Patent ID: 7323020
Filing Date: 2008-01-29
Classification: C10L

Abstract:
1. A method of making a fuel composition for a modified internal combustion spark ignition engine comprising combining: (b) a fuel grade ethanol comprising 0.5% to 99% of a total volume of the fuel composition; (c) an oxygen-containing component comprising at least one of (1) an alkanol having from 3 to 10 carbon atoms; (2) a ketone having from 4 to 9 carbon atoms; (3) a dialkyl ether having from 6 to 10 carbon atoms; (4) an alkyl ester of an alkanoic acid, said alkyl ester having 5 to 8 carbon atoms; (5) a hydroxyketone having 4 to 6 carbon atoms; (6) a keto ester of an alkanoic acid, said keto ester having 5 to 8 carbon atoms or (7) an oxygen-containing heterocyclic compound having 5 to 8 carbon atoms selected from the group consisting of tetrahydrofurfuryl alcohol, tetrahydrofurfuryl acetate, dimethyltetrahydrofuran, tetramethyltetrahydrofuran, methyl tetrahydropyran, 4-methyl-4-oxytetrahydropyran, and mixtures thereof, and said oxygen-containing additive comprises 0.5% to 99% of the total volume of the fuel composition; and (d) at least one C so that a ratio between components (b)/{(c)+(d)} is from 1:200 up to 200:1 by volume, wherein the fuel composition is a modified internal combustion spark ignition engine fuel.