A two-dimensional model for the simulation of flow and premixed combustion in engines is extended to include a knock sub-model. An autoignition model based upon a degenerately branched chain mechanism /14/ was modified for this purpose. Rapid-compression machine experiments could be reproduced as well as engine knocking tendencies. The coexistence of the new knock model and the overall combustion model of Arrhenius type was arranged by a suitable switch-off criterion for the autoignition reactions. Simulation of pressure waves and respective flowfields under knocking conditions are also shown to be possible. A parametric study of the influence of engine geometry, EGR and swirl on knocking tendency is presented.


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    Titel :

    Multidimensional Modelling of Knocking Combustion in SI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Schäpertöns, H. (Autor:in) / Lee, W. (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1985



    Erscheinungsdatum :

    1985-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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