Research on extended expansion engine was carried out in order to enhance thermal efficiency in general purpose engines. A four-jointed linkage was used between the connecting rod and the crank pin of a standard piston-crank system and provides an Atkinson thermo dynamic cycle.Thermal efficiency of an engine with a compression ratio of 12.4 and an expansion ratio of 18.1 was compared to an engine with a compression ratio of 9.4 and an expansion ratio of 13.6.Measured indicated thermal efficiency of prototyped engine operated by natural gas was 38.7%, a 2.6% increase, as predicted in the numerical simulation.


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    Titel :

    Research on Extended Expansion General-Purpose Engine-Efficiency Enhancement by Natural Gas Operation-


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Koga, Hibiki (Autor:in) / Watanabe, Sei (Autor:in) / Kono, Shohei (Autor:in)

    Kongress:

    Small Engine Technology Conference & Exposition ; 2010



    Erscheinungsdatum :

    2010-09-28




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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