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. 16, 2026
Filed:
Oct. 04, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Suresh Gopalakrishnan, Troy, MI (US);
Craig S. Ross, Ypsilanti, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Chunhao J. Lee, Troy, MI (US);
Thomas W. Nehl, Shelby Township, MI (US);
Yulei Chen, Northville, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
An electric drive unit includes a housing and a rotor rotatably supported in the housing. The rotor includes a rotor shaft defining a rotor axis and a plurality of rotor laminations fixedly mounted to the shaft. The plurality of rotor laminations support a plurality of magnetic poles, and a hydraulic unit connected to the plurality of rotor laminations. The hydraulic unit has a magnetic shunt that is selectively shiftable relative to the plurality of magnetic poles. A position sensing system is operable to detect a rotational speed of the rotor and a position of the magnetic shunt relative to the plurality of magnetic poles. The position sensing system includes a rotor shaft position trigger coupled for rotation with the rotor shaft, and a magnetic shunt position trigger supported by the hydraulic unit.