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Description of a Motor Vehicle Evaporative Emissions Model-EVAP 2.0
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English
Abstract
A computer model that predicts fleet diurnal and hot-soak evaporative emissions is discussed. The model calculates hourly and daily emissions for a fleet of light-duty gasoline-powered vehicles with real-world driving patterns. The effects of fuel volatility, ambient temperature, fuel weathering, fuel tank level, refueling characteristics, driving pattern, fleet characteristics, calendar year, and fuel tank heating and cooling are quantified. Each relationship is based on data collected in government and industry studies.
Authors
Citation
Kishan, S., DeFries, T., and Klausmeier, R., "Description of a Motor Vehicle Evaporative Emissions Model-EVAP 2.0," SAE Technical Paper 881593, 1988, https://doi.org/10.4271/881593.Also In
References
- “Study of the Refueling Habits of Vehicle Owners.” General Motors Draft Report July 1986
- Draft NIPER Report to MVMA on Gasoline Weathering Study 1987
- EPA test data University of Michigan MTS Data Base December 1986
- Kishan S. DeFries T. H. Kiausmeier R. F. “CRC-Radian Evaporative Emissions Model: EVAP 2.0,” 1987 Annual Report, APRAC VE-4 Project Group Coordinating Research Council Atlanta, Georgia May 24 1988
- Wayne McMahon California Air Resources Board July 1987
- Bush P. S. Amoco Oil Company February 17 1987
- General Motors “Study of Gasoline Volatility and Hydrocarbon Emissions from Motor Vehicles,” General Motors 1986
- 1979 General Motors Automobile Usage data Statistical Analysis System (SAS) computer files
- DeFries T. H. Kishan S. Klusmeier R. F. “Relative Importance of 22 Parameters to Evaporative Emissions-A Sensitivity Analysis of EVAP 2.0,” SAE Fuels and Lubricants Meeting Portland, OR October 10-13, 1988