초록 ▼

A spark ignition motor fuel composition consisting essentially of: a hydrocarbon component containing one or more hydrocarbons selected from five to eight carbon atoms straight-chained or branched alkanes essentially free of olefins, aromatics, benzene and sulfur, wherein the hydrocarbon component h

A spark ignition motor fuel composition consisting essentially of: a hydrocarbon component containing one or more hydrocarbons selected from five to eight carbon atoms straight-chained or branched alkanes essentially free of olefins, aromatics, benzene and sulfur, wherein the hydrocarbon component has a minimum anti-knock index of 65 as measured by ASTM D-2699 and D-2700 and a maximum DVPE of 15 psi as measured by ASTM D-5191; a fuel grade alcohol; and a co-solvent for the hydrocarbon component and the fuel grade alcohol; wherein the hydrocarbon component, the fuel grade alcohol and the co-solvent are present in amounts selected to provide a motor fuel with a minimum anti-knock index of 87 as measured by ASTM D-2699 and D-2700, and a maximum DVPE of 15 psi as measured by ASTM D-5191. A method for lowering the vapor pressure of a hydrocarbon-alcohol blend by adding a co-solvent for the hydrocarbon and the alcohol to the blend is also disclosed.

대표청구항 ▼

A spark ignition motor fuel composition consisting essentially of: a hydrocarbon component consisting essentially of a mixture of five to seven carbon atom straight-chained or branched alkanes essentially free of olefins, aromatics and sulfur present in an amount between about 10 and about 50 percen

A spark ignition motor fuel composition consisting essentially of: a hydrocarbon component consisting essentially of a mixture of five to seven carbon atom straight-chained or branched alkanes essentially free of olefins, aromatics and sulfur present in an amount between about 10 and about 50 percent by volume of said motor fuel composition, wherein said hydrocarbon component has a minimum anti-knock index of 65 as measured by ASTM D-2699 and D-2700 and a maximum Dry Vapor Pressure Equivalent of 15 psi as measured by ASTM D-5191, and optionally including n-butane in an amount up to about 15 percent by volume of said motor fuel composition; ethanol, present in an amount between about 25 and about 55 percent by volume of said motor fuel composition; and 2-methyltetrahydrofuran, present in an amount between about 15 and about 55 percent by volume of said motor fuel composition. psi as measured by ASTM D-5191 and an anti-knock index of about 89.0 as measured by ASTM D-2699 and D-2700.