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Vehicle Emissions-Summer to Winter
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English
Abstract
A test program was conducted to study the effect of ambient conditions on exhaust emissions from a wide variety of automobiles. Twenty-six cars ranging from pre-control production cars to catalyst-equipped prototypes, including rotary, Diesel, and stratified charge cars, were tested at 20°, 50°, 75°, and 110° F.
Ambient temperatures above and below 75° F were found to have significant effects on exhaust emissions. The Diesel and stratified charge cars were affected less than production and catalyst-equipped cars by changes in ambient temperature.
The use of air conditioners at the 110° F test temperature led to increased emissions and fuel consumption. Hydrocarbon reactivity and aldehyde emissions were not affected by temperature and were lower from the catalyst cars at all temperatures.
Authors
Citation
Ashby, H., Stahman, R., Eccleston, B., and Hurn, R., "Vehicle Emissions-Summer to Winter," SAE Technical Paper 741053, 1974, https://doi.org/10.4271/741053.Also In
References
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