AUTOMOTIVE COLD-START CARBON MONOXIDE EMISSIONS AND PREHEATER EVALUATION

Fairbanks and Anchorage, Alaska, experience high wintertime ambient levels of carbon monoxide (CO). Emissions from starting automobile engines in cold weather are thought to be a major source of CO. A quantitative procedure for determining startup CO emissions was developed. The startup emissions were measured as a function of soak time at several low ambient temperatures. The performance of engine preheaters in reducing the startup CO at the various soak times and temperatures was estimated. The data scatter was too great to draw any firm conclusions; however, the length of cold-soak time appeared to have a stronger effect on cold-start CO emissions than did soak temperatures (0 to -30 C). Compared to no preheat, continuous preheat during an overnight cold soak can reduce the cold-start CO emissions by 20 to 90%.

• Corporate Authors:

  U.S. Army Cold Regions Research and Engineering Laboratory

  72 Lyme Road
  Hanover, NH  United States  03755-1290
• Authors:
  • Coutts, H J
• Publication Date: 1981-12

Media Info

• Pagination: 37 p.

Subject/Index Terms

• TRT Terms: Carbon monoxide; Cold starts (Driving); Exhaust gases; Preheating; Vehicle power plants
• Old TRIS Terms: Automobile engines; Cold start
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00376650
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CRREL-SR-81-32 Spec Rpt.
• Files: TRIS
• Created Date: Aug 30 1983 12:00AM