Patents Assigned to Toyota Kogyo Kabushiki Kaisha
  • Patent number: 10480430
    Abstract: An intake pipe of an evaporated fuel processing device is provided with a throttle valve downstream of a supercharger, and an ejector in parallel to the supercharger. A purge passage is branched into first and second branch passages, which connect to the intake pipe at a position downstream of the throttle valve and to a suction port of the ejector, respectively. In the ejector, its intake port is connected to the intake pipe at a position between the supercharger and the throttle valve, and its exhaust port is connected to the intake pipe at a position upstream of the supercharger. A flow rate of purge gas in the second branch passage is obtained based on at least two of a first pressure downstream of the throttle valve, a second pressure between the supercharger and the throttle valve, and a third pressure upstream of the supercharger.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 19, 2019
    Assignees: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidetoshi Tsutsumi, Tatsuhiko Akita, Yuusaku Nishimura
  • Patent number: 10439247
    Abstract: A fuel cell stack comprises a stacked body, an end plate and a case configured such that the stacked body is placed therein. The end plate is arranged to cover an end face of the stacked body in a stacking direction and an end face of the case in the stacking direction and is fastened to the end face of the case. A placement groove is formed in at least one surface out of two surfaces of the end plate and the case opposed to each other, such that a seal member is placed in the placement groove. The end plate includes a resin layer formed to continuously cover an inner circumferential wall surface of the fluid flow path hole, a surface of the end plate opposed to the stacked body, and an outer circumferential side end of the placement groove.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: October 8, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd., Toyoda Gosei Co., Ltd.
    Inventors: Tatsuhiko Shimizu, Hitoshi Hamada, Tatsuya Tokumasu, Tadanobu Ota, Yoshiki Nakamura
  • Publication number: 20190301380
    Abstract: An evaporative fuel treating apparatus includes: a canister; a vapor passage configured to cause a fuel tank to communicate with the canister; a closure valve including a valve disc arranged in the vapor passage and a stepping motor configured to open and close the valve disc; and a control device configured to control the closure valve. The control device is configured, in opening the valve disc to perform a pressure relief operation of the fuel tank, to: execute a flow rate estimation processing that calculates an estimated flow rate of gas passing through the closure valve, based on the absolute value of the amount of change of in-tank pressure of the fuel tank and a space volume inside the fuel tank; and execute a motor control processing that controls the number of steps of the stepping motor such that the estimated flow rate approaches a required flow rate.
    Type: Application
    Filed: February 19, 2019
    Publication date: October 3, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Keita FUKUI, Makoto YAMAZAKI, Makoto TAKANO, Tomohiro ITOH, Yoshikazu MIYABE
  • Patent number: 10406934
    Abstract: A fuel cell system for a vehicle for preventing intrusion of water in a relief valve without providing a casing or a waterproof sheet for the relief valve is provided. The fuel cell system comprises a fuel cell stack placed in a front room of a vehicle, a power control unit to perform output control of the fuel cell stack, a hydrogen supply path for supplying hydrogen gas to the fuel cell stack, and the relief valve provided in half way of the hydrogen supply path. The relief valve is placed above the fuel cell stack in the front room and includes an exhaust port. The exhaust port is placed facing an upper surface of a casing of the power control unit with a clearance such that the hydrogen gas is ejected downward through the exhaust port in the direction of gravity.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: September 10, 2019
    Assignees: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobutaka Teshima, Kei Enomoto
  • Publication number: 20190271313
    Abstract: A vane pump in which noise can be suppressed is provided. A vane pump (1) includes: a housing (2) having a peripheral wall portion (200), a bottom wall portion (201), and a pump chamber (A); a rotor (3) disposed in the pump chamber (A) to be rotatable; a vane (4) disposed to be slidable in the radial direction with respect to the rotor (3) and partitioning the pump chamber (A) into working chambers (A1, A2); and a reed valve (5) that opens and closes a discharge hole (201a) of the bottom wall portion (201). A position at which the sliding direction of the vane (4) with respect to the rotor (3) is inverted from outward in the radial direction to inward is defined as a reference position (?1), and a section of the pump chamber (A) on the discharge hole (201a) side with respect to the reference position (?1) is defined as a discharge section (AD).
    Type: Application
    Filed: October 30, 2017
    Publication date: September 5, 2019
    Applicants: TAIHO KOGYO Co., Ltd., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji SUZUKI, Akihiro UTO, Naoyuki MIYARA, Hiroki HARA, Shinsuke KIYOMIYA, Akira FUJII
  • Patent number: 10400688
    Abstract: An evaporated fuel processing apparatus is provided with an initializer configured to increase a step number with which a stepping motor is rotated in a valve closing direction, when there is an initialization request for the blocking valve and tank pressure of the fuel tank is in a predetermined pressure range near atmospheric pressure, in comparison with when the tank pressure is out of the predetermined pressure range.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: September 3, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Keita Fukui, Makoto Yamazaki, Yoshikazu Miyabe
  • Publication number: 20190226366
    Abstract: A control device controls an internal combustion engine including: an elastic wave sensor arranged and configured to output a signal responsive to the strength of an acoustic emission wave produced at a sliding portion; and a variable oil pump. The control device is configured to execute an oil pressure control such that the oil pressure approaches a target oil pressure according to an engine operating condition. This oil pressure control includes a first pressure-increase processing executed where an AE correlation value correlated with the strength or occurrence frequency of the acoustic emission wave detected by the elastic wave sensor is greater than a first threshold value. The first pressure-increase processing increases the target oil pressure associated with a first engine operating condition present when the AE correlation value becomes greater than the first threshold value, as compared to when the AE correlation value is not greater than that.
    Type: Application
    Filed: January 4, 2019
    Publication date: July 25, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., Ltd.
    Inventors: Yusuke MORITA, Motoichi MURAKAMI, Takeshi FUKUI, Yuichiro KAJIKI, Katsuhiro ASHIHARA, Alan HASE, Takashi IZUMI
  • Publication number: 20190186533
    Abstract: A slide surface of a thrust bearing includes a planar portion, a taper portion, and a pocket portion. The pocket portion includes a bottom surface, a first side surface, and a second side surface. The first side surface is formed on the side of the taper portion. The second side surface is formed on a side opposed to the first side surface. A depth from the plane of the planar portion to the thinnest portion of the taper portion is between 10 ?m and 80 ?m. A first angle that is an angle between a virtual surface obtained by extending the bottom surface and the second side surface is between 90° and 120°. And a second angle that is an angle between a virtual surface obtained by extending the first side surface and the tapered surface is between 60° and 120°.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 20, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Yuta UEMATSU, Takashi KOYAMA, Tsutomu KUBOTA, Tadashi NAMBA
  • Patent number: 10294987
    Abstract: A bearing device includes a thrust bearing. The thrust bearing has a bearing surface in a half-split ring shape, and a plurality of oil grooves formed to cross the bearing surface from an inner circumferential side to an outer circumferential side. Further, the thrust bearing includes a first thrust bearing that is disposed on a side surface facing a side of a transmission, and a second thrust bearing that is disposed on a side surface facing an opposite side to the transmission. In the first thrust bearing, a bearing surface between the plurality of oil grooves is configured by including a taper surface formed so that a wall thickness becomes thicker toward a rotation direction of the crankshaft. Further, in the second thrust bearing, a bearing surface between the plurality of oil grooves is configured by a plane in which a wall thickness is constant.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: May 21, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd.
    Inventors: Takashi Koyama, Yuta Uematsu, Tsutomu Kubota
  • Patent number: 4143370
    Abstract: An improvement of a vehicle collision anticipating method and device using transmitted and reflected frequency-modulated continuous waves is provided. A low frequency wave is produced by mixing a part of transmitted wave and a reflected wave from the object. The low frequency wave and a Doppler signal obtained from the low frequency wave are signal processed so as to generate signals. A predetermined distance range is obtained by multiplying a time which is determined by the distance between the vehicle and object and the velocity of said object with respect to the vehicle obtained from the Doppler signal, by a relative velocity of the object with respect to the vehicle. A collision of the object against the vehicle is anticipated by detecting the object entering the predetermined distance range in front of the vehicle.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: March 6, 1979
    Assignees: Toyota Kogyo Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Teruo Yamanaka, Takayuki Kato, Osamu Ozeki, Kazuo Sato, Minoru Bito