An experimental investigation of the effects of squish motion on turbulence generation, burn-rate and engine performance has been undertaken in a Ricardo Hydra single-cylinder research engine. An experimental combustion chamber design incorporating a number of squish generated jets was used to enhance the turbulent motion in the chamber during combustion. Flow-field measurements were made with a hot-wire anemometer in order to characterize the turbulence field. Measurements of brake thermal efficiency and mass burn-rate showed that enhanced turbulence generated by combustion chamber geometry is effective in improving performance under lean operating conditions. A single squish generated jet motion directed towards the spark plug resulted in the highest thermal efficiency during high speed lean operation, while burn-rate analysis indicated that squish action was most effective during the main burn period.


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    Titel :

    The Effects of Squish Motion on the Burn-Rate and Performance of a Spark-Ignition Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Tippett, E. C. (Autor:in) / Evans, R. L. (Autor:in)

    Kongress:

    Future Transportation Technology Conference & Exposition ; 1990



    Erscheinungsdatum :

    1990-08-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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