Patents by Inventor Hisayuki Itoh

Hisayuki Itoh 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: 11499510
    Abstract: In an engine system including an engine, and an exhaust gas recirculation device including a communicating pipe that communicates an exhaust pipe of the engine with an intake pipe, and a valve provided in the communicating pipe, and an electronic control unit, and its control method, the electronic control unit estimates the pressure in the intake pipe as an estimated intake pressure, and performs a jamming diagnosis to determine whether foreign matter is stuck in the valve, by comparing an intake pressure difference between a detected intake pressure and the estimated intake pressure with a threshold value, when a diagnosis condition including an opening change condition that the target opening becomes equal to or larger than a first predetermined opening and then becomes equal to or smaller than a second predetermined opening that is smaller than the first predetermined opening is satisfied.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: November 15, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Ichikawa, Hisayuki Itoh, Hirokazu Kato, Masaaki Yamaguchi
  • Patent number: 11359586
    Abstract: A hybrid vehicle includes an engine, an exhaust gas recirculation device, a traveling motor, and a control device. The exhaust gas recirculation device includes a communication pipe that allows an exhaust pipe and an intake pipe of the engine to communicate with each other and a valve that is provided in the communication pipe. The control device is configured to perform foreign matter removal control for opening and closing the valve when foreign matter caught in the valve is detected and the hybrid vehicle stops.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: June 14, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hisayuki Itoh, Koji Ichikawa, Hirokazu Kato, Masaaki Yamaguchi
  • Patent number: 11035324
    Abstract: A vehicle including: an engine; an exhaust gas recirculation device including a communication pipe by which an exhaust pipe of the engine and an intake pipe of the engine communicating, and a valve that is provided in the communication pipe; and a control device configured to control the engine, to control the valve based on a target opening of the valve, to perform automatic stopping of the engine based on satisfaction of an automatic stopping condition, and to perform automatic starting of the engine based on satisfaction of an automatic starting condition. The control device is configured to prohibit automatic stopping of the engine when it is determined that foreign matter is caught in the valve through catching diagnosis which is diagnosis of whether foreign matter is caught in the valve.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: June 15, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hisayuki Itoh, Koji Ichikawa, Masaaki Yamaguchi, Hirokazu Kato
  • Publication number: 20210123396
    Abstract: A hybrid vehicle includes an engine, an exhaust gas recirculation device, a traveling motor, and a control device. The exhaust gas recirculation device includes a communication pipe that allows an exhaust pipe and an intake pipe of the engine to communicate with each other and a valve that is provided in the communication pipe. The control device is configured to perform foreign matter removal control for opening and closing the valve when foreign matter caught in the valve is detected and the hybrid vehicle stops.
    Type: Application
    Filed: August 11, 2020
    Publication date: April 29, 2021
    Inventors: Hisayuki ITOH, Koji ICHIKAWA, Hirokazu KATO, Masaaki YAMAGUCHI
  • Publication number: 20210123397
    Abstract: An engine unit includes an engine, an exhaust gas recirculation device including a communication pipe by which an exhaust pipe of the engine and an intake pipe of the engine to communicating and a valve that is provided in the communication pipe, and a control device. The control device is configured to perform a foreign matter removal control that is opening and closing the valve when catching of foreign matter in the valve is detected and the engine stops.
    Type: Application
    Filed: September 2, 2020
    Publication date: April 29, 2021
    Inventors: Hisayuki ITOH, Koji ICHIKAWA, Hirokazu KATO, Masaaki YAMAGUCHI
  • Publication number: 20210115882
    Abstract: A vehicle including: an engine; an exhaust gas recirculation device including a communication pipe by which an exhaust pipe of the engine and an intake pipe of the engine communicating, and a valve that is provided in the communication pipe; and a control device configured to control the engine, to control the valve based on a target opening of the valve, to perform automatic stopping of the engine based on satisfaction of an automatic stopping condition, and to perform automatic starting of the engine based on satisfaction of an automatic starting condition. The control device is configured to prohibit automatic stopping of the engine when it is determined that foreign matter is caught in the valve through catching diagnosis which is diagnosis of whether foreign matter is caught in the valve.
    Type: Application
    Filed: August 19, 2020
    Publication date: April 22, 2021
    Inventors: Hisayuki ITOH, Koji ICHIKAWA, Masaaki YAMAGUCHI, Hirokazu KATO
  • Publication number: 20210115881
    Abstract: In an engine system including an engine, and an exhaust gas recirculation device including a communicating pipe that communicates an exhaust pipe of the engine with an intake pipe, and a valve provided in the communicating pipe, and an electronic control unit, and its control method, the electronic control unit estimates the pressure in the intake pipe as an estimated intake pressure, and performs a jamming diagnosis to determine whether foreign matter is stuck in the valve, by comparing an intake pressure difference between a detected intake pressure and the estimated intake pressure with a threshold value, when a diagnosis condition including an opening change condition that the target opening becomes equal to or larger than a first predetermined opening and then becomes equal to or smaller than a second predetermined opening that is smaller than the first predetermined opening is satisfied.
    Type: Application
    Filed: July 15, 2020
    Publication date: April 22, 2021
    Inventors: Koji ICHIKAWA, Hisayuki ITOH, Hirokazu KATO, Masaaki YAMAGUCHI
  • Patent number: 8370866
    Abstract: Provided is a high-accuracy optical pickup supporting device by fixing guide shafts to a chassis by use of adjustment screws accurately. To this end, in the optical pickup supporting device, an end portion of a second guide shaft for supporting an optical pickup device is fixed to the chassis by use of: a coil spring included in an accommodation area of the chassis; and an adjustment screw. In addition, the adjustment screw is screwed to a fixation plate accommodated in an accommodation part of the chassis. Accordingly, a repulsive force produced by the coil spring does not concentrate on any part of the chassis. For this reason, the chassis is prevented from deforming and breaking due to this repulsive force.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: February 5, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takeshi Aoki, Hisayuki Itoh, Hidetoshi Akimoto, Masao Honda
  • Publication number: 20110258646
    Abstract: Provided is a low-cost, high-accuracy optical pickup supporting device by simplifying a structure for fixing guide shafts to a chassis. To this end, an optical pickup supporting device includes: a frame-shaped chassis; a first guide shaft and a second guide shaft, two ends of each of which are fixed to the chassis; an optical pickup device movably supported by the two guide shafts; and a spindle motor fixed to the chassis with a motor supporting member interposed in between. Furthermore, in a first fixation region in which the first guide shaft is fixed to the chassis, the position of the first guide shaft is fixed with higher accuracy by: a fixation area obtained by protruding parts of the chassis; and a position regulating portion which is a part of the motor supporting member.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 20, 2011
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Takeshi AOKI, Hisayuki Itoh
  • Publication number: 20110258648
    Abstract: Provided is a high-accuracy optical pickup supporting device by fixing guide shafts to a chassis by use of adjustment screws accurately. To this end, in the optical pickup supporting device, an end portion of a second guide shaft for supporting an optical pickup device is fixed to the chassis by use of: a coil spring included in an accommodation area of the chassis; and an adjustment screw. In addition, the adjustment screw is screwed to a fixation plate accommodated in an accommodation part of the chassis. Accordingly, a repulsive force produced by the coil spring does not concentrate on any part of the chassis. For this reason, the chassis is prevented from deforming and breaking due to this repulsive force.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 20, 2011
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Takeshi AOKI, Hisayuki Itoh, Hidetoshi Akimoto, Masao Honda
  • Patent number: 4994224
    Abstract: An injection molding device and a method for manufacturing a foil decorated molding use a first half of a mold and a second half of a mold with a transfer foil having a transfer layer on a substrate film transported into a space between the first half of the mold and the second half of the mold. A heating and removing device has a heating device and a molding removal device moved into the space to hold, with the removal device, a molding attached temporarily to the first half of the mold, and to heat the foil at the side of the second half of the mold with the heating device. When the first and second halves of the mold are closed, the heating and removing device is moved outside the space to remove the molding from the removal device.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: February 19, 1991
    Assignee: Nissha Printing Co., Ltd.
    Inventors: Hisayuki Itoh, Yuzou Nakamura, Noriaki Higuchi, Seiichi Yamasaki