The purpose of the test program is to improve the existing conversion procedures for relating engine dynamometer tests in the laboratory to actual on-road emissions and to evaluate new modal approaches to estimate these emissions. The objectives of this project are to: (1) define on-road emissions from HDDVs; (2) assess agreement among engine and chassis dynamometers and on-road emission factors; (3) evaluate current conversion factors for dynamometer data and develop appropriate ones if needed; and (4) develop a modal emissions model that relates highway facility type (including grade) to speeds/accelerations of the vehicle, loaded weight, power demand on the vehicle, and emissions of NOx, CO, and VOCs.


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    Title :

    Development of On-Road Emission Factors Heavy-Duty Diesel Vehicles Using a Continuous Sampling System


    Contributors:
    D. B. Harris (author) / F. G. King (author) / E. Brown (author)

    Publication date :

    1998


    Size :

    22 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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