Compositions for mitigating low speed pre-ignition events
AssigneesChevron Oronite Company LLC, Chevron U.S.A. Inc.
InventorsJiun-Le Shih, Chung-Hao Kuo, Charles Paul Loeper
Life of this patent
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Abstract
Fuel composition for preventing or reducing low speed pre-ignition events in a spark-ignited internal combustion engine is provided. The fuel composition includes a hydrocarbon fuel boiling the gasoline or diesel range and a primary additive having a structure given by or a salt thereof. A is a ring moiety; R1 and R2 are independently H, C1-C20 hydrocarbyl group, carboxyl group, ether, or hydroxyl group. R3 and R4 are independently H, C1-C20 hydrocarbyl group, carboxyl group, ether, amino, or hydroxyl group or wherein R3 and R4 are part of a cyclic group. R5 is C1-C100 hydrocarbyl group, carboxyl group, ether, or hydroxyl group; and p is 0 to 2, n is 1 to 3, m is 1 to 3, and p+n+m is less than 5.
Claims8
A method for preventing or reducing low speed pre-ignition events in a spark-ignited internal combustion engine, the method comprising:
- supplying to the engine a fuel composition comprising:
- a hydrocarbon fuel boiling in gasoline or diesel range;
- and
- a primary additive having a structure given by
- or a salt thereof;
- wherein A is a ring moiety;
- wherein R1 and R2 are independently H, C1-C20 hydrocarbyl group, carboxyl group, ether, or hydroxyl group;
- wherein R3 and R4 are independently H, C1-C20 hydrocarbyl group, carboxyl group, ether, amino, or hydroxyl group or wherein R3 and R4 are part of a cyclic group;
- R5 is C1-C100 hydrocarbyl group, carboxyl group, ether, or hydroxyl group;
- and
- wherein p is 0 to 2, n is 1 to 3, m is 1 to 3, and p+n+m is less than 5.
Dependencies are inferred from the claim text.