2012). In the new project, the focus is not on the cleaning performance, but on the compatibility of the chemical cleaner with the NOx sensors below.
For this purpose, an experimental investigation was carried out and the functionality of the NOx sensors was tested and compared before and after cleaning the diesel particulate filter.
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DANA: Simulation of thermal management measures Over8
Duration: 01.05.2016 bis 01.11.2016
As part of the FVV project "Engine heat exchange I-III", a simulation model was developed that can be used to analyze the warm-up of a combustion engine. This tool can be used to incorporate various thermal management measures into the model and directly evaluate its effects on fuel consumption.
The simulation range was extended from starting at 20°C to a starting temperature of 0°C.
During this project, a total of 8 different thermal management measures were implemented in the existing "engine heat exchange model", examined for their effects on warm-up and optimized.
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Acoustic measurement of a gasoline engine with two different cylinder crankcases (aluminum and plastic)
Duration: 01.06.2016 bis 30.09.2016
The acoustic measurement of a petrol engine is intended to analyze and evaluate the advantages and disadvantages of a plastic cylinder crankcase compared to an aluminium version. Two identical cylinder crankcases are available for the measurements.
Two different array shapes (uniform array and combo array) are used to record the spatial sound pressure and sound intensity distributions.
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Seismic-based diesel engine control
Duration: 01.10.2014 bis 30.09.2016
Today's passenger cars with diesel engines are characterized by low CO2 emissions (fuel consumption) and dynamic handling. However, in the lower load and speed range, the diesel engine has a dominating combustion noise compared to the other noise sources.
The first objective of this research project is to demonstrate the transferability of the results of the FVV research project Noise-controlled diesel engine to other diesel engines for a large speed-load range. The engine management system is then to be expanded in such a way that cylinder-selective control of the combustion center of gravity can be implemented. The realization of cylinder-selective control of the combustion focus position and cylinder-selective pre-injection based on a virtual cylinder pressure and noise sensor is another key research objective. The degrees of freedom of the common rail injection system with one main injection and several pre-injections have not yet been fully utilized. The aim is to clarify the potential for improving diesel performance by modifying the pre-injection systems, taking exhaust emissions and fuel consumption into account. Cylinder-selective control of the combustion position and pre-injection also requires status detection of the injection system.
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3D CFD simulation of direct injection of gasoline-water emulsion
Duration: 01.01.2016 bis 01.07.2016
The aim of this work was to simulate a direct water injection system and to investigate its effects on combustion, emissions and engine efficiency. To this end, the basics of the gasoline engine were first explained. The basics of increasing efficiency and performance as well as water injection were also discussed in more detail. To create the 3D CFD model, the 3D base model was first generated using a CAD tool so that the moving mesh could then be created for the solver. In order to be able to define the necessary boundary and initial conditions for the solver, the necessary selections for the mesh also had to be created. Usually, results from 1D models or experimental investigations are used for this purpose. In this case, no data of this type was available, so we started with values from the literature and then used an iteration process to approximate the correct values and settings. At the beginning, settings from sample cases were also studied and included in the present calculation in order to obtain a stable model. The modules and settings relevant to the evaluation were then added and checked for plausibility in individual steps. The respective operating points to be examined had to be fine-tuned in order to create the necessary comparability for the cases. Finally, the results were evaluated using 2D and 3D post-processing.
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Sound generator for electric vehicles
Duration: 01.01.2016 bis 01.06.2016
The proportion of electric vehicles in road traffic will increase in the future. Studies have shown that the acoustic perception of quiet electric vehicles by pedestrians and other road users is sometimes problematic. Drivers also associate the familiar sound of a combustion engine with driving a car. To improve perception, a sound generator was developed, built and put into operation with the speed-dependent reproduction of driving/engine noises.
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Injection tests gasoline-water emulsion
Duration: 01.01.2016 bis 01.05.2016
Reducing pollutant emissions and fuel consumption is always the focus of engine development. With the help of direct petrol injection in conjunction with downsizing concepts, fuel consumption has been further reduced and the thermal efficiency of the petrol engine increased in recent years. Building on this, water injection offers further potential for improvement. In this article, the basics of water injection are presented and the influence of the water content on the spray pattern when injecting a gasoline-water emulsion with a water content of 0 - 100 % is investigated. For this purpose, the spray pattern of a gasoline DI injector in a high-pressure injection chamber is recorded, measured and analyzed using a high-speed camera using the shadow method. Furthermore, experiments on emulsion production are presented and evaluated with regard to production and stability in an internal combustion engine application.
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Injection hydraulics
Duration: 01.01.2016 bis 01.04.2016
The injection hydraulics project dealt with the analysis of rail pressure control. The aim was to expand on the findings from the benchmark injection simulation project and to approximate the results obtained to the measured real state. The simulation models were expanded to include a control structure that uses a physical approach as a control multiplier. The control structure was modeled in a Matlab/Simulink environment and active control was implemented using a co-simulation. In addition, the models were extended to obtain a real measured variable curve. Real system behavior was modeled and relevant influencing variables were determined and investigated.
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Investigation and optimization of acoustic covers mounted on a four cylinder diesel engine
Duration: 01.10.2015 bis 31.03.2016
Acoustically effective partial encapsulation of the cylinder head, belt drive, oil pan and other acoustic radiators is a widely used measure to reduce engine noise. The aim of this project is to investigate the acoustic effectiveness of such encapsulations using a two-layer insulating material. The aim is to determine a shape of the material and a fastening that optimizes the effective sound absorption of the cover. To this end, air gaps of different sizes are created between the insulating material and the acoustic radiator based on the results of previous investigations. In addition, damping fastening elements are developed to reduce the structure-borne sound transmitted to the foam. In addition, vibrometric surface measurements and structural-acoustic simulations are used to identify fastening points for the covers that are characterized by relatively low vibrations.
The investigations are carried out on an acoustic engine test bench with semi-free-field conditions using microphone arrays, individual microphones and accelerometers. Three operating points of the four-cylinder diesel engine are approached in order to be able to estimate the acoustic behavior in the entire engine map.
The results of the project are experimental and simulative findings on the optimum acoustic design of the air space between the cover and the radiator, the method of fixing the cover and the optimum fixing points.
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Hull motor acoustics IV
Duration: 01.05.2015 bis 31.03.2016
As part of previous projects (Rumpfmotor Akustik I, II and III; completed in 2013), initial findings were obtained numerically and experimentally for the further development of a diesel engine. For this purpose, a 3D FE model of the gear drive was set up with regard to the simulation and parameter combinations were investigated. The model was validated by experimental investigations on a dynamic acoustic engine test bench. In addition, optimizations were made to the torsional vibration damper, the oil pump module and the timing belt cover.
Building on this, certain components of a diesel engine are to be vibroacoustically examined, optimized and further developed in this project. The overarching goal is to reduce the overall sound pressure level of the diesel engine.
In order to be able to reduce the sound pressure level of the diesel engine, the relevant structure-borne sound conduction paths should first be examined and weighted. The components located in the guide paths are then considered individually and in combination.
Finally, the annoyance of the diesel nail noise is to be analyzed and calculated.
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Comparative parametrical study of the absorption behavior of two layered foams and fleeces used passive sound reduction
Duration: 08.07.2015 bis 08.11.2015
The subject of this project is two-layer foams and nonwovens. Their structure is characterized by a soft and light damping layer and a stiffer and heavier mass layer. The aim of the study is to investigate the influence of various factors on the sound absorption behavior of the insulation materials. These influences include the type of attachment of the insulating material to the sound-emitting surface, the thickness of the mass layer and the material as a whole, the damping or insulating effect of surface foils and heavy foils and the choice of insulating material. The tests are carried out in a free-field room and accompanied by structural-acoustic simulations. The sound radiation of the panel with the insulating materials is measured in the near field with a microphone array and in the far field with a single microphone. Using the microphone array measurements, the influence of the foams on the sound pressure distribution at characteristic natural frequencies of the overall system is determined.
The result of the project will be general and comparative statements on the influence of the factors mentioned on the sound absorption behavior of the foams mentioned and a numerical model to represent these influences.
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Investigation of the acoustic and thermal influence of cavities between engine encapsulation materials and a metal surface
Duration: 01.04.2015 bis 30.09.2015
In this project, materials for the acoustic and thermal shielding of motors are being investigated. The main aim is to determine the influence of cavities that can exist between the formwork and a surface that radiates sound and heat. The influence of the cavities on sound pressure and intensity in a free-field room in the near and far field is investigated. A test platform designed for this purpose is being developed and the results predicted using a structural-acoustic simulation. The influence of the cavities on thermal radiation is determined using a separate test setup. Here, the shielding material is attached to a heated surface with defined cavities and the heating behavior at surface temperatures characteristic of motors is recorded with a thermal camera. These test results are also approximated beforehand with a simulation.
The result of the project will be general statements about the influence of cavities and gaps between the motor and shielding materials as well as a simulation model for predicting the influence.
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Complex measurement of a gasoline engine with regard to the analysis of thermal-acoustic insulation
Duration: 01.10.2014 bis 31.08.2015
As part of this project, acoustic and thermal measurements are to be carried out on an encapsulated and unencapsulated gasoline engine. This allows the effectiveness of externally applied insulation of the basic engine to be analyzed and evaluated. The insulation itself consists of a foam material applied directly to the corresponding engine components. Depending on the frequency range, acoustic near-field holography or the beamforming method will be used to localize the sound source for the airborne sound measurements and 3D accelerometers will be used for the structure-borne sound measurements. The experimental investigations will be carried out on the dynamic acoustic engine test bench of the Chair of Energy Conversion Systems for Mobile Applications.
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Simulation of heat transfer in VM to reduce friction and CO2 emissions under warm-up conditions (engine heat exchange III)
Duration: 01.03.2013 bis 31.08.2015
The aim of the research is to create an engine simulation model that is suitable for mapping time-varying engine operating states, analyzing the heat flows in terms of amount and direction within the combustion engine depending on the geometry and cylinder position and deriving strategies for controlling the heat flows as required. A diesel engine will be used as an example to demonstrate the potential for reducing fuel consumption and CO2 emissions, with a particular focus on the starting and warm-up phases and operation on short journeys. The integration of the simulation software into complete vehicle models for the optimization of thermal management is planned. The development of a simplified calibration model will greatly simplify the metrological effort involved in the development of new engines, making it more efficient in terms of cost and time. The expected results will contribute to reducing fuel consumption and CO2 emissions.
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Structural-acoustic analysis cylinder crankcase III
Duration: 01.05.2015 bis 31.08.2015
The state of the art has very different designs of cylinder crankcases with different fulfillment of acoustic requirements. Vibroacoustic analyses of various cylinder crankcases were carried out as part of the previous projects (structural-acoustic analysis of cylinder crankcases I and II). Building on this, further cylinder blocks are to be measured in this project and added to the benchmarking of the previous projects. On the other hand, an approach is to be developed with the aid of the test setup that enables the coordinates of the excitation pulses to be calculated.
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ELISA - Modular lightweight components for peripheral e-mobility system solutions
Duration: 01.01.2013 bis 31.03.2015
Building on the preliminary work carried out to date as part of the COMO II project, the engineers at the Chair of Energy Conversion Systems for Mobile Applications (EMA) will develop an intake module, an exhaust gas aftertreatment system and an oil pan for a range extender (diesel engine, displacement < 1000 cm³) in this project, which are specially designed for stationary operation at a few operating points. These weight- and consumption-optimized system components lead to a significant increase in the overall efficiency of the vehicle and thus contribute to the further development of electromobility.
The intake module is designed in such a way that it is flow-optimized to ensure the highest possible degree of delivery using the oscillating tube supercharger. It should meet the requirements of modern series production. It is designed in such a way that interfering natural frequencies are damped or shifted.
The exhaust gas aftertreatment system is designed to reduce the engine's pollutant emissions to Euro 6 level. The system is vibroacoustically optimized using numerical flow simulation methods.
The special feature of the oil pan is its design with an aluminum foam structure, which serves as thermal and acoustic insulation, as well as the functional integration of the oil filter and an oil-water heat exchanger. The heat stored in the oil is to be utilized by the heat exchanger. This component is also being developed with a view to minimizing noise emission.
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COMO II: R1 Combustion processes & fuels
Duration: 01.01.2012 bis 31.12.2014
As part of the follow-up project COMO II, a series diesel engine (downsizing concept, displacement < 1000 cm³) is to be adapted and optimized for use as a range extender in an electric vehicle at the Institute of Mobile Systems, Chair of Energy Conversion Systems for Mobile Applications. In a first step, the motor unit is installed on the test bench and the measurement and control technology is integrated. The aim of this first work package is to create a consumption and emissions map.
In order to reduce the weight of the engine, the turbocharged diesel unit is to be optimized for naturally aspirated operation. In a second work package, the combustion process is adapted to the suction conditions. The aim here is to achieve the EURO6 standard at one or a few selected and optimized operating points with constant or reduced fuel consumption.
In 2012, the engine unit was procured and integrated and adapted into an existing IMS test bench environment. Due to the construction of the single-cylinder unit in COMO I, there is great potential for experience that could be used for this project. In addition to indexing the cylinder pressure, exhaust backpressure and boost pressure signals, fuel consumption and exhaust gas analysis measuring devices for detecting the legally limited emissions (particle count, soot, nitrogen oxides, hydrocarbons and carbon monoxide) were successfully installed on the test bench. In the first step, the engine is controlled via a series control unit. In order to optimize the selected operating points and ranges, an application control unit will be used in the further course of the project. An initial goal in 2012 is to record a consumption and emissions map of the series production engine. This will make it possible to derive consumption- and emission-optimized operating points and ranges for the later range extender operation of the engine in order to be able to develop a charging strategy for different driving scenarios.
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COMO II: R3 Acoustics/Vibrations
Duration: 01.01.2012 bis 31.12.2014
There are plans to make purely battery-powered vehicles suitable for reasonable ranges by adding an additional drive. This is referred to as a "range extender" (RE). This project makes an interdisciplinary scientific contribution to the further development of numerical and experimental methods of vibroacoustics for reducing vibration and noise in electric vehicles with a range extender (diesel engine).
Initial model-based concept studies for noise reduction on the RE are being carried out, with a focus on the development of suitable shells for encapsulating the RE. Building on this, passive full and partial encapsulations are to be investigated and the potential of the acoustic influence of large radiating surfaces is to be determined. One focus is on optimizing the geometry and material properties of capsules to achieve the maximum possible reduction in sound pressure. The temperature field is integrated into the modeling in order to be able to take into account the temperature development from the combustion process. Experimental investigations are carried out on an acoustic engine test bench to develop and validate the models. Finally, the developed thermoacoustic engine capsule will be tested on an assembled diesel engine. This will allow conclusions to be drawn about the potential of the encapsulation to influence noise.
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Investigations into the influence of combustion and engine structure on engine acoustics
Duration: 01.11.2013 bis 30.09.2014
The aim of this project is an overall vibroacoustic analysis of a diesel engine, taking into account combustion variables and the engine structure. To record the combustion excitation, the cylinder pressure is measured for each cylinder. Suitable measurement positions on the engine structure must be selected to investigate and analyze the correlation with the external and internal structure-borne sound conduction path.
The (objectively) measurable parameters for assessing engine acoustic behavior are sound pressure or acceleration and the (subjective) perceptibility is loudness. The investigations into the correlation with combustion are carried out with the aid of signal theory approaches.
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Investigation into charge exchange and charging for a wood gas CHP unit
Duration: 01.09.2013 bis 31.03.2014
The Chair of Energy Conversion Systems for Mobile Applications (EMA) at Otto von Guericke University Magdeburg is reviving an almost forgotten regenerative energy concept for a sustainable and ecological energy supply: the gasification of wood. For such an energy concept, a gas engine is being investigated that defies the qualitatively inferior fuel properties and thus enables lucrative operation for wood gas CHP applications. The gas engine is adapted to the given boundary conditions by simulating the gasification mechanisms, the charge change and the combustion process using simulation tools. This procedure enables design improvement measures to be derived in order to operate the engine close to its efficiency and emission optimum in its early development phase.
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Structural-acoustic analysis cylinder crankcase II
Duration: 01.09.2013 bis 31.01.2014
The state of the art has very different designs of cylinder crankcases with different fulfillment of acoustic requirements. As part of the previous project ("Structural-acoustic analysis of cylinder crankcases"), vibroacoustic analyses of various cylinder crankcases were carried out. Building on this, further cylinder crankcases are to be measured in this project and added to the benchmarking of the previous project. In addition, add-on parts such as the oil pan and cylinder head are to be included in the analysis.
As a result, the different structural features are to be documented, the structure-borne noise transmission behavior of the different cylinder crankcases evaluated and the correlation between structure-borne and airborne noise investigated using correction factors. The correction factors must take into account the material, the surface area and the number of cylinders.
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Research on gas injection (DI) with p>15 bar (up to 500 bar)
Duration: 01.06.2013 bis 31.12.2013
The use of natural gas as a fuel is currently an attractive alternative. The carbon-to-hydrogen ratio of natural gas is 4:1, whereas for petrol it is 2.3:1. As a result, chemical reactions produce less carbon dioxide and more water. Without further optimization of a petrol engine, approx. 25 % less pollutant emissions are possible with natural gas. Currently, all series-produced cars are equipped with intake manifold injection systems. The intake manifold injection causes disadvantages in the filling of the cylinders compared to direct-injection petrol/gasoline engines, which leads to a loss of performance in natural gas operation, for example in the low-end torque range. These and other negative effects can be compensated for or avoided by using direct-injection natural gas injectors. However, the direct injection of natural gas is still at the prototype stage, so there is still a need for research in this area. The main focus here is on pressure supply, injectors, combustion process development and exhaust gas aftertreatment, for which research work was carried out at the Institute for Mobile Energy Conversion Systems.
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Flow investigations on cylinder head prototypes
Duration: 01.05.2013 bis 30.09.2013
A single-cylinder 4-valve cylinder head was measured on the JAROS flow test bench "Anemometric Tester 24 TV" at the Institute of Mobile Systems, Chair of Energy Conversion Systems for Mobile Applications at Otto von Guericke University Magdeburg. On the one hand, the cylinder head was examined with regard to the flow rates aK and aJ (according to Jaros) on the intake and exhaust side, both forwards and backwards. The flow measurements were carried out for valve strokes hv = 1 to 10 mm with an increment of 0.5 mm. Furthermore, the internal cylinder flow (charge movement) of the cylinder head was measured in 16 planes from 10 to 40 mm at three different valve strokes of hv = 2; 5 and 9 mm. The swirl and tumble figures were determined for the individual planes and the flow fields recorded. The flow fields are used to compare and validate the results obtained using CFD simulation. To visualize the measurement results, the result vectors were transferred to an unstructured grid and then displayed in 3D in the form of streamlines, isosurfaces and vector representations.
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Structural-acoustic analysis cylinder crankcase
Duration: 01.03.2013 bis 31.07.2013
The state of the art features very different designs of cylinder crankcases with varying degrees of compliance with acoustic requirements. Due to the clear trend towards lightweight construction, the use of aluminum materials in cylinder crankcases is already widespread. As part of the project, an analysis of a cylinder crankcase made of cast aluminum is to be carried out first. In the further course, comparative studies of other cylinder crankcases with different materials and cylinder numbers will be carried out.
As a result, the different structural characteristics must be analyzed, the structure-borne sound transmission behavior of the different cylinder blocks evaluated, the correlation between structure-borne and airborne sound in the near and far field investigated and recommendations for the definition of suitable target values for the design of acoustically optimal cylinder blocks developed.
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Acoustic III fuselage motor
Duration: 01.02.2013 bis 30.06.2013
As part of previous projects ("Fuselage Engine Acoustics I and II"), initial findings were obtained numerically and experimentally for the further development of a diesel engine. For this purpose, a 3D FE model of the gear drive was set up with regard to the simulation and parameter combinations were investigated. The model was validated by experimental investigations on a dynamic acoustic engine test bench. Building on this, certain components of the diesel engine are to be investigated vibroacoustically in this project.
The aim of this project is to investigate the influence of the engine components torsional vibration damper, oil pump module and water pump on the vibroacoustic engine behavior. This allows noise reduction measures to be derived and implemented.
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Hull motor acoustics II
Duration: 01.10.2012 bis 28.02.2013
The aim of the project is to carry out further experimental and theoretical studies to investigate the acoustic excitations of a diesel engine caused by the gear train and balance shafts. Based on the results of the previous project "Fuselage Engine Acoustics", this project aims to develop an extended and improved calculation model compared to the initial state, which makes it possible to include further, previously unrecorded parameters of the gear drive and the influence of important auxiliary units in the calculation in order to be able to calculate new findings regarding the impact processes and the resulting acoustic excitations realistically. The extended model is used to investigate the influence of different system parameters and to identify possible potential for improvement. Experimental investigations are carried out on an engine test bench to develop and validate the model.
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- Energy sources and energy storage ( Link zur LV im LSF )
- Energy sources and energy storage (Ü) ( Link zur LV im LSF )
- Fahrzeugemissionen ( Link zur LV im LSF )
- Fahrzeugemissionen (Ü) ( Link zur LV im LSF )
- Verbrennungsmotoren II ( Link zur LV im LSF )
- Wasserstofftechnologie und Wasserstoffantriebe ( Link zur LV im LSF )
- Wasserstofftechnologie und Wasserstoffantriebe ( Link zur LV im LSF )
