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US 2019/0153348 A1Published application
Method and compositions that provide detergency
AssigneeThe Lubrizol Corporation
InventorsDavid C. Arters, Robert H. Barbour
Life of this patent
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Abstract
The present invention relates to methods of fueling an internal combustion engine, and composition, that provide improved nitrogen-free detergency in the engine, particularly in the area of injector deposit control. The present invention also provides methods of providing both improved detergency and improved corrosion inhibition, while avoiding compatibility problems with fuels and/or while limiting the amount of nitrogen delivered to the fuel from the deposit control additive.
Claims12
A fuel composition comprising:
- (a) a diesel fuel, biodiesel or combinations thereof;
- (b) a nitrogen-free additive comprising hydrolyzed hydrocarbyl substituted succinic anhydrides;
- and
- (c) from 0.1 to 10 ppm zinc.
1 more element
Dependencies are inferred from the claim text.