The purpose of this study was to investigate how autoignition leads to the occurrence of pressure oscillations. That was done on the basis of in-cylinder visualization and analysis of flame images captured with a high-speed camera using an optically accessible engine, in-cylinder pressure measurement and measurement of light emission from formaldehyde (HCHO). The results revealed that knocking intensity tended to be stronger with a faster localized growth speed of autoignition. An investigation was also made of the effect of exhaust gas recirculation (EGR) as a means of reducing knocking intensity. The results showed that the application of EGR advanced the ignition timing, thereby reducing knocking intensity under the conditions where knocking occurred.


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    Titel :

    A Study of the Factors Determining Knocking Intensity Based on High-Speed Observation of End-Gas Autoignition Using an Optically Accessible Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Iijima, Akira (Autor:in) / Koga, Hibiki (Autor:in) / Kudo, Hiroki (Autor:in) / Takahata, Shuhei (Autor:in) / Ishikawa, Takahiro (Autor:in) / Yamashita, Takahiro (Autor:in) / Izako, Takuya (Autor:in) / Kiura, Toshiro (Autor:in)

    Kongress:

    SAE/JSAE Small Engine Technology Conference ; 2018



    Erscheinungsdatum :

    2018-10-30




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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