Patents by Inventor Susumu Moritomo

Susumu Moritomo 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: 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
  • Patent number: 10683933
    Abstract: A control apparatus for a vehicle drive-force transmitting apparatus which establishes selectively a first state in which a drive force is transmitted by a gear mechanism and a second state in which the drive force is transmitted by a continuously-variable transmission mechanism. The control apparatus executes a shift-up action requiring the first state to be switched to the second state, in (a) a case in which a state of the drive-force transmitting apparatus satisfies a first condition that a gear ratio of the continuously-variable transmission mechanism is not lower than a first gear ratio value and in (b) a case in which the state of the drive-force transmitting apparatus satisfies a second condition that a lap-down control is executed with the gear ratio of the continuously-variable transmission mechanism being not lower than a second gear ratio value that is lower than the first gear ratio value.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: June 16, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoshi Kato, Susumu Moritomo, Masakazu Owatari, Norihiro Tsukamoto
  • Publication number: 20190162303
    Abstract: A control apparatus for a vehicle drive-force transmitting apparatus which establishes selectively a first state in which a drive force is transmitted by a gear mechanism and a second state in which the drive force is transmitted by a continuously-variable transmission mechanism. The control apparatus executes a shift-up action requiring the first state to be switched to the second state, in (a) a case in which a state of the drive-force transmitting apparatus satisfies a first condition that a gear ratio of the continuously-variable transmission mechanism is not lower than a first gear ratio value and in (b) a case in which the state of the drive-force transmitting apparatus satisfies a second condition that a lap-down control is executed with the gear ratio of the continuously-variable transmission mechanism being not lower than a second gear ratio value that is lower than the first gear ratio value.
    Type: Application
    Filed: October 15, 2018
    Publication date: May 30, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoshi KATO, Susumu MORITOMO, Masakazu OWATARI, Norihiro TSUKAMOTO
  • 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
  • Patent number: 10234032
    Abstract: A control system for a vehicle transmission is provided. The control system includes an electronic control unit. The electronic control unit is configured to, when control for engaging the at least one engaging device that switches power transmission to power transmission via a first power transmission mechanism and control for increasing hydraulic pressure that is applied to a continuously variable transmission are required, control the continuously variable transmission and the at least one engaging device so as to start control for engaging the at least one engaging device first and, after a lapse of a predetermined time from the start of control for engaging the at least one engaging device, start control for increasing hydraulic pressure that is applied to the continuously variable transmission.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: March 19, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Susumu Moritomo, Makoto Sawada, Keita Sasaki
  • Publication number: 20180180180
    Abstract: When the speed ratio of a belt-type continuously variable transmission is equal to or larger than a predetermined threshold value, switching between a first power transmission path including a gear transmission mechanism and a second power transmission path including a belt-type continuously variable transmission is performed by means of clutches, so as to reduce a difference in an input shaft rotational speed applied to the clutches before and after the switching.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 28, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Susumu MORITOMO, Mitsuhiro FUKAO, Makoto SAWADA, Satoshi KATOH
  • Publication number: 20180010687
    Abstract: A control system for a vehicle transmission is provided. The control system includes an electronic control unit. The electronic control unit is configured to, when control for engaging the at least one engaging device that switches power transmission to power transmission via a first power transmission mechanism and control for increasing hydraulic pressure that is applied to a continuously variable transmission are required, control the continuously variable transmission and the at least one engaging device so as to start control for engaging the at least one engaging device first and, after a lapse of a predetermined time from the start of control for engaging the at least one engaging device, start control for increasing hydraulic pressure that is applied to the continuously variable transmission.
    Type: Application
    Filed: July 5, 2017
    Publication date: January 11, 2018
    Inventors: Susumu Moritomo, Makoto Sawada, Keita Sasaki
  • Patent number: 8296023
    Abstract: An ECU executes a program including the steps of: learning a differential pressure of a lock-up clutch; determining whether or not learning has been completed when a vehicle is in a coasting state and a brake is applied; lowering the lock-up differential pressure such that the lock-up clutch can be disengaged immediately and prohibiting or suppressing control for increasing transmission gain when learning has been completed; and increasing a lower limit guard value for the lock-up differential pressure and performing control for increasing the transmission gain when learning has not been completed.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: October 23, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Sei Kojima, Satoshi Kamijo, Shinya Toyoda, Susumu Moritomo
  • Publication number: 20100210412
    Abstract: An ECU executes a program including the steps of: learning a differential pressure of a lock-up clutch; determining whether or not learning has been completed when a vehicle is in a coasting state and a brake is applied; lowering the lock-up differential pressure such that the lock-up clutch can be disengaged immediately and prohibiting or suppressing control for increasing transmission gain when learning has been completed; and increasing a lower limit guard value for the lock-up differential pressure and performing control for increasing the transmission gain when learning has not been completed.
    Type: Application
    Filed: August 27, 2008
    Publication date: August 19, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sei Kojima, Satoshi Kamijo, Shinya Toyoda, Susumu Moritomo