Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR REDUCING JUDDERING VIBRATIONS IN A FRICTION CLUTCH IN A DRIVE TRAIN OF A MOTOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2015/158344
Kind Code:
A3
Abstract:
The invention relates to a method for reducing juddering vibrations of a friction clutch (3) that is automatically controlled by a clutch actuator on the basis of a target clutch torque (M(s)) associated with a clutch torque to be transmitted and arranged in a drive train of a motor vehicle between an internal combustion engine and a gear mechanism, having an actual clutch torque (M(i)) that is vibration-affected due to intermittently occurring vibrations. From a transmission behavior of the actual clutch torque (M(i)), an absolute amplitude and a phase of an input signal detected at the output of the friction clutch (3) and transmitted to a control unit (5) are detected. Therefrom, a phase-selective interference torque is determined, wherefrom a phase-correct correction torque (M(k)) is determined, by means of which the target clutch torque (M(s)) is corrected using the control unit (5). In order to be able to configure the method in a robust manner, the correction torque (M(k)) is weighted with a predefined amplification factor.

Inventors:
NEUBERTH ULRICH (DE)
EPPLER FLORIAN (DE)
MÜLLER DANIEL (DE)
REUSCHEL MICHAEL (DE)
Application Number:
DE2015/200197
Publication Date:
December 17, 2015
Filing Date:
March 26, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SCHAEFFLER TECHNOLOGIES AG (DE)
International Classes:
F16D48/06
Domestic Patent References:
WO2003019029A12003-03-06
Foreign References:
DE102012217132A12013-04-04
DE102006014072A12007-10-04
DE102013204698A12013-10-17
Download PDF: