Method for preventing or reducing low speed pre-ignition in direct injected spark-ignited engines with silane-containing lubricant
AssigneesChevron Oronite Company LLC, Chevron U.S.A. Inc.
InventorJohn Robert Miller
Life of this patent
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Abstract
Disclosed is a lubricating engine oil composition for use in down-sized boosted engines comprising a lubricating oil base stock as a major component, and at least one silane-containing compound. Also disclosed is a method for preventing or reducing low speed pre-ignition in a direct injected, boosted, spark ignited internal combustion engine, and the use of at least one silane-containing compound in a lubricating engine oil composition for preventing or reducing low speed pre-ignition in a direct injected, boosted, spark ignited internal combustion engine.
Claims14
A method for preventing or reducing low speed pre-ignition in a direct injected, boosted, spark ignited internal combustion engine, said method comprising the step of lubricating the crankcase of the engine with a lubricating oil composition comprising from about 100 to about 3000 ppm of silicon from at least one silane-containing compound, based on the total weight of the lubricating oil composition.
Use of at least one silane-containing compound in a lubricating engine oil composition for preventing or reducing low speed pre-ignition in a direct injected, boosted, spark ignited internal combustion engine.
A lubricating engine oil composition for use in a down-sized boosted engine comprising a lubricating oil base stock as a major component;
- and at least one silane-containing compound, as a minor component;
- wherein the downsized engine ranges from 0.5 liters to 3.6 liters.
Dependencies are inferred from the claim text.