A two-zone predictive model for the performance of a spark ignited gas engine is described. In this model, an effective mass burning rate and energy release pattern based on an estimate of the combustion duration are developed. For any given engine and set of operating conditions the pressure-time and temperatures-time histories, and hence performance parameters such as indicated power output, peak pressure, optimum spark timing, etc. are predicted. Through monitoring the chemical reaction activity, while employing detailed chemical kinetics of the end gas within the unburnt zone, the incidence of autoignition and knock can also be predicted. A dimensionless knock criterion that compares the specific energy release due to end gas preignition reaction activity to the specific energy release due to combustion of the fuel is developed and used to test for the incidence of knock and its severity. The predicted performance appears to agree well with measured experimental behaviour when methane is the fuel.


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    Titel :

    Prediction of the Performance of Spark Ignition Gas Engines Including Knock


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Karim, G. A. (Autor:in) / Gao, J. (Autor:in)

    Kongress:

    International Fuels & Lubricants Meeting & Exposition ; 1993



    Erscheinungsdatum :

    1993-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Prediction of the Performance of Spark Ignition Gas Engines Including Knock

    Karim, G. A. / Gao, J. / SAE | British Library Conference Proceedings | 1993


    Knock in Spark Ignition Engines

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    Knock in Spark Ignition Engines

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