In-cylinder flame propagation and its impact on thermal characteristics of the combustion chamber were studied by using a new high-speed spectral infrared imaging system. In this work, successive spectral IR images of combustion chamber events were captured while varying several parameters, including fuel/air, spark timing, speed, and warming-up period. Some investigation of cyclic variation, knock, and high-temperature components during the non-combustion period was also conducted.It was found that the spectral images obtained in both short and long wavelength bands exhibited unique pieces of in-cylinder information, i.e., (qualitative) distributions of temperature and combustion products, respectively. During the combustion period, the temperature of early-formed combustion products continued to increase while the flame front temperature, e.g. near the end gas zone, remained relatively low. The exhaust valve emitted strong radiation starting from the early stage of the combustion period. The spark plug emitted the strongest radiation during the non-combustion period. Considerable cyclic variation in growth of the flame front and completion of the reaction was observable. The radiation from both spectral bands became stronger as the engine warm-up period increased.While operating the engine with the addition of n-heptane in the intake to produce knock, we captured spectral IR images of the end gas right before it was abruptly consumed. The combustion products that were formed in the end-gas volume upon knock, showed no evidence of higher temperature than other zones in the combustion chamber.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    High-Speed Spectral Infrared Imaging of Spark Ignition Engine Combustion


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Jiang, H. (Autor:in) / Kent, J. C. (Autor:in) / Rhee, K. T. (Autor:in) / McComiskey, T. (Autor:in) / Olan, Y. (Autor:in)

    Kongress:

    International Congress & Exposition ; 1993



    Erscheinungsdatum :

    01.03.1993




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    High-speed spectral infrared imaging of spark ignition engine combustion

    McComiskey,T. / Jiang,H. / Qian,Y. et al. | Kraftfahrwesen | 1993



    Combustion in a high-speed rotary valve spark-ignition engine

    Chow, P H P / Watson, H C / Wallis, T | SAGE Publications | 2007


    Combustion on a high-speed rotary valve spark-ignition engine

    Chow,P.H. / Wartson,H.C. / Wallis,T. et al. | Kraftfahrwesen | 2007