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:
Sep. 09, 2025
Filed:
Aug. 24, 2021
Man Truck & Bus SE, Munich, DE;
Philipp Beierer, Munich, DE;
Thomas Reiter, Munich, DE;
Tim Schnädelbach, Pottenstein, DE;
Christian Kohrs, Plochingen, DE;
MAN Truck & Bus SE, Munich, DE;
Abstract
The present invention relates to a device () for supplying fluid to an electric drive train for a motor vehicle, preferably for cooling and lubricating a transmission () and/or for supplying oil to an electric motor of the electric drive train. The device () comprises a main pump () configured as a hydraulic fixed displacement pump for delivering fluid from a fluid reservoir () to the electric drive train. The apparatus () further comprises at least one auxiliary pump () configured as a hydraulic fixed displacement pump. The main pump () and the auxiliary pump () are mechanically driven by the transmission () of the electric drive train in such a way that a fixed transmission ratio exists between a pumping rotation speed of the main pump () and a pumping rotation speed of the auxiliary pump (), wherein the auxiliary pump () can be selectively connected by means of a controllable actuating device () for supplying fluid to the electric drive train.