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Method and apparatus for monitoring thermal load of vehicle clutch

A clutch and thermal load technology, applied in clutch, transmission control, components with teeth, etc., can solve problems such as increased control cost, increased sensor power, suboptimal temperature model, etc., to avoid defects and avoid thermal shocks Effect

Inactive Publication Date: 2008-09-24
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the methods or devices known in the prior art are not yet optimally constituted
On the one hand, currently known methods and devices require increased control costs or increased and very sensitive sensor power, for example using thermal elements
On the other hand, the temperature models used here are not yet optimal, since generally only the actual temperature at a certain point in time in the surroundings of the clutch can be calculated or determined and based on this, the correspondingly relevant processes can be traced back.
Therefore, the "temperature model" currently used is not sufficiently accurate or optimally constituted

Method used

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  • Method and apparatus for monitoring thermal load of vehicle clutch
  • Method and apparatus for monitoring thermal load of vehicle clutch

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Embodiment Construction

[0013] FIGS. 1 and 2 firstly show a method for monitoring the thermal load of a clutch (not shown in detail) of a motor vehicle (not shown in detail here).

[0014] 1 and 2 show in particular the circuit sequence of a corresponding device operating in this way. These methods are used in particular to avoid clutch thermal shock, for example they implement the dual clutches of a dual clutch transmission. In this case, the thermal load of the clutch is calculated and / or determined, wherein a controller, also not shown in detail here, is provided for controlling the clutch to be controlled in order to disconnect the clutch in time when the thermal load exceeds a threshold value.

[0015] The above-mentioned drawbacks are now thus avoided, and with reference to FIG. 1 , the rotational speed of the engine and / or the torque of the engine and / or the rotational speed of the transmission input shaft are determined and / or calculated (this can be done, for example, by means of correspondi...

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Abstract

The invention discloses a method for monitoring a thermal load of a clutch a car, specifically for avoiding a thermal shock of the clutch, preferably a double clutch of double clutch transmission, wherein comprising calculating and / or determining a thermal load of the clutch. A controller is provided for controlling the clutch. Therefore, the shortage is overcame to confirm and / or calculate the speed and / or the torque of an engine and / or the rotation speed of a transmission input shaft, and thereby determining the friction power of the clutch; the friction power is integrated over a certain time interval. When the integrated friction power is currently matched and reaches the determined frictional energy threshold value, that is, during danger of a thermal overloading of the clutch, the clutch is at least partially disconnected.

Description

technical field [0001] The invention relates to a method for monitoring the thermal load on a motor vehicle clutch, in particular for avoiding thermal shocks of the clutch, for example a dual clutch for a dual clutch transmission, wherein the thermal load on the clutch is calculated and / or determined, with the clutch controller. Furthermore, the invention relates to a device for monitoring the thermal load on a motor vehicle clutch, in particular for avoiding thermal shocks of the clutch, for example a dual clutch for a dual clutch transmission, wherein the thermal load on the clutch can be calculated and / or determined, with The controller that controls the clutch operates as described above. Background technique [0002] Various methods and devices are known in the prior art for monitoring the thermal load of clutches, ie motor vehicle clutches. For example, a motor vehicle transmission, in particular a dual clutch of a dual clutch transmission, is controlled accordingly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06F16H63/46F16H59/36
CPCF16D48/06F16D2500/30405F16D2500/30406F16D2500/3065F16D2500/3067F16D2500/30816F16D2500/50296F16D2500/7041F16D2500/70424F16D2500/7105
Inventor T·卢克曼T·布兰德斯
Owner VOLKSWAGEN AG
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