Gasoline fuel composition for improved performance in fuel injected engines
AssigneeAfton Chemical Corporation
InventorsXinggao Fang, Scott D. Schwab
Life of this patent
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Abstract
A fuel soluble additive for a gasoline engine, a method for improving performance of fuel injectors and a method for cleaning fuel injectors for a gasoline engine. The fuel soluble additive includes a quaternary ammonium salt derived from an amido amine containing at least one tertiary amino group and an epoxide, in the presence of a proton donor selected from a carboxylic acid and an alkyl phenol. The amido amine is made in a reaction medium that is substantially devoid of an acylating agent.
Claims19
A gasoline fuel composition comprising from about 1 to about 100 ppm of a fuel soluble additive for a fuel injected gasoline engine based on a total weight of the fuel composition, the fuel soluble additive comprising a quaternary ammonium salt derived from an amido amine containing at least one tertiary amino group and an epoxide, in the presence of a proton donor, wherein the amido amine is made in a reaction medium that is substantially devoid of an acylating agent.
A method of improving the injector performance of a fuel injected gasoline engine comprising operating the engine on a fuel composition comprising a major amount of gasoline fuel and from about 5 to about 100 ppm by weight based on a total weight of the fuel composition of a quaternary ammonium salt derived from an amido amine containing at least one tertiary amino group and an epoxide, in the presence of a proton donor selected from the group consisting of a carboxylic acid and an alkyl phenol, wherein the amido amine is made in a reaction medium that is substantially devoid of an acylating agent.
A method of operating a fuel injected gasoline engine comprising combusting in the engine a fuel composition comprising a major amount of fuel and from about 5 to about 100 ppm by weight based on a total weight of the fuel composition of a quaternary ammonium salt derived from an amido amine containing at least one tertiary amino group and an epoxide, in the presence of a proton donor selected from the group consisting of a carboxylic acid and an alkyl phenol, wherein the amido amine is made in a reaction medium that is substantially devoid of an acylating agent.
Dependencies are inferred from the claim text.