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A hydraulic control system for an automatic transmission

A technology of hydraulic control system and automatic transmission, applied in the direction of transmission control, toothed components, belt/chain/gear, etc., can solve the problem of complex structure of control system, low control efficiency, pressure control valve, switch valve and safety Problems such as complex valve connection

Active Publication Date: 2020-10-30
浙江轩孚科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above automatic transmission hydraulic control system uses solenoid valves to control other valves to realize the hydraulic supply to the actuator. However, the problem of this control system is that the connection mode of the pressure control valve, switch valve and safety valve is complicated, which leads to the structure of the entire control system. Complex, low control efficiency

Method used

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  • A hydraulic control system for an automatic transmission
  • A hydraulic control system for an automatic transmission
  • A hydraulic control system for an automatic transmission

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The automatic transmission hydraulic control system includes oil pump 1, manual shift valve 2, clutch oil port 1 C1, clutch oil port 2 C2, clutch oil port 3 C3, brake oil port 1 B1, brake oil port 2 B2, control valve and solenoid valve.

[0031] Specifically, as figure 1As shown, the oil pump 1 supplies oil to the manual shift valve 2 through the main oil circuit 3 and communicates with the oil inlet of the manual shift valve 2 , and supplies oil to each solenoid valve through the control oil circuit 5 . In this embodiment, the main oil pressure regulating valve 17 is arranged on the main oil pressure regulating valve 3, and the main oil pressure regulating valve 17 can release the pressure on the main oil pressure regulating valve 3. , the main oil circuit 3 maintains the lowest working oil pressure. The main oil pressure regulating valve 17 controls and adjusts the oil pressure of the main oil circuit 3 through the main oil pressure control solenoid valve 18 to meet...

Embodiment 2

[0053] The technical solution in this embodiment is basically the same as the technical solution in Embodiment 1, the difference is that, as Figure 9 As shown, in this embodiment, the R range limp control valve 14 and the D range limp control valve 15 are not provided, and correspondingly there is no D range limp mode and R range limp mode.

Embodiment 3

[0055] The technical solution in this embodiment is basically the same as the technical solution in Embodiment 1, the difference is that this embodiment adopts the design of integrated valve, all control valves, R gear control, main oil pressure regulating valve 17, solution The lock-up pressure regulating valve 19, the pressure regulating valve 23 of the solenoid valve oil supply circuit, the R-range limp control valve, and the D-range limp control valve 15 can all adopt a multi-way valve structure with multiple spools, which realizes the integration and integration of the hydraulic control system. miniaturization.

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Abstract

The invention provides a hydraulic control system of an automatic transmission, and belongs to the technical field of cars. The problems that an existing hydraulic control system is complex in structure and low in control efficiency are solved. The hydraulic control system of the automatic transmission comprises an oil pump, a manual shift valve, an R gear control valve, four control valves and electromagnetic valves with the number equal to that of the control valves. The oil pump supplies oil to the manual shift valve through a main oil path, through a control oil path, oil is supplied to each electromagnetic valve, the manual shift valve is provided with a D gear oil outlet and an R gear oil outlet, the D gear oil outlet communicates with an oil inlet of each control valve, oil is supplied to a first clutch oil port, a second clutch oil port, a third clutch oil port and a first brake oil port through one control valve, the electromagnetic valves control the corresponding control valves, the R gear oil outlet communicates an oil inlet of the R gear control valve and can supply oil to the first clutch oil port, the R gear control valve is controlled by one electromagnetic valve, and the R gear oil outlet can supply oil to a second brake oil port. The system is simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to a hydraulic control system of an automatic transmission. Background technique [0002] An automatic transmission is a transmission that can automatically change gear ratios while the vehicle is in motion, so that the driver does not have to change gears manually. The AT is composed of a hydraulic torque converter, a planetary gear mechanism, a shift actuator and a shift control system, etc., and achieves variable speed and torque through hydraulic transmission and gear combination. Among them, the shift actuator is mainly used to change the active element in the planetary gear or limit the movement of a certain element, change the direction and speed ratio of power transmission, and the actuator of the shift actuator is mainly clutch and brake. The function of the clutch is to transmit power to a certain component of the planetary gear mechanism to make it a driving part, the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/02F16H61/12
CPCF16H61/0211F16H61/0265F16H61/12F16H2061/1232
Inventor 任广福龚丽萍余瑾
Owner 浙江轩孚科技有限公司