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:
Jun. 18, 2002
Filed:
Feb. 27, 1998
Ullrich Masberg, Rösrath/Kleineichen, DE;
Thomas Pels, Overath, DE;
Klaus-Peter Zeyen, Köln, DE;
Andreas Gründl, München, DE;
Bernhard Hoffmann, Starnberg, DE;
Other;
Abstract
The invention concerns a system for active reduction of rotational nonuniformities of a shaft, especially the drive shaft ( ) of an internal combustion engine or a shaft that is coupled or can be coupled to it, with at least one electric machine ( ), which is coupled or can be coupled to the shaft, wherein the electric machine ( ) is controlled such that it generates a rapidly varying torque, to reduce the rotational nonuniformities, and it superimposes on this torque a positive or negative torque in order to further achieve a driving action or braking or generator type action. The invention is also oriented to a corresponding method for active reduction of rotational nonuniformities.