A fiber optic in-cylinder combustion pressure sensor system design is presented that exhibits the necessary operation and cost characteristics required for combustion pressure-based engine control applications. The sensor system consists of a small, spark plug-integrated, rugged, and high temperature operable sensor head; a low cost optoelectronic transceiver including LEDs, photodiodes, and simple optical couplers; and a DSP-based signal processing circuitry intended for future ASIC integration. A theoretical approach is developed to predict sensor response and signal-to-noise performance. The agreement between theoretical analysis and experimental results demonstrates that the present low cost system design results in required signal-to-noise performance and provides pressure measurement accuracies better than 5%. Engine tests performed with the fiber optic sensors demonstrate signal-to-noise performance comparable to instrumentation grade piezoelectric combustion pressure transducers as well as better temperature stability. The fiber optic pressure sensor can readily detect engine misfire and mis-timing of spark advance.


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    Titel :

    Low-Cost Spark Plug-Integrated Fiber Optic Sensor for Combustion Pressure Monitoring


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Patania, Andy (Autor:in) / Vokovich, Dan (Autor:in) / He, Gang (Autor:in) / Wlodarczyk, Marek (Autor:in) / Kluzner, Mike (Autor:in) / Wall, Tom (Autor:in) / Astrakhan, Victor (Autor:in)

    Kongress:

    International Congress & Exposition ; 1993



    Erscheinungsdatum :

    01.03.1993




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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