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Method for heating viscoelastic components of an actuator and clutch actuator

An actuator, viscoelastic technology, applied in the direction of clutches, fluid-driven clutches, non-mechanical drive clutches, etc.

Active Publication Date: 2019-12-31
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, radial shifts or changes in the angular position of the piston are particularly challenging for the sealing function of the seal at low temperatures when operating hydrostatic actuators.

Method used

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  • Method for heating viscoelastic components of an actuator and clutch actuator
  • Method for heating viscoelastic components of an actuator and clutch actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The same features are provided with the same reference signs.

[0018] figure 1 The principle structure of a hydrostatic clutch system 1 for a motor vehicle is shown. The schematic diagram only shows the structure of one of the two clutches used to operate the dual clutch transmission, and the operation of the other clutch is similarly performed. The hydrostatic clutch system 1 includes a control device 3 on the active side 2, which controls an actuator 4. The actuator 4 is connected to the piston 6 of the master cylinder 7 via the transmission device 5. When the actuator 4 and then the piston 6 in the active cylinder 7 shift to the right along the actuator path, the volume of the active cylinder 7 changes, thereby building a pressure p in the active cylinder 7, which pressure passes through the hydraulic fluid 8 The pipeline 9 is transmitted to the driven side 10 of the hydrostatic clutch system 1. The length and shape of the hydraulic line 9 are adapted to the install...

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PUM

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Abstract

The invention relates to a method for locally heating viscoelastic components of a hydrostatic actuator of a vehicle, in particular a hydrostatic clutch actuator, wherein the hydrostatic actuator (13) comprises a cylinder (7), A piston (6) is arranged axially displaceable in the cylinder, which is moved by an electric motor (14) via a transmission (5) and thus in the hydraulic path of the hydrostatic actuator (13) Hydraulic fluid (8), the hydraulic path is sealed from the environment by means of viscoelastic components (19, 20, 21). In a method of ensuring the behavior of a hydrostatic actuator over a wide temperature range, at least one viscoelastic is heated by energizing the electronics (22) at low external temperatures and with the vehicle's ignition switched off components (19, 20, 21).

Description

Technical field [0001] The present invention relates to a method for locally heating the viscoelastic components of a hydrostatic actuator of a vehicle, in particular a hydrostatic clutch actuator, wherein the hydrostatic actuator includes a cylinder in which a shaft A piston is arranged in a movable manner. The piston is moved by an electric motor via a transmission device, thereby moving hydraulic fluid in the hydraulic path of the hydrostatic actuator, which is sealed with respect to the surrounding environment by means of viscoelastic components. Background technique [0002] In a motor vehicle, a hydrostatic clutch actuator is used for operating the vehicle clutch, which clutch actuator is known from DE 10 2010 047 800 A1 and 10 2010 047 801 A1. This hydrostatic actuator includes an active cylinder, which includes a housing and a piston that can be axially displaced in the housing and pressurizes the pressure chamber, a transmission device that converts rotational motion int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D25/08F16D48/02B60K23/00
CPCF16D25/08F16D29/005F16D48/02F16D2025/081F16D2048/0212F16D2300/08
Inventor 马尔科·特雷德马丁·齐默尔曼于尔根·格哈特迪迪埃·扎赫尔菲利普·科默雷尔
Owner SCHAEFFLER TECH AG & CO KG
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