The fluorescence characteristics of different carbonyl compounds were investigated in a pressurized bomb using an excimer laser (308 nm) for excitation. The partial pressure of the carbonyl compounds and air was varied between 0 - saturation pressure and 0 - 5 bar, respectively. The fluorescence signal of different ketones increased almost linearly with vapour pressure. It was found to be almost independent of air pressure indicating only a weak quenching influence of oxygen. Ethylmethylketone (EMK) has a boiling temperature and vapour pressure similar to gasoline. Therefore, the applicability of EMK for measuring 2-D fuel distributions in a combustion chamber was tested in a transparent SI square piston engine. EMK was injected into the intake manifold by a conventional injector for studying the fuel/air mixing during the intake and compression stroke at 1.000 rpm. From the 2-D fluorescence signals 2-D air/fuel ratios were calculated using calibration data from bomb experiments.


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    Title :

    Quantitative 2D LIF Measurements of Air/Fuel Ratios During the Intake Stroke in a Transparent SI Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Wagner, E. (author) / Meier, F. (author) / Köhler, J. (author) / Zahn, M. (author) / Wirth, R. (author) / Maly, R. R. (author) / Lawrenz, W. (author) / Stolz, W. (author) / Bloss, W. H. (author)

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1992



    Publication date :

    1992-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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