Transmission liquid for independent hydraulically controlled clutch system

Abstract

The invention relates to a transmission liquid for an independent hydraulic clutch system, which can effectively solves the problems of independent usage of the transmission liquid, resource conservation and cost reduction to meet the actual requirement for transmission liquid of automobiles. The transmission liquid with a total amount of 100% comprises, by weight percentage, diethylene glycol residual liquid 53 to 60%, ethylene glycol residual liquid 38 to 45%, diethanolamine 0.8 to 1.00%, triethanolamine 0.5 to 0.8%, benzotriazole 0.06 to 0.09%, sodium nitrite 0.3 to 0.7% and silicone oil 0.05 to 0.08%. The preparation method comprises the following steps: adding diethylene glycol residual liquid and ethylene glycol residual liquid sequentially into a reaction kettle, stirring and heating, adding diethanolamine, reacting for 40 to 50 min, sequentially adding triethanolamine, benzotriazole, sodium nitrite and silicone oil, cooling to 10 to 40 DEG C, stirring for 20 to 40 min, standing for 1 h, and filtering to obtain the final product. The method has the advantages of simple process, low cost, high utilization value, no pollution discharge and no residues in the production process, and environmental protection, and the transmission liquid for the independent hydraulic clutch system is a great innovation.

Description

1. Technical field [0001] The invention relates to a transmission fluid, in particular to a transmission fluid for an independent hydraulic clutch system. 2. Background technology [0002] At present, the transmission fluid used in domestic independent hydraulic clutch systems is replaced by automobile brake fluid. There are three types of automobile brake fluid: ① castor oil-alcohol type: it is prepared with refined castor oil and ethanol at a ratio of 1:1. In cold regions, the brake fluid formulated with 34% castor oil, 13% glycerol (glycerol), and 53% ethanol can still guarantee normal braking at around -35°C, but the boiling point is low, which is prone to air resistance; ② Synthetic type: It is made of ether, alcohol, ester, etc. mixed with additives such as lubrication, anti-oxidation, anti-rust, anti-rubber swelling, etc. It has good performance and the working temperature can be as high as 150 ° C, but the price is higher; ③ Mineral oil type: It is made of refined l...

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Problems solved by technology

In cold regions, the brake fluid formulated with 34% castor oil, 13% glycerol (glycerin), and 53% ethanol can still guarantee normal braking at around -35°C, but the boiling point is low, which is prone to air resistance; ② Synthetic type: It is made of ether, alcohol, ester, etc. mixed with additives such as lubrication, anti-oxidation, anti-rust, anti-rubber swelling, etc. It has good performance and the working temperature can be as high as 150 ° C, but the price is higher; ③ Mineral oil type: It is made of refined light diesel oil distillate with thickener and other additives. The working temperature range is -70°C to 150°C. It has good performance, but the braking system must be equipped with rubber parts that are resistant to mineral oil. China's mine Oil-type brake fluid is divided into "No. 7" and "No. 9". "No. 7" is used in severe cold areas, and "No. 9" is used in areas where the temperature is not lower than -25°C. Various brake fluids cannot be mixed. Store and mix, otherwise there will be stratification and lose its effect. Therefore, the existing transmission fluid can not meet the actual needs of automobiles in different situations. Can a new transmission fluid be developed?

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