Automatic transmission fluid based on coal-derived base oil and method for its production

By combining coal-based oil with additives, a low-cost automatic transmission fluid was prepared, solving the problems of cost and overall performance, achieving excellent lubrication and anti-corrosion effects, and improving the working efficiency of the transmission.

CN122146381APending Publication Date: 2026-06-05CHINA ENERGY GRP NINGXIA COAL IND CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ENERGY GRP NINGXIA COAL IND CO LTD
Filing Date
2026-02-02
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing transmission fluid products struggle to balance cost and overall performance, particularly in terms of oxidation resistance, viscosity, and anti-wear properties, which negatively impact transmission efficiency and shifting smoothness.

Method used

Automatic transmission oil is prepared by combining coal-based base oil with solubilizers, detergents, dispersants, rust and corrosion inhibitors, antioxidants, and defoamers through a heating, stirring, and cooling settling process, thereby optimizing lubrication performance and corrosion resistance.

Benefits of technology

It provides a low-cost automatic transmission fluid with excellent lubrication, high temperature resistance, oxidation resistance, detergency and dispersancy, and corrosion resistance, extending oil change intervals and improving the working efficiency and energy efficiency of automatic transmissions.

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Abstract

The present application relates to the technical field of lubricating oil, and discloses an automatic gearbox oil based on coal-made base oil and a preparation method thereof, the automatic gearbox oil based on coal-made base oil comprises the following components: coal-made base oil 70-90 parts, a solubilizing agent 2-15 parts, a cleaning dispersant 0.5-5 parts, an anti-rust and anti-corrosion agent 0.5-3 parts, an antioxidant 0.2-2 parts and a defoaming agent 0.001-0.01 part. The automatic gearbox oil based on coal-made base oil provided by the present application has excellent lubricating performance, can meet the working condition requirements of the automatic gearbox oil, improves the working energy efficiency of the automatic gearbox, prolongs the oil change cycle, and has a relatively low raw material cost.
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