LUBRICATING OIL COMPOSITIONS

摘要

A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand comprising an anion of a carboxylic acid; (c) one or more dispersants; and (d) one or more detergents, wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.

主权项

1. A lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity; (b) about 1600 ppm to about 3000 ppm as Ti metal of one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand comprising an anion of a carboxylic acid; (c) about 0.5 wt. % to about 8 wt. %. based on the total weight of the lubricating oil composition, of one or more dispersants; and (d) about 0.2 wt. % to about 8 wt. %. based on the total weight of the lubricating oil composition, of at least two metal-containing detergents including a first metal-containing detergent concentrate which is an overbased alkaline earth metal sulfonate or phenate detergent concentrate or mixture thereof having a BN of about 100 to about 450 and a second metal-containing detergent concentrate which is an overbased alkaline earth metal sulfonate or phenate detergent concentrate or mixture thereof having a BN of about 10 to about 50, wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate, has a sulfated ash content of no more than about 1.0 wt. % as determined by ASTM D874 and is substantially free of any phosphorus content.