ADDITIVES AND LUBRICANT FORMULATIONS FOR IMPROVED ANTIWEAR PROPERTIES
First Claim
1. A lubricated surface comprising a lubricant composition containing a base oil of lubricating viscosity, a hydrocarbon soluble titanium compound, a metal-free friction modifier, and an amount of at least one hydrocarbon soluble magnesium compound effective to provide a reduction in surface wear greater than a reduction surface wear for a lubricant composition devoid of the titanium compound, metal-free friction modifier, and magnesium compound, wherein the lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compounds.
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Abstract
A lubricated surface, a method for reducing wear between moving parts, and lubricants, and lubricant additive concentrates containing a wear reducing agent. The lubricated surface contains a base oil of lubricating viscosity, a hydrocarbon soluble titanium compound, a metal-free friction modifier and an amount of at least one hydrocarbon soluble magnesium compound effective to provide a reduction in surface wear greater than a reduction surface wear for a lubricant composition devoid of the titanium compound, metal-free friction modifier, and magnesium compound. The lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compound.
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Citations
43 Claims
- 1. A lubricated surface comprising a lubricant composition containing a base oil of lubricating viscosity, a hydrocarbon soluble titanium compound, a metal-free friction modifier, and an amount of at least one hydrocarbon soluble magnesium compound effective to provide a reduction in surface wear greater than a reduction surface wear for a lubricant composition devoid of the titanium compound, metal-free friction modifier, and magnesium compound, wherein the lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compounds.
- 17. A vehicle having moving parts and containing a lubricant for lubricating the moving parts, the lubricant comprising an oil of lubricating viscosity and an amount of antiwear agent providing a combination of a hydrocarbon soluble titanium compound, a metal-free friction modifier, and at least one hydrocarbon soluble magnesium compound effective to provide a reduction in surface wear of the moving parts greater than a reduction surface wear of the moving parts for a lubricant composition devoid of the titanium compound, metal-free friction modifier, and magnesium compound, wherein the lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compounds.
- 25. A fully formulated lubricant composition comprising a base oil component of lubricating viscosity and an amount of antiwear agent provided by a combination of a hydrocarbon soluble titanium-containing compound, a metal-free friction modifier, and at least one hydrocarbon soluble magnesium compound effective to provide wear reduction greater than an amount of wear reduction for a lubricant composition devoid of the combination of titanium, metal-free friction modifier, and magnesium compounds, wherein the lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compounds.
- 33. A lubricant additive concentrate for providing improved antiwear properties to a lubricant composition, the concentrate begin devoid of calcium and molybdenum and comprising a hydrocarbyl carrier fluid and a synergistic amount of a combination of a hydrocarbon soluble titanium compound, glycerol monooleate, and a hydrocarbon soluble magnesium compound sufficient to provide from about 10 to about 500 ppm titanium and from about 120 to about 2000 ppm magnesium to a lubricant composition containing the concentrate.
- 38. A method of lubricating moving parts with a lubricating oil exhibiting increased antiwear properties, the method comprising using as the lubricating oil for one or more moving parts a lubricant composition containing a base oil and an antiwear additive combination substantially devoid of calcium, the antiwear additive combination comprising a hydrocarbyl carrier fluid, a hydrocarbon soluble titanium compound, a metal-free friction modifier, and a hydrocarbon soluble magnesium compound sufficient to provide from about 10 to about 500 ppm titanium and from about 120 to about 2000 parts per million magnesium in the lubricating oil.
Specification