To meet future pollutant emissions standards, it is crucial to be able to estimate the composition of the combustion chamber charge on a cycle by cycle basis. This charge consists of fresh air, fuel and residual gas from the previous cycle. Unfortunately, the residual gas fraction cannot be directly measured.Therefore, a model of residual gas fraction as a function of engine parameters and operating parameters has been developed. The model has been calibrated with exhaust pipe hydrocarbon measurements using a successive dilution method.


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    Title :

    Residual Gas Fraction Measurement in Spark Ignition Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Charlet, A. (author) / Giansetti, P. (author) / Higelin, P. (author) / Chamaillard, Y. (author)

    Conference:

    7th International Conference on Engines for Automobile ; 2005



    Publication date :

    2005-09-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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