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Method and device for determining the stroke of a clutch or transmission adjuster

A transmission and clutch technology, which is applied in the field of devices implementing the method, can solve problems such as complex structure and space of sound signals, and achieve the effect of suppressing temperature expansion

Active Publication Date: 2021-11-23
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sound signal generation on the driven side is relatively complex and requires additional installation space in the area of ​​the clutch actuating system

Method used

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  • Method and device for determining the stroke of a clutch or transmission adjuster

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Embodiment Construction

[0021] exist figure 1 An exemplary embodiment of the device according to the invention is shown in , which is used, for example, in a clutch operating system 1 in a motor vehicle. The clutch operating system 1 comprises a driving side 2 and a driven side 3 . The drive side 2 has a clutch actuator 4 comprising a master cylinder 5 . The active piston 6 arranged in the active cylinder 5 is driven by an electric motor 7 , wherein the rotational movement of the electric motor 7 is converted via a screw 8 into a linear movement of the active piston 6 of the active cylinder 5 . The master cylinder 5 is connected to the slave cylinder 11 of the slave side 3 via a hydraulic section 10 filled with hydraulic fluid 9 , the slave cylinder has a slave piston 12 whose volume of hydraulic fluid 9 in the hydraulic section 10 is determined by the master The clutch 14 is operated via the release bearing 13 when the piston 6 is displaced.

[0022] A sound transmitter unit 16 and a sound receiv...

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Abstract

The invention relates to a method for determining the stroke of a clutch in a hydraulic clutch operating system, in which method a hydraulic fluid (9) extending between a drive side (2) and a drive side (3) is acted upon with an acoustic signal to generate wave packets. In a method in which the disengagement stroke of the clutch can be reliably determined with the aid of simple means, an acoustic signal is fed into the hydraulic fluid on the drive side (2) of the clutch operating system (1), wherein the wave packets generated by the acoustic signal are The driven side (3) is reflected back to the master side (2), where the transit times (Δt) of the transmitted and reflected wave packets are evaluated at the master side (2) to determine the clutch travel (D).

Description

technical field [0001] The invention relates to a method for determining the stroke of a clutch in a hydraulic clutch operating system and a device for carrying out the method, in which method a hydraulic fluid extending between a driving side and a driven side is acted upon with an acoustic signal . Background technique [0002] From DE 10 2012 218 255 A1 a method is known for actuating a clutch having a hydrostatic actuator comprising a drive screw which turns so that the piston of the master cylinder Axial movement, wherein the distance traveled by the piston is determined by means of at least one sensor unit. For this purpose, a travel detector is assigned to the piston in order to compare the actual traveled travel with the calculated travel. The travel traveled by the piston can be determined by means of a pressure sensor or a travel sensor arrangement. A disadvantage here is that the engagement travel of the clutch is determined via the actuator travel, which is an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D48/00F16D48/02
CPCF16D25/08F16D48/00F16D48/02F16D48/06F16D2500/1024F16D2500/10412F16D2500/1045F16D2500/3024F16D2500/3026F16D2500/3056F16D2500/30803F16D2500/3166F16D2500/50245F16D2500/5102F16D2500/7041F16D2500/7103F16D2500/7109G01H3/00F16D48/066F16D2500/1026
Inventor 埃哈德·侯德路思拉斐尔·克伦齐格
Owner SCHAEFFLER TECH AG & CO KG
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