This paper describes the results of an experimental investigation of the exhaust gas assisted fuel reforming process as a means of achieving reduction of both smoke and NOx diesel engine emissions. Using a reforming mini-reactor with exhaust gas from a single-cylinder DI diesel engine, diesel fuel was reformed and a hydrogen-rich gas was produced. The effects of the reforming process on the engine operation were studied by adding simulated reformer product gas to the engine inlet. In this way, the engine was operated as if a reformer would have been incorporated in the exhaust gas recirculation system (EGR) system providing the engine with ‘reformed EGR’ (REGR). Lower levels of REGR resulted in simultaneous reduction of smoke and NOx while increased REGR reduced smoke further but tended to increase NOx. With appropriate adjustment of the injection timing the adverse effects on NOx were overcome while smoke was still kept at low levels and the engine fuel consumption and efficiency were improved. The effects of REGR on cylinder pressure, heat release, emissions and fuel economy are presented and discussed.


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    Title :

    Exhaust Gas Fuel Reforming for Diesel Engines - A Way to Reduce Smoke and NOX Emissions Simultaneously


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    2004 SAE Fuels & Lubricants Meeting & Exhibition ; 2004



    Publication date :

    2004-06-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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