Clutch oil pressure control system for hydrodynamic transmission

A hydraulic transmission, clutch oil technology, applied in clutches, fluid pressure actuation system components, fluid pressure actuation devices, etc., can solve the problems of high maintenance cost, difficult neutral braking, easy damage, etc., to increase space Gear braking function, reducing power interruption time, reducing the effect of assembly space

Inactive Publication Date: 2019-04-09
贵州凯星液力传动机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system includes components such as valve body and spool assembly, controller, shifter, and wiring harness. There are many components and they are easily damaged. The fit clearance and processing accuracy of the body, etc., have high requirements for software, machining accuracy and oil cleanliness, high maintenance costs, and only software can be used for gear shift protection, not suitable for high-power hydraulic transmissions that only require manual power. control and durability
Due to the characteristics of the internal transmission mechanism of the hydraulic transmission, there is a large torque in the neutral gear, and it is difficult to achieve neutral braking with a small brake on the output shaft

Method used

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  • Clutch oil pressure control system for hydrodynamic transmission
  • Clutch oil pressure control system for hydrodynamic transmission
  • Clutch oil pressure control system for hydrodynamic transmission

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Embodiment Construction

[0013] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0014] A clutch oil pressure control system of a hydraulic transmission, including the oil pressure channel PI of the working system; the oil pressure channel PI of the working system passes through the electromagnetic pressure regulating valve 1 and is respectively connected with the shift slide valve F17, the shift slide valve E16, the shift Spool valve D15, shift spool valve C14, shift spool valve B13, and top connections of brake control valve 12, the shift spool valve F17, shift spool valve E16, shift spool valve D15, shift spool valve C14 , the shift spool valve B13, and the top of the brake control valve 12 are respectively connected with the solenoid valve F23, the solenoid valve E22, the solenoid valve D21, the solenoid valve C20, and the solenoid valves B19 and 18. The working ports of valve E16, shift spool valve D15, sh...

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PUM

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Abstract

The invention provides a clutch oil pressure control system for a hydrodynamic transmission. The clutch oil pressure control system for the hydrodynamic transmission comprises a working system oil pressure channel PI. According to the clutch oil pressure control system for the hydrodynamic transmission, process control is carried out on a clutch oil pressure by virtue of a plurality of electromagnetic valves, reversing slide valves and buffer valves, and a neutral-position brake function is added; and the oil pressure control system carries out gearshift protection and neutral-position brake through the on-off of the electromagnetic valves, and is few in interference factors, and a power interruption time during gearshift is reduced as much as possible, so that the overall assembly space is reduced.

Description

technical field [0001] The invention relates to a clutch oil pressure control system of a hydraulic transmission. Background technique [0002] The multi-plate wet clutch oil pressure control system of hydraulic transmission is the key technology of hydraulic transmission shift control, which is related to the shift quality and life of hydraulic transmission. At present, the clutch oil pressure control of various hydraulic transmissions mostly adopts the pilot proportional or high-speed switch solenoid valve to provide pilot control oil pressure, and provides control signals to the solenoid valve under the control of the software of the electronic control unit to control the pilot oil pressure. Then use this pilot oil pressure to control the reversing spool valve to provide oil pressure for the clutch to realize the clutch engagement or release process. Using the electronic control system to control the clutch oil pressure, different software can be selected for different e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/02F15B21/08F15B11/16
CPCF15B11/16F15B21/087F16D48/02F16D2048/0266F16D2048/0281F16D2048/0284
Inventor 张芳
Owner 贵州凯星液力传动机械有限公司
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