Patents by Inventor Junichiro OHTSUBO

Junichiro OHTSUBO 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: 11603928
    Abstract: A vehicle drive device (1) is disclosed that includes a shift detent mechanism (90); an actuator (74) that generates drive power for allowing the shift detent mechanism to operate; a sensor (135) that generates sensor information indicating an amount of operation of the shift detent mechanism; a control part (153) that controls the actuator; and a clutch (30) that is synchronized with operation of the shift detent mechanism, and when the control part changes a state of the clutch, the control part performs feedback control of the actuator based on a relationship between a target value for an amount of operation of the shift detent mechanism and the sensor information, and before completing the change in the state of the clutch, the feedback control ends and operation of the actuator stops.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: March 14, 2023
    Assignee: AISIN CORPORATION
    Inventors: Yasuyuki Sato, Subrata Saha, Hideki Kakisako, Shotaro Kondo, Junichiro Ohtsubo
  • Publication number: 20220107021
    Abstract: A vehicle drive device (1) is disclosed that includes a shift detent mechanism (90); an actuator (74) that generates drive power for allowing the shift detent mechanism to operate; a sensor (135) that generates sensor information indicating an amount of operation of the shift detent mechanism; a control part (153) that controls the actuator; and a clutch (30) that is synchronized with operation of the shift detent mechanism, and when the control part changes a state of the clutch, the control part performs feedback control of the actuator based on a relationship between a target value for an amount of operation of the shift detent mechanism and the sensor information, and before completing the change in the state of the clutch, the feedback control ends and operation of the actuator stops.
    Type: Application
    Filed: March 19, 2020
    Publication date: April 7, 2022
    Applicant: AISIN CORPORATION
    Inventors: Yasuyuki SATO, Subrata SAHA, Hideki KAKISAKO, Shotaro KONDO, Junichiro OHTSUBO
  • Patent number: 11186284
    Abstract: A control device performs upshifting in a state in which an operating point of a rotating electrical machine for outputting requirement-based torque at wheel-based rotational speed falls within an operable range of the rotating electrical machine both before and after shifting a shift speed by the upshifting, and in which before shifting the shift speed, output torque from the rotating electrical machine is less than or equal to determination torque (T1), the wheel-based rotational speed being rotational speed of the rotating electrical machine based on rotational speed (V) of a wheel, the requirement-based torque being output torque from the rotating electrical machine based on required wheel transmission torque, and the determination torque (T1) being torque obtained by subtracting an amount of increased torque (?Tmg) resulting from torque increase control from maximum torque (Tmax) that can be outputted from the rotating electrical machine at the wheel-based rotational speed.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: November 30, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Ryo Watanabe, Yasuyuki Sato, Kenta Kimata, Takuro Iwase, Junichiro Ohtsubo
  • Publication number: 20210268916
    Abstract: A control target for a control device (3) is a vehicle drive device (1) having an automatic transmission (2) and an oil pump (OP) for driving the automatic transmission (2) which are provided in a power transmission path connecting a rotating electrical machine (MG) to a wheel (W1), the oil pump (OP) rotating at rotational speed determined based on wheel speed which is rotational speed of the wheel (W1). The control device (3) performs regeneration by the rotating electrical machine (MG) during transmission operation of the automatic transmission (2).
    Type: Application
    Filed: July 19, 2019
    Publication date: September 2, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Ryo WATANABE, Yasuyuki SATO, Kenta KIMATA, Junichiro OHTSUBO
  • Publication number: 20210237740
    Abstract: A control device performs upshifting in a state in which an operating point of a rotating electrical machine for outputting requirement-based torque at wheel-based rotational speed falls within an operable range of the rotating electrical machine both before and after shifting a shift speed by the upshifting, and in which before shifting the shift speed, output torque from the rotating electrical machine is less than or equal to determination torque (T1), the wheel-based rotational speed being rotational speed of the rotating electrical machine based on rotational speed (V) of a wheel, the requirement-based torque being output torque from the rotating electrical machine based on required wheel transmission torque, and the determination torque (T1) being torque obtained by subtracting an amount of increased torque (?Tmg) resulting from torque increase control from maximum torque (Tmax) that can be outputted from the rotating electrical machine at the wheel-based rotational speed.
    Type: Application
    Filed: July 19, 2019
    Publication date: August 5, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Ryo WATANABE, Yasuyuki SATO, Kenta KIMATA, Takuro IWASE, Junichiro OHTSUBO