The interaction between in-cylinder flow and injected fuel spray in direct ignition spark ignition (DISI) engines have been investigated. The study shows that the major effect of intake flow on the fuel spray is that the induced flow tends to make the spray collapse. This deformation of spray will prevent the fuel spray from spreading out, evaporating, and mixing well with air and also increase fuel wetting on the wall. It has been demonstrated that the intake flow effect on the fuel spray can be alleviated by increasing the masking between the two intake ports. Swirl and tumble motion effects on the fuel air mixing and wall wetting in DISI engines were also studied. A counter-rotating vortex structure is identified in the case with tumble dominating in-cylinder flow structure. This vortex structure tends to hinder fuel air mixing and increase wall wetting. It is shown that some swirl motion is helpful to improve mixing quality and decrease the wall wetting.


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    Titel :

    Modeling of the Interaction of Intake Flow and Fuel Spray in DISI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yang, Jialian (Autor:in) / Yi, Jianwen (Autor:in) / Trigui, Nizar (Autor:in) / Boussarsar, Riadh (Autor:in) / Anderson, Richard (Autor:in) / Han, Zhiyu (Autor:in)

    Kongress:

    SAE 2000 World Congress ; 2000



    Erscheinungsdatum :

    2000-03-06




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Modeling of the interaction of intake flow and fuel spray in DISI engines

    Yi,J. / Han,Z. / Yang,J. et al. | Kraftfahrwesen | 2000


    DISI Spray Modeling Using Local Mesh Refinement

    Torres, David J. / Yi, Jianwen / Xue, Qingluan et al. | SAE Technical Papers | 2008


    DISI spray modeling using local mesh refinement

    Xue,Q. / Kong,S.C. / Torres,D.J. et al. | Kraftfahrwesen | 2008


    DISI Fuel Spray Effects During Simulated Injection Timing

    Hutchison, Aaron / Wicker, Ryan | SAE Technical Papers | 2001


    DISI fuel spray effects during simulated injection timing

    Hutchison,A. / Wicker,R. / Univ.of Texas at El Paso,US | Kraftfahrwesen | 2001