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US 8,632,638 B2Granted
Method for cleaning deposits from an engine fuel delivery system
AssigneeChevron Oronite Company LLC
InventorsFelicia Simpson-Green, Damon Vaudrin
Life of this patent
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Abstract
Disclosed is a method for cleaning deposits from one or more parts of an engine fuel delivery system, the method comprising introducing into the engine fuel delivery system a cleaning composition comprising (a) one or more aromatic hydrocarbon solvents; and (b) one or more propylene glycol ethers.
Claims18
A method for cleaning fuel injector deposits from one or more parts of an engine fuel delivery system, the method comprising introducing into the engine fuel delivery system a cleaning composition comprising (a) one of more aromatic hydrocarbon solvents;
- (b) one or more propylene glycol ethers:
- and (c) one or more nitrogen-containing detergents, to clean the fuel injector deposits from the one or more parts of the engine fuel delivery system, wherein the engine fuel delivery system is present in a compression ignition (diesel) engine, and wherein the one or more propylene glycol ethers are represented by the formula:
- wherein R is hydrogen or a substituted or unsubstituted C1 to C30 hydrocarbyl group, R1 is a substituted or unsubstituted C1 to C30 hydrocarbyl group and n is an integer from 1 to 4.
Dependencies are inferred from the claim text.