The objective of this study was to develop an innovative microwave-induced plasma ignition system to improve the fuel economy of a current engine and achieve a higher efficiency without any configuration modifications. A new plasma generation technique was proposed for a stable and intense ignition source. A microwave plasma combustion system was developed consisting of a spark plug, microwave transfer system, and control system. A magnetron, like that found in a microwave oven, was used as a microwave oscillator. The spark plug had a microwave antenna inside that generated plasma in the engine cylinders. The microwave transfer system transmitted microwave power from the oscillator to the antenna. Combustion experiments were performed using a single-cylinder research engine. The microwave plasma expanded the range of lean operating conditions. The single-cylinder engine had an indicated mean effective pressure (IMEP) of 275 kPa at an engine speed of 2000 rpm. The threshold of the lean limit was defined as a coefficient of variation (COV) of 5% at the IMEP. For the plasma ignition case, the combustion was stable even in the lean condition, and the COV remained under 2% up to an air-to-fuel ratio (A/F) of 22%. The lean limit improved from 19.3 to 24.1 with the plasma ignition.


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    Titel :

    Research and Development of Microwave Plasma Combustion Engine (Part II: Engine Performance of Plasma Combustion Engine)


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Nishiyama, Atsushi (Autor:in) / Jeong, Haeyoung (Autor:in) / Katano, Hiroki (Autor:in) / Kaneko, Masashi (Autor:in) / Ikeda, Yuji (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2009



    Erscheinungsdatum :

    20.04.2009




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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