Gearbox lubricating oil composition containing ionic liquid and application thereof

By combining base oil, additives, and ionic liquids in a specific ratio, the antagonistic problem of friction modifiers in existing lubricants is solved, resulting in improved transmission durability and reduced vibration, especially in dual-clutch transmissions.

CN121991744APending Publication Date: 2026-05-08CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-11-06
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing transmission lubricant friction modifiers tend to exhibit antagonistic effects when coexisting with other components, affecting the extreme pressure and corrosion resistance of the lubricant, and failing to simultaneously protect the durability of metal components such as gears and bearings, as well as clutch friction plates.

Method used

It uses a combination of base oil, automatic transmission fluid-specific compound additives, viscosity index improvers, ionic liquids and antifoaming agents in a specific ratio. In particular, by using ionic liquids as friction improvers, a protective film is formed to balance the synergistic effect of each component, protect metal parts and reduce the probability of vibration.

Benefits of technology

It significantly reduces the probability of vibration during transmission operation, improves the durability of the transmission, protects metal components such as gears and bearings, and provides effective protection for clutch friction plates.

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Abstract

The invention relates to the technical field of traditional gearbox lubricating oil, in particular to a gearbox lubricating oil composition containing ionic liquid and application of the gearbox lubricating oil composition. The gearbox lubricating oil composition comprises the following components: 65%-90% of base oil, 1%-20% of a special composite additive for automatic gearbox oil, 0.1%-10% of a viscosity index improver, 1%-10% of ionic liquid and 0.0001%-1% of an anti-foaming agent. According to the gearbox lubricating oil composition containing the ionic liquid, on the premise of protecting lubrication of parts such as gears and bearings, effective protection can be provided for clutch friction plate parts at the same time, the probability of shaking in the running process of a gearbox can be remarkably reduced, and the durability of the gearbox is improved.
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