An onboard diagnosis method for misfire detection that utilizes a superposed output of combustion pressure sensors (CPS's) is proposed and examined. We consider a model case where piezo-electric type CPS's are installed for each cylinder of a four-stroke-four-cylinder gasoline engine. The outputs of the CPS's are linearly combined to obtain the superposed signal. We show that the superposed signal exhibits a characteristic change when a misfire occurs. A waveform analysis of the signal leads to a clear detection of misfires. A combination setup with a non-intrusive type of fiber-optic CPS that is installed into the cylinder head gasket is also discussed as a future option for the sensing system.


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    Titel :

    A Method of Misfire Detection by Superposing Outputs of Combustion Pressure Sensors


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Kodama, A. (Autor:in) / Komachiya, M. (Autor:in) / Kurihara, N. (Autor:in) / Watanabe, S. (Autor:in) / Fumino, T. (Autor:in) / Sakaguchi, T. (Autor:in)

    Kongress:

    International Fall Fuels and Lubricants Meeting and Exposition ; 1998



    Erscheinungsdatum :

    1998-10-19




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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