A three-dimensional model for premixed- charge naturally-aspirated rotary engine combustion is used to identify combustion chamber geometries that could lead to increased indicated efficiency for a lean (equivalence ratio =0.75) natural gas/air mixture. Computations were made at two rpms (1800 and 3600) and two loads (approximately 345 Kpa and 620 Kpa indicated mean effective pressure). Six configurations were studied. The configuration that gave the highest indicated efficiency has a leading pocket with a leading deep recess, two spark plugs located circumferentially on the symmetry plane (one after the minor axis and the other before), a compression ratio of 9.5, and an anti-quench feature on the trailing flank.


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    Titel :

    3-D Computations of Premixed-Charge Natural Gas Combustion in Rotary Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Bracco, F. V. (Autor:in) / Abraham, J. (Autor:in)

    Kongress:

    International Congress & Exposition ; 1991



    Erscheinungsdatum :

    01.02.1991




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    3-D computations of premixed-charge natural gas combustion in rotary engines

    Abraham,J. / Bracco,F.V. / John Deere,US et al. | Kraftfahrwesen | 1991




    A combustion model for homogeneous charge natural gas rotary engines

    Sierens,R. / Univ.of Gent,Gent,BE | Kraftfahrwesen | 1989