Various configurations of high-pressure-loop EGR system for a heavy-duty turbocharged diesel engine have been studied through CFD and performance simulation. Dual-EGR piping between the intake- and exhaust-manifolds with the ‘exhaust-pulse ejector’ at the junction of the exhaust manifold were found promising with respect to higher EGR ratio at high load, less pumping loss and higher volumetric efficiency. A reed valve in each EGR passage was effective in that respect. It was also found that combining with venturi tubes or intake-resonance-charging could enhance the above-mentioned effects. Some of these effects have been experimentally proven on a real engine.


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    Title :

    Optimization of a Dual-Intake/Exhaust/EGR System with the Exhaust-pulse Ejector for a Heavy-duty Turbocharged Diesel Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    JSAE/SAE International Fuels & Lubricants Meeting ; 2007



    Publication date :

    2007-07-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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