During the period 1980-1988, emission measurements have been carried out on heavy duty vehicles for investigation of different fuels and exhaust gas treatments. In all cases there has been reference tests carried out using standard diesel fuel without control devices as catalysts and particulate emission traps. Also tests have been performed to map the emissions from the Swedish heavy duty vehicles. All tests performed according to the 13 mode test cycle are reported. About 350 tests have been performed on 128 vehicles. The results are presented as mean values mostly in diagrams. Heavy buses, heavy trucks and medium sized trucks intended for distribution in cities are reported in separate groups. There has been no emission rules for the type of vehicles studied and thus the changes in emissions and fuel consumption mostly have been a result of technical development and the strive for lower fuel consumption. Emissions of CO and HC has been considerably lowered but for NO(sub x) no change can be seen for medium size trucks and for the heavy duty trucks an increase is seen. For the buses however, a decrease in NO(sub x) emission can be seen, probably due to the demand from city traffic companies to have buses with low emissions.


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    Title :

    Emissions from Heavy Diesel Vehicles: Measurements 1980-1988


    Contributors:
    A. Laveskog (author)

    Publication date :

    1989


    Size :

    32 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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