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:
Jan. 23, 2018
Filed:
Feb. 03, 2015
Magna Powertrain Bad Homburg Gmbh, Bad Homburg, DE;
Thilo Mauser, Bad Vilbel, DE;
Van Doan Nguyen, Neu-Anspach, DE;
MAGNA POWERTRAIN BAD HOMBURG GMBH, Bad Homburg, DE;
Abstract
A variable displacement transmission pump having a controller for adjusting the displaced volume, which controller actuates corresponding adjuster actuators of the adjustable pump via a control valve, so that the pump can be adjusted from minimum to maximum displaced volume in order to achieve a constant pump outlet pressure for supplying a hydraulically operated transmission, wherein for different operating points of both the adjustable pump and the transmission, the input variables of the controller are adjusted in such a way that, independently of the individual operating points, the overall damping of the control system comprising pump and transmission—that is, using corresponding influence variables from these systems—can be maintained substantially constant under variable operating conditions by means of adjustable controller amplification.