A study has been made of an automotive direct-injection diesel engine in order to identify the effects of the combustion chamber geometry on combustion, with special emphasis focused on a re-entrant combustion chamber.Conventional combustion chambers and a re-entrant one were compared in terms of the combustion process, engine performance and NOx and smoke emissions. Heat transfer calculations and heat release analyses show that the re-entrant chamber tends to reduce ignition lag due to the higher temperatures of the wall on which injected fuel impinges.Analyses of turbulent flow characteristics in each chamber indicate that the re-entrant chamber enhances combustion because of the higher in-cylinder velocity accompanied by increased turbulence. Further, analyses of in-cylinder gas samples show lower soot levels in the re-entrant chamber. As a result, a good compromise can be achieved between fuel economy and exhaust emissions by retarding the fuel injection timing.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effects of Combustion Chamber Geometry on Diesel Combustion


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Uchida, Noboru (Autor:in) / Ikeya, Nobuyukj (Autor:in) / Saito, Takeshi (Autor:in) / Daisho, Yasuhiro (Autor:in)

    Kongress:

    1986 SAE International Off-Highway and Powerplant Congress and Exposition ; 1986



    Erscheinungsdatum :

    01.09.1986




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Effect of combustion chamber geometry on diesel combustion

    Saito,T. / Daisho,Y. / Uchida,N. et al. | Kraftfahrwesen | 1986


    Effects of a Combustion Chamber Shape on the Diesel Combustion Phenomena

    Shimotsu, Masateru / Shimonaka, Toshiyasu / Suma, Toshiaki et al. | TIBKAT | 1984




    The effect of combustion chamber geometry on HCCI combustion

    Christensen,M. / Johansson,B. / Hultqvist,A. et al. | Kraftfahrwesen | 2002