Automatic transmission hydraulic control system

Abstract

The invention relates to a hydraulic control system, in particular to an automatic transmission hydraulic control system. In order to solve the problems that an existing hydraulic control system is complex, and the response time is long, the invention provides an automatic transmission hydraulic control system, and the automatic transmission hydraulic control system is used for realizing accuratecontrol of each gear of the vehicle. The automatic transmission hydraulic control system comprises an oil tank, an oil supply circuit, a main pressure oil path, a gear shifting control system, a cooling lubricating oil path, a torque converter and a retarder oil path, wherein the oil supply circuit is used for supplying oil to other devices so as to control working of all the devices, the gear shifting control system is used for controlling clutches and brakes, the cooling lubricating oil path is used for cooling the clutches and the brakes, and the torque converter and the retarder oil path are used for providing control oil liquid to the retarder and the torque converter. According to the automatic transmission hydraulic control system, the two clutches and the four brakes can be controlled, so that nine forward gears and one reverse gear are realized, the structure is compact, and the control gear is simple and rapid.

Description

technical field [0001] The invention relates to a hydraulic control system, in particular to a hydraulic control system of an automatic transmission. Background technique [0002] The hydraulic automatic transmission is light and simple to operate, has good adaptability, can greatly reduce labor intensity, and can also reduce the impact on the entire vehicle transmission system. Its control part is mainly realized through the hydraulic system. Among them, the control of the main oil pressure of the system is related to the efficiency of the transmission; the control of the shift actuator is closely related to the comfort and safety of the vehicle. The existing hydraulic control system includes some interlock valves or valve groups with the same functional effect. Through the mutual linkage and cooperation between each valve or valve group, the clutch and brake are controlled to realize the change of gear or limp home, but this This kind of hydraulic control system is relati...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hydraulic control system for an automatic transmission in order to solve the technical problem that the existing hydraulic control system is relatively complicated and has a long response time, which is used to realize accurate control of each gear of the vehicle

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