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Method of monitoring a friction clutch having at least two mutually engaged clutch plates

A technology of friction clutches and clutch discs, which is applied to clutches, mechanical equipment, etc., and can solve problems such as clutch damage

Active Publication Date: 2021-04-09
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the fault message is mostly ignored by the driver, clutch damage often occurs

Method used

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  • Method of monitoring a friction clutch having at least two mutually engaged clutch plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] 100%-line 1, 80%-line 2 and 40%-line 3. 40% - Line 3 corresponds to the fatigue strength limit of the friction clutch.

[0022] If slipping or slipping of the friction clutch occurs, the value of the unit friction work produced here is firstly gradually added to the first branch line 4 of the cumulative unit friction work curve 5 until the accumulated unit friction work has reached 40%- Line 3. If the value of the specific friction work falls below the 40% line 3 , no further accumulation of the value of the specific friction work takes place, as indicated by the second branch 6 of the cumulative specific friction work curve 5 .

[0023] The value of the specific friction work then exceeds the 40%-line so that the value continues to accumulate, as shown by the third branch 7 of the cumulative specific work of friction curve 5 .

[0024] If the value of the specific friction work then falls below the 40%-line 3 again, no further accumulation of the value of the specifi...

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PUM

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Abstract

The invention relates to a method for monitoring a friction clutch in a drive train of a vehicle, the friction clutch having at least two mutually engaged clutch plates, one of which is torque-driven by a drive motor, characterized in that when the clutch When slipping or slipping, detect the unit friction work actually generated on the friction clutch and accumulate the detected unit friction work value and store it in the memory of the control unit, and when the preset limit of the accumulated friction work value is reached During the first part, the control unit issues a warning. When the second part reaches and / or exceeds the preset limit of the value of the accumulated friction work, the control unit controls the drive motor so that the drive motor is applied to the clutch driven by the drive motor. On-chip torque is reduced.

Description

technical field [0001] The invention relates to a method for monitoring a friction clutch in a drive train of a vehicle, the friction clutch having at least two clutch plates engaging one another, one of the clutch plates being driven with torque by a drive motor. Background technique [0002] In this method, it is known to output a fault message to the driver of the vehicle if the friction clutch is overloaded and the clutch discs of the friction clutch rub or slip against each other. Since this error message is mostly ignored by the driver, clutch damage often occurs. Contents of the invention [0003] The object of the present invention is to provide a method as described at the outset which avoids such clutch damage at least in most cases. [0004] This task is solved according to the invention in that the specific frictional work actually produced on the friction clutch is detected when the clutch is slipping or slipping, and the detected values ​​of the specific fri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D48/06B60W30/186
CPCF16D48/06F16D2500/10412F16D2500/1045F16D2500/30402F16D2500/30406F16D2500/30412F16D2500/3065F16D2500/5102F16D2500/5106F16D2500/70408F16D2500/7044F16D2500/70615F16D2500/7101
Inventor A·施托比克M·施托克鲍尔
Owner ZF FRIEDRICHSHAFEN AG
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