摘要 |
A lubricant composition is described, particularly for engine oils, comprising a base oil of viscosity from 3 to 26 cSt (mm<2>/s) at 100 DEG C and an antiwear additive combination comprising (a) an oil soluble or oil dispersible phosphorus-free organo-molybdenum compound, (b) an ashless, sulphur-containing organo-phosphorus compound and optionally (c) a zinc thiophosphate compound selected from one or more of zinc dialkyldithiophosphate, zinc diaryldithiophosphate, zinc alkylaryldithiophosphate and zinc arylalkyldithiophosphate. The molybdenum compound may be a carbamate, e.g. molybdenum dithiocarbamate (MoDTC) but is preferably nitrogen-free, e.g. a carboxylate. |
申请人 |
EXXON RESEARCH AND ENGINEERING COMPANY;HOLT, DAVID, GARY, LAWTON;VERNON, PATRICK, DESMOND, FRASER;ATHERTON, JOHN, IAN |
发明人 |
HOLT, DAVID, GARY, LAWTON;VERNON, PATRICK, DESMOND, FRASER;ATHERTON, JOHN, IAN |