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Dualhybrid-Cold Start Performance Study for a HEV with Two Combustion Engines

Zhang, Hongyang; Toedter, Olaf; Blesinger, Georg; Koch, Thomas

Abstract (englisch):
The fuel economic and emission performance of an innovative electric hybrid vehicle (HEV), Dualhybrid, with two internal combustion engines (ICEs) under cold start conditions was studied. Sub-models including powertrain, lubrication and cooling system as well as exhaust system were built and integrated into the models of Dualhybrid and two other reference models: Base model and Fullhybrid model.
Coupled lubrication and the exhaust systems of the two ICEs are proposed. The effect of the combination of oil heating and electric heating on the fuel consumption of Dualhybrid was investigated. The results show that the coupled lubricating system of Dualhybrid is beneficial to improve the fuel economy in cold start. The method of hybrid heating can provide a sufficient heating power of the cabin in the initial stage of cold start without declining the fuel economic performance significantly. Coupling of exhaust systems shortens the cold start process of the catalysts, allowing Dualhybrid to achieve a better emission performance in cold start. Through the study, Dualhybrid proves to be a clean and efficient HEV concept.

Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Proceedingsbeitrag
Publikationsmonat/-jahr 04.2021
Sprache Englisch
Identifikator ISSN: 0148-7191
KITopen-ID: 1000131916
Erschienen in SAE WCX Digital Summit, April 13 - 15, 2021
Veranstaltung SAE WCX Digital Summit (2021), Online, 13.04.2021 – 15.04.2021
Verlag SAE International
Seiten 2021-01-0396
Serie SAE Technical Paper Series ; 2021-01-0396
Vorab online veröffentlicht am 06.04.2021
Schlagwörter Hybrid vehicle combustion engine CO2
Nachgewiesen in Scopus
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