Patents by Inventor Tatsuya Ozeki

Tatsuya Ozeki 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: 20240151278
    Abstract: This clutch control device includes a clutch apparatus configured to connect and disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a driving force for actuating the clutch apparatus, a control unit configured to drive the clutch actuator, and an operating force transmission mechanism configured to transmit an operating force of a driver with respect to a clutch operator to the clutch apparatus, an operating force sensor configured to detect the operating force of the driver is provided in the operating force transmission mechanism, and the control unit drives the clutch actuator according to a detection value of the operating force sensor.
    Type: Application
    Filed: March 15, 2022
    Publication date: May 9, 2024
    Inventors: Junya Ono, Yoshiaki Tsukada, Takashi Ozeki, Koichi Furusato, Yuma Kaibe, Ryohei Tsuzuki, Yasushi Fujimoto, Tatsuya Ryuzaki
  • Patent number: 7713163
    Abstract: A control system for hybrid vehicles, in which a second prime mover is connected to an output member to which a power is transmitted from a first prime mover through a transmission in which a torque capacity is varied in accordance with an oil pressure, and which has a first hydraulic pump driven by the first prime mover for establishing an oil pressure to be fed to the transmission, and a second hydraulic pump arranged in parallel with the first hydraulic pump and driven by an electric motor. A torque limiter limits an output torque of the second prime mover temporarily to a predetermined torque which is lower than a maximum output torque, at a starting time of the first prime mover.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: May 11, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Hayashi, Masatoshi Ito, Hiroatsu Endo, Tatsuya Ozeki
  • Patent number: 7666115
    Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: February 23, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masatoshi Ito, Tatsuya Ozeki
  • Patent number: 7549351
    Abstract: A shift control system rotates an actuator to cause a wall of a detent plate to contact a roller of a detent spring, and detects the position of contact so as to detect the position of the wall of the detent plate. This wall position is set as a reference position of the actuator. Accordingly, the rotation of the actuator can appropriately be controlled even if an encoder which can only detect relative positional information is employed, and thus the shift range can appropriately be switched.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: June 23, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Taku Itoh, Kazuo Kawaguchi, Yasuo Shimizu
  • Patent number: 7549352
    Abstract: A shift control system rotates an actuator to cause a wall of a detent plate to contact a roller of a detent spring, and detects the position of contact so as to detect the position of the wall of the detent plate. This wall position is set as a reference position of the actuator. Accordingly, the rotation of the actuator can appropriately be controlled even if an encoder which can only detect relative positional information is employed, and thus the shift range can appropriately be switched.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: June 23, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Taku Itoh, Kazuo Kawaguchi, Yasuo Shimizu
  • Patent number: 7434641
    Abstract: A control apparatus of a hybrid vehicle having a first drive unit, a second drive unit, a HV battery, a shift control element, a battery state detection element, and a shifting-time drive control element. Furthermore, in the control apparatus, a battery balance control element is formed by an engine control element, a first motor control element, a second motor control element and the shifting-time drive control element. If the shift control element determines there is a need for shifting carried out by a stepped transmission, the battery balance control element calculates the amount of increase/decrease in the amount of charge of the HV battery in accordance with the state of the HV battery, and changes the engine operation point on the basis of the calculated amount of increase/decrease in the battery charge, prior to the shifting.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: October 14, 2008
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeki Takami, Kiyotomo Miura, Satoru Wakuta, Tatsuya Ozeki, Hiroatsu Endo
  • Publication number: 20080210033
    Abstract: A shift control system rotates an actuator to cause a wall of a detent plate to contact a roller of a detent spring, and detects the position of contact so as to detect the position of the wall of the detent plate. This wall position is set as a reference position of the actuator. Accordingly, the rotation of the actuator can appropriately be controlled even if an encoder which can only detect relative positional information is employed, and thus the shift range can appropriately be switched.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 4, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Taku Itoh, Kazuo Kawaguchi, Yasuo Shimizu
  • Publication number: 20080168853
    Abstract: A shift control system rotates an actuator to cause a wall of a detent plate to contact a roller of a detent spring, and detects the position of contact so as to detect the position of the wall of the detent plate. This wall position is set as a reference position of the actuator. Accordingly, the rotation of the actuator can appropriately be controlled even if an encoder which can only detect relative positional information is employed, and thus the shift range can appropriately be switched.
    Type: Application
    Filed: March 19, 2008
    Publication date: July 17, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Taku Itoh, Kazuo Kawaguchi, Yasuo Shimizu
  • Publication number: 20080139360
    Abstract: A control system for hybrid vehicles, in which a second prime mover is connected to an output member to which a power is transmitted from a first prime mover through a transmission in which a torque capacity is varied in accordance with an oil pressure, and which has a first hydraulic pump driven by the first prime mover for establishing an oil pressure to be fed to the transmission, and a second hydraulic pump arranged in parallel with the first hydraulic pump and driven by an electric motor. A torque limiter limits an output torque of the second prime mover temporarily to a predetermined torque which is lower than a maximum output torque, at a starting time of the first prime mover.
    Type: Application
    Filed: January 18, 2005
    Publication date: June 12, 2008
    Applicant: TOYOTA JIBOSHA KABUSHIKI KAISHA
    Inventors: Koji Hayashi, Masatoshi Ito, Hiroatsu Endo, Tatsuya Ozeki
  • Patent number: 7370547
    Abstract: A shift control system rotates an actuator to cause a wall of a detent plate to contact a roller of a detent spring, and detects the position of contact so as to detect the position of the wall of the detent plate. This wall position is set as a reference position of the actuator. Accordingly, the rotation of the actuator can appropriately be controlled even if an encoder which can only detect relative positional information is employed, and thus the shift range can appropriately be switched.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: May 13, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Taku Itoh, Kazuo Kawaguchi, Yasuo Shimizu
  • Patent number: 7314425
    Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: January 1, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masatoshi Ito, Tatsuya Ozeki
  • Patent number: 7261670
    Abstract: A control device of a hybrid drive unit, wherein an assist prime mover is connected through a transmission to an output member, to which a torque outputted by a main prime mover is transmitted. The control device comprises a first torque correcting means for correcting the torque to be transmitted from the main prime mover to the output member during a gear shift by the transmission.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: August 28, 2007
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroatsu Endo, Tatsuya Ozeki, Masataka Sugiyama
  • Publication number: 20070119640
    Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.
    Type: Application
    Filed: January 26, 2007
    Publication date: May 31, 2007
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masatoshi Ito, Tatsuya Ozeki
  • Patent number: 7178617
    Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 20, 2007
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kunio Morisawa, Tatsuya Ozeki
  • Patent number: 7137924
    Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism, in which a second motor generator is connected to the output shaft through a transmission wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump for generating an oil pressure to set a torque capacity, comprising: a trouble detecting means for detecting a trouble of the electric oil pump; and an internal combustion engine starting means for starting the internal combustion engine in case the trouble is detected by the trouble detecting means.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: November 21, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masatoshi Ito, Tatsuya Ozeki
  • Patent number: 7134982
    Abstract: A control system for a hybrid drive unit wherein an assist prime mover is connected through a transmission mechanism to an output member to which a torque outputted by a main prime mover is transmitted, a torque of said assist prime mover is limited within a preset range. Specifically, said torque is limited to an upper limit side in case the speed of said assist prime mover exceeds the preset value, and a lower limit value of the torque of the assist prime mover is set in case the output torque of said assist prime mover acts as a driving torque.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: November 14, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tatsuya Ozeki, Hiroatsu Endo
  • Publication number: 20060207373
    Abstract: A shift control system rotates an actuator to cause a wall of a detent plate to contact a roller of a detent spring, and detects the position of contact so as to detect the position of the wall of the detent plate. This wall position is set as a reference position of the actuator. Accordingly, the rotation of the actuator can appropriately be controlled even if an encoder which can only detect relative positional information is employed, and thus the shift range can appropriately be switched.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 21, 2006
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Taku Itoh, Kazuo Kawaguchi, Yasuo Shimizu
  • Patent number: 7108630
    Abstract: A control system for a hybrid drive unit, in which an assist prime mover is connected through a transmission mechanism to an output member, to which a torque outputted by a main prime mover is transmitted, comprises gear shift controller for switching a shift control condition of said transmission in accordance with the action state of said main prime mover. A gear shift is inhibited in case a vehicle is run by an assist prime mover, and the gear shift is inhibited also in case the assist prime mover outputs a torque in connection with starting the main prime mover. A transmission is operated into a state just before starting the shifting operation in case the gear shift is inhibited in connection with starting the main prime mover.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: September 19, 2006
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Tatsuya Ozeki, Hiroatsu Endo, Atsushi Kayukawa, Kazuomi Okasaka
  • Patent number: 7107869
    Abstract: A shift control system rotates an actuator to allow a wall of a detent plate and a roller of a detent spring to contact each other and then detects the position of contact so as to detect the position of the wall of the detent plate. After the wall position is determined, the actuator is driven in the direction opposite to the wall until the actuator reaches a position located before the wall position and distant therefrom by a predetermined amount, in order to cancel flexure or extension of the detent spring that is caused when the detent spring is pushed against the wall of the detent plate. Accordingly, such a situation where the shift position is moved by the recovery force of the detent spring can be avoided.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: September 19, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Sumiko Amamiya, Tatsuya Ozeki, Shigeru Kamio, Yasuhiro Nakai, Kazuo Kawaguchi, Yasuo Shimizu
  • Patent number: 7101309
    Abstract: A control system for a hybrid vehicle wherein a plurality of prime movers and wheels are connected in a power transmittable manner, comprising: a decider for deciding a power loss of a case in which a power of predetermined prime mover, which is one of a plurality of the prime movers is transmitted to a rotary member including another prime mover; and a controller for controlling a rotating state of the rotary member including said another prime mover on the basis of a decision result of the decider.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: September 5, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tatsuya Ozeki, Hiroatsu Endo