The UPS292sc, a late injection DISC (direct-injection stratified-charge) engine, has demonstrated extraordinary multifuel and cold starting capabilities. In this paper in-cylinder measurements of gas temperatures and pressures during & cold start are reported. Analysis of the results clearly indicates that the traditional description of the ignition process does not adequately explain cold starting in a late injection DISC engine. Alcohol droplets directed onto an operating spark plug at -20 °C were observed to ignite. It is believed that ignition proceeds via energy transmission from the alternating current spark, independent of the compressive heating. Ignition is therefore virtually independent of ambient temperature or fuel volatility.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Compression Temperatures in a Cold Cranking Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1988



    Publication date :

    1988-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Compression temperatures in a cold cranking engine

    Jorgensen,S.W. / General Motors,US | Automotive engineering | 1988


    Engine Cranking at Arctic Temperatures

    DeCarolis, J. J. / Stanley, R. L. / Meyer, W. E. | SAE Technical Papers | 1955


    Cold Cranking Team: Battery, Cables, Cranking Motor, Engine Oil

    Pettit, C. W. / Rowls, G. A. / Cameron, G. L. | SAE Technical Papers | 1964


    The Cold Cranking Simulator and British Engine Cranking Studies

    Hackett, C. E. S. / Marsden, K. / Hollinghurst, R. et al. | SAE Technical Papers | 1972


    Cold engine cranking torque requirement analysis

    Houldcroft, John / Zhou, Quanbao | SAE Technical Papers | 2007