ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,749, issued on March 31, was assigned to HUAWEI DIGITAL POWER TECHNOLOGIES Co. LTD. (Shenzhen, China).
"Powertrain, control apparatus and motor control unit" was invented by Zhengyi Tang (Shenzhen, China) and Qing Chang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A powertrain, a control apparatus, and a motor control unit. The powertrain includes a drive motor and a transmission device. The transmission device disconnects a transmission connection between the drive motor and a wheel based on a result of a comparison between a temperature or a viscosity of a lube oil and a preset parameter value, and a rotational speed of the dri...