A Study of Emissions from 1967-1974 Light-Duty Vehicles in Denver, Houston, and Detroit
A Study of Emissions from 1967-1974 Light-Duty Vehicles in Denver, Houston, and Detroit
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- New search for: D. R. Liljedahl
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A laboratory emissions study was conducted on a sample of 1967-1974 model-year vehicles operating in Denver, Houston and Detroit. Emissions from 540 vehicles, 180 from each city, were investigated. Sound level tests were also performed on 85 vehicles from the San Antonio area. Exhaust emission test were performed on each vehicle in the as-received condition using the 1975 Federal Test Procedure. Evaporative emission tests were performed on 20 1973 model-year vehicles in the Denver area using the canister collection procedure of the Federal Register and the SHED testing techniques of SAE J 171. A variety of additional exhaust emission tests were also performed. Modal emissions data were developed from 75 of the 1972, 1973 and 1974 model-year vehicles in each site using Surveillance Driving Sequence and steady state testing procedures. Emissions from air conditioned vehicles were investigated in Houston and Detroit using a sequence and steady state testing procedures. Emissions from air conditioned vehicles were investigated in Houston and Detroit using a sequence of 4 modified FTP hot start tests. Emissions from loaded vehicles and vehicles towing trailers were also investigated. Sound level tests were performed at the wide open throttle test condition in accordance with the SAE J986a procedure and at the five operating conditions of the EPA Use Cycle Modes. Additional tests were conducted for use in sound level contour development.
Document information
A Study of Emissions from 1967-1974 Light-Duty Vehicles in Denver, Houston, and Detroit
1974
436 pages
Report
No indication
English
Air Pollution & Control , Air pollution , Exhaust gases , Automobiles , Test methods , Air conditioning equipment , Standards , Trailers , Hydrocarbons , Carbon monoxide , Carbon dioxide , Nitrogen oxides , Towed vehicles , Acoustic measurement , Tables(Data) , Colorado , Texas , Michigan , Light duty vehicles , Automobile exhaust , Denver(Colorado) , Houston(Texas) , Detroit(Michigan)