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Method for determining temperature-dependent performance of a friction clutch

A friction clutch, dual clutch technology, applied in the application of friction clutches, clutches, thermometers, etc., can solve problems such as difficulties

Inactive Publication Date: 2021-01-26
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, a clutch temperature sensor can be provided, which is difficult to implement due to the rotating components of the friction clutch

Method used

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  • Method for determining temperature-dependent performance of a friction clutch
  • Method for determining temperature-dependent performance of a friction clutch
  • Method for determining temperature-dependent performance of a friction clutch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 The block diagram of Figure 10 shows the flow of the proposed method. In step 1, the clutch temperature is determined. The clutch temperature can be measured by means of one or more possibly present temperature sensors or can be modeled from it. Alternatively, the clutch temperature can be estimated by means of a temperature model without the aid of a clutch temperature sensor. For this purpose, other operating parameters can be processed, such as the friction torque introduced into the friction clutch, the thermal capacity of the friction clutch, the current coefficient of friction, the temperature around the clutch housing in which the friction clutch is received, etc. Clutch slip is as determined from input and output speeds and applied torque.

[0024] The determination of the modulus of elasticity of at least one disk of the friction clutch, for example the pressure disk or the counter pressure disk, is carried out in step 2, the friction performance o...

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PUM

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Abstract

The invention relates to a method for determining the temperature-dependent behavior of a friction clutch having at least two disks carrying friction surfaces in the form of at least one counter pressure disk and at least one pressure disk, wherein The temperature model estimates the clutch temperature at least by means of energy input into the friction clutch. In order to further improve the temperature dependence of the function of the friction clutch, the temperature-dependent friction power is determined from the temperature estimated from the temperature model and from the properties of the geometry of the at least two disks.

Description

technical field [0001] The invention relates to a method for determining the temperature-dependent behavior of a friction clutch having at least two disks carrying friction surfaces in the form of at least one counter pressure disk and at least one pressure disk, wherein The temperature model estimates the clutch temperature at least by means of energy input into the friction clutch. Background technique [0002] Friction clutches are sufficiently known as single or double clutches in the drive train of a motor vehicle, which friction clutches are arranged, for example, between the crankshaft of the internal combustion engine and the transmission input shaft of the transmission or the transmission input shaft of a dual clutch transmission. In this case, the controllable torque is transmitted via the friction clutch by means of a friction fit between the counter pressure plate and the axially displaceable pressure plate on the one hand and the friction linings of the clutch o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D13/58F16D13/64G01K13/00G01M13/022
CPCF16D13/58F16D13/64G01K13/00G01M13/022F16D48/06F16D2300/18F16D2500/1045F16D2500/3023F16D2500/30404F16D2500/30405F16D2500/5106F16D2500/7043F16D2500/708F16D2500/7082
Inventor 皮埃尔·拉莫特
Owner SCHAEFFLER TECH AG & CO KG
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