Method and compositions for reducing corrosion in engines combusting ethanol-containing fuels
OwnerLawrence J Cunningham, Richard J. DuMont +4inventors
InventorsLawrence J Cunningham, Richard J. DuMont, William J. Colucci, Alexander M. kulinowski, Joseph W. Roos, Ronald K. Fricke
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Abstract
The present disclosure provides compositions and methods for improving corrosion inhibition in engines combusting a fuel containing ethanol. In particular, E85 fuels are provided containing additives able to reduce, eliminate and/or prevent corrosion of engine combustion surfaces and surfaces of engine components exposed to the fuel containing ethanol.
Claims18
A method to reduce corrosion in an internal combustion engine having fuel injectors, said method comprising combusting in said engine a fuel composition comprising gasoline, ethanol and at least one fuel additive, said additive being selected from the group consisting of succinimide dispersants, succinamide dispersants, amides, Mannich base dispersants, and polyetheramine dispersants, whereby corrosion is reduced relative to the corrosion when combusting a fuelL composition without ethanol.
A composition to reduce corrosion in an internal combustion engine combusting an ethanol-containing fuel, said composition comprising gasoline, ethanol, and one or more materials selected from the group consisting of succinimide dispersants, succinamide dispersants, amides, Mannich base dispersants. polyetheramine dispersants, phenolics, hindered phenolics, aryl amines, diphenyl amines, monocarboxylic acids, dicarboxylic acids, polycarboxylic acids, p-phenylenediamine and dicyclohexylainine, oxylated alkylphenolic resins, formaldehyde polymer with 4-(1,1-dimethylethyl)phenol, methyloxirane and oxirane, methyl cyclopentadienyl manganese tricarbonyl, cyclopentadienyl manganese tricarbonyl, azides, tetraethyl lead, peroxides, alkyl nitrates, monoesters, diesters, ethers, ketones, diethers, polyethers, glycols, glymes, oxiranes, C1—C8 aliphatic hydrocarbons, butylene oxide, propylene oxide, ethylene oxide, epoxides, butane, pentane, xylene, nitrous oxide, nitromethane, phenates, salicylates, sulfonates, nonylphenol ethoxylates, fuel-soluble alkali detergents and alkaline earth metal-containing detergents.
A method to reduce corrosion of copper and/or silver in an engine having copper or silver components and combusting an ethanol-containing fuel by adding to the ethanol or to the fuel at least one additive selected from succinimide dispersants, succinamide dispersants, amides, Mannich base dispersants, polyetheramine dispersants, phenolics, hindered phenolics, aryl amines, diphenyl amines, monocarboxylic acids, dicarboxylic acids, polycarboxylic acids, p-phenylenediamine and dicyclohexylamine, oxylated alkylphenolic resins, formaldehyde polymer with 4-(1,1-dimethylethyl)phenol, methyloxirane and oxirane, octane enhancer materials, monoesters, diesters, ketones, ethers, diethers, polyethers, glycols, glymes, oxiranes, C1—C8 aliphatic hydrocarbons, butylene oxide, propylene oxide, ethylene oxide, epoxides, butane, pentane, xylene, nitrous oxide, nitromethane, phenates, salicylates, sulfonates, nonylphenol ethoxylates, fuel-soluble alkali detergents and alkaline earth metal-containing detergents, whereby the copper and/or silver component(s) have/has reduced corrosion relative to the corrosion observed when the copper and/or silver component(s) are/is exposed to a fuel without ethanol.
A corrosion inhibitor fuel additive concentrate for gasoline engines combusting an ethanol-containing fuel, said concentrate comprising one or more corrosion inhibitors and a diluent selected from the group consisting of an oil, a fuel, gasoline, ethanol, solvent, carrier fluid, and other liquid materials combustible in a gasoline engine.
A composition to reduce corrosion in an internal combustion engine combusting an ethanol-containing fuel, said composition comprising gasoline, ethanol, and one or more materials selected from the group consisting of 2,5-dimercapto-1,3,4-thiadiazole, dodecenyl succinic acid, oleic acid, a condensation product of alpha halogenated mono-carboxylic acid with 2,5-dimercapto-1,3,4-thiadiazole, and the reaction product of oleic acid and 2,5-dimercapto-1,3,4-thiadiazole.
A composition to reduce corrosion in an internal combustion engine combusting an ethanol-containing fuel, said composition comprising gasoline, ethanol, and one or more materials selected from the group consisting of tall oil fatty acids, dodecenyl succinic acid, and oleic acid plus N,N dimethylcyclohexylamine.
Dependencies are inferred from the claim text.