Patents by Inventor Kengo NAGAI

Kengo NAGAI 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: 11543022
    Abstract: A vehicular control device that is mounted in a vehicle including an automatic gear shift device is configured to store vehicle control state information including a control state of the vehicle in a predetermined gear shift status when a rate of change in acceleration in the predetermined gear shift status at the time of gear shift is greater than a rate of change in acceleration in the predetermined gear shift status in the past. Accordingly, it is possible to store and accumulate vehicle control state information in a predetermined gear shift status with a higher importance out of predetermined gear shift statuses occurring at the time of gear shift.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: January 3, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kengo Nagai, Naoto Moriya
  • Publication number: 20220282787
    Abstract: A vehicular control device that is mounted in a vehicle including an automatic gear shift device is configured to store vehicle control state information including a control state of the vehicle in a predetermined gear shift status when a rate of change in acceleration in the predetermined gear shift status at the time of gear shift is greater than a rate of change in acceleration in the predetermined gear shift status in the past. Accordingly, it is possible to store and accumulate vehicle control state information in a predetermined gear shift status with a higher importance out of predetermined gear shift statuses occurring at the time of gear shift.
    Type: Application
    Filed: February 4, 2022
    Publication date: September 8, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kengo Nagai, Naoto Moriya
  • Patent number: 10711890
    Abstract: A control apparatus for a vehicle drive-force transmitting apparatus which includes a gear mechanism and a continuously-variable transmission mechanism and which establishes selectively a first state in which a drive force is transmitted by the gear mechanism and a second state in which the drive force is transmitted by the continuously-variable transmission mechanism. The control apparatus sets a shift-up-action permitted gear ratio of the continuously-variable transmission mechanism, which makes a state-switch-requiring shift-up action is permitted to be executed. When a running speed of the vehicle is not higher than a given value, a predetermined high gear ratio value is set as the shift-up-action permitted gear ratio. When the running speed is higher than the given value, a predetermined gear ratio range ranging from the predetermined high gear ratio value to a predetermined low gear ratio value is set as the shift-up-action permitted gear ratio.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: July 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Murakami, Masakazu Owatari, Norihiro Tsukamoto, Kengo Nagai, Satoshi Kato, Susumu Moritomo
  • Publication number: 20190145516
    Abstract: A control apparatus for a vehicle drive-force transmitting apparatus which includes a gear mechanism and a continuously-variable transmission mechanism and which establishes selectively a first state in which a drive force is transmitted by the gear mechanism and a second state in which the drive force is transmitted by the continuously-variable transmission mechanism. The control apparatus sets a shift-up-action permitted gear ratio of the continuously-variable transmission mechanism, which makes a state-switch-requiring shift-up action is permitted to be executed. When a running speed of the vehicle is not higher than a given value, a predetermined high gear ratio value is set as the shift-up-action permitted gear ratio. When the running speed is higher than the given value, a predetermined gear ratio range ranging from the predetermined high gear ratio value to a predetermined low gear ratio value is set as the shift-up-action permitted gear ratio.
    Type: Application
    Filed: October 9, 2018
    Publication date: May 16, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki MURAKAMI, Masakazu OWATARI, Norihiro TSUKAMOTO, Kengo NAGAI, Satoshi KATO, Susumu MORITOMO