A Medium Heavy-Duty Truck (MHDT) schedule, developed by the California Air Resources Board (ARB), was examined experimentally to determine its suitability as a future research tool. The MHDT was developed to aid in emissions characterization of trucks with 14,001 to 33,000 lb. gross vehicle weight, exercised on a chassis dynamometer. This weight range encompasses a wide variety of vehicles, with varying power to weight ratios and with synchronized manual, unsynchronized manual, and automatic transmissions. A major objective of this program was to examine repeatability of emissions data from MHDT driven through this schedule. The MHDT schedule consisted of three modes; namely, a Lower Speed Transient, a Higher Speed Transient, and a Cruise mode. The maximum speeds of these modes were 28.9, 58.2 and 66.0 mph, respectively.


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    Title :

    Medium Heavy-Duty Truck Test Cycle Evaluation


    Contributors:
    N. N. Clark (author) / M. Gautam (author) / W. S. Wayne (author) / D. W. Lyons (author)

    Publication date :

    2004


    Size :

    50 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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