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Fuel Economy and Cold-Start Drivability with Some Recent-Model Cars
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Sector:
Event:
Fleet Week
Language:
English
Abstract
Fuel economy and drivability have deteriorated as a result of engine changes made to reduce exhaust emissions in recent-model cars. To study this problem, chassis dynamometer tests were run with 1970 and 1972 cars using both cold-start and hot-start procedures. Fuel economy and drivability were evaluated during the first 2 miles and the last 3 miles of a 50°F cold-start driving cycle similar to the Coordinating Research Council road test. Fuel economy was also evaluated under warmed-up conditions at 72°F using the last half of the cold-start cycle. The effects of car year model, gasoline volatility, gasoline heat content, and car warmup are discussed in this paper.
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Authors
Citation
Ingamells, J., "Fuel Economy and Cold-Start Drivability with Some Recent-Model Cars," SAE Technical Paper 740522, 1974, https://doi.org/10.4271/740522.Also In
References
- Everett R.L. “Measuring Vehicle Drivability.” Paper 710137 SAE Automotive Engineering Congress Detroit January 1971
- Clewell D.H. Koehl W.J. “Impact of Automotive Emissions Regulations on Gasoline Demand.” “Energy and the Automobile,” New York Society of Automotive Engineers, Inc. 1973 paper 730515
- Stebar R.F. Everett R.L. “New Emphasis on Fuel Volatility-Effects of Vehicle Warmup with Quick Release Chokes.” SAE Transactions 81 1972 paper 720934
- Bond W.D. “Quick-Heat Intake Manifolds for Reducing Cold Engine Exhaust Emissions.” Paper 720935 SAE National Fuels and Lubricants Meeting Tulsa November 1972
- Coordinating Research Council “Drivability Evaluation in Cool Weather.” 1970
- “Motor Gasolines, Summer 1973.” Petroleum Products Survey No.83 Bureau of Mines January 1974
- Huebner, G.J. Jr. Gasser D.J. “Energy and the Automobile-General Factors Affecting Vehicle Fuel Consumption.” “Energy and the Automobile.” New York Society of Automotive Engineers, Inc. 1973 paper 730518