The light emissions from a spark discharge were observed by inserting a fibre optic cable through the centre electrode of a spark plug, to investigate the possibility of determining the fuel-air ratio in the spark gap at ignition with spectroscopy.The total broadband light emission from the spark and the light emission centred at 385 nm from the cyanogen radical (chemical formula CN), were observed for varied ϕ and residual gas concentrations. Additionally, the spark breakdown voltage, Vs, was monitored for the experiments. All light emissions were observed to be dependent on Vs, which is influenced by mixture composition, temperature and pressure. With a spark gap size of 0.7 mm, the CN emission shows promise for evaluation of the cyclical variation of ϕ for 0.9 < ϕ <1.1.


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    Titel :

    Spark Spectroscopy for Spark Ignition Engine Diagnostics


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1995



    Erscheinungsdatum :

    1995-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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    Tomorrow's Spark-Ignition Engine

    Tauschek, Max J. | SAE Technical Papers | 1965


    Spark Ignition Engine Progress

    Lucas, Albert G. | SAE Technical Papers | 1967


    Combustion Diagnostics of a Spark Ignition Engine Using the Spark Plug as an Ion Probe

    Yoshiyama, S. / Tomita, E. / Japan Society of Automotive Engineers | British Library Conference Proceedings | 2001


    Combustion Diagnostics of a Spark Ignition Engine Using a Spark Plug as an Ion Probe

    Tomita, Eiji / Yoshiyama, Sadami | SAE Technical Papers | 2002