To understand the effects of crevices on the engine-out hydrocarbon emissions, a series of engine experiments was carried out with different piston crevice volumes and with simulated head gasket crevices. The engine-out HC level was found to be modestly sensitive to the piston crevice size in both the warmed-up and the cold engines, but more sensitive to the crevice volume in the head gasket region. A substantial decrease in HC in the cold-to-warm-up engine transition was observed and is attributed mostly to the change in port oxidation.


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    Titel :

    The Effects of Crevices on the Engine-Out Hydrocarbon Emissions in SI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Heywood, John B. (Autor:in) / Min, Kyoungdoug (Autor:in) / Cheng, Wai K. (Autor:in)

    Kongress:

    International Congress & Exposition ; 1994



    Erscheinungsdatum :

    01.03.1994




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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