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).
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Patent number: 11499510Abstract: 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: GrantFiled: July 15, 2020Date of Patent: November 15, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Ichikawa, Hisayuki Itoh, Hirokazu Kato, Masaaki Yamaguchi
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Patent number: 11359586Abstract: 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: GrantFiled: August 11, 2020Date of Patent: June 14, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisayuki Itoh, Koji Ichikawa, Hirokazu Kato, Masaaki Yamaguchi
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Patent number: 11035324Abstract: 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: GrantFiled: August 19, 2020Date of Patent: June 15, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisayuki Itoh, Koji Ichikawa, Masaaki Yamaguchi, Hirokazu Kato
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Publication number: 20210123396Abstract: 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: ApplicationFiled: August 11, 2020Publication date: April 29, 2021Inventors: Hisayuki ITOH, Koji ICHIKAWA, Hirokazu KATO, Masaaki YAMAGUCHI
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Publication number: 20210123397Abstract: 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: ApplicationFiled: September 2, 2020Publication date: April 29, 2021Inventors: Hisayuki ITOH, Koji ICHIKAWA, Hirokazu KATO, Masaaki YAMAGUCHI
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Publication number: 20210115882Abstract: 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: ApplicationFiled: August 19, 2020Publication date: April 22, 2021Inventors: Hisayuki ITOH, Koji ICHIKAWA, Masaaki YAMAGUCHI, Hirokazu KATO
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Publication number: 20210115881Abstract: 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: ApplicationFiled: July 15, 2020Publication date: April 22, 2021Inventors: Koji ICHIKAWA, Hisayuki ITOH, Hirokazu KATO, Masaaki YAMAGUCHI
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Patent number: 8370866Abstract: 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: GrantFiled: April 13, 2011Date of Patent: February 5, 2013Assignee: SANYO Electric Co., Ltd.Inventors: Takeshi Aoki, Hisayuki Itoh, Hidetoshi Akimoto, Masao Honda
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Publication number: 20110258646Abstract: 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: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Applicant: SANYO Electric Co., Ltd.Inventors: Takeshi AOKI, Hisayuki Itoh
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Publication number: 20110258648Abstract: 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: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Applicant: SANYO Electric Co., Ltd.Inventors: Takeshi AOKI, Hisayuki Itoh, Hidetoshi Akimoto, Masao Honda
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Patent number: 4994224Abstract: 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: GrantFiled: March 16, 1989Date of Patent: February 19, 1991Assignee: Nissha Printing Co., Ltd.Inventors: Hisayuki Itoh, Yuzou Nakamura, Noriaki Higuchi, Seiichi Yamasaki