The effect of after-injection on exhaust gas emissions from a DI diesel engine with a common rail injection system was experimentally investigated for a range of operating conditions. The results showed that over the whole of the operating range, some reduction in smoke emissions can be achieved with after-injection, without deterioration in thermal efficiency and other emission characteristics. The optimum quantity of after-injection for smoke reduction is 20% of the total fuel supply, and the optimum timing is just after the main injection. Visualization in a bottom view type engine showed that with after-injection, soot formation in the main-injection decrease more due to a smaller quantity of fuel than without after-injection, and soot formation with after-injection is insignificant.


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    Titel :

    Improvements in Diesel Combustion with After-Injection


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Numata, Akira (Autor:in) / Ogawa, Hideyuki (Autor:in) / Takahashi, Kensuke (Autor:in) / Yoshida, Takuya (Autor:in)

    Kongress:

    Powertrains, Fuels and Lubricants Meeting ; 2008



    Erscheinungsdatum :

    2008-10-06




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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