AMBIENT TEMPERATURE AND TRIP LENGTH -- INFLUENCE ON AUTOMOTIVE FUEL ECONOMY AND EMISSIONS

Experimental work was done to examine the interrelationships among automotive fuel economy, ambient temperature, cold-start trip length, and drive-train component temperatures of four 1977 vehicles. Fuel economy, exhaust emissions, and drive-train temperatures were measured at temperatures of 20, 45, 70 and 100 deg F using the 1975 Federal test procedure and the Environmental Protection Agency's highway fuel economy test. Results showed that vehicles used for short cold-start trips consume fuel at a much greater average rate than during long trips, and the effect is magnified with decreasing ambient temperature. /SAE/

Media Info

  • Pagination: 13 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00193506
  • Record Type: Publication
  • Report/Paper Numbers: SAE 780613
  • Files: TRIS
  • Created Date: May 26 1979 12:00AM