The short time available for injection and mixing in high-speed engines requires an accurate modeling of the fuel related processes to obtain a valuable in-cylinder charge description, and then a good combustion performance prediction.An advanced version of the KMB code of IFP has been used to compute a racing engine. It includes a fitted on experiments spray model, a comprehensive wall-film model, the AKTIM ignition and ECFM combustion models. A major difficulty was the necessity to compute numerous cycles before reaching a cycle-independent solution. A procedure has been defined to minimize calculation time. Another difficulty was the high concentration of liquid in some zones, which requested a careful meshing.Effects such as the influence of the strong acoustic waves on the spray dynamic, the wall wetting effects on the engine time response, injector position on fuel distribution in the cylinder, charge homogeneity on the combustion process have been investigated. The obtained trends are discussed qualitatively.


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    Title :

    Port Fuel Injection and Combustion Simulation of a Racing Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    2003 JSAE/SAE International Spring Fuels and Lubricants Meeting ; 2003



    Publication date :

    2003-05-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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