Experimentally determined and theoretically calculated concentrations of unburned fuel in the exhaust products of a combustion system amenable to theoretical calculations have been compared. Propane-air mixtures were spark-ignited in the center of spherical combustion bombs of various sizes. By this means, the relative importance of the quench phenomenon (a surface effect) has been evaluated. The results show that simple application of quench theory is not consistent with the experimental results. Use of a modified quench theory, based on the results from the bomb experiments, for theoretical calculations of unburned hydrocarbon in engine exhaust indicates that the exhaust unburned hydrocarbon concentration from a large-displacement, low-compression ratio engine should be much lower than that of a small-displacement, high-compression ratio engine.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Unburned Hydrocarbons in Closed Vessel Explosions, Theory versus Experiment Applications to Spark Ignition Engine Exhaust


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1967 Automotive Engineering Congress and Exposition ; 1967



    Publication date :

    1967-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Reduction of Unburned Hydrocarbons for Spark Ignition Engine Using Oxygenated Fuel Blends

    Miao, H. / Huang, Z. / Li, J. et al | British Library Online Contents | 1998


    An improved model for spark ignition engine exhaust hydrocarbons

    Sodre,J.R. / Yates,D.A. / Pontifical Catholic Univ.,BR et al. | Automotive engineering | 1997


    An Improved Model for Spark Ignition Engine Exhaust Hydrocarbons

    Yates, D. A. / Sodré, J. R. | SAE Technical Papers | 1997


    An Improved Model for Spark Ignition Engine Exhaust Hydrocarbons

    Sodre, J. R. / Yates, D. A. / SAE | British Library Conference Proceedings | 1997