Manufacturers of heavy-duty diesel engines are facing increasingly stringent, emission standards. These standards have motivated new research efforts towards improving the performance of diesel engines. The objective of the present program is to develop a comprehensive analytical model of the diesel combustion process that can be used to explore the influence of design changes. This will enable industry to predict the effect of these changes on engine performance and emissions. A major benefit of the successful implementation of such models is that engine development time and costs would be reduced through their use. The computer model is based on the three-dimensional KIVA-II code, with state-of-the-art submodels for spray atomization, drop breakup / coalescence, multi-component fuel vaporization, spray/wall interaction, ignition and combustion, wall heat transfer, unburned HC and NOx formation, and soot and radiation. The accuracy of the predictions is assessed by comparison with available experimental data. Improved combustion, wall heat transfer and spray/wall impingement submodels have been implemented in KIVA during the first year activity. In addition, work is in progress on a revised atomization model, since preliminary results show that existing atomization models are inaccurate under conditions of high gas temperature and pressure (e.g., turbocharged conditions). Finally, a methodology is being developed for modeling the intake flow process to provide more realistic initial conditions for engine computations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    3-D Modeling of Diesel Engine Intake Flow, Combustion and Emissions


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Rutland, C.J. (Autor:in) / Reitz, Rolf D. (Autor:in)

    Kongress:

    International Off-Highway & Powerplant Congress & Exposition ; 1991



    Erscheinungsdatum :

    1991-09-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    3-D modeling of diesel engine intake flow, combustion and emissions

    Reitz,R.D. / Rutland,C.J. / Univ.of Wisconsin-Madison,Engine Research Center,US | Kraftfahrwesen | 1991


    Three dimensional modeling of diesel engine intake flow, combustion and emissions

    Reitz,R.D. / Rutland,C.J. / Univ.of Wisconsin-Madison,US | Kraftfahrwesen | 1995


    Three Dimensional Modeling of Diesel Engine Intake Flow, Combustion and Emissions

    Reitz, R. D. / Rutland, C. J. / SAE et al. | British Library Conference Proceedings | 1995


    Toward Predictive Modeling of Diesel Engine Intake Flow, Combustion and Emissions

    Rutland, C. J. / Pierpont, D. / Hampson, G. et al. | SAE Technical Papers | 1994


    3-D modeling of diesel engine intake flow, combustion and emissions

    Reitz,R.D. / Rutland,C.J. / Univ.of Wisconsin-Madison,US | Kraftfahrwesen | 1991