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.


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    Title :

    Vapor Pressure Characteristics of M85 Methanol Fuels


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1991



    Publication date :

    1991-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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