A kind of power shift transmission oil composition

Abstract

The invention relates to a power shift transmission oil composition. The power shift transmission oil composition comprises, by weight, 0.1 to 0.2% of alkyl diphenylamine, 0.2 to 0 .3% of a liquid phenolic antioxidant, 9.0 to 10.0% of a multi-functional composite additive, 0.5 to 1.0% of a pour point depressant, 0.1 to 0.2% of a friction modifier and 0 to 0.04% of an anti-foaming agent, with the balance being base oil with kinematic viscosity of 10.0 to 11.5 mm<2> / s. The power shift transmission oil composition provided by the invention has a very high viscosity index, excellent anti-oxidationperformance and high friction plate service life; compared with common power shift transmission oil, the power shift transmission oil composition allows the service life of a friction plate to be prolonged by more than one time; and the power shift transmission oil composition is reasonable in combination of raw materials, uses easily available raw materials, and has a wide application scope.

Description

Technical field [0001] The invention belongs to the chemical industry, and relates to a power shift gearbox oil composition, in particular to a composition used for the transmission lubrication of the power shift gearbox of engineering machinery. Background technique [0002] The power shift gearbox of construction machinery can meet the requirements of frequent start and stop, acceleration and deceleration of the equipment, and can automatically increase the torque at low speeds to improve the vehicle's starting performance, running speed and comfort. At the same time, the power shift gearbox can freely transform the torque during the vehicle's starting phase and high-speed driving phase, which can make full use of the engine output power. [0003] Due to the characteristics of heavy-duty off-highway equipment and heavy-duty mechanical power shift gearboxes, the current domestic hydraulic transmission oil products lack evaluation of the durability of friction linings, and there ar...

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Problems solved by technology

[0003] Due to the characteristics of heavy-duty off-highway equipment and heavy-duty mechanical power shift gearboxes, the current domestic hydraulic transmission oil products lack the evaluation of the durability of friction plates, and there is no additive for improving the friction coefficient in the oil formula. When the friction performance is required on construction machinery equipment, the friction plate will slip prematurely, which will significantly reduce the service life of the friction plate

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