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Shock valve for clutch

A damping valve and valve seat technology, applied in the fields of clutches and transportation tools, can solve the problems of complex coordination and adaptation, large gap between the reciprocating body and the valve seat, etc.

Inactive Publication Date: 2018-09-14
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mutual adaptation of the two springs is more complex, since it is also necessary to keep in mind that the gap between the reciprocating body and the valve seat must be kept as large as possible during decoupling in order to achieve a rapid decoupling

Method used

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  • Shock valve for clutch
  • Shock valve for clutch
  • Shock valve for clutch

Examples

Experimental program
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Embodiment Construction

[0029] figure 1 A schematic diagram of a hydraulic clutch arrangement is shown, which has a master cylinder 1 and a slave cylinder 2 connected to each other via a hydraulic line 3 in a manner known per se. The master cylinder 1 is connected to a clutch operating device, for example a clutch pedal 4 . The slave cylinder 2 is connected with the clutch actuator 5 . A damping valve 6 is connected to the hydraulic pipeline 3 , and a first port 7 of the damping valve is connected to the master cylinder 1 . The second port 8 of the damping valve 6 is connected with the slave cylinder 2 . When the coupling is decoupled by depressing the clutch pedal 4 , hydraulic fluid flows from the master cylinder 1 to the slave cylinder 2 via the damping valve 6 . On coupling by releasing the clutch pedal 4, the fluid flows in the opposite direction.

[0030] exist figure 2 A longitudinal section through the damping valve 6 according to the first embodiment is shown in . A conical widening i...

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PUM

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Abstract

A shock valve for clutches. The invention relates to a damping valve (6) with two ports (7; 8), which has a first passage and a second passage extending between said ports (7; 8) and can be mounted on a valve seat (7; 8). 13) A reciprocating body (11) moving between the stopper (12), the reciprocating body opens the first passage and closes the second passage when in contact with the valve seat (13), and the reciprocating body is in contact with the valve seat (13); The second passage is opened upon contact with the stopper (12), the damping valve (6) further comprising an intumescent material element (20) which controls the cross-section of the first passage according to the temperature.

Description

technical field [0001] The invention relates to a damping valve, in particular for installation in a hydraulic line of a clutch with a hydraulic operating device. The invention also relates to a clutch and a vehicle. Background technique [0002] In a car with a manual shift transmission, the coupling process can act on drive train components with high torque peaks. This happens especially in the event of faulty operation, such as clutch slipping at high engine speeds. Therefore, various engine / transmission combinations with hydraulic clutch actuation are equipped with damping valves, so-called "Peak Torque Limiters (PTL)". This damper valve is connected in the hydraulic line between the clutch operating device and the clutch actuator. Hydraulic fluid flows unhindered through the damper valve when decoupled. On the other hand, during coupling, ie when the flow directions are reversed, the fluid cross-section narrows, which slows down the possible coupling speed. This sl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D25/12F16K31/64F16K47/00
CPCF15B11/0413F15B21/045F16D25/12F16D2048/0215F16D2048/0221F16L55/055
Inventor R.佩奇托尔德J.霍夫曼
Owner GM GLOBAL TECH OPERATIONS LLC