This study measured the fuel concentration near a spark plug using a laser infrared absorption method. An IR spark plug sensor with a double-pass measurement length was developed. A He-Ne laser with a wavelength of 3.392 μm, which coincides with the absorption line of hydrocarbons, was used as the light source. In order to confirm the measurement accuracy, the concentrations of a methane-air mixture were measured in a compression-expansion engine. Then, the IR spark plug sensor was used for measurements in a 4-stroke spark-ignition engine fuelled with isooctane. The air/fuel ratio measured using this system clearly agreed with the mean air/fuel ratio.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    In-Situ Fuel Concentration Measurement Near Spark Plug by 3.392 μm Infrared Absorption Method-Application to Spark Ignition Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 World Congress & Exhibition ; 2003



    Publication date :

    2003-03-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    In-situ residual gas concentration measurement near a spark plug in a motorcycle spark-ignition engine

    Kawahara,N. / Tomita,E. / Yasuda,H. et al. | Automotive engineering | 2007



    In-situ fuel concentration measurement near spark plug by 3,392 micrometer infrared absorption method

    Kawahara,N. / Tomita,E. / Nishiyama,A. et al. | Automotive engineering | 2006


    Measurement of cycle resolved air-fuel ratio near the spark plug in a spark ignition engine

    Cho,H. / Lee,J. / Lee,K. et al. | Automotive engineering | 2000