This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Vapor Pressure Characteristics of M85 Methanol Fuels
Annotation ability available
Sector:
Language:
English
Abstract
This study was undertaken to determine the vapor pressure characteristics of M85 fuel, a mixture of 85 percent methanol and 15 percent gasoline or other hydrocarbons. For M85 fuels made with full-boiling-range gasolines, the vapor pressure of the M85 fuel at 37.8°C increased linearly with an increase in the vapor pressure of the gasoline. A different linear relationship was obtained for M85 fuels made with pure hydrocarbons rather than with gasolines. The vapor pressure of an M85 fuel was higher when the hydrocarbon component was a pure hydrocarbon or simple hydrocarbon mixture rather than a gasoline of the same vapor pressure.
Vapor pressure vs. temperature characteristics were measured for a number of M85 fuels and the hydrocarbons from which they were made. In most cases, a change in temperature caused a greater change in the vapor pressure of the M85 fuel than in the vapor pressure of the hydrocarbon component of the M85.
Authors
Topic
Citation
Furey, R. and Perry, K., "Vapor Pressure Characteristics of M85 Methanol Fuels," SAE Technical Paper 912415, 1991, https://doi.org/10.4271/912415.Also In
References
- Furey R. L. “Volatility Characteristics of Gasoline-Alcohol and Gasoline-Ether Fuel Blends,” SAE paper 852116 October 1985
- Naman T. M. Allsup J. R. “Exhaust and Evaporative Emissions from Alcohol and Ether Fuel Blends,” SAE paper 800858 June 1980
- Dasch C. J. Brinkman N. D. Hopper D. H. “Cold Starts Using M-85 (85% Methanol): Coping with Low Fuel Volatility and Spark Plug Wetting,” SAE paper 910865 February 1991
- Bardon M. F. Rao V. K. Clark W. Battista V. “Gasoline and Light Isocrackate as Primers for High Methanol Blends,” paper 90-ICE-24 Technology Conference and Exhibition New Orleans, LA January 14 18 1990
- Bardon M. F. Nicks G. W. Rao V. K. Vaivads R. “A Vapour Pressure Model for Methanol/Gasoline M85 Blends,” SAE paper 870366 February 1987
- Bardon M. F. Rao V. K. Battista V. “Volatility and Flammability of Methanol/Gasoline Blends,” SAE paper 892062 September 1989
- “Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method),” 1990 Annual Book of ASTM Standards 05 01
- “Standard Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method),” 1990 Annual Book of ASTM Standards 05 03
- “Standard Test Method for Vapor Pressure of Petroleum Products (Micromethod).” 1989
- “Emergency Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method),” ASTM headquarters
- “Standard Specification for Automotive Spark-Ignition Engine Fuel,” 1990 Annual Book of ASTM Standards 05 03
- “Volatility Regulations for Gasoline and Alcohol Blends Sold in Calendar Years 1989 and Beyond,” Federal Register 54 54 11868 11911 March 22 1989
- “MVMA National Gasoline Survey,” Motor Vehicle Manufacturers Assoc. of the U.S. Inc. Detroit, Ml
- Federal Register 53 170 33846 33847 September 1 1988
- Furey R. L. Nagel B. E. “Composition of Vapor Emitted From a Vehicle Gasoline Tank During Refueling,” SAE paper 860086 February 1986
- Bardon M. F. Rao V. K. Vaivads R. Evans M. J. B. “Measured and Predicted Effect of the Extent of Evaporation on Gasoline Vapour Pressure.” J. Inst. Energy 59 216 1986
- Barrow G. M. Physical Chemistry McGraw-Hill New York 1961 394
- Furey R. L. Perry K. L. “Volatility Characteristics of Blends of Gasoline with Ethyl tertiary-Butyl Ether (ETBE),” SAE paper 901114 May 1990
- Lowi, A. Jr. Carter W. P. L. “A Method for Evaluating the Atmospheric Ozone Impact of Actual Vehicle Emissions,” SAE paper 900710 February 1990