Molybdenum-titanium lubricating oil composition and application thereof

Abstract

The invention discloses a molybdenum-titanium lubricating oil composition, which is prepared from the following components in percentage by weight: 80 to 90 percent of base oil, 0.008 to 0.02 percentof organic molybdenum compound, 0.001 to 0.05 percent of oil-soluble titanium compound, 5 to 14 percent of complexing agent, 4 to 6 percent of viscosity index improver, 0.1 to 0.2 percent of pour point reducer, and 0.05 to 0.008 percent of anti-foaming agent. The molybdenum-titanium lubricating oil composition does not contain zinc dialkyl dithiophosphate. The invention also comprises applicationof the molybdenum-titanium lubricating oil composition in reducing metal piece wear in an internal combustion engine. The molybdenum-titanium lubricating oil composition provided by the invention doesnot contain the zinc dialkyl dithiophosphate (ZDDP) at all, so that wear resistance and oxidation resistance of lubricating oil can be effectively improved, wear reducing and oxygen resistance area realized, and meanwhile, a phosphorous content and a sulphur content keep at a relatively low-level range and meet a national waste gas emission standard.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and particularly relates to a lubricating oil composition containing molybdenum and titanium and its application. Background technique [0002] The lubricating oil used to lubricate internal combustion engines usually uses mineral oil or synthetic oil as the base oil, but the base oil alone does not have the necessary properties to reduce friction, wear protection and inhibit sludge, so it is necessary to add friction reducer, antiwear agent, antioxidant Additives such as additives and base oils are formulated into lubricating oil compositions. However, while some additives improve one characteristic of the lubricating oil, they can adversely affect other characteristics. Therefore, it is necessary to understand all the effects of various additives and balance their content in the lubricating oil. of. [0003] At present, zinc dialkyldithiophosphate (ZDDP) is a kind of lubricating oil a...

AI Technical Summary

Problems solved by technology

However, the problem with the use of zinc dialkyldithiophosphate (ZDDP) is that phosphorus and sulfur derivatives are harmful to the three-way catalytic converter on gasoline engines, poisoning the three-way catalyst and affecting the oxygen sensor

Therefore, the use of engine oils containing phosphorus and sulfur additives can greatly reduce the life and effectiveness of catalytic converters

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