This paper deals with a passenger-car direct-injection-diesel-engine with electronically controlled unit-injector. It is being investigated how far emissions and fuel-consumption can be influenced by exhaust-gas-recirculation (EGR) and pilot-injection especially when they are in combination with each other.The results reveal that the NOx-emission can be decreased much more by EGR than by pilot-injection. The lowest NOx-emissions however can only be reached by combination of EGR and pilot injection.. In the investigated area of the engine map a decrease in soot-emission can be obtained with rising EGR-rates by pilot-injection. On the other hand pilot-injection results in an increase of soot emission at high EGR-rates at the engine operating point N=2000 rpm, bmep=2 bar.Pilot-injection in combination with EGR effects no deterioration of fuel-consumption and HC-emission.


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    Titel :

    Exhaust-Emission Optimization of DI-Diesel Passenger Car Engine with High-Pressure Fuel Injection and EGR


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Willig, Egbert (Autor:in) / Schommers, Joachim (Autor:in) / Mikulic, Leopold (Autor:in) / Kühn, Michael (Autor:in)

    Kongress:

    International Congress & Exposition ; 1993



    Erscheinungsdatum :

    1993-03-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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