Method and compositions for reducing wear in engines combusting ethanol-containing fuels

Abstract

The present disclosure provides a method to reduce wear and prevent deposit formation in an internal combustion engine, said method comprising combusting in said engine a fuel composition comprising gasoline, ethanol and at least one fuel additive. There is also provided a composition to improve wear protection in an internal combustion engine combusting an ethanol-containing fuel, said composition comprising gasoline, ethanol, and one or more fuel additive materials.

1 . A method to reduce wear in an internal combustion engine, 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 succinimide dispersants, succinamide dispersants, amides, Mannich base dispersants, and polyetheramine dispersants, whereby the engine wear is reduced relative to the engine wear when combusting a fuel composition without ethanol. 
     
     
         2 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of phenolics, hindered phenolics, aryl amines, and diphenyl amines. 
     
     
         3 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of tall oil fatty acids, monocarboxylic acids, dicarboxylic acids, and polycarboxylic acids. 
     
     
         4 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of oxylated alkylphenolic resins, and formaldehyde polymer with 4-(1,1-dimethylethyl)phenol, methyloxirane and oxirane. 
     
     
         5 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of methyl cyclopentadienyl manganese tricarbonyl, cyclopentadienyl manganese tricarbonyl, azides, peroxides, and alkyl nitrates. 
     
     
         6 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of monoesters, diesters, ethers, diethers, polyethers, and glycols. 
     
     
         7 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of p-phenylenediamine and dicyclohexylamine. 
     
     
         8 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of phenates, salicylates, sulfonates, nonylphenol ethoxylates, fuel-soluble alkali detergents and alkaline earth metal-containing detergents. 
     
     
         9 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of methyloxirane, oxiranes, peroxides, alkyl nitrates, C1—C8 aliphatic hydrocarbons, ketones, butylene oxides, propylene oxides, ethylene oxides, epoxides, butane, pentane, nitrous oxide, nitromethane, xylene, and diethyl ether. 
     
     
         10 . The method of  claim 1 , wherein the fuel composition comprises at least one second fuel additive, said additive being selected from the group consisting of tall oil fat acids, dodecenyl succinic acid, and oleic acid plus N,N dimethylcyclohexylamine. 
     
     
         11 . A composition to improve wear protection 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, p-phenylenediamine, dicyclohexylamine, phenolics, hindered phenolics, aryl amines, diphenyl amines, monocarboxylic acids, dicarboxylic acids, polycarboxylic acids, methyl cyclopentadienyl manganese tricarbonyl, cyclopentadienyl manganese tricarbonyl, azides, peroxides, alkyl nitrates, oxylated alkylphenolic resins, formaldehyde polymer with 4-(1,1-dimethylethyl)phenol, methyloxirane and oxirane, octane enhancer materials, monoesters, diesters, ethers, diethers, methyloxirane, oxiranes, peroxides, alkyl nitrates, C1—C8 aliphatic hydrocarbons, ketones, butylene oxides, propylene oxides, ethylene oxides, epoxides, butane, pentane, nitrous oxide, nitromethane, xylene, diethyl ether, polyethers, glycols, alkali detergents, phenates, salicylates, sulfonates, nonylphenol ethoxylates, and an alkaline earth metal-containing detergents. 
     
     
         12 . A method to reduce wear in an internal combustion engine combusting an ethanol-containing fuel, said method comprising combusting in said engine gasoline, ethanol, and one or more materials selected from the group consisting of succinimide dispersants, succinamide dispersants, amides, Mannich base dispersants, polyetheramine dispersants, p-phenylenediamine, dicyclohexylamine, phenolics, hindered phenolics, aryl amines, diphenyl amines, monocarboxylic acids, dicarboxylic acids, polycarboxylic acids, methyl cyclopentadienyl manganese tricarbonyl, cyclopentadienyl manganese tricarbonyl, azides, peroxides, alkyl nitrates, oxylated alkylphenolic resins, formaldehyde polymer with 4-(1,1 -dimethylethyl)phenol, methyloxirane and oxirane, octane enhancer materials, monoesters, diesters, ethers, diethers, methyloxirane, oxiranes, peroxides, alkyl nitrates, C1—C8 aliphatic hydrocarbons, ketones, butylene oxides, propylene oxides, ethylene oxides, epoxides, butane, pentane, nitrous oxide, nitromethane, xylene, diethyl ether, polyethers, glycols, alkali detergents phenates, salicylates, sulfonates, nonylphenol ethoxylates, and alkaline earth metal-containing detergents. 
     
     
         13 . A method to reduce deposit formation in an internal combustion engine combusting an ethanol-containing fuel, said method comprising combusting in said engine gasoline, ethanol, and one or more materials selected from the group consisting of succinimide dispersants, succinamide dispersants, amides, Mannich base dispersants, polyetheramine dispersants, p-phenylenediamine, dicyclohexylamine, phenolics, hindered phenolics, aryl amines, diphenyl amines, monocarboxylic acids, dicarboxylic acids, polycarboxylic acids, methyl cyclopentadienyl manganese tricarbonyl, cyclopentadienyl manganese tricarbonyl, azides, peroxides, alkyl nitrates, oxylated alkylphenolic resins, formaldehyde polymer with 4-(1,1-dimethylethyl)phenol, methyloxirane and oxirane, octane enhancer materials, monoesters, diesters, ethers, diethers, methyloxirane, oxiranes, peroxides, alkyl nitrates, C1—C8 aliphatic hydrocarbons, ketones, butylene oxides, propylene oxides, ethylene oxides, epoxides, butane, pentane, nitrous oxide, nitromethane, xylene, diethyl ether, polyethers, glycols, phenates, salicylates, sulfonates, nonylphenol ethoxylates, alkali detergents and alkaline earth metal-containing detergents. 
     
     
         14 . The method of  claim 12 , wherein the additive comprises a polyetheramine dispersant. 
     
     
         15 . A method to reduce wear in an internal combustion engine, 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 tall oil fatty acids, dodecenyl succinic acid, and oleic acid plus N,N dimethylcyclohexylamine. 
     
     
         16 . A method of reducing deposits formed in an internal combustion engine combusting an ethanol-gasoline blend, said method comprising combining the blend with at least one additive selected from the group consisting of 2,6-di t-butyl phenol, methylcyclopentadienyl manganese tricarbonyl, oleic acid plus N,N dimethylcyclohexylamine, dodecenyl succinic acid, polyisobutylene amine dispersant, 1,2 propane diamine salicylaldehyde, cresol Mannich base dispersant, diethanol amide of isostearic acid, and 2-ethyl hexyl nitrate, whereby the deposits formed in said engine are less than the deposits formed in the engine when combusting the blend without the at least one additive. 
     
     
         17 . The composition of  claim 11 , wherein the composition further comprises a fuel additive selected from the group consisting of lubricity additives, combustion improvers, detergents, dispersants, cold flow improvers, dehazers, demulsifiers, cetane improvers, antioxidants, scavengers, and pollution suppressants. 
     
     
         18 . A wear reducer fuel additive concentrate for gasoline engines combusting an ethanol-containing fuel, said concentrate comprising one or more wear reducing agents 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. 
     
     
         19 . A deposit reducer fuel additive concentrate for gasoline engines combusting an ethanol-containing fuel, said concentrate comprising one or more deposit reducing agents 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.