THE EFFECT OF AMBIENT TEMPERATURE ON EXHAUST EMISSIONS OF CARS WITH EXPERIMENTAL EMISSION CONTROLS

Three production cars and seven cars with various experimental exhaust emission control systems were tested to determine the effect of winter weather ambient temperatures on exhaust emissions. All of the cars were tested at 70, 40, and 20 degrees F, and one was tested at O degrees F using the 1972 EPA test schedule. Modal and bag emission data as well as catalytic converter temperature data were obtained. There was an increase in HC and CO emissions as ambient temperature was reduced. NO emissions emissions did not vary substantially with ambient temperature. /GMRL/

• Corporate Authors:

  Society of Automotive Engineers

  485 Lexington Avenue
  New York, NY  United States  10017
• Authors:
  • Miles, D L
  • Homfeld, M F
• Publication Date: 1974-10

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Carbon monoxide; Catalytic converters; Emission control systems; Hydrocarbons; Materials selection; Nitric oxide; Nitrogen oxides; Pollutants; Temperature; Testing
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00095923
• Record Type: Publication
• Report/Paper Numbers: SAE 741052
• Files: TRIS
• Created Date: Jul 2 1975 12:00AM