Fuel compositions
AssigneeShell USA, Inc.
InventorsJoseph Michael Russo, Edward Erastus Malisa
Life of this patent
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Abstract
Fuel composition comprising: (i) a base fuel suitable for use in an internal combustion engine; and (ii) a blend of a first monoalkyl alkenyl succinate and a second monoalkyl alkenyl succinate wherein the first monoalkyl alkenyl succinate and the second monoalkyl alkenyl succinate each have the formula (I) or (II) below, or are an isomeric mixture of formula (I) and (II) below: where R is a linear or branched alkenyl group containing from 4 to 30 carbon atoms, and R1 is a linear or branched C1 to C8 alkyl group; and wherein the first monoalkyl alkenyl succinate is different from the second monoalkyl alkenyl succinate. The fuel compositions of the present invention have been found to provide a synergistic reduction in engine wear.
Claims12
Fuel composition comprising:
- (i) a base fuel suitable for use in an internal combustion engine, wherein the base fuel is a gasoline base fuel;
- and
- (ii) a blend of a first monoalkyl alkenyl succinate and a second monoalkyl alkenyl succinate wherein the first monoalkyl alkenyl succinate is a compound of formula (I) or (II) below, or an isomeric mixture of formula (I) and (II) below, wherein R is a linear or branched alkenyl group containing from 4 to 8 carbon atoms, and R1 is a linear or branched C1 to C4 alkyl group and the second monoalkyl alkenyl succinate is a compound of formula (I) or (II) below, or an isomeric mixture of formula (I) and (II) below, wherein R is a linear or branched alkenyl group containing from 10 to 22 carbon atoms, and R1 is a linear or branched C1 to C6 alkyl group;
- and wherein the first monoalkyl alkenyl succinate is different from the second monoalkyl alkenyl succinate.
A method for providing a synergistic reduction in engine wear of an internal combustion engine, comprising fueling the internal combustion engine with a fuel composition comprising:
- (iii) a base fuel suitable for use in an internal combustion engine, wherein the base fuel is a gasoline base fuel;
- and
- (iv) a blend of a first monoalkyl alkenyl succinate and a second monoalkyl alkenyl succinate wherein the first monoalkyl alkenyl succinate is a compound of formula (I) or (II) below, or an isomeric mixture of formula (I) and (II) below, wherein R is a linear or branched alkenyl group containing from 4 to 8 carbon atoms, and R1 is a linear or branched C1 to C4 alkyl group, and the second monoalkyl alkenyl succinate is a compound of each have the formula (I) or (II) below, or an isomeric mixture of formula (I) and (II) below, wherein R is a linear or branched alkenyl group containing from 10 to 22 carbon atoms, and R1 is a linear or branched C1 to C6 alkyl group;
- and wherein the first monoalkyl alkenyl succinate is different from the second monoalkyl alkenyl succinate.
Dependencies are inferred from the claim text.