A total of one hundred and fifty randomly procured in-use vehicles were tested in Mesa, Arizona during the summer months of 1997. Running loss hydrocarbon emissions were measured using a dynamometer enclosed in an evaporative emissions enclosure (SHED). New vehicle evaporative emission certification test equipment specifications, test procedures, and quality control limits were used, with specified exceptions required to test publicly owned in-use vehicles. A thorough inspection of vehicle components related to evaporative emissions was performed on each vehicle following the initial test with the vehicles in the 'as-received' condition. Thirty vehicles were selected for repairs and were retested following repairs. Ten vehicles were selected for as-received replicate testing.
Measurement of Running Loss Emissions from in-Use Vehicles (CRC Project E-35)
1998
90 pages
Report
Keine Angabe
Englisch
Air Pollution & Control , Road Transportation , Air pollution monitoring , Evaporative emission measurement , Vehicle air pollution , Gasoline vapors , Fuel tank emissions , Fuel tank evaporation , Carburetor emissions , Leaks , Nitrogen oxides , Hydrocarbons , Vehicle inspection , Vehicle maintenance , Repairs , Exhaust emission tests , Temperature effects , Diurnal variations , Certification , Graphs(Charts) , Tables(Data) , Running loss , Hot soak emissions , Mesa(Arizona) , VT(Variable Temperature) , SHED(Sealed Housing for Evaporative Determination)
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