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Mathematical Expressions Relating Evaporative Emissions from Motor Vehicles without Evaporative Loss-Control Devices to Gasoline Volatility
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Sector:
Event:
National West Coast Meeting
Language:
English
Abstract
A program was undertaken to study the effects of fuel volatility characteristics on evaporative emissions from motor vehicles without evaporative loss-control devices. The ultimate objective of this study was to derive a simple mathematical expression relating evaporative emissions from an urban car population to gasoline volatility parameters. Since development of the necessary data base for such a program through direct experimentation would have been quite inefficient, an alternate approach was taken in deriving a set of mathematical models to calculate evaporative emissions from carburetors and fuel tanks of motor vehicles. These models were verified by comparison with limited experimental data.
Information available on daily urban area vehicle use and data on how fuel system temperatures vary with vehicle, vehicle use, and ambient temperature were then used to develop a general model that would calculate daily evaporative emissions from a vehicle population, given the ambient temperature conditions and fuel volatility parameters. Linear regression analyses on these calculated data resulted in a simple mathematical expression for predicting the daily average evaporative emission from motor vehicles. Such an expression is of interest in studying the effects of changes in gasoline volatility characteristics on evaporative emissions from uncontrolled motor vehicles.
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Citation
Biller, W., Manoff, M., Sachdev, J., Zegel, W. et al., "Mathematical Expressions Relating Evaporative Emissions from Motor Vehicles without Evaporative Loss-Control Devices to Gasoline Volatility," SAE Technical Paper 720700, 1972, https://doi.org/10.4271/720700.Also In
References
- Eccleston B. H. Noble B. F. Hurn R. W. “Influence of Volatile Fuel Components on Vehicle Emissions.” Bureau of Mines Rept. RI 7291 February 1970
- “A Survey of Average Driving Patterns in Los Angeles Urban Areas.” Kearin D. H. Lamoureaux R. L. Systems Development Corp. February 1969
- “A Survey of Average Driving Patterns in the Chicago Urban Areas.” Lamoureaux R. L. Hirschinger K. Kearin D. H. Baueroft B. Systems Development Corp. November 26 1969
- “A Survey of Average Driving Patterns in the Houston Urban Area.” Lamoureaux R. L. Hirschinger K. Kearin D. H. Systems Development Corp. August 29 1969
- report to National Center for Air Pollution Control and CRC under a jointly supported program “A Survey of Average Driving Patterns in the New York Urban Area.” Kearin D. H. Lamoureaux R.L. Systems Development Corp. August 15 1970
- Scott Research Laboratories, Inc. “Time-Temperature Histories of Specified Fuel System.” Project 2602, APRAC Committee No. CAPE-5-68, CRC New York October 15 1969
- Faix L. J. “Reduction and Containment of Gasoline Vehicle Evaporative Emissions.” Oral presentation at SAE Detroit Section Meeting Spring 1969
- Wade D. T. “Factors Influencing Vehicle Evaporative Emissions.” SAE Transactions 76 paper 670126
- Bonamassa F. Maga J. et al. “Joint Project to Evaluate Potential of Gasoline Modification as an Air Pollution Control Measure in Los Angeles County.” February 1969
- Scott Research Laboratories, Inc. “Mathematical Expressions Relating Evaporative Emissions from Motor Vehicles to Gasoline Volatility.” Project 1135, Task Force EF-3 API Washington April 1970
- Scott Research Laboratories, Inc. “Mathematical Expressions Relating Evaporative Emissions from Motor Vehicles to Gasoline Volatility.” II Project 1182, Task Force EF-3 API Washington February 1971