The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2012
Filed:
Apr. 26, 2010
Thomas Winkler, Offenburg, DE;
Ali Dagdan, Karlsruhe, DE;
Thomas Winkler, Offenburg, DE;
Ali Dagdan, Karlsruhe, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A method for operating a drive train in a motor vehicle with a dual mass flywheel driven by an internal combustion engine via a crankshaft and at least a transmission input shaft of a transmission that can be coupled with an output part of the dual mass flywheel. Between the input part and output part a hysteresis-laden damping device is effective, which influences engine torque output from the internal combustion engine and load torque transmitted to at least a transmission input shaft through the hysteresis characteristic. To eliminate the disturbances caused by the dual mass flywheel a state model constantly determines rotation speeds of the input part and of the output part and depending on a differential angle determined from the rotation speeds and from the characteristic numbers of the damping device, a characteristic disturbance torque for influencing at least the load torque is determined in real time.