In order to reduce tail-pipe hydrocarbon emissions from SI gasoline engines, rapid catalyst warm-up and improvement of catalyst conversion efficiency are important. There are many reports which have been published by manufacturers and research institutes on this issue. For further reduction of tail-pipe hydrocarbon emissions, it is necessary to reduce engine-out hydrocarbon emissions and to improve after treatment, during the time the catalyst is not activated.This paper quantitatively analyzed the fuel amount of intake port and cylinder wall-wetting, burned fuel and engine-out hydrocarbon emissions, cycle by cycle in firing condition, utilizing a specially designed analytical engine.The effect of mixture preparation and fuel properties for engine-out hydrocarbon emissions, during the cold engine start and warm-up period, were quantitatively clarified.


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    Titel :

    Mixture Preparation and HC Emissions of a 4-Valve Engine with Port Fuel Injection During Cold Starting and Warm-up


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1995



    Erscheinungsdatum :

    1995-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Mixture Preparation and HC Emissions of a 4-Valve Engine with Port Fuel Injection during Cold Starting and Warm-up

    Sekiguchi, K. / Saito, K. / Imatake, N. et al. | British Library Online Contents | 1996




    Mixture Preparation and HC Emissions of a 4 valve Engine with Port Fuel Injection During Cold Starting and Warm-Up

    Takeda, K. / Yaegashi, T. / Sekiguchi, K. et al. | British Library Conference Proceedings | 1994


    Mixture Preparation in a SI Engine with Port Fuel Injection During Starting and Warm-Up

    Fox, J. W. / Heywood, John B. / Min, K. D. et al. | SAE Technical Papers | 1992