Patents by Inventor Takatsugu Koyama

Takatsugu Koyama 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: 10788161
    Abstract: A high pressure tank apparatus includes a high pressure tank, a leaked fluid container, and a supply/discharge side discharge flow path. The high pressure tank includes a liner made of resin, a reinforced layer that covers an outer surface of the liner, an insertion member that has formed therein a supply/discharge hole capable of communicating with an inside of the liner and the supply/discharge flow path; and a supply/discharge side cap in which are formed an insertion hole through which the insertion member is inserted and a supply/discharge side draw-out hole that draws out the fluid interposed between the liner and the reinforced layer. The supply/discharge side discharge flow path guides a temporarily released fluid that is the fluid drawn out via the supply/discharge side draw-out hole to a discharge region.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 29, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Naoki Ogiwara, Takatsugu Koyama, Toshihiko Kanezaki, Jin Nishio
  • Publication number: 20200223317
    Abstract: A vehicle is provided with an interior chamber apart from a passenger compartment, and a container chamber in which a high pressure gas container is accommodated. A heat generating body is accommodated in the interior chamber. Further, in the vehicle, there are formed introduction ports through which atmospheric air is introduced into the interior chamber, a communication passage that enables communication between the interior chamber and the container chamber, and a lead-out port through which the atmospheric air is led out from the container chamber. The atmospheric air that is introduced into the interior chamber through the introduction ports flows into the container chamber via the communication passage, and furthermore, is led out to the exterior of the container chamber from the lead-out port.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 16, 2020
    Inventors: Satoru KAWASE, Naoki OGIWARA, Toshihiko KANEZAKI, Takatsugu KOYAMA
  • Patent number: 10641433
    Abstract: A high pressure tank of a high pressure tank apparatus includes: a resin-made liner; a reinforced layer covering an outer surface of the liner; and a supplying/discharging hole to which a supplying/discharging flow path is connected via a connecting section. A storage section is capable of storing a leaked fluid that has leaked from the connecting section and a temporary release fluid that has been led out from between the liner and the reinforced layer. A control section, when an internal pressure detection value of the high pressure tank due to a pressure sensor is greater than a threshold value, judges whether the leaked fluid has occurred, based on a detection result of a sensor detecting a concentration of a hydrogen gas inside the storage section, and otherwise does based on a detection result of the pressure sensor.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 5, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Naoki Ogiwara, Takatsugu Koyama, Toshihiko Kanezaki
  • Publication number: 20190277451
    Abstract: A high pressure tank apparatus includes a high pressure tank, a leaked fluid container, and a supply/discharge side discharge flow path. The high pressure tank includes a liner made of resin, a reinforced layer that covers an outer surface of the liner, an insertion member that has formed therein a supply/discharge hole capable of communicating with an inside of the liner and the supply/discharge flow path; and a supply/discharge side cap in which are formed an insertion hole through which the insertion member is inserted and a supply/discharge side draw-out hole that draws out the fluid interposed between the liner and the reinforced layer. The supply/discharge side discharge flow path guides a temporarily released fluid that is the fluid drawn out via the supply/discharge side draw-out hole to a discharge region.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Naoki OGIWARA, Takatsugu KOYAMA, Toshihiko KANEZAKI, Jin NISHIO
  • Publication number: 20190277453
    Abstract: A high pressure tank of a high pressure tank apparatus includes: a resin-made liner; a reinforced layer covering an outer surface of the liner; and a supplying/discharging hole to which a supplying/discharging flow path is connected via a connecting section. A storage section is capable of storing a leaked fluid that has leaked from the connecting section and a temporary release fluid that has been led out from between the liner and the reinforced layer. A control section, when an internal pressure detection value of the high pressure tank due to a pressure sensor is greater than a threshold value, judges whether the leaked fluid has occurred, based on a detection result of a sensor detecting a concentration of a hydrogen gas inside the storage section, and otherwise does based on a detection result of the pressure sensor.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Naoki OGIWARA, Takatsugu KOYAMA, Toshihiko KANEZAKI
  • Publication number: 20190275882
    Abstract: A high pressure tank of a high pressure tank apparatus includes: a resin-made liner storing a fuel gas to be supplied to a fuel cell; a reinforced layer covering an outer surface of the liner; an inserting member having formed therein a supplying/discharging hole; and a supplying/discharging-side cap having formed therein a supplying/discharging-side lead-out hole. There is a leaked fluid storage section capable of storing a leaked fluid that has leaked from at least a connecting section connecting the supplying/discharging hole and a supplying/discharging flow path. There is a supplying/discharging-side discharge flow path provided independently from the leaked fluid storage section and by which a temporary release fluid that has been led out via the supplying/discharging-side lead-out hole is led to a diluting unit that dilutes an anode off-gas that has been discharged from the fuel cell.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Naoki OGIWARA, Toshihiko KANEZAKI, Takatsugu KOYAMA
  • Publication number: 20170331130
    Abstract: A method for controlling a fuel cell vehicle including a fuel cell to generate electric power via an electrochemical reaction between fuel gas and oxidant gas, the method includes determining whether the fuel cell vehicle is in a fuel supply state in which the fuel gas is supplied from an outside of the fuel cell vehicle into a fuel storage chamber via a filling lid box of the fuel cell vehicle. It is determined that the fuel gas does not leak, even if a fuel gas detector provided in the filling lid box detects the fuel gas when the fuel cell vehicle is in the fuel supply state.
    Type: Application
    Filed: April 20, 2017
    Publication date: November 16, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Satoru KAWASE, Koichi TAKAKU, Takatsugu KOYAMA
  • Patent number: 8965631
    Abstract: A control specifications changing system includes a control specifications data server and a specifications changeable vehicle. The control specifications data server includes a second communication device and a determining device. The second communication device is configured to communicate with the specifications changeable vehicle. The determining device is configured to determine data for changing specifications upon receipt of first vehicle information data from the specifications changeable vehicle through the second communication device. The data for changing specifications includes data for use in changing control specifications of the specifications changeable vehicle to control specifications suited for the received first vehicle information data. The determining device is configured to transmit the determined data for changing specifications to the specifications changeable vehicle through the second communication device.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: February 24, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takatsugu Koyama, Chihiro Wake
  • Patent number: 8936885
    Abstract: A fuel cell system includes a fuel cell formed by stacking a plurality of power generation cells, and an oxygen-containing gas supply apparatus for supplying an oxygen-containing gas to the fuel cell. The oxygen-containing gas supply apparatus includes an oxygen-containing gas supply channel connected to an oxygen-containing gas inlet of the fuel cell for allowing the oxygen-containing gas to flow from an air pump into the oxygen-containing gas inlet, a branch supply channel branched from the oxygen-containing gas supply channel and which is opened to the inside of a fuel cell chamber, an oxygen-containing gas discharge channel for discharging an oxygen-containing off gas from the fuel cell, and an oxygen-containing off gas circulation channel one end of which is connected to the oxygen-containing gas discharge channel, and another end of which is connected to the oxygen-containing gas supply channel at a position upstream from the air pump.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: January 20, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Mitsunori Matsumoto, Takatsugu Koyama
  • Publication number: 20140297108
    Abstract: A control specifications changing system includes a control specifications data server and a specifications changeable vehicle. The control specifications data server includes a second communication device and a determining device. The second communication device is configured to communicate with the specifications changeable vehicle. The determining device is configured to determine data for changing specifications upon receipt of first vehicle information data from the specifications changeable vehicle through the second communication device. The data for changing specifications includes data for use in changing control specifications of the specifications changeable vehicle to control specifications suited for the received first vehicle information data. The determining device is configured to transmit the determined data for changing specifications to the specifications changeable vehicle through the second communication device.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takatsugu KOYAMA, Chihiro WAKE
  • Patent number: 8663860
    Abstract: Disclosed is a fuel cell system which includes a fuel cell having an anode and a cathode and for producing electricity through reaction between the fuel gas and the oxidant gas, a fuel gas supply path through which the fuel gas passes, an oxidant gas supply path through which the oxidant gas passes, a voltage sensing device for detecting voltage produced by the fuel cell during power generation, and a decision device for determining whether or not cross leakage occurs between the anode and the cathode of the fuel cell, based on voltage information sent from the voltage sensing device. Moreover, the decision device determines that the cross leakage occurs between the anode and the cathode, if the voltage produced by the fuel cell is less than a predetermined value during the power generation.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: March 4, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takatsugu Koyama, Mitsunori Matsumoto, Akio Yamamoto, Hiroyuki Tanaka, Seiji Tonegawa, Nobutaka Nakajima, Shinjiro Morita
  • Patent number: 8338046
    Abstract: The fuel cell system includes: a fuel cell stack which is supplied with reaction gas, and performs electricity generation; a reaction gas supplier which supplies the reaction gas to the fuel cell stack; a ground fault detector which detects a ground fault from the fuel cell stack; and a reaction gas increasing member which increases an amount of a reaction gas supply to the fuel cell stack, when the ground fault is detected by the ground fault detector.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: December 25, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuyoshi Miyajima, Takatsugu Koyama, Kuniaki Ojima
  • Publication number: 20120301798
    Abstract: A fuel cell system includes a fuel cell formed by stacking a plurality of power generation cells, and an oxygen-containing gas supply apparatus for supplying an oxygen-containing gas to the fuel cell. The oxygen-containing gas supply apparatus includes an oxygen-containing gas supply channel connected to an oxygen-containing gas inlet of the fuel cell for allowing the oxygen-containing gas to flow from an air pump into the oxygen-containing gas inlet, a branch supply channel branched from the oxygen-containing gas supply channel and which is opened to the inside of a fuel cell chamber, an oxygen-containing gas discharge channel for discharging an oxygen-containing off gas from the fuel cell, and an oxygen-containing off gas circulation channel one end of which is connected to the oxygen-containing gas discharge channel, and another end of which is connected to the oxygen-containing gas supply channel at a position upstream from the air pump.
    Type: Application
    Filed: May 24, 2012
    Publication date: November 29, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Mitsunori MATSUMOTO, Takatsugu KOYAMA
  • Publication number: 20120064427
    Abstract: The fuel cell system includes: a fuel cell stack which is supplied with reaction gas, and performs electricity generation; a reaction gas supplier which supplies the reaction gas to the fuel cell stack; a ground fault detector which detects a ground fault from the fuel cell stack; and a reaction gas increasing member which increases an amount of a reaction gas supply to the fuel cell stack, when the ground fault is detected by the ground fault detector.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuyoshi MIYAJIMA, Takatsugu KOYAMA, Kuniaki OJIMA
  • Patent number: 7914942
    Abstract: The fuel cell vehicle, includes a fuel cell generating electricity by an electrochemical reaction of hydrogen and oxygen; an accessory for the fuel cell; and a fuel cell system box mounted on a vehicle body and housing the fuel cell and the accessory, wherein the fuel cell system box is formed in a vessel shape which has a bottom wall, a first side wall, and a second side wall, the first side wall supporting at least one pipe through which a fluid supplied to the fuel cell flows, and the first side wall is constituted of a material having a specific gravity that is greater than that of the bottom wall and the second wall.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: March 29, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Kato, Makoto Anazawa, Takatsugu Koyama, Mitsunori Matsumoto, Masato Nakaarai
  • Publication number: 20090317674
    Abstract: The fuel cell system includes: a fuel cell stack which is supplied with reaction gas, and performs electricity generation; a reaction gas supplier which supplies the reaction gas to the fuel cell stack; a ground fault detector which detects a ground fault from the fuel cell stack; and a reaction gas increasing member which increases an amount of a reaction gas supply to the fuel cell stack, when the ground fault is detected by the ground fault detector.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 24, 2009
    Applicant: Honda Motor Co., Ltd.
    Inventors: Kazuyoshi Miyajima, Takatsugu Koyama, Kuniaki Ojima
  • Patent number: 7494730
    Abstract: An apparatus for cooling a fuel cell, which generates power by supplying air and a fuel gas, in which a cooling liquid is circulated between the fuel cell and a heat exchanger is disclosed. The cooling apparatus of the present invention separates the gas introduced into the cooling liquid, mixes the separated gas with the air supplied to or exhausted from the fuel cell, and then exhausts the gas.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: February 24, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Mitsuharu Imaseki, Yoshiro Shimoyama, Takatsugu Koyama, Teruaki Kawasaki, Akio Yamamoto
  • Patent number: 7371477
    Abstract: Hydrogen gas supplied to and then purged from a fuel cell is temporarily retained in a reservoir provided in an exhaust fuel diluter, and diluted before release into atmosphere. Cathode exhaust gas discharged from a cathode of the fuel cell is mixed to dilute the hydrogen gas, and air continues to be supplied to the cathode of the fuel cell for a specific period of time even after generation of electric power in the fuel cell is stopped, so that the hydrogen gas retained in the reservoir is continuously diluted with the cathode exhaust gas and released. Air for ventilation of the fuel cell may be used instead or in addition, to dilute and release the hydrogen gas retained in the reservoir after the generation of electric power in the fuel cell is stopped.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: May 13, 2008
    Assignee: Honda Motor Co., Ltd.
    Inventors: Akio Yamamoto, Kazunori Fukuma, Takatsugu Koyama, Hideo Numata, Masahiro Matsutani
  • Patent number: 7285351
    Abstract: An apparatus for dilution of discharged fuel of a fuel cell is provided, which has an inlet for guiding purged hydrogen gas coming from the fuel cell, a reservoir for storing the purged hydrogen gas guided through the inlet, and a cathode exhaust gas pipe penetrating the reservoir. The cathode exhaust gas pipe has a feature that it has holes inside the reservoir and is supplied with cathode exhaust gas of the fuel cell. Also the apparatus has a feature that the cathode exhaust gas pipe sucks the purged hydrogen gas stored in the reservoir through the holes and discharges the purged hydrogen gas diluted by mixing with the cathode exhaust gas.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: October 23, 2007
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akio Yamamoto, Kazunori Fukuma, Takatsugu Koyama, Hideo Numata, Masahiro Matsutani
  • Publication number: 20060286420
    Abstract: Disclosed is a fuel cell system which includes a fuel cell having an anode and a cathode and for producing electricity through reaction between the fuel gas and the oxidant gas, a fuel gas supply path through which the fuel gas passes, an oxidant gas supply path through which the oxidant gas passes, a voltage sensing device for detecting voltage produced by the fuel cell during power generation, and a decision device for determining whether or not cross leakage occurs between the anode and the cathode of the fuel cell, based on voltage information sent from the voltage sensing device. Moreover, the decision device determines that the cross leakage occurs between the anode and the cathode, if the voltage produced by the fuel cell is less than a predetermined value during the power generation.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 21, 2006
    Inventors: Takatsugu Koyama, Mitsunori Matsumoto, Akio Yamamoto, Hiroyuki Tanaka, Seiji Tonegawa, Nobutaka Nakajima, Shinjiro Morita