This paper presents the results of study low-speed Pre-ignition (LSPI) on highly supercharged spark ignition engines. It was investigated on both a gasoline direct injection (GDI) engine with turbo and a port fuel injection (PFI) engine with turbo to find the individual characteristics of LSPI. In terms of the PFI engine, influence of different parameters control strategy such as air-fuel ratio and injection timing on pre-ignition was investigated. In terms of the GDI engine, influence of different control strategies such as injection quantity, first and second injection timing, the second injection ratio, coolant temperature, exhaust valve closing (EVC) and intake manifold temperature (MAT) were investigated. In addition, CFD analysis was extensively used to understand test results including wall film, air-fuel ratio distribution and temperature distribution at top dead centre (TDC). For GDI engine in this paper, pre-ignition (PI) results from the combine action of wall film, temperature distribution at TDC and air- fuel ratio distribution at TDC. Enrich air-fuel rate have effective suppression of low-speed Pre-ignition on the GDI engine and the PFI engine.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation of Low-Speed Pre-Ignition in Boosted Spark Ignition Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Zhang, Desheng (author) / Fu, Dingyuan (author) / Qiao, Haibo (author) / Zhang, Jing (author) / Han, Liwei (author) / Zhu, Tao (author)

    Conference:

    SAE 2015 World Congress & Exhibition ; 2015



    Publication date :

    2015-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Study of low-speed pre-ignition in boosted spark ignition engine

    Okada,Y. / Miyashita,S. / Izumi,Y. et al. | Automotive engineering | 2014


    Study of Low-Speed Pre-Ignition in Boosted Spark Ignition Engine

    Miyashita, Shigeki / Izumi, Yoshihiro / Okada, Yoshihiro et al. | SAE Technical Papers | 2014


    Optical diagnostics of knocking in a boosted spark ignition engine

    Tornatore,C. / Merola,S.S. | Automotive engineering | 2011


    Fundamental approach to investigate pre-ignition in boosted spark ignition engines

    Zadeh,A. / Rothenberger,P. / Nguyen,W. et al. | Automotive engineering | 2011


    The effect of exhaust-gas-recirculation on low-speed pre-ignition in boosted spark ignition engines

    Amann,M. / Alger,T. / Mehta,D. et al. | Automotive engineering | 2011