The effect of CVS test parameters other than temperature on exhaust emissions was determined. Dynamometer inertia weight, road load horsepower, vehicle engine tune adjustments and smoothing the emission test driving schedule parameters were evaluated. Actual vehicle road load horsepower was measured by coast-down time and engine manifold vacuum. Tests were performed on 50 1968 through 1975 model year vehicles. 1975 and Modified 1972 Federal Test Procedures were used. Observed differences in exhaust emission and fuel economy test results were tested for statistical significance.
Evaluation of CVS Test Procedures
1976
136 pages
Report
No indication
English
Air Pollution & Control , Air pollution , Exhaust gases , Monitors , Automobiles , Tests , Dynamometers , Quality control , Fuel consumption , Gas analysis , Data processing , Tables(Data) , Statistical analysis , Measuring instruments , Maintenance , Standards , Ignition systems , Experimental design , Spark ignition engines , Carbon monoxide , Nitrogen oxides , Regulations , Automobile exhaust , Air pollution sampling , Air fuel ratio
Test Procedures for Vehicle Compatibility Evaluation
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