Patents by Inventor Yasuhiro Ijichi

Yasuhiro Ijichi 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: 8816676
    Abstract: The position sensor includes a shift lever used to select one of five ranges P, R, N, D, and B, fixed contacts corresponding to the ranges P, R, N, D, and B, and movable contacts configured to be electrically connected to the fixed contacts. The fixed contacts include regular fixed contacts, first backup fixed contacts, and second backup fixed contacts. The first and second backup fixed contacts have their lengths in the moving direction of the movable contacts configured to be longer than the length of the regular fixed contact that corresponds to the first and second backup fixed contacts.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: August 26, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideaki Yamashita, Yasuhiro Ijichi, Hiroshi Takei
  • Patent number: 8544577
    Abstract: A hybrid vehicle comprises an engine 2, a motor generator 4, a torque converter 6 with a lock-up clutch 5, and a ratio-change mechanism 7. A control system for the hybrid vehicle comprises a rotational sensor 22, which detects the slip ratio of the torque converter, and a hydraulic control valve 12, which controls the engagement of the lock-up clutch. While the vehicle is moving along with the accelerator pedal being released from its stepped down condition, a driving force from the wheels is transmitted to the motor generator 4 for energy regeneration. If the slip ratio of the torque converter is equal to or smaller than a first threshold value, then only the lock-up clutch is controlled into engagement. However, if the slip ratio is between the first threshold value and a second threshold value, then additionally the motor generator is controlled in cooperative operation.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 1, 2013
    Assignee: Honda Motor Co., Ltd
    Inventors: Kazuhiko Kitano, Masachika Kimura, Yasuhiro Ijichi, Yutaka Ishikawa, Takashi Horiguchi
  • Patent number: 8498791
    Abstract: A lock-up control apparatus includes a kick-down instruction detector configured to detect a kick-down shift transmission instruction during application of a lock-up clutch. A first lock-up control amount changer is configured to change the lock-up control amount when the kick-down shift transmission instruction is detected. An intermediate gear speed determinator is configured to determine whether the kick-down shift transmission instruction includes an intermediate gear speed shift transmission instruction to an intermediate shift transmission gear speed. A second lock-up control amount changer is configured to change the lock-up control amount when the kick-down shift transmission instruction includes the intermediate gear speed shift transmission instruction. A target gear speed shift transmission instruction detector is configured to detect a target gear speed shift transmission instruction.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: July 30, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Akio Muto, Masaaki Takamatsu, Yasuhiro Ijichi
  • Patent number: 8061463
    Abstract: A hybrid vehicle comprises an engine 2, a motor generator 4, a torque converter 6 with a lock-up clutch 5, and a ratio-change mechanism 7. A control system for the hybrid vehicle comprises a rotational sensor 22, which detects the slip ratio of the torque converter, and a hydraulic control valve 12, which controls the engagement of the lock-up clutch. While the vehicle is moving along with the accelerator pedal being released from its stepped down condition, a driving force from the wheels is transmitted to the motor generator 4 for energy regeneration. If the slip ratio of the torque converter is equal to or smaller than a first threshold value, then only the lock-up clutch is controlled into engagement. However, if the slip ratio is between the first threshold value and a second threshold value, then additionally the motor generator is controlled in cooperative operation.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: November 22, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuhiko Kitano, Masachika Kimura, Yasuhiro Ijichi, Yutaka Ishikawa, Takashi Horiguchi
  • Publication number: 20110130933
    Abstract: A lock-up control apparatus includes a kick-down instruction detector configured to detect a kick-down shift transmission instruction during application of a lock-up clutch. A first lock-up control amount changer is configured to change the lock-up control amount when the kick-down shift transmission instruction is detected. An intermediate gear speed determinator is configured to determine whether the kick-down shift transmission instruction includes an intermediate gear speed shift transmission instruction to an intermediate shift transmission gear speed. A second lock-up control amount changer is configured to change the lock-up control amount when the kick-down shift transmission instruction includes the intermediate gear speed shift transmission instruction. A target gear speed shift transmission instruction detector is configured to detect a target gear speed shift transmission instruction.
    Type: Application
    Filed: November 26, 2010
    Publication date: June 2, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Akio MUTO, Masaaki Takamatsu, Yasuhiro Ijichi
  • Publication number: 20090294194
    Abstract: A hybrid vehicle comprises an engine 2, a motor generator 4, a torque converter 6 with a lock-up clutch 5, and a ratio-change mechanism 7. A control system for the hybrid vehicle comprises a rotational sensor 22, which detects the slip ratio of the torque converter, and a hydraulic control valve 12, which controls the engagement of the lock-up clutch. While the vehicle is moving along with the accelerator pedal being released from its stepped down condition, a driving force from the wheels is transmitted to the motor generator 4 for energy regeneration. If the slip ratio of the torque converter is equal to or smaller than a first threshold value, then only the lock-up clutch is controlled into engagement. However, if the slip ratio is between the first threshold value and a second threshold value, then additionally the motor generator is controlled in cooperative operation.
    Type: Application
    Filed: June 25, 2009
    Publication date: December 3, 2009
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Kazuhiko KITANO, Masachika KIMURA, Yasuhiro IJICHI, Yutaka ISHIKAWA, Takashi HORIGUCHI
  • Publication number: 20060108163
    Abstract: A hybrid vehicle comprises an engine 2, a motor generator 4, a torque converter 6 with a lock-up clutch 5, and a ratio-change mechanism 7. A control system for the hybrid vehicle comprises a rotational sensor 22, which detects the slip ratio of the torque converter, and a hydraulic control valve 12, which controls the engagement of the lock-up clutch. While the vehicle is moving along with the accelerator pedal being released from its stepped down condition, a driving force from the wheels is transmitted to the motor generator 4 for energy regeneration. If the slip ratio of the torque converter is equal to or smaller than a first threshold value, then only the lock-up clutch is controlled into engagement. However, if the slip ratio is between the first threshold value and a second threshold value, then additionally the motor generator is controlled in cooperative operation.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 25, 2006
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuhiko Kitano, Masachika Kimura, Yasuhiro Ijichi, Yutaka Ishikawa, Takashi Horiguchi
  • Patent number: 6511400
    Abstract: A control system for executing an upshift from an off-going speed ratio to an on-coming speed ratio by controlling the release of the hydraulic pressure from the frictionally engaging element used for the off-going speed ratio and by controlling the supply of the hydraulic pressure to the frictionally engaging element used for the on-coming speed ratio comprises first and second off-going pressure releasing valves 70 and 80, which release the hydraulic pressure of the frictionally engaging element used for the off-going speed ratio, and a linear solenoid valve 60, which controls the operation of the off-going pressure releasing valves. The linear solenoid valve 60 controls the operation of the off-going pressure releasing valves in correspondence to the throttle opening of the engine. In this case, the smaller the throttle opening of the engine, the earlier the timing for releasing the hydraulic pressure from the frictionally engaging element used for the off-going speed ratio is set.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: January 28, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Kimura, Yasuhiro Ijichi, Yuuji Okazaki
  • Patent number: 5478294
    Abstract: A control apparatus for a hydraulically operated vehicular transmission has a plurality of transmission trains to be established by a selective operation of a plurality of hydraulic engaging elements. The apparatus has a selecting device for selecting a transmission train according to a running condition of a vehicle. The apparatus is provided with a detecting device for detecting a power transmission capability value of the hydraulic engaging elements, and a device for determining a transmission train to be established, based on a detected result of the detecting device and a selected result of the selecting device. The detecting device detects a hydraulic engaging element whose power transmission capability value is above a predetermined value and designates a transmission train that corresponds to the detected hydraulic engaging element.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: December 26, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hideo Furukawa, Chihiro Matsubara, Yasuhiro Ijichi