Patents by Inventor Noritaka Aoyama

Noritaka Aoyama 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: 10808840
    Abstract: A transmission control device controls a CVT installed in a vehicle. The device has, as modes for the CVT, a CVT mode M1 for changing a transmission gear ratio steplessly based on the operating state of the vehicle, and a stepped transmission mode M2 for changing the transmission gear ratio stepwise based on the operating state of the vehicle. The device includes a transmission mode switching control unit (controller) 12 for controlling switching between the CVT mode M1 and the stepped transmission mode M2 based on an actual accelerator opening. The transmission mode switching control unit (controller) 12 performs switching from the CVT mode M1 to the stepped transmission mode M2, if the actual accelerator opening reaches or exceeds a first threshold value T1 set in a plurality of stages so as to increase stepwise in accordance with an increase in a vehicle speed.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: October 20, 2020
    Assignees: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, JATCO LTD
    Inventors: Noritaka Aoyama, Azusa Shimoda, Masataka Ohtsuka, Ken Hirashita, Nobuhiko Morifuji, Mitsuki Ishizuka, Hiromasa Masuda, Yukinobu Sakakibara
  • Publication number: 20200300357
    Abstract: A transmission control device controls a CVT installed in a vehicle. The device has, as modes for the CVT, a CVT mode M1 for changing a transmission gear ratio steplessly based on the operating state of the vehicle, and a stepped transmission mode M2 for changing the transmission gear ratio stepwise based on the operating state of the vehicle. The device includes a transmission mode switching control unit (controller) 12 for controlling switching between the CVT mode M1 and the stepped transmission mode M2 based on an actual accelerator opening. The transmission mode switching control unit (controller) 12 performs switching from the CVT mode M1 to the stepped transmission mode M2, if the actual accelerator opening reaches or exceeds a first threshold value T1 set in a plurality of stages so as to increase stepwise in accordance with an increase in a vehicle speed.
    Type: Application
    Filed: October 10, 2018
    Publication date: September 24, 2020
    Applicants: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, JATCO Ltd
    Inventors: Noritaka AOYAMA, Azusa SHIMODA, Masataka OHTSUKA, Ken HIRASHITA, Nobuhiko MORIFUJI, Mitsuki ISHIZUKA, Hiromasa MASUDA, Yukinobu SAKAKIBARA
  • Patent number: 10518641
    Abstract: The control apparatus for a vehicle includes a determination unit that determines whether or not a start condition is established, the start condition including when a torque converter is in a lockup state, and when the vehicle is in an accelerating state; and a display control unit that causes an acting number of rotations to be displayed on a tachometer instead of an actual number of rotations when it is determined by the determination unit that the start condition is established. The display control unit calculates the acting number of rotations based on a target value of an input number of rotations of a continuously variable transmission, and varies the acting number of rotations with a rate of change having an absolute value that is greater than an absolute value of a rate of change of the actual number of rotations upon an abrupt change in the target value.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Teppei Tanizoe, Noritaka Aoyama, Kenji Ohmura, Masataka Ohtsuka, Nagamitsu Hiraoka, Ken Hirashita, Takahisa Fujiwara
  • Patent number: 10131230
    Abstract: A control apparatus for a vehicle includes a determination unit that determines whether or not a start condition is established, the start condition including a torque converter is in a non-lock-up state and the vehicle is starting; and a display control unit that causes a virtual number of rotations to be displayed on a tachometer instead of an actual number of rotations when it is determined by the determination unit that the start condition is established. The display control unit calculates an acting number of rotations by referring to the actual number of rotations and a number of rotations on a driving wheel side relative to the torque converter in an automatic transmission, and causes the acting number of rotations to be displayed on the tachometer as the virtual number of rotations.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 20, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Teppei Tanizoe, Noritaka Aoyama, Kenji Ohmura, Masataka Ohtsuka, Nagamitsu Hiraoka, Ken Hirashita, Takahisa Fujiwara
  • Patent number: 10071737
    Abstract: There is provided with an automatic transmission (2) having a clutch (32) and a brake device (6) which holds a brake force during a stop of an engine (1). There is provided with an engine control section (11) which performs an automatic stop of the engine and a re-start of the engine and a release control section (14) which releases a holding of the brake force during the re-start of the engine. The release control section (14) releases the holding of the brake force when an engagement state of the clutch (32) is a predetermined state in case where an accelerator off state occurs until the engagement state of the clutch (32) becomes the predetermined state and releases the holding of the brake force when the engagement state of the clutch (32) is an engagement state weaker than the predetermined state, during a re-start of the engine (1).
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: September 11, 2018
    Assignee: JATCO Ltd
    Inventors: Noritaka Aoyama, Azusa Shimoda, Yuki Ono, Tomoaki Kabe
  • Patent number: 10024428
    Abstract: A hydraulic control device includes an oil pump for generating a hydraulic pressure by being rotated by power of a driving force source, a driving force source stopping unit that stops rotation of the driving force source when a predetermined condition holds, and a cut-off unit that cuts off transmission of the power from the driving force source to the oil pump when the driving force source rotates in a reverse direction as the rotation of the driving force source is stopped by the driving force source stopping unit.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: July 17, 2018
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Naohiro Yamada, Keichi Tatewaki, Shinichiro Watanabe, Noritaka Aoyama
  • Publication number: 20180194226
    Abstract: A control apparatus for a vehicle includes a determination unit that determines whether or not a start condition is established, the start condition including a torque converter is in a non-lock-up state and the vehicle is starting; and a display control unit that causes a virtual number of rotations to be displayed on a tachometer instead of an actual number of rotations when it is determined by the determination unit that the start condition is established. The display control unit calculates an acting number of rotations by referring to the actual number of rotations and a number of rotations on a driving wheel side relative to the torque converter in an automatic transmission, and causes the acting number of rotations to be displayed on the tachometer as the virtual number of rotations.
    Type: Application
    Filed: December 11, 2017
    Publication date: July 12, 2018
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Teppei TANIZOE, Noritaka AOYAMA, Kenji OHMURA, Masataka OHTSUKA, Nagamitsu HIRAOKA, Ken HIRASHITA, Takahisa FUJIWARA
  • Publication number: 20180194225
    Abstract: The control apparatus for a vehicle includes a determination unit that determines whether or not a start condition is established, the start condition including when a torque converter is in a lockup state, and when the vehicle is in an accelerating state; and a display control unit that causes an acting number of rotations to be displayed on a tachometer instead of an actual number of rotations when it is determined by the determination unit that the start condition is established. The display control unit calculates the acting number of rotations based on a target value of an input number of rotations of a continuously variable transmission, and varies the acting number of rotations with a rate of change having an absolute value that is greater than an absolute value of a rate of change of the actual number of rotations upon an abrupt change in the target value.
    Type: Application
    Filed: December 11, 2017
    Publication date: July 12, 2018
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Teppei TANIZOE, Noritaka AOYAMA, Kenji OHMURA, Masataka OHTSUKA, Nagamitsu HIRAOKA, Ken HIRASHITA, Takahisa FUJIWARA
  • Patent number: 9643577
    Abstract: A vehicle control device controls a vehicle that has an electric oil pump, executes idling stop control for stopping a drive source when predetermined conditions are satisfied, and is capable of applying a braking force in a state where a brake pedal is released. The vehicle control device determines whether or not the vehicle is stopped, determines whether or not the electric oil pump is driven, and executes the idling stop control when stop of the vehicle is determined, driving of the electric oil pump is determined, and the braking force is applied to the vehicle. Application of the braking force is started after the vehicle is determined to be stopped and the electric oil pump is determined to be driven.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 9, 2017
    Assignee: JATCO Ltd
    Inventors: Kousuke Waku, Hideshi Wakayama, Noritaka Aoyama
  • Publication number: 20160339918
    Abstract: There is provided with an automatic transmission (2) having a clutch (32) and a brake device (6) which holds a brake force during a stop of an engine (1). There is provided with an engine control section (11) which performs an automatic stop of the engine and a re-start of the engine and a release control section (14) which releases a holding of the brake force during the re-start of the engine. The release control section (14) releases the holding of the brake force when an engagement state of the clutch (32) is a predetermined state in case where an accelerator off state occurs until the engagement state of the clutch (32) becomes the predetermined state and releases the holding of the brake force when the engagement state of the clutch (32) is an engagement state weaker than the predetermined state, during a re-start of the engine (1).
    Type: Application
    Filed: January 29, 2015
    Publication date: November 24, 2016
    Applicant: JATCO Ltd
    Inventors: Noritaka AOYAMA, Azusa SHIMODA, Yuki ONO, Tomoaki KABE
  • Patent number: 9353857
    Abstract: A vehicle control device for controlling a vehicle including a first power transmission mechanism arranged between a drive source and a drive wheel, and a second power transmission mechanism which is arranged in series with the first power transmission mechanism and which changes a speed ratio between an input shaft and an output shaft, includes slip detection means configured to detect whether or not a slip occurs in the first power transmission mechanism, and shift means configured to reduce the slip by shifting the second power transmission mechanism in a case where occurrence of the slip is detected by the slip detection means.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: May 31, 2016
    Assignee: JATCO LTD
    Inventors: Kousuke Waku, Hideshi Wakayama, Noritaka Aoyama
  • Patent number: 9334933
    Abstract: A control device for continuously variable transmission is composed of a continuously variable transmission mechanism and friction engagement elements, and includes a control unit for decreasing, during a coast stop control to stop a driving power source in a traveling state of a vehicle, a transmission torque capacity transmittable by the friction engagement elements to fall under a belt capacity being torque transmittable by a belt using a holding force of pulleys.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 10, 2016
    Assignee: JATCO LTD
    Inventors: Noritaka Aoyama, Hideshi Wakayama, Naohiro Yamada, Keichi Tatewaki, Kousuke Waku
  • Publication number: 20150345634
    Abstract: In a transmission comprising a driving force source, an oil pressure source that generates oil pressure lifting a driving force from the driving force source, a first power transmission unit having a first mechanical biasing mechanism, and a second power transmission unit having a second mechanical biasing mechanism, opening/closing unit is provided in an oil passage through which the oil pressure is supplied to the second power transmission unit in order to close the oil passage until the oil pressure supplied to the first power transmission unit reaches or exceeds a predetermined value.
    Type: Application
    Filed: December 25, 2013
    Publication date: December 3, 2015
    Applicant: JATCO LTD
    Inventors: Keichi TATEWAKI, Hideshi WAKAYAMA, Kousuke WAKU, Noritaka AOYAMA
  • Patent number: 9163722
    Abstract: A hydraulic control circuit includes an oil pump for generating a hydraulic pressure by being rotated by power of a driving force source, a line pressure oil passage in which at least a line pressure generated by adjusting the hydraulic pressure generated by the oil pump is supplied, a driving force source stopping unit that stops the rotation of the driving force source, and a hydraulic pressure reduction suppressing unit that is provided in the line pressure oil passage and suppresses a reduction of the line pressure accompanying reverse rotation of the driving force source when the rotation of the driving force source is stopped by the driving force source stopping unit.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: October 20, 2015
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Naohiro Yamada, Keichi Tatewaki, Shinichiro Watanabe, Noritaka Aoyama
  • Patent number: 9097315
    Abstract: The present invention is provided with a hydraulic control circuit including a hydraulic pump driven by a driving power source in order to supply an oil pressure to a hydraulic circuit, a hydraulic auxiliary unit for supplying an accumulated oil pressure to the hydraulic circuit, and a control valve for supplying at least one of oil pressures of the hydraulic pump and the hydraulic auxiliary unit to pulleys, and a control unit for executing a coast stop control to stop the driving power source while traveling and controlling, when an increase of torque inputted to the continuously variable transmission is detected or predicted during the coast stop control, the control valve so as to supply an oil pressure of the hydraulic auxiliary unit to the pulleys.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 4, 2015
    Assignee: JATCO LTD
    Inventors: Noritaka Aoyama, Hideshi Wakayama, Naohiro Yamada, Keichi Tatewaki, Kousuke Waku
  • Publication number: 20150142286
    Abstract: A vehicle control device controls a vehicle that has an electric oil pump, executes idling stop control for stopping a drive source when predetermined conditions are satisfied, and is capable of applying a braking force in a state where a brake pedal is released. The vehicle control device determines whether or not the vehicle is stopped, determines whether or not the electric oil pump is driven, and executes the idling stop control when stop of the vehicle is determined, driving of the electric oil pump is determined, and the braking force is applied to the vehicle. Application of the braking force is started after the vehicle is determined to be stopped and the electric oil pump is determined to be driven.
    Type: Application
    Filed: May 28, 2013
    Publication date: May 21, 2015
    Applicant: JATCO Ltd
    Inventors: Kousuke Waku, Hideshi Wakayama, Noritaka Aoyama
  • Patent number: 9022901
    Abstract: A coast stop vehicle which stops an engine during the travel of the vehicle is provided with a variator including a pair of pulleys and a belt mounted between the pulleys and capable of continuously changing a speed ratio. A controller judges whether or not coast stop conditions to stop the engine during the travel of the vehicle hold, stops the engine when the coast stop conditions hold, and prevents the speed ratio from being upshifted to a higher side than a speed ratio at the time of starting the coast stop control during the coast stop control.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: May 5, 2015
    Assignee: JATCO Ltd
    Inventors: Shinichiro Watanabe, Keichi Tatewaki, Naohiro Yamada, Noritaka Aoyama
  • Patent number: 8996233
    Abstract: A vehicle control device controls a vehicle including a first oil pump adapted to be driven by power generated by a first drive source, automatically stop when a predetermined condition is satisfied, and supply oil to a power transmission unit and a second oil pump adapted to supply oil to the power transmission unit when the drive source is in an automatically stopped state, and includes a control unit adapted to continue an automatic stop until it is determined to restart the first drive source based on a parameter with which a reduction in drive force responsiveness to a drive force request from a driver, not including the stop of the first drive source, can be determined after an automatic stop command of the first drive source is output and if there is an abnormality in the second oil pump.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: March 31, 2015
    Assignee: Jatco Ltd
    Inventors: Kousuke Waku, Hideshi Wakayama, Noritaka Aoyama
  • Patent number: 8958960
    Abstract: A coast stop vehicle includes power transmission means provided between a drive source and drive wheels, drive source automatic stop means configured to stop the drive source during vehicle running when a value indicating a driving state of the vehicle is in a drive source stop permission region, slip determination means configured to determine whether or not there is slip in the power transmission means while the drive source is stopped by the drive source automatic stop means, and a changer means configured to narrow the drive source stop permission region when the occurrence of the slip in the power transmission means was determined by the slip determination means.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: February 17, 2015
    Assignee: Jatco Ltd
    Inventors: Hideshi Wakayama, Noritaka Aoyama, Kousuke Waku, Hiroyasu Tanaka, Keichi Tatewaki
  • Patent number: 8932182
    Abstract: A coast stop vehicle, includes an engine, a transmission arranged between the engine and drive wheels and having a plurality of gear positions, a coast stop starting unit which automatically stops the engine when a coast stop start condition holds during travel, a coast stop releasing unit which automatically starts the engine when a coast stop release condition holds during a coast stop, and a downshifting unit which starts engagement of a frictional engagement element, which realizes a lower gear position than the one when the coast stop release condition holds, before complete explosion of the engine and causes a downshift of the transmission when the coast stop release condition holds.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: January 13, 2015
    Assignee: JATCO Ltd
    Inventors: Keichi Tatewaki, Naohiro Yamada, Shinichiro Watanabe, Noritaka Aoyama