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AssigneeChevron U.S.A. Inc.
InventorsFred E. Barnes, Gregory Hemighaus, William R. Scott
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An aviation gasoline (Avgas) fuel composition possessing a high motor octane number and which contains reduced amounts of tetraethyl lead is disclosed. The Avgas composition preferably comprises about 20 to about 80 vol % iso-octane, about 5 to about 18 vol % toluene, about 1 to about 20 vol % C4 to C5 paraffins, about 0 to about 1 ml/gallon tetraethyl lead (TEL) and the balance light alkylate. The Avgas composition may be economically produced utilizing spare methyl tertiary butyl ether plant capacity to produce iso-octane as one component of the composition.
An aviation gasoline composition possessing a high motor octane number and containing reduced amounts of tetraethyl lead comprising about 20 to about 80 vol % iso-octane, about 5 to about 18 vol % toluene, about 1 to about 20 vol % C4 to C5 paraffins, about 0 to about 1 ml tetraethyl lead/gallon of said aviation gasoline composition and the balance comprising light alkylate.
A method of preparing an aviation gasoline composition possessing a high motor octane number and containing reduced amounts of tetraethyl lead comprising blending about 20 to about 80 vol % iso-octane, about 5 to about 18 vol % toluene, about 1 to about 20 vol % C4 to C5 paraffins, about 0 to about 1 ml tetraethyl lead/gallon of said aviation gasoline composition and the balance comprising light alkylate.
A method of preparing a reduced lead content aviation gasoline composition while maintaining a high motor octane number comprising,
Dependencies are inferred from the claim text.