Patents by Inventor Yutaka Sawada

Yutaka Sawada 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: 11923573
    Abstract: A freight vehicle has a loading space, on which freight is loaded, rearward of a vehicle cabin in which an occupant rides. The freight vehicle includes a fuel cell mounted below the vehicle cabin and functioning as an electric power source, a storage portion disposed between the vehicle cabin and the loading space, and a tank disposed in the storage portion and stores fuel gas that is supplied to the fuel cell, and a radiator installed in the storage portion and performs heat exchange between air and a coolant that is supplied to the fuel cell.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: March 5, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yutaka Sawada, Yukihide Yokoyama, Yuichi Yagami
  • Patent number: 11835009
    Abstract: A hydrogen discharge control system controls a hydrogen discharge flow rate in a hydrogen engine vehicle that discharges hydrogen from a hydrogen tank in which a resin liner is laminated on an inner wall, to a hydrogen engine, in accordance with an accelerator operation amount. The hydrogen discharge control system comprises a control device. The control device estimates a temperature attained in the hydrogen tank after a predetermined time elapses with the accelerator operation amount at a maximum during an on operation of an accelerator, based on a temporal temperature gradient in the hydrogen tank and a temperature in the hydrogen tank, and when the temperature attained is no higher than a first predetermined temperature, performs discharge limit control for limiting a maximum value of the hydrogen discharge flow rate from the hydrogen tank to a predetermined flow rate.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: December 5, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoaki Ito, Yutaka Sawada, Toshihisa Tanaka
  • Publication number: 20230102981
    Abstract: A hydrogen discharge control system controls a hydrogen discharge flow rate in a hydrogen engine vehicle that discharges hydrogen from a hydrogen tank in which a resin liner is laminated on an inner wall, to a hydrogen engine, in accordance with an accelerator operation amount. The hydrogen discharge control system comprises a control device. The control device estimates a temperature attained in the hydrogen tank after a predetermined time elapses with the accelerator operation amount at a maximum during an on operation of an accelerator, based on a temporal temperature gradient in the hydrogen tank and a temperature in the hydrogen tank, and when the temperature attained is no higher than a first predetermined temperature, performs discharge limit control for limiting a maximum value of the hydrogen discharge flow rate from the hydrogen tank to a predetermined flow rate.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 30, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoaki Ito, Yutaka Sawada, Toshihisa Tanaka
  • Patent number: 11411239
    Abstract: A fuel cell system includes at least one pressure reducing valve connected to a downstream side of a hydrogen gas tank, a hydrogen gas flow path including a first flow path connected to a downstream side of the pressure reducing valve and a plurality of second flow paths connected to a downstream side of the first flow path and branched from the first flow path, a plurality of injector units, each of which is connected to each of the second flow paths, a plurality of fuel cell stacks, each of which is connected to each of the injector units, and a control unit controlling opening and closing of the injector units. The control unit sets valve closing periods of the injector units to periods deviating from each other such that at least one of the injector units is always opened when the fuel cell system satisfies a predetermined operating condition.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: August 9, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yutaka Sawada, Yukihide Yokoyama
  • Patent number: 11124062
    Abstract: A fuel cell vehicle is a fuel cell vehicle configured to support a fuel tank including a cylindrical part extending in a longitudinal direction thereof, the fuel cell vehicle including vehicle body frames, and a tank frame. The vehicle body frames extend in the longitudinal direction between a front tire and a rear tire. The tank frame includes at least a fixing part fixed to the vehicle body frames, and a supporting part configured to support the fuel tank by extending in an outward and downward direction of the vehicle body frames, and coming into contact with the fuel tank below a lower end of the vehicle body frames and above a lowermost part of the cylindrical part.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: September 21, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yutaka Sawada
  • Publication number: 20210244981
    Abstract: To suppress the influence of gas on other fuel tanks when the gas is discharged from a fuel tank. A fuel storage device includes: a plurality of fuel tanks, each having a fusible plug valve; a support member that supports the plurality of fuel tanks, while making longitudinal directions of the respective fuel tanks parallel to each other; and a blocking member that blocks at least part of the fuel gas discharged from the fusible plug valves. The plurality of fuel tanks includes a tank group including the plurality of fuel tanks aligned along a first direction and a juxtaposed tank thereto. The blocking member is disposed between the tank group and the juxtaposed tank. The orientations of openings of the fusible plug valves included in blocked tanks are directed toward the blocking member, the blocked tanks being two or more fuel tanks that are continuous in the first direction, among the fuel tanks included in the tank group.
    Type: Application
    Filed: February 2, 2021
    Publication date: August 12, 2021
    Inventor: Yutaka SAWADA
  • Publication number: 20210221223
    Abstract: A vehicle includes a plurality of fuel tanks in which fuel is stored, and a fuel consuming unit that is connected to the fuel tanks and that consumes the fuel supplied from the fuel tanks to obtain a driving force of the vehicle. The fuel tanks are arranged such that a longitudinal direction of the fuel tanks extends along a height direction of the vehicle.
    Type: Application
    Filed: October 6, 2020
    Publication date: July 22, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yutaka SAWADA, Yukihide YOKOYAMA
  • Publication number: 20210159525
    Abstract: A fuel cell system includes at least one pressure reducing valve connected to a downstream side of a hydrogen gas tank, a hydrogen gas flow path including a first flow path connected to a downstream side of the pressure reducing valve and a plurality of second flow paths connected to a downstream side of the first flow path and branched from the first flow path, a plurality of injector units, each of which is connected to each of the second flow paths, a plurality of fuel cell stacks, each of which is connected to each of the injector units, and a control unit controlling opening and closing of the injector units. The control unit sets valve closing periods of the injector units to periods deviating from each other such that at least one of the injector units is always opened when the fuel cell system satisfies a predetermined operating condition.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 27, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yutaka SAWADA, Yukihide YOKOYAMA
  • Publication number: 20210129688
    Abstract: A freight vehicle includes a chassis, a body portion having therein a vehicle cabin in which an occupant rides and supported by a front end of the chassis, a tilt mechanism that is provided on the chassis and that tilts the body portion with respect to the chassis, a tank that is disposed on the body portion and stores gas, a gas consuming unit that is supported by the chassis and supplied with the gas to consume the gas, and a pipe that connects the tank and the gas consuming unit and through which the gas flows. At least a part of the pipe is composed of a flexible pipe having a first end fixed to the body portion and a second end fixed to the chassis.
    Type: Application
    Filed: October 15, 2020
    Publication date: May 6, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yutaka SAWADA, Yukihide YOKOYAMA
  • Publication number: 20210135255
    Abstract: A freight vehicle has a loading space, on which freight is loaded, rearward of a vehicle cabin in which an occupant rides. The freight vehicle includes a fuel cell mounted below the vehicle cabin and functioning as an electric power source, a storage portion disposed between the vehicle cabin and the loading space, and a tank disposed in the storage portion and stores fuel gas that is supplied to the fuel cell, and a radiator installed in the storage portion and performs heat exchange between air and a coolant that is supplied to the fuel cell.
    Type: Application
    Filed: November 3, 2020
    Publication date: May 6, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yutaka SAWADA, Yukihide YOKOYAMA, Yuichi YAGAMI
  • Patent number: 10780777
    Abstract: A vehicle comprises a tank that is placed behind a front component in a front-rear direction of the vehicle and that is arranged such that a longitudinal direction of the tank is along the front-rear direction; and a fixation member configured to fix the tank to a vehicle body of the vehicle. The front component and the tank are arranged to at least partly overlap with each other when the vehicle is viewed from a forward direction side. The fixation member releases fixation of the tank to the vehicle body when the front component comes into contact with the tank to apply an external force along the longitudinal direction that is equal to or greater than a predetermined value, to the tank.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: September 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yutaka Sawada
  • Publication number: 20200280080
    Abstract: The fuel cell system according to the present disclosure includes: a pressure reducing valve provided in a fuel supply pipe constituting a flow path for a fuel gas between main stop valves and injectors; a high-pressure communication pipe provided so as to communicate a first flow path with a second flow path, the first and the second flow paths being the fuel supply pipes serving as flow paths for the fuel gases sent from fuel gas tank units among the fuel supply pipes upstream of the pressure reducing valve, respectively; and a low-pressure communication pipe provided so as to communicate a third flow path with a fourth flow path, the third and the fourth flow paths being the fuel supply pipes serving as flow paths for the fuel gases supplied to fuel cell stacks among the fuel supply pipes downstream of the pressure reducing valve, respectively.
    Type: Application
    Filed: January 8, 2020
    Publication date: September 3, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukihide YOKOYAMA, Yutaka SAWADA
  • Publication number: 20200247234
    Abstract: A fuel cell vehicle is a fuel cell vehicle configured to support a fuel tank including a cylindrical part extending in a longitudinal direction thereof, the fuel cell vehicle including vehicle body frames, and a tank frame. The vehicle body frames extend in the longitudinal direction between a front tire and a rear tire. The tank frame includes at least a fixing part fixed to the vehicle body frames, and a supporting part configured to support the fuel tank by extending in an outward and downward direction of the vehicle body frames, and coming into contact with the fuel tank below a lower end of the vehicle body frames and above a lowermost part of the cylindrical part.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 6, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yutaka SAWADA
  • Publication number: 20180326842
    Abstract: A vehicle comprises a tank that is placed behind a front component in a front-rear direction of the vehicle and that is arranged such that a longitudinal direction of the tank is along the front-rear direction; and a fixation member configured to fix the tank to a vehicle body of the vehicle. The front component and the tank are arranged to at least partly overlap with each other when the vehicle is viewed from a forward direction side. The fixation member releases fixation of the tank to the vehicle body when the front component comes into contact with the tank to apply an external force along the longitudinal direction that is equal to or greater than a predetermined value, to the tank.
    Type: Application
    Filed: April 13, 2018
    Publication date: November 15, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yutaka SAWADA
  • Patent number: 6713033
    Abstract: A process for the production of a highly chemically stable hydrophilic ODS packing material made of silica gel for liquid chromatography that causes hardly any peak tailing. ODS groups are chemically bonded to a silica gel having a specific surface area of 200 to 300 m2/g, which is then subjected once or twice to end capping including high temperature end capping so as to efficiently remove or deactivate active silanol groups.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: March 30, 2004
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Yoshihiro Sakai, Yutaka Sawada, Norihiro Omori, Suzue Ota
  • Publication number: 20020032122
    Abstract: A process for the production of a highly chemically stable hydrophilic ODS packing material made of silica gel for liquid chromatography that causes hardly any peak tailing. ODS groups are chemically bonded to a silica gel having a specific surface area of 200 to 300 m2/g, which is then subjected once or twice to end capping including high temperature end capping so as to efficiently remove or deactivate active silanol groups.
    Type: Application
    Filed: July 3, 2001
    Publication date: March 14, 2002
    Applicant: Kanto Kagaku Kabushiki Kaisha
    Inventors: Yoshihiro Sakai, Yutaka Sawada, Norihiro Omori, Suzue Ota
  • Patent number: 6128263
    Abstract: The present invention provides a superior external storage device that can relay data concerning its mute state to an external apparatus, and a superior information processing apparatus that can be connected to such an external device.The external storage device determines whether currently retrieved data from a storage medium are audio data or computer data, and notifies the information processing apparatus of the muted state when the retrieved data are computer data. The notification of the muted state may be performed by, for example, loading a mute signal to the motherboard of the information processing apparatus through an interface connector. As a result, the information processing apparatus can accurately identify the mute period of the external storage device, and accordingly, can precisely disable the sound function (e.g., an audio amplifier or a mixer in an audio controller) and switch it to the power saving state.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: October 3, 2000
    Assignee: International Business Machines Corporation
    Inventors: Kazuo Fujii, Yutaka Sawada, Takashi Sugawara
  • Patent number: 5659762
    Abstract: A method and device for rapidly restarting a computer system expansion device from a power save mode. The expansion device comprises a central processor for controlling the operation of the expansion device; a first memory, which is volatile, used as a working area by the central processor in handling tasks; interface for communicating with the computer system; power supply to each element in the expansion device; and a second memory, which is non-volatile and write-enable, for saving the context information held by the interface and the data stored in a first memory, in response to a request from the computer system via the interface.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: August 19, 1997
    Assignee: International Business Machines Corporation
    Inventors: Yutaka Sawada, Shuichi Iwata, Mitsuhiko Aoyagi
  • Patent number: D372022
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: July 23, 1996
    Assignee: International Business Machines Corporation
    Inventors: Yutaka Sawada, Shuichi Iwata, Mitsuhiko Aoyagi, Koichi Takado
  • Patent number: D372228
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: July 30, 1996
    Assignee: International Business Machines Corporation
    Inventors: Yutaka Sawada, Shuichi Iwata, Mitsuhiko Aoyagi, Koichi Takado