A simulation study was performed to evaluate the potential fuel economy benefits of integrating a dual-mode SI-HCCI (homogeneous charge compression ignition) engine into various vehicle architectures. The vehicle configurations that were considered include a conventional vehicle and a mild parallel hybrid electric vehicle. The two configurations were modeled and compared in detail for a given engine size (2.0 L) over the EPA UDDS (city) and highway cycles. The results show that the dual-mode engine in the conventional vehicle offers a modest gain in vehicle fuel economy of approximately 5-7%. The gains were modest because the baseline (the SI engine in the conventional vehicle) is relatively advanced with a six-speed automated manual transmission. The mild parallel hybrid with the SI engine achieved 32% better fuel economy than the conventional vehicle in the city, but only 6% on the highway. For the dual-mode engine in the mild parallel hybrid, a specific control strategy was used to manipulate engine operation in an attempt to minimize the number of engine mode transitions and maximize the time spent in HCCI. The parallel hybrid with the dual-mode engine and modified control strategy provides dramatic improvements of up to 48% for city driving, demonstrating that the addition of HCCI has a more significant impact with mild parallel hybrids than with conventional vehicles. Finally, a systematic study of engine sizing provides guidelines for selecting the best option for a given vehicle application.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Integration of a dual-mode Si-HCCI engine into various vehicle architectures


    Contributors:


    Publication date :

    2013


    Size :

    8 Seiten, 11 Bilder, 1 Tabelle, 23 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Managing SI/HCCI Dual-Mode Engine Operation

    Santoso, Halim / Matthews, Jeff / Cheng, Wai K. | SAE Technical Papers | 2005


    Managing SI/HCCI dual-mode engine operation

    Santoso,H. / Matthews,J. / Cheng,W.K. et al. | Automotive engineering | 2005


    Method of Ion Current Detection for HCCI Combustion on SI/HCCI Dual Mode Engine

    Dong, G. / Wu, Z. / Li, L. et al. | British Library Conference Proceedings | 2009


    Method of ion current detection for HCCI combustion on SI/HCCI dual mode engine

    Guangyu Dong, / Zhijun Wu, / Liguang Li, et al. | IEEE | 2009


    A turbo charged dual fuel HCCI engine

    Olsson,J.O. / Tunestal,P. / Haraldsson,G. et al. | Automotive engineering | 2001