Patents by Inventor Masakazu Ohsako

Masakazu Ohsako 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).

  • Publication number: 20230347874
    Abstract: A method of controlling a hybrid vehicle including an engine, a motor, a starter, a friction engagement element provided between the engine and the motor, and a mechanical oil pump which is driven by the motor and supplies oil to the friction engagement element, is provided. When the friction engagement element is in a disengaged state, a first traveling mode using the motor is performed. When it is in an engaged state, a second traveling mode at least using the engine is performed. The method includes, when the first traveling mode is unperformable, starting the engine by the starter to perform the second traveling mode, activating the motor and performing a hydraulic pressure control for shifting the friction engagement element from the disengaged to engaged state after starting the engine. The hydraulic pressure control uses at least the hydraulic pressure from the mechanical oil pump driven by activating the motor.
    Type: Application
    Filed: March 23, 2023
    Publication date: November 2, 2023
    Inventors: Masakazu Ohsako, Keisuke Tanaka
  • Publication number: 20220306081
    Abstract: A method of controlling a hybrid vehicle is provided, which includes shifting a friction engagement element from a released state to a slipping or engaged state, and performing motor control where an engine is started using a motor in response to a startup demand of the stopped engine during vehicle traveling, applying as the motor control a first control in which a target speed to be set for the motor is instructed and feedback control of the motor is executed based on a speed detected by a motor speed sensor to be the target speed, determining whether a condition for switching the motor control from the first control to a second control in which a target torque to be outputted from the motor is instructed to cause the motor to output the target torque, is satisfied, and when determined to be satisfied, switching the motor control to the second control.
    Type: Application
    Filed: February 18, 2022
    Publication date: September 29, 2022
    Inventors: Yutaro Fukuda, Masakazu Ohsako