A hydraulic control system for an automatic transmission
A technology of hydraulic control system and automatic transmission, applied in transmission control, fluid pressure actuation system components, transmission parts, etc., can solve the problems of high oil circuit correlation and high failure rate, and achieve the effect of simplifying the structure
Active Publication Date: 2021-11-12
浙江轩孚科技有限公司 +1
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Problems solved by technology
[0004] The above-mentioned device can achieve smooth parking operation by means of hydraulic control, but the parking mechanism in this device uses the oil pressure of the two clutch pistons to achieve rapid engagement, and the oil circuit has a high degree of correlation, resulting in a higher failure rate
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[0024] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0025] Such as figure 1As shown, the automatic transmission hydraulic control system includes an oil pump 1, a main oil pressure regulating valve 2 and a main oil pressure control solenoid valve 3. The oil pump 1 and the main oil pressure regulating valve 2 are connected through a working oil circuit 4, and the main oil pressure control solenoid valve The valve 3 is connected with the working oil circuit 4, and the hydraulic control system also includes five independent clutch pistons 5, and each clutch piston 5 includes a piston control valve 6, a piston control solenoid valve 7 and a piston energy storage for controlling the clutch state 8 and electromagnetic valve accumulator 24, five piston control valves 6 are directl...
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The invention provides a hydraulic control system of an automatic transmission, which belongs to the technical field of automobile transmissions. It solves the technical problem that the hydraulic control system of the existing automatic transmission is prone to failure. The hydraulic control system of the automatic transmission includes an oil pump, a main oil pressure regulating valve and a main oil pressure control solenoid valve. The oil pump is connected with the main oil pressure regulating valve through a working oil circuit. The hydraulic control system also includes several clutch pistons, each of which includes a piston control valve, a piston control solenoid valve, and a piston accumulator for controlling the clutch state, and several of the piston control valves They are all directly communicated with the working oil circuit at the same time, and each of the piston accumulators is only directly communicated with the piston control valve in the corresponding clutch piston. The invention greatly simplifies the structure and cost of the transmission hydraulic system and reduces the failure rate.
Description
technical field [0001] The invention belongs to the technical field of automobile transmission, and relates to a hydraulic control system of an automatic transmission. Background technique [0002] With the popularity of cars equipped with automatic transmissions, there is a great market demand for automatic transmissions. As an important part of automatic transmission, the hydraulic control system of automatic transmission plays a vital role. The hydraulic control system has a broad application market in the automatic transmission. [0003] For example, the patent application publication number CN103097779A discloses a hydraulic control device with a parking lock operating system for an automatic transmission of an automobile. The parking lock piston can be moved in the first actuating direction by feeding the working fluid into the first parking lock pressure chamber via the parking lock slide valve. When the parking lock piston moves in a second operating direction opp...
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IPC IPC(8): F16H61/40F16H57/04F16H61/02F15B21/041
CPCF15B21/041F16H57/0413F16H57/0434F16H61/0206F16H61/40
Inventor 任广福龚丽萍余瑾
Owner 浙江轩孚科技有限公司