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. 23, 2025
Filed:
Apr. 11, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Farzad Samie, Franklin, MI (US);
Peng Peng, Columbus, MI (US);
Xiaofeng Yang, Troy, MI (US);
Derek Frei Lahr, Ann Arbor, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A vehicle, system, and method of operating a motor of the vehicle. The motor includes a stator and a rotor. A motor controller controls a motor torque of the motor. A sensor measures a motor speed. A rotor temperature sensor measures a temperature of the rotor. A stator temperature sensor measures a temperature of the stator. A processor determines a stator heat loss at the stator based on the motor torque, the motor speed, and the stator temperature, determines a rotor heat loss at the rotor based on the motor torque, the motor speed, and the rotor temperature, and controls flow of a stator coolant stream through the stator at a stator coolant flow rate based on the stator heat loss and a rotor coolant stream through the rotor at a rotor coolant flow rate based on the rotor heat loss.