A cycle-resolved two-dimensional flame visualization technique using Mie-scattering from submicron sized smoke particles added to the homogeneous charge mixture of a spark-ignition engine has been developed. This diagnostic technique was applied to a square piston engine with four windows. Pulsed laser sheets were generated by a copper vapor laser at a frequencies of 6 kHz. The light scattered by the smoke particles was collected by a drum camera on high sensitivity photographic film.The flame contours were analyzed using fractal analysis and complex Fourier transform procedures. Radii of curvature, wrinkling factors and turbulent burning velocities have been determined at different engine speeds and equivalence ratios.


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    Title :

    Cycle-Resolved Two-Dimensional Flame Visualization in a Spark-Ignition Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Zettlitz, A. (author) / Ziegler, G.F.W. (author) / Meinhardt, P. (author) / Herweg, R. (author) / Maly, R. (author) / Pfister, W. (author)

    Conference:

    1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1988



    Publication date :

    1988-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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