A kind of lubricating oil composition for pure electric vehicle gearbox

Abstract

The invention relates to a lubricating oil composition used for a gearbox of a full electric vehicle. The lubricating oil composition comprises the following components in mass percent: a) 0.5-25% of at least one viscosity index improver; b) 0.05-10% of at least one extreme-pressure anti-wear reagent; c) 0.5-5% of at least one antioxidant; d) the balance of basic oil. The composition provided by the invention can meet lubrication requirements of a gear and a bearing in the gearbox of the full electric vehicle; obtained lubricating oil has good low-temperature performance, extreme-pressure anti-wearing property, anti-oxidization performance, and antirust and antiseptic performances, excellent comprehensive performance, simple components and a simple and convenient production process.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to a lubricating oil composition used for a gearbox of a pure electric vehicle. Background technique [0002] In the situation of vigorously promoting energy saving and low carbon, new energy vehicles have become the development trend of the global automobile industry. In my country, new energy vehicles have become one of the seven strategic emerging industries in the 12th Five-Year Plan. In recent years, electric vehicles have been recognized by the world as the main direction of transformation and development of the automobile industry in the 21st century. With the increasing shortage of oil resources, rising oil prices and increasing pressure on the ecological environment, it will be the general trend for new energy to gradually replace and eventually replace traditional energy, and new energy technology will surely become the core technology for human survival in the future. [...

AI Technical Summary

Problems solved by technology

The input speed of the gearbox is usually around 4000-5000r / min. Compared with the gearbox on the traditional diesel engine bus, the input speed is more than doubled. At the same time, the gearbox is small in size and the output torque is large. These characteristics lead to the traditional The high-quality gear oil used in this gearbox, the temperature rise of the gear oil is too high, resulting in premature oxidation, and serious wear of the rear gear, which cannot work normally

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