Method for controlling vibration in power train and transmission and power train

A transmission system and transmission technology, applied in the direction of clutches, mechanical equipment, etc., can solve the problems that the vibration damping function cannot be effectively implemented, the transfer characteristic is unstable, and the transfer function is not stable.

Active Publication Date: 2016-11-09
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For example, if changes in the transfer characteristics of the actuator (unstable transfer function) go undetected, the desired damping function may not be effectively implemented

Method used

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  • Method for controlling vibration in power train and transmission and power train
  • Method for controlling vibration in power train and transmission and power train
  • Method for controlling vibration in power train and transmission and power train

Examples

Experimental program
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Embodiment Construction

[0041] exist figure 1 The drive train 1 of the example of a motor vehicle 100 (dashed box) is shown in . The engine 2 is connected via a clutch 3 to a transmission 4 , which drives drive wheels 8 via a cardan shaft 5 , a differential 6 and two cardan shafts 7 .

[0042] The clutch 3 is actuated by an actuator 9 which is actuated, for example electrohydraulic or electromechanical. The transmission 4 is designed as an automatic transmission, and in particular as a dual clutch transmission, wherein one or more clutches 3 are designed as friction clutches.

[0043] Both the shift that triggers the actuation of the clutch 3 and the shift that is adjusted accordingly in the transmission 4 are triggered by the actuating device 10 and carried out by the adjusting device 10 a. The load control of the engine 2 takes place via an oil supply pedal 11 , which actuates a power regulator 13 of the engine 2 either directly or via an engine control unit 12 .

[0044] In order to detect the ...

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Abstract

The invention discloses a method for controlling vibration in a power train and a transmission and a power train. The invention relates to a method for controlling vibration in a power train (1) of a motor vehicle (100). The power train includes a drive unit (2), a vehicle transmission (4) and an execution mechanism (9) which is intended for operating, especially a friction clutch (3). The method includes: modulating the torque of a clutch by means of a vibration attenuation function for attenuating the vibration, implementing a testing function (SSOLL; 20) on the execution mechanism (9); determining actual transmission characteristics (SIST; 21) of the execution mechanism (9); determining the difference ([delta]OA; [delta]UA; [delta]T) between the actual transmission characteristics (SIST; 21) of the execution mechanism (9) and specified transmission characteristics (SSOLL; 20) of the execution mechanism (9), and implementing the vibration attenuation function (MK) based on the determined difference ([delta]OA; [delta]UA; [delta]T). The invention also relates to a transmission (3) and a power train (1) for implementing the method.

Description

technical field [0001] The invention relates to a method for controlling juddering vibrations in a drive train of a motor vehicle comprising a drive unit, a vehicle transmission and an actuator for actuating a friction clutch, wherein vibration damping for damping juddering vibrations The function modulates the clutch torque. Background technique [0002] Rudder vibrations are vibrations that occur frequently in drive trains and are caused by frictional contact at clutches. In particular, such vibrations occur in sliding friction clutches, where they are caused, for example, by self-excited friction vibrations in the friction system through the stick-slip effect. Tolerances in the clutch system that cause deviations from the original structural geometry or through wear can excite such vibrations. Judder vibrations additionally stress the relevant components in the drive train and impair driving comfort. Therefore, such chattering vibrations are undesirable. [0003] A nu...

Claims

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Application Information

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IPC IPC(8): F16D48/06B60W30/20
CPCF16D48/06F16D2500/10412F16D2500/3026F16D2500/30412F16D2500/30421F16D2500/30806F16D2500/50293F16D2500/7109B60W30/20F16D2500/1045F16D2500/1107F16D2500/50287F16D2500/7044
InventorR·霍夫曼
OwnerVOLKSWAGEN AG