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EMISSIONS AT OFF-AMBIENT TEMPERATURES
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English
Abstract
Data on exhaust emissions were obtained from a group of 1970 model-year vehicles operating over a range of ambient temperatures. The work is providing a baseline against which current-production vehicles can be compared, thus enabling a more complete assessment of automotive emissions reduction achievements.
The vehicle fleet represented the 1970 model-year nationwide mix. The 25 cars were tested at 25°, 50°, 75°, and 100° F over the Environmental Protection Agency urban Federal test procedure, highway fuel economy test, and New York City driving cycles.
Both temperature and driving cycle were found to have significant effects on exhaust emissions. The conditions which yielded the greatest adverse effects on emissions were: 1) low temperature--urban driving cycle, and 2) high temperature--New York City driving cycle. The data also indicate that the use of air conditioners causes increased emission levels.
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Authors
Citation
Marshall, W. and Eccleston, B., "EMISSIONS AT OFF-AMBIENT TEMPERATURES," SAE Technical Paper 800512, 1980, https://doi.org/10.4271/800512.Also In
References
- McMichael W. F. Sigsby, J. E. Jr. “Automotive Emissions After Hot and Cold Starts in Summer and Winter.” Presented in Annual Meeting of Air Pollution Control Association San Francisco, California June 1966
- General Motors Engineering Staff “Winter Weather Exhaust Emissions for Cars with Proposed 1975 Exhaust Emission Controls.” June 1971
- Officials of Environmental Protection Service, Government of Canada December 1972
- Environmental Protection Agency “Aldehyde and Reactive Organic Emissions from Motor Vehicles.” Ann Arbor, Michigan March 1973
- Ashby, H. A. Stahman, R. C. Eccleston, B. H. Hurn, R. W. “Vehicle Emissions--Summer to Winter.” Paper No. 741053 presented at the SAE Automobile Engineering Meeting, Toronto, Canada October 21–25 1974
- Edwards, J. B. et al “The 1970 Passenger Car High Altitude Emission Baseline.” Paper No. 790959 presented at the SAE Fuels & Lubricants Meeting, Houston, Texas October 2–4 1979