Patents by Inventor Takuya Hirai

Takuya Hirai 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: 11951806
    Abstract: A vehicle-mounted temperature controller 100 provided with a compressor 2 having a compression part 2a compressing a refrigerant and a drive motor 2b driving the compression part 2a and using waste heat accompanying driving of the compression part 2a to make the temperature of the refrigerant rise, a blower 61 blowing air to a heater core 145 raised in temperature by receiving heat of the refrigerant and blowing air exchanged in heat with the heater core 145 to the inside of the passenger compartment, and an electronic control unit 51 controlling a current phase of the drive motor 2b to a phase by which a ratio of change of an output of the drive motor 2b to a change of the current phase becomes relatively larger to thereby drive the drive motor 2b by an inefficient drive operation when the blower 61 is in a nondriven state and controlling the current phase to a phase by which a ratio of change of an output of the drive motor 2b to a change of the current phase becomes relatively smaller to thereby drive the
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: April 9, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Hirai, Hidefumi Aikawa, Yuji Miyoshi
  • Publication number: 20240113793
    Abstract: A purely-lateral position estimation unit (1603) estimates as an estimated purely-lateral position, when a disturbance wave to disturb communication performed in a train is generated while the train is traveling, a position existing in a purely-lateral direction with respect to a position of a generation source of the disturbance wave. A feature extraction unit (1604) extracts a feature of a measured reception power value being a reception power value measured in the train during a disturbance wave generation period wherein the disturbance wave has been generated.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 4, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuya MIURA, Hiroaki HIRAI, Toshiyuki KURIYAMA, Kosuke SHIMMYO, Katsuhiro KONDO
  • Patent number: 11555441
    Abstract: A cooling system for a hybrid vehicle that cools cooling medium for an air conditioner without reducing a driving performance, irrespective of a running condition. A detector detects data relating to operating conditions of a high-current device cooling circuit, a supercharger cooling circuit, a high-current device, an engine, a supercharger, and the hybrid vehicle. A controller selects one of a first water passage and a second water passage by manipulating a control valve based on the data collected by the detector, in such a manner as to maximize an amount of heat transferred from the cooling medium to high-current device cooling water or supercharger cooling water.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: January 17, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Sugihara, Takuya Hirai
  • Patent number: 11396227
    Abstract: A cooling apparatus of a vehicle driving system for driving a vehicle according to the invention activates a heat pump to cool a hybrid system by cooling medium and flows an engine cooling water in an engine water circulation passage through a condenser to cool the cooling medium by the engine cooling water at the condenser when an engine water circulation condition is satisfied. The engine water circulation condition is a condition that a heat pump activation condition is satisfied, and an engine cooling condition is not satisfied. The heat pump activation condition is a condition that a process of cooling the hybrid system by the cooling medium of the heat pump is requested. The engine cooling condition is a condition that a process of cooling an internal combustion engine by the engine cooling water is requested.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: July 26, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoichi Ogura, Kunihiko Hayashi, Masatoshi Yano, Yuji Miyoshi, Takuya Hirai, Tomohiro Shinagawa, Ryo Michikawauchi, Hidefumi Aikawa, Yu Ofune
  • Patent number: 11047285
    Abstract: A control apparatus of an internal combustion engine controls a heat exchange cooling water flow rate which is a flow rate of cooling water supplied to an exhaust heat recovery cooler apparatus, to a larger flow rate when the control apparatus executes an EGR control, and the exhaust heat recovery cooler apparatus performs an exhaust heat recovery function, than when the control apparatus executes the EGR control, and the exhaust heat recovery cooler apparatus does not perform the exhaust heat recovery function.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: June 29, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Hirai, Takashi Hotta, Yuji Miyoshi
  • Publication number: 20210101448
    Abstract: A vehicle-mounted temperature controller 100 provided with a compressor 2 having a compression part 2a compressing a refrigerant and a drive motor 2b driving the compression part 2a and using waste heat accompanying driving of the compression part 2a to make the temperature of the refrigerant rise, a blower 61 blowing air to a heater core 145 raised in temperature by receiving heat of the refrigerant and blowing air exchanged in heat with the heater core 145 to the inside of the passenger compartment, and an electronic control unit 51 controlling a current phase of the drive motor 2b to a phase by which a ratio of change of an output of the drive motor 2b to a change of the current phase becomes relatively larger to thereby drive the drive motor 2b by an inefficient drive operation when the blower 61 is in a nondriven state and controlling the current phase to a phase by which a ratio of change of an output of the drive motor 2b to a change of the current phase becomes relatively smaller to thereby drive the
    Type: Application
    Filed: September 29, 2020
    Publication date: April 8, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya HIRAI, Hidefumi AIKAWA, Yuji MIYOSHI
  • Patent number: 10906387
    Abstract: A cooling apparatus of a vehicle driving system of the invention connects an engine water circulation passage to a hybrid system water circulation passage and flows cooling water in the engine water circulation passage and the hybrid system water circulation passage to cool a first hybrid system component by the cooling water cooled by an engine radiator and cool a second hybrid system component by the cooling water cooled by a hybrid system radiator when an engine cooling process is not requested, a first hybrid system cooling process is requested, a second hybrid system cooling process is requested, and a connection condition is satisfied. The connection condition is satisfied when the engine cooling process is not requested, and the cooling water flowing into the hybrid system water circulation passage from the engine water circulation passage, can cool the first hybrid system component.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: February 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Hirai, Yuji Miyoshi, Tomohiro Shinagawa, Masatoshi Yano, Hiroyuki Sugihara, Ryo Michikawauchi, Kunihiko Hayashi, Yoichi Ogura, Hidefumi Aikawa, Yu Ofune
  • Patent number: 10865694
    Abstract: A cooling apparatus of a vehicle of the invention comprises an engine cooling system, a device cooling system, and a connection apparatus configured to connect an engine circulation circuit of the engine cooling system and a device circulation circuit of the device cooling system to each other such that heat exchanging liquid cooled by a device radiator of the device cooling system, is supplied to an engine passage formed in an internal combustion engine without flowing through a device passage formed in the device including at least one of a motor of the vehicle, a battery for storing electric power to be supplied to the motor, and a power control unit for controlling a supply of the electric power from the battery to the motor.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: December 15, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Sugihara, Tomohiro Shinagawa, Yuji Miyoshi, Takuya Hirai, Keisuke Tokai
  • Publication number: 20200248640
    Abstract: A control apparatus of an internal combustion engine controls a heat exchange cooling water flow rate which is a flow rate of cooling water supplied to an exhaust heat recovery cooler apparatus, to a larger flow rate when the control apparatus executes an EGR control, and the exhaust heat recovery cooler apparatus performs an exhaust heat recovery function, than when the control apparatus executes the EGR control, and the exhaust heat recovery cooler apparatus does not perform the exhaust heat recovery function.
    Type: Application
    Filed: November 1, 2019
    Publication date: August 6, 2020
    Inventors: Takuya HIRAI, Takashi HOTTA, Yuji MIYOSHI
  • Publication number: 20200088090
    Abstract: A cooling system for a hybrid vehicle that cools cooling medium for an air conditioner without reducing a driving performance, irrespective of a running condition. A detector detects data relating to operating conditions of a high-current device cooling circuit, a supercharger cooling circuit, a high-current device, an engine, a supercharger, and the hybrid vehicle. A controller selects one of a first water passage and a second water passage by manipulating a control valve based on the data collected by the detector, in such a manner as to maximize an amount of heat transferred from the cooling medium to high-current device cooling water or supercharger cooling water.
    Type: Application
    Filed: July 9, 2019
    Publication date: March 19, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki SUGIHARA, Takuya HIRAI
  • Publication number: 20200047605
    Abstract: A cooling apparatus of a vehicle driving system of the invention connects an engine water circulation passage to a hybrid system water circulation passage and flows cooling water in the engine water circulation passage and the hybrid system water circulation passage to cool a first hybrid system component by the cooling water cooled by an engine radiator and cool a second hybrid system component by the cooling water cooled by a hybrid system radiator when an engine cooling process is not requested, a first hybrid system cooling process is requested, a second hybrid system cooling process is requested, and a connection condition is satisfied. The connection condition is satisfied when the engine cooling process is not requested, and the cooling water flowing into the hybrid system water circulation passage from the engine water circulation passage, can cool the first hybrid system component.
    Type: Application
    Filed: April 16, 2019
    Publication date: February 13, 2020
    Inventors: Takuya HIRAI, Yuji MIYOSHI, Tomohiro SHINAGAWA, Masatoshi YANO, Hiroyuki SUGIHARA, Ryo MICHIKAWAUCHI, Kunihiko HAYASHI, Yoichi OGURA, Hidefumi AIKAWA, Yu OFUNE
  • Publication number: 20190329644
    Abstract: A cooling apparatus of a vehicle driving system for driving a vehicle according to the invention activates a heat pump to cool a hybrid system by cooling medium and flows an engine cooling water in an engine water circulation passage through a condenser to cool the cooling medium by the engine cooling water at the condenser when an engine water circulation condition is satisfied. The engine water circulation condition is a condition that a heat pump activation condition is satisfied, and an engine cooling condition is not satisfied. The heat pump activation condition is a condition that a process of cooling the hybrid system by the cooling medium of the heat pump is requested. The engine cooling condition is a condition that a process of cooling an internal combustion engine by the engine cooling water is requested.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 31, 2019
    Inventors: Yoichi OGURA, Kunihiko HAYASHI, Masatoshi YANO, Yuji MIYOSHI, Takuya HIRAI, Tomohiro SHINAGAWA, Ryo MICHIKAWAUCHI, Hidefumi AIKAWA, Yu OFUNE
  • Patent number: 10434867
    Abstract: A cooling apparatus of vehicle driving apparatuses of the invention controls flow of cooling water so as to cool engine cooling water by at least two radiators when a requested ability of cooling an internal combustion engine, is equal to or larger than a requested ability of cooling a hybrid device. The number of the radiators used for cooling the engine cooling water is larger than the number of the remaining radiator(s). The cooling apparatus controls the flow of the cooling water so as to cool device cooling water at least two radiators when the requested ability of cooling the hybrid device, is larger than the requested ability of cooling the internal combustion engine. The number of the radiators used for cooling the device cooling water is larger than the number of the remaining radiator(s).
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: October 8, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Miyoshi, Takuya Hirai, Tomohiro Shinagawa, Hiroyuki Sugihara
  • Publication number: 20190299770
    Abstract: A cooling apparatus of vehicle driving apparatuses of the invention controls flow of cooling water so as to cool engine cooling water by at least two radiators when a requested ability of cooling an internal combustion engine, is equal to or larger than a requested ability of cooling a hybrid device. The number of the radiators used for cooling the engine cooling water is larger than the number of the remaining radiator(s). The cooling apparatus controls the flow of the cooling water so as to cool device cooling water at least two radiators when the requested ability of cooling the hybrid device, is larger than the requested ability of cooling the internal combustion engine. The number of the radiators used for cooling the device cooling water is larger than the number of the remaining radiator(s).
    Type: Application
    Filed: February 7, 2019
    Publication date: October 3, 2019
    Inventors: Yuji MIYOSHI, Takuya HIRAI, Tomohiro SHINAGAWA, Hiroyuki SUGIHARA
  • Publication number: 20190234289
    Abstract: A cooling apparatus of a vehicle of the invention comprises an engine cooling system, a device cooling system, and a connection apparatus configured to connect an engine circulation circuit of the engine cooling system and a device circulation circuit of the device cooling system to each other such that heat exchanging liquid cooled by a device radiator of the device cooling system, is supplied to an engine passage formed in an internal combustion engine without flowing through a device passage formed in the device including at least one of a motor of the vehicle, a battery for storing electric power to be supplied to the motor, and a power control unit for controlling a supply of the electric power from the battery to the motor.
    Type: Application
    Filed: October 9, 2018
    Publication date: August 1, 2019
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Sugihara, Tomohiro Shinagawa, Yuji Miyoshi, Takuya Hirai, Keisuke Tokai
  • Patent number: 9920707
    Abstract: The container unit type cogeneration engine generator comprises a long generator container in which an engine and components on a generator main body side including a generator driven by the engine are accommodated, and a short exhaust heat utilizing container in which a boiler that generates steam and hot water for hot-water supply by utilizing exhaust heat of the engine and an exhaust heat utilizing apparatus including a heat exchanger are accommodated. A combination container unit is configured so that shorter walls on one end side of the both containers in a longer direction are positioned on a same straight line, and making both longer walls of the long generator container and the short exhaust heat utilizing container to face each other. Both containers are coupled with a plurality of pipes along the shorter direction of the containers across the facing walls along which the both containers are arranged.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: March 20, 2018
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tomokazu Yamanaka, Takuya Hirai, Shuichi Shimodaira, Hirokazu Narita, Takeshi Abe
  • Patent number: 9896103
    Abstract: A running control device of a vehicle includes an engine with cylinders, a clutch connecting/disconnecting a power transmission path between the engine and wheels, and a variable mechanism to vary an intake air amount sucked into the cylinders. The running control device performs a normal running mode by transmitting engine drive force to the wheels, a neutral inertia running mode by disconnecting the power transmission path between the engine and the wheels, and a cylinder resting inertia running mode by resting at least a part of the cylinders while the power transmission path between the engine and the wheels is connected. The running control device makes the intake air amount sucked into the cylinders larger at the time of return from the neutral inertia running mode to the normal running mode as compared to the case of return from the cylinder resting inertia running mode to the normal running mode.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: February 20, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
  • Patent number: 9789874
    Abstract: A running control device has an engine coupling running mode enabling an engine brake running mode performed by coupling an engine and wheels with an engine brake applied by driven rotation of the engine, and an inertia running mode performed with an engine brake force lower than that of the engine brake running mode. The running control device includes a steering wheel steering angle as a condition of terminating the inertia running mode. The running control device performs a first inertia running mode with the rotation of the engine stopped and a second inertia running mode with the engine rotating. The first inertia running mode is terminated when the steering angle becomes equal to or greater than a predefined first determination value. The second inertia running mode is terminated when the steering angle becomes equal to or greater than a predefined second determination value larger than the first determination value.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: October 17, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita
  • Patent number: 9694821
    Abstract: An upper limit value of an upward gradient of a road surface for starting neutral coasting is set to be larger than an upper limit of the upward gradient of the road surface for starting free-run coasting, so, when the upward gradient is relatively large and a coasting distance is short, the vehicle is caused to travel in the neutral coasting, and stop and restart of the engine are not carried out. Therefore, a decrease in drivability of the vehicle is suppressed. When the upward gradient is relatively small and the coasting distance is long, the vehicle is caused to travel in the free-run coasting, and supply of fuel to the engine is stopped, so fuel economy of the vehicle is obtained. Thus, it is possible to achieve both fuel economy and drivability of the vehicle during coasting on an upward gradient.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: July 4, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita
  • Patent number: D1021712
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: April 9, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nozomi Hirai, Yuki Isogai, Kazuhiro Sato, Takuya Ishibashi, Kenji Kido