Patents by Inventor Yuichiro HIGASHIJI

Yuichiro HIGASHIJI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12194984
    Abstract: A drive control apparatus for an electric vehicle includes a controller that controls an engine, a traveling motor, a transmission, and an output clutch. The controller estimates the rotation angle of the motor by a first estimation method and controls the motor on the basis of the estimated angle. The estimation method is executable when the rotation speed of the motor is a threshold or higher. When a rotation angle sensor for the motor is in an abnormal state and a specific driving state is present, the controller controls one or more of the engine, the transmission, and the output clutch differently from when the sensor is in a normal state, and thereby maintains the rotation speed at the threshold or higher. The specific driving state is a state in which the rotation speed is lower than the threshold under the control when the sensor is in the normal state.
    Type: Grant
    Filed: July 5, 2021
    Date of Patent: January 14, 2025
    Assignee: SUBARU CORPORATION
    Inventors: Naoto Chiba, Atsushi Doki, Keigo Yamada, Yuichiro Higashiji, Takuya Yano
  • Publication number: 20240300476
    Abstract: A drive control apparatus for an electric vehicle includes a controller that controls an engine, a traveling motor, a transmission, and an output clutch. The controller estimates the rotation angle of the motor by a first estimation method and controls the motor on the basis of the estimated angle. The estimation method is executable when the rotation speed of the motor is a threshold or higher. When a rotation angle sensor for the motor is in an abnormal state and a specific driving state is present, the controller controls one or more of the engine, the transmission, and the output clutch differently from when the sensor is in a normal state, and thereby maintains the rotation speed at the threshold or higher. The specific driving state is a state in which the rotation speed is lower than the threshold under the control when the sensor is in the normal state.
    Type: Application
    Filed: July 5, 2021
    Publication date: September 12, 2024
    Inventors: Naoto CHIBA, Atsushi DOKI, Keigo YAMADA, Yuichiro HIGASHIJI, Takuya YANO