Lubricant Compositions For Direct Injection Engines
AssigneeThe Lubrizol Corporation
InventorsMatthew D. Gieselman, Brent R. Dohner, Kazuyoshi Miyoshi, Alexander Sammut, Patrick E. Mosier
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Abstract
The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and an oil soluble metal compound, wherein the metal of the oil soluble metal compound may be a group (IV) metal, which may be titanium or zirconium.
Claims21
A method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine comprising supplying to the engine a lubricant composition comprising a base oil of lubricating viscosity and an oil soluble metal compound, wherein the metal of the metal compound is a group (IV) metal.
A method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine comprising supplying to the engine a lubricant composition comprising a base oil of lubricating viscosity and 1 to 1000 parts per million by weight of titanium in the form of an oil-soluble titanium-containing material.
(canceled)
Dependencies are inferred from the claim text.