A simulation model is presented for open chamber direct injection diesel engines. This model is an extension of phenomenological multi-zone thermodynamic models with emphasis on stochastic description of combustion processes and thermodynamic properties of the charge. This combination of stochastic treatment coupled with deterministic description of flow and spray development gives significant improvements in the predictions of thermochemical sensitive processes such as ignition and pollutant formations.The equilibrium composition and thermodynamic property model is extended to allow partially burned elements and to cover the full fuel-air ratio range as present in diesel combustion. A new mixing model is proposed to provide a more realistic description of the initial phase of mixing which strongly affects the burn rate. This model is compared with several existing models from the literature with respect to burnrate and PDF predictions. The overall model is demonstrated to correlate well with experiments in terms of engine performance. Representative examples of NOx and soot emission predictions are presented as functions of inlet pressure, over-all equivalence ratio, EGR and fuel injection timing.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Stochastic Combustion Model of Direct Injection Diesel Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Borgnakke, C. (Autor:in) / Xiao, Y. (Autor:in)

    Kongress:

    International Fuels & Lubricants Meeting & Exposition ; 1991



    Erscheinungsdatum :

    01.10.1991




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A stochastic combustion model of direct injection diesel engines

    Xiao,Y. / Borgnakke,C. / Univ.of Michigan,Ann Arbor,US | Kraftfahrwesen | 1991


    A stochastic approach to model the combustion process in direct-injection diesel engines

    Ikegami,M. / Shioji,M. / Koike,M. et al. | Kraftfahrwesen | 1984


    Combustion modelling for direct injection diesel engines

    Micklow, G.J. | Online Contents | 2001


    Combustion modelling for direct injection diesel engines

    Micklow, G. J. / Gong, W. | SAGE Publications | 2001


    Combustion modelling for direct injection diesel engines

    Micklow,G.J. / Gong,W. / Univ.of Alabama,US | Kraftfahrwesen | 2001