This paper presents results on the phenomenon of knocking (detonation) during combustion in a single-cylinder spark ignition engine. The investigation of knocking combustion was made possible by observing in-cylinder flame propagation with a measuring technique that uses optical fibers coupled with photo-multipliers.The results indicate that knocking combustion appears to occur as a result of autoignition and/or acceleration of the flame front in the squish crevices. At high knock intensities, the flame front velocity can be supersonic.The occurrence of knock damage does not necessarily correspond with location of knock onset. Rather, knock damage is observed at a location where pressure waves, induced by detonation, are reflected and accompanied by pressure peaks.


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    Titel :

    Detection of Flame Propagation During Knocking Combustion by Optical Fiber Diagnostics


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Kollmeier, H.-P. (Autor:in) / Spicher, U. (Autor:in)

    Kongress:

    1986 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1986



    Erscheinungsdatum :

    1986-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Detection of Flame Propagation During Knocking Combustion by Optical Fiber Diagnostics

    Spicher,U. / Kollmeier,H.P. / Tech.Univ.Aachen,Inst.f.angew.Thermodynamik,DE | Kraftfahrwesen | 1986



    Visualisation of knocking combustion

    British Library Online Contents | 2008