Some results of a systematic study on sources of unburned hydrocarbons from direct injection diesel engines are presented. The following possible sources are considered and investigated experimentally and/or analytically: local over-mixing, local under-mixing, bulk quenching, cyclic misfire, cyclic variation, and wall effects. The significance of each source under a variety of operating conditions including simulated deceleration, light loads, high loads, and simulated acceleration are discussed.The results show that the formation of unburned hydrocarbons is mainly controlled by transient fuel-air mixing and bulk quenching processes. The fraction of fuel appearing as unburned hydrocarbons in the exhaust is greatest at light loads and retarded conditions.


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    Titel :

    Sources of Hydrocarbon Emissions from Direct Injection Diesel Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yu, R. C. (Autor:in) / Shahed, S. M. (Autor:in) / Wong, V. W. (Autor:in)

    Kongress:

    1980 Automotive Engineering Congress and Exposition ; 1980



    Erscheinungsdatum :

    01.02.1980




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Sources of hydrocarbon emissions from direct injection diesel engines

    Yu,R.C. / Wong,V.W. / Shahed,S.M. et al. | Kraftfahrwesen | 1980


    Predicting Hydrocarbon Emissions From Direct Injection Diesel Engines

    Lakshminarayanan, P.A. | Online Contents | 2002


    Sources of hydrocarbon emissions from a small direct injection diesel engine

    Matsui,Y. / Sugihara,K. / Nissan Motor,JP | Kraftfahrwesen | 1987


    Sources of Hydrocarbon Emissions from a Small Direct Injection Diesel Engine

    Sugihara, Kunihiko / Matsui, Yukio | SAE Technical Papers | 1987


    Sources of hydrocarbon emissions from a small direct injection diesel engine

    Matsui,Y. / Sugihara,K. / Nissan Motor,JP | Kraftfahrwesen | 1986