A new spark plug design in which the spark discharge is preceded by a corona wind is studied. The plug electrodes are designed so as to produce a corona wind when ever a high voltage (but lower than the breakdown voltage) is applied. The corona wind carries the ignited mixture away from both electrodes in order to reduce heat loss from the ignition mixture by heat transfer to the electrodes. The new system facilitates the ignition of lean mixtures, and provides an efficient means for increasing ignition efficiency, improving cyclic variation and reducing HC emission. High speed photographs of the ignition process of the new system in a constant volume bomb have shown that the ignited mixture is carried out from the electrode gap at a speed of 5 m/s; a speed which has been found to be optimal in other studies. Preliminary studies with a conventional 4-cylinder engine have clearly shown promising results.


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    Titel :

    A corona spark plug system for spark-ignition engines


    Weitere Titelangaben:

    Ein Sprühentladungs-Zündkerzenzsystem für Ottomotoren


    Beteiligte:
    Sher, E. (Autor:in) / Ben-Yaish, J. (Autor:in) / Spector, Y. (Autor:in) / Pokryvailo, A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1992


    Format / Umfang :

    8 Seiten, 13 Bilder, 2 Tabellen, 15 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    A Corona Spark Plug System for Spark-Ignition Engines

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    Maehlner, E. | Engineering Index Backfile | 1943


    Spark ignition engines versus compression ignition engines

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    Electrohydrodynamic ignition system for spark ignition engines

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