The in-cylinder hydrocarbon (HC) mole fraction was measured on a cycle-resolved basis during simulated starting and warm-up of a port-injected single-cylinder SI research engine on a dynamometer. The measurements were made with a fast-response flame ionization detector with a heated sample line. The primary parameters that influence how rapidly a combustible mixture builds up in the cylinder are the inlet pressure and the amount of fuel injected; engine speed and fuel injection schedule have smaller effects. When a significant amount of liquid fuel is present at the intake port in the starting process, the first substantial firing cycle is often preceded by a cycle with abnormally high in-cylinder HC and low compression pressure. An energy balance analysis suggests that a large amount of liquid vaporization occurs within the cylinder in this cycle. Additionally, it was found that prevaporizing the fuel using a specially designed heated injector is effective for rapid starting and reduction of overfueling requirements during warm up.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

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


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Fox, J. W. (Autor:in) / Heywood, John B. (Autor:in) / Min, K. D. (Autor:in) / Cheng, W. K. (Autor:in)

    Kongress:

    International Fuels & Lubricants Meeting & Exposition ; 1992



    Erscheinungsdatum :

    1992-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Mixture preparation in a SI engine with port fuel injection during starting and warm-up

    Fox,J.W. / Min,K.D. / Cheng,W.K. et al. | Kraftfahrwesen | 1992


    Visualization of Mixture Preparation in a Port-Fuel Injection Engine During Engine Warm-up

    Min, Kyoungdoug / Cheng, Wai K. / Shin, Younggy | SAE Technical Papers | 1995


    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, Keiso / Saito, Kimitaka / Sekiquchi, Kiyonori et al. | SAE Technical Papers | 1995