Two vehicle tests to determine effect of leaded and unleaded gasoline on exhaust emissions were carried out; first test involved 122 cars without exhaust control systems and other 36 cars with systems; hydrocarbon exhaust emissions of leaded and unleaded cars increased during initial period of mileage accumulation and leveled out as equilibrium was reached; average hydrocarbon emission levels of leaded cars were higher than those of unleaded with difference or net lead effect amounting to 7% in both tests; no significant differences in carbon monoxide or nitrogen oxide emission levels were observed; photochemical reactivity levels were essentially same; results of study of effect of mileage accumulation conditions. (17544)


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    Title :

    Effect of combustion chamber deposits and driving conditions on vehicle exhaust emissions


    Additional title:

    SAE Paper


    Contributors:
    Pahnke, A.J. (author) / Conte, J.F. (author)

    Conference:

    SAE Meeting ; 1969 Exhaust gases


    Published in:

    Publication date :

    1969


    Size :

    24 pages


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effect of Combustion Chamber Deposits and Driving Conditions on Vehicle Exhaust Emissions

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