This report examines the relationship among automotive fuel economy, ambient temperature, cold-start trip length, and drive-train component temperatures of four 1977 vehicles. Fuel economy, exhaust emission, and drive-train temperatures were measured at temperatures of 20° F, 45° F, 70° F, and 100° F using the 1975 Federal Test Procedure (75 FTP) and the EPA highway fuel economy test (HWFET).
Experimental data were obtained in dynamometer tests of a 1978 Ford 140 CID engine to determine fuel consumption and emissions (hydrocarbon, carbon mo...
Experimental data were obtained in dynamometer tests of a 1978 Ford 140 300 CID engine to determine fuel consumption and emissions (hydrocarbon, carbo...
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United States Department of Transportation
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