A correlation between engine dynamometer- and vehicle-aged catalysts has been established for novel lean-burn applications. A lean-burn, 1.8-L Ford Mondeo with a close-coupled three-way catalyst and an underfloor lean-NOx trap was used for this study. Vehicle aging of the emissions control system was done using a prescribed driving schedule. Engine dynamometer aging was done using a four-event aging cycle modified for lean-burn applications. The two aging methods were compared using maximum NOx conversion efficiencies measured during a two-mode dynamometer evaluation cycle. It was found that 75 h of four-event dynamometer aging is equivalent to 80,500 km of prescribed vehicle driving.


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    Title :

    Correlation between Dynamometer- and Vehicle-Aged Catalysts for Automotive Lean-Burn Applications


    Additional title:

    Sae Technical Papers


    Contributors:
    Cumming, B. (author) / Webb, D. (author) / Gibbons, E. F. (author) / Kisenyi, J. M. (author) / Stark, R. (author) / Marshall, R. A. (author) / Hoost, T. E. (author)

    Conference:

    International Congress & Exposition ; 1998



    Publication date :

    1998-02-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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