Numerical simulation was carried out to investigate the effect of transient in-cylinder air motion on fuel spray characteristics in a side-injection gasoline direct injection engine. KIVA-3V code with a fuel spray impingement model was used to simulate a swirl flow driven stratification for a late injection mode. For better understanding of in-cylinder air motion during the induction and compression strokes a flat piston and a bowled piston are compared with each other. Also a simplified simulation considering only the compression stroke was compared with the full simulation. As the high-pressure fuel spray jet flow is much stronger than ambient swirl and tumble flow in the present combustion system the spray development shows similar behavior in both simulations.


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    Title :

    Effect of Air Motion on Fuel Spray Characteristics in a Gasoline Direct Injection Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Cho, Nam-Hyo (author) / Lee, Sang H. (author) / Kim, Yong-Jin (author)

    Conference:

    International Congress & Exposition ; 1999



    Publication date :

    1999-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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