Diesel fuel additive providing clean up detergency of fuel injectors
AssigneeTexaco Inc.
InventorSheldon Herbstman
Life of this patent
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Abstract
A diesel fuel composition comprising a major portion of a middle distillate fuel oil and a minor portion, effective to clean deposits from diesel fuel injectors, of a diesel fuel detergent comprising the reaction product of: (a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and (b) an alkylphenoxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals. A method of cleaning diesel fuel injectors is also provided.
Claims28
A diesel fuel composition comprising a major portion of a middle distillate fuel oil and a minor portion, effective to clean deposits from diesel fuel injectors, of a diesel fuel detergent comprising the reaction product of:
- (a) a 4-alkyl-2-morpholinone represented by the formula:
- ##STR11## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and
- (b) an alkylphenoxypolyoxyalkylene amine represented by the formula:
- ##STR12## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 4 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals.
A diesel fuel composition comprising a major portion of a middle distillate fuel oil and between 75 PTB and 100 PTB of a diesel fuel detergent comprising the reaction product of:
- (a) a 4-alkyl-2-morpholinone represented by the formula:
- ##STR14## in which R represents a methyl radical;
- (b) an alkylphenoxypolyoxyalkylene amine represented by the formula:
- ##STR15## in which R' represents a hydrocarbyl radical having from 8 to 20 carbon atoms, x has a value from 6 to 20, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals.
A method for cleaning deposits from diesel engine fuel injectors comprising operating the diesel engine using a fuel composition comprising a major portion of a middle distillate fuel oil and a minor portion, sufficient to provide fuel injector clean up detergency, of an additive comprising the reaction product of:
- (a) a 4-alkyl-2-morpholinone represented by the formula:
- ##STR16## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and
- (b) an alkylphenoxypolyoxyalkylene amine represented by the formula:
- ##STR17## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 4 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals.
Dependencies are inferred from the claim text.