A direct fuel-injection two-stroke cycle engine operated with neat methanol was investigated. The engine performance, combustion and exhaust-gas characteristics were analyzed experimentally and compared for operation with a carburetor, EFI injection at the intake manifold, and EFI injection at the scavenging port.The power and the brake thermal efficiency of the direct fuel-injection engine were higher than those of engines operated with a carburetor and either of the two EFI methods.The exhausted unburnt fuel of the direct fuel-injection engine was lower than that for operation with a carburetor, and formaldehyde and the CO concentration were of the same level as for operation with the carburetor and EFI methods. The NOx concentration of the direct fuel-injection was half the level of the result of carburetor operation. Because a stratified charge using direct fuel-injection activated the combustion of the lean mixture which increases working gas temperature, therefore, the vaporization of injected fuel was promoted by the elevated temperature of the residual gas.


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    Titel :

    Comparative Investigation on Fuel Feed Methods in Two-Stroke Cycle Methanol Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Tsuda, Hiroshi (Autor:in) / Enoki, Kiyoshi (Autor:in) / Sawa, Norihiro (Autor:in) / Kajitani, Shuichi (Autor:in) / Hayashi, Sigenobu (Autor:in) / Kubota, Yuzuru (Autor:in)

    Kongress:

    International Fuels & Lubricants Meeting & Exposition ; 1992



    Erscheinungsdatum :

    1992-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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