Engine and aftertreatment models have been developed in support of gasoline direct injection (GDI) engine development and aftertreatment system design. A brief overview of the engine models that were used to project emissions and fuel economy performance for the GDI engine is presented. Additionally, the construction and validation of a NOx trap aftertreatment model is described in considerable detail. The insights and increased understanding which have been gained regarding the trade-offs between engine out emission targets, aftertreatment performance, and emission constrained fuel economy benefits for direct injection gasoline engines are reviewed and discussed.


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    Title :

    Engine and Aftertreatment Modeling for Gasoline Direct Injection


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fall Fuels and Lubricants Meeting and Exposition ; 1998



    Publication date :

    1998-10-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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