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Damper valve used for clutch

A shock-absorbing valve and valve seat technology, which is applied in the field of clutches and transportation vehicles, can solve the problems of large gap between reciprocating body and valve seat, and complicated mutual coordination and adaptation.

Inactive Publication Date: 2015-03-18
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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  • Damper valve used for clutch
  • Damper valve used for clutch
  • Damper valve used for clutch

Examples

Experimental program
Comparison scheme
Effect test

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 damper valve used for a clutch. The invention relates to a damper valve (6) having two joints (7, 8). The damper valve includes a first passage and a second passage that extend between the joints (7, 8), and includes a reciprocating body (11) that can move between a valve stand (13) and a stopper (12). When the reciprocating body (11) contacts the valve stand (13), the first passage is opened and the second passage is closed. When the reciprocating body contacts the stopper (12), the second passage is opened. The damper valve (6) further comprises an expansion material element (20) controlling the cross section of the first passage according to 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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IPC IPC(8): F16D25/12F16K31/64F16K47/00
CPCF16K47/00F16L55/055F16D25/12F15B11/0413F15B21/045F16D2048/0215F16D2048/0221
Inventor R.佩奇托尔德J.霍夫曼
Owner GM GLOBAL TECH OPERATIONS LLC