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:
Dec. 29, 2020
Filed:
Oct. 17, 2018
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Martin Lasch, Freising, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A device is provided for activating a synchronous machine arranged in a vehicle. The vehicle has a gearbox and driven wheels in operative connection therewith. The synchronous machine is designed to drive the driven wheels via the gearbox. In the vehicle there is a lubricating unit, which is designed to lubricate the gearbox by way of a lubricant, for this purpose the lubricant flowing through the gearbox and at least part of the synchronous machine. The device is configured to operate the synchronous machine in a heating operating mode, which is different from a customary driving operating mode, when there are defined conditions that require heating when starting. At least one operating variable of the synchronous machine is set in the heating operating mode specifically such that, in the synchronous machine, there is a greater current heat loss in comparison with the customary driving operating mode, in order in this way to heat up the lubricant in the heating operating mode.