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Method for adapting a coupling characteristic curve

A characteristic curve and clutch technology, applied to clutches, mechanical equipment, etc., can solve the problems of comfort damage and achieve the effect of improving comfort

Inactive Publication Date: 2013-11-13
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This may lead to compromised comfort in suspicious situations

Method used

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  • Method for adapting a coupling characteristic curve
  • Method for adapting a coupling characteristic curve
  • Method for adapting a coupling characteristic curve

Examples

Experimental program
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Embodiment Construction

[0037] figure 1A graph is shown in which the pressure is plotted against the position of the master cylinder piston. Here it can be seen how the typical characteristic curve changes when the system is warmed up. The characteristic curve K1 on the right corresponds to the characteristic curve at the temperature T1, and the characteristic curve K2 on the left corresponds to the characteristic curve at the temperature T2, wherein T2>T1. Between the two characteristic curves K1 and K2 there is further shown a group of characteristic curves which occur at temperatures lying between T1 and T2 .

[0038] The shifting of the characteristic curve as a function of temperature is a deleterious effect, so for such a system or device, it is possible to provide a compensation, such as pressure compensation or volume compensation, between the pressure chamber and the reservoir, the reservoir at ambient pressure time is beneficial. The pressure chamber is here preferably referred to as th...

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Abstract

The method involves determining a touch point change of the friction clutch in operating phases before pressure- or volume compensation or between two pressure- or volume compensations by a sniffing process. A temperature change of a fluid is determined on the basis of the touch point change, and an adaptation of the characteristic curve (K1,K2) is conducted on the basis of the temperature change. The touch point change is determined relative to the last determined touch point value. An independent claim is included for a device for adjusting a clutch characteristic curve of an automatically actuated friction Clutch.

Description

technical field [0001] The invention relates to a method for adapting a clutch characteristic curve of an automatically actuatable friction clutch. The invention also relates to a related device for adapting the clutch characteristic curve of an automatically actuated friction clutch. Background technique [0002] The friction clutch is actuated partially automatically by means of the actuating device, wherein a closed fluid column is arranged between the master cylinder and the receiver cylinder and serves to transmit the actuating force and / or path. The typical way here is to install an actuator to automatically operate the master cylinder, thereby effecting the movement of the fluid column by changing the position of the master cylinder piston, and thereby displacing the receiving cylinder, thereby actuating the clutch. [0003] It is taken into account here that the fluid column is subjected to a temperature-dependent temperature expansion in the actuating device. The ...

Claims

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Application Information

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IPC IPC(8): F16D48/06
CPCF16D2500/50236F16D2500/70217F16D2500/1026F16D2500/70235F16D2500/30803F16D2500/50245F16D48/06F16D2500/1045F16D2500/10412F16D2500/3064F16D2500/3056
Inventor M·特雷德
Owner SCHAEFFLER TECH AG & CO KG