The effects of mixture turbulence and mean flow velocity on flame kernel formation in a spark-ignition engine were investigated using a disc-shaped optically accessible side chamber.Three-dimensional flow predictions and LDA measurements were performed to get a better understanding of the flow field in this combustion chamber. Thin wire electrodes were located at a peripheral and a central position introduced into the combustion chamber via the glass windows. High-speed schlieren films at 40 kHz were taken from two orthogonal directions to visualize in detail the formation and development of the flame kernel. The purpose was to gain a better understanding of the interaction of turbulence and flame during the first milliseconds after spark breakdown of a transistorized coil ignition system and a capacitor discharge ignition system.This study shows that the flame kernel is changed by the turbulence at flame radii of O.5 to 1 mm depending on turbulence intensity. At flame radii of more than 10 mm a fully developed turbulent flame has been formed. The influence of turbulence on the turbulent burning velocity during the flame kernel formation is less than during the main combustion period.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Flow Field Effects on Flame Kernel Formation in a Spark-Ignition Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Zettlitz, A. (Autor:in) / Ziegler, G.F.W. (Autor:in) / Begleris, Ph. (Autor:in) / Herweg, R. (Autor:in)

    Kongress:

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



    Erscheinungsdatum :

    01.10.1988




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Flow field effects on flame kernel formation in a spark-ignition engine

    Herweg,R. / Begleris,P. / Zettlitz,A. et al. | Kraftfahrwesen | 1988


    Flame kernel formation in a spark-ignition engine

    Herweg,R. / Ziegler,G.F. / Univ.Stuttgart,Inst.f.Physikalische Elektronik,DE | Kraftfahrwesen | 1990


    Research of formation and growth of flame kernel in spark ignition engine

    Yoshinaga,T. / Igashira,T. / Kawai,H. et al. | Kraftfahrwesen | 1995


    Instantaneous flow field effects on the flame kernel in spark ignition engine by simultaneous optical diagnostics

    Pajot,O. / Mounaim-Rousselle,C. / Univ.of Orleans,FR | Kraftfahrwesen | 2000


    The effects of initial flame kernel conditions on flame development in spark ignition engine

    Bianco,Y. / Cheng,W.K. / Heywood,J.B. et al. | Kraftfahrwesen | 1991