The exhaust emissions and fuel consumption have been measured for three passenger registered in Denmark according to the exhaust emissions standards of October, 1990. In addition to standard regulatory driving cycles, the cars were also tested at constant speeds from 85 to 135 km/h and over a special motorway driving cycle. All of the vehicles satisfied the standards for NO(sub x) while one vehicle exceeded the standards for CO by a factor of 2, and barely exceeded the HC standard. Comparisons with the results of a recent study conducted in Germany confirm that there is a significant increase in the level of emissions for transient operation under motorway conditions. Emissions levels for the three vehicles at constant speeds between 110 and 135 km/h are significantly lower than emissions levels for transient operation for the same average speeds. CO and HC emissions levels for the Motorway Driving Cycle were much higher than for the Highway Driving Cycle, and were at levels near those from the Urban Driving Cycle. Average NO(sub x) emissions levels from the Motorway Driving Cycle were 30 to 50% higher than those from the Urban and Highway Driving Cycles. (au).


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    Title :

    Emissions from 3 passenger cars at high speeds


    Contributors:

    Publication date :

    1992


    Size :

    27 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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