It is important to develop the technique for measuring the cycle-to-cycle variation of combustion in order to reduce the fuel consumption of the commercial spark ignition engine. In previous study, we had proposed using the spark plug as an ion probe to measure the appearance time of maximum pressure under the lean mixture conditions of the research engine. In this paper the combustion diagnostics for the commercial engine was performed using the spark plug as an ion probe. Under idling conditions the ion current often appeared during the exhaust process. This ion current is dominated by the flame contact area and the flame velocity. In this case there is good correlation between the characteristic value of the ion current and the indicated mean effective pressure (IMEP). Finally using the spark plug as an ion probe can detect the combustion quality under conditions with large cyclic variation.


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    Titel :

    Combustion Diagnostics of a Spark Ignition Engine Using a Spark Plug as an Ion Probe


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Tomita, Eiji (Autor:in) / Yoshiyama, Sadami (Autor:in)

    Kongress:

    SAE Powertrain & Fluid Systems Conference & Exhibition ; 2002



    Erscheinungsdatum :

    2002-10-21




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Combustion diagnostics of a spark ignition engine using a spark plug as an ion probe

    Yoshiyama,S. / Tomita,E. / Okayama Univ.,JP | Kraftfahrwesen | 2002


    Combustion Diagnostics of a Spark Ignition Engine Using the Spark Plug as an Ion Probe

    Yoshiyama, S. / Tomita, E. / Japan Society of Automotive Engineers | British Library Conference Proceedings | 2001



    Spark Spectroscopy for Spark Ignition Engine Diagnostics

    Wallace, James S. / Merer, R. Mark | SAE Technical Papers | 1995