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)
Effect of combustion chamber deposits and driving conditions on vehicle exhaust emissions
SAE Paper
SAE Meeting ; 1969 Exhaust gases
1969
24 pages
Aufsatz (Konferenz)
Englisch
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Effect of Combustion Chamber Deposits and Driving Conditions on Vehicle Exhaust Emissions
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