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Method for adapting a touch point of a friction clutch

A technology of friction clutches and clutches, applied to clutches, mechanical equipment, etc., which can solve the problems of inability to monitor the pressure of the clutch system, driving loss, inability to use the clutch, etc.

Active Publication Date: 2018-07-27
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this area, it is not possible to monitor the pressure situation of the clutch system, so that no contact points can be derived in this area
For this reason, the pressure in the clutch system is usually compensated by means of a detection process (Schnüffelvorgang), which in turn can lead to loss of driving because the clutch cannot be used for a certain period of time

Method used

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  • Method for adapting a touch point of a friction clutch
  • Method for adapting a touch point of a friction clutch
  • Method for adapting a touch point of a friction clutch

Examples

Experimental program
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Embodiment Construction

[0027] exist figure 1 The structure of a hydrostatic clutch operating system 1 with a hydrostatic clutch actuator 3 as used in a vehicle is schematically shown in . A hydrostatic clutch operating system 1 includes a controller 2 for controlling a hydrostatic clutch actuator 3 . When the position of the clutch actuator 3 changes, the piston 4 of the master cylinder 5 moves to the right along the actuator stroke, wherein the volume in the master cylinder 5 is changed and a pressure p is generated in the master cylinder 5 . The pressure p is transmitted via the hydraulic fluid 6 serving as pressure medium via the hydraulic line 7 to the secondary cylinder 8 , which directly operates the friction clutch 9 . The friction clutch 9 is called a directly operated clutch, since the operation takes place without an interposed lever spring. In this case, the pressure p of the hydraulic fluid 6 induces a stroke change in the secondary cylinder 8 which acts on the actuation of the frictio...

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Abstract

The invention relates to a method for adapting a touch point of a friction clutch which is in an automated clutch actuation system (1) driven by a hydrostatic actuator (3); touch points are adapted from a pressure-distance-feature curve by means of the pressure (p), from which a clamping force-distance relation correlated with a transmitted clutch torque (T) is determined. In a method in which a starting operation can be carried out smoothly, a reliably detectable reference pressure signal ( D) is generated in an area (B) comprising the gap of the friction clutch (9) before a clamping area (C)of the friction clutch (9); after the detection of the reference pressure signal (D), a contact is adapted in the area (B) comprising the gap of the friction clutch (9) under a condition in which theclutch torque (T) is not monitored.

Description

technical field [0001] The invention relates to a method for adapting the contact points of a friction clutch driven by a hydrostatic actuator in an automated clutch system, wherein the pressure-stroke-characteristic curve is obtained by means of a pressure adaptation contact point, thereby determining the clamping force-travel relationship as a function of the transmitted clutch torque. Background technique [0002] In automated clutch systems with hydrostatic actuators, besides the estimated clutch torque, the pressure in the hydraulic system as a direct measured value is an important source of information that can significantly increase the torque accuracy. For directly actuated clutches, the pressure or estimated clamping pressure or clamping force characteristic curves are used in order to determine the clutch torque directly from the coefficient of friction. Directly actuated clutches are clutches in which a pre-engaged lever sensor for changing the transmission ratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/02
CPCF16D48/02F16D2048/0257F16D2500/1026F16D2500/50257F16D2500/10412F16D2500/70217F16D2500/70205F16D2500/3027F16D48/08F16D2500/50236F16D2500/70235F16D2500/70408F16D2500/70406F16D2500/1045
Inventor 乔治·格佩特
Owner SCHAEFFLER TECH AG & CO KG
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