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:
Mar. 04, 2025
Filed:
Jun. 27, 2023
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Alexander Haberstock, Ravensburg, DE;
Mario Hasel, Wangen, DE;
Clemens Moser, Mittelberg, AT;
Anshuman Deshpande, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method for the open-loop control of a pump system () includes accessing a hydraulic calculation model by an electronic control unit, which includes, for various operating states of a transmission, information regarding oil supplies of two pumps (P, S) of the pump system () and information regarding oil demands of the transmission. The method also include ascertaining a certain oil supply ({dot over (V)}), which the two pumps (P, S) provide in a certain operating state of the transmission according to the hydraulic calculation model. In addition, the method includes ascertaining a certain oil demand ({dot over (V)}), which the hydraulic system () requests of the two pumps (P, S) in the certain operating state of the transmission according to the hydraulic calculation model.