Patents by Inventor Yuji Miyoshi

Yuji Miyoshi 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: 10618378
    Abstract: A control apparatus of a heat exchanging system according to the invention executes a control for activating a connection system to connect an engine water passage to a heater water passage and a control for increasing an engine pump duty ratio, and then executes a control for decreasing a heater pump duty ratio when the control for decreasing the heater pump duty ratio and the control for increasing the engine pump duty ratio are requested to be executed in order to control a core flow rate to a requested core flow rate and an engine flow rate to a requested engine flow rate after the engine water passage is connected to the heater water passage by the connection system.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: April 14, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidefumi Aikawa, Yoichi Ogura, Masatoshi Yano, Yuji Miyoshi, Yu Ofune
  • Patent number: 10563623
    Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 18, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Shinagawa, Takashi Hotta, Takeo Yamaguchi, Yoshio Ohashi, Taizo Yoshinaga, Yuji Miyoshi
  • 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
  • Patent number: 10557400
    Abstract: The cooling apparatus of the engine sets the first shut-off valve to the closed position, sets the second shut-off valve to the open position, and performs the opposite flow connection operation to supplies the cooling water directly to the cylinder block water passage from the cylinder head water passage without flowing the cooling water through the radiator and to the heat exchanger from the cylinder head water block when the engine temperature is lower than the completely-warmed temperature, and the cooling water is requested to be supplied to the heat exchanger.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: February 11, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshio Hasegawa, Tomohiro Shinagawa, Yuji Miyoshi
  • Patent number: 10487712
    Abstract: An exhaust gas control system includes a NSR catalyst, a fuel supply valve, a SCR catalyst an addition device, and an electronic control unit. When temperature of NSR catalyst is in a range of a predetermined first temperature range and temperature of SCR catalyst is in a range of a predetermined second temperature range, the electronic control unit is configured to add additive with the addition device, and execute predetermined air-fuel ratio processing to control the air-fuel ratio of exhaust gas flowing into the NSR catalyst. In the predetermined air-fuel ratio processing, the electronic control unit is configured to execute a second air-fuel ratio processing after a first air-fuel ratio processing, and execute the third air-fuel ratio processing after a first air-fuel ratio processing and the second air-fuel ratio processing and in succession to the second air-fuel ratio processing.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 26, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuriko Hagimoto, Yuji Miyoshi, Hiromasa Nishioka
  • Patent number: 10465579
    Abstract: When the temperature of an NSR catalyst belongs to a specified NSR temperature range and the temperature of an SCR catalyst belongs to a specified SCR temperature range, urea water is added, and specified air-fuel ratio processing relating to an air-fuel ratio of exhaust gas flowing into the NSR catalyst is executed. The specified air-fuel ratio processing includes i) a first air-fuel ratio processing to cause the air-fuel ratio of the exhaust gas flowing into the NSR catalyst to be a first lean air-fuel ratio that causes emission of occluded NOx from the NSR catalyst and ii) a second air-fuel ratio processing to cause the air-fuel ratio of the exhaust gas to be a second lean air-fuel ratio leaner than the first lean air-fuel ratio. In the specified air-fuel ratio processing, the first air-fuel ratio processing and the second air-fuel ratio processing are alternately repeated.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: November 5, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuriko Hagimoto, Yuji Miyoshi, Hiromasa Nishioka
  • 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
  • Patent number: 10428720
    Abstract: The cooling apparatus of the engine according to the invention supplies the cooling water directly to the cylinder block water passage from the cylinder head water passage when the engine temperature is between first and second temperatures, and a supply of the cooling water to the heat exchanger is not requested. The first and second temperatures are lower than the engine completely-warmed temperature. The apparatus supplies the cooling water discharged from the cylinder block and head water passages, to the water passages through the heat exchanger when the engine temperature is between the second temperature and the engine completely-warmed temperature, and the supply of the cooling water to the heat exchanger is not requested.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: October 1, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshio Hasegawa, Yuji Miyoshi, Tomohiro Shinagawa, Yoshiharu Hirata
  • Publication number: 20190291710
    Abstract: A temperature control apparatus of a vehicle according to the invention stops activating a heat pump and supplies heat exchanging liquid from an engine passage to a battery passage when a warming of the battery is requested and a temperature of the heat exchanging liquid flowing out of the engine passage is equal to or lower than a permitted upper limit temperature. On the other hand, the apparatus activates the heat pump to cool the heat exchanging liquid and supplies the cooled heat exchanging liquid from the engine passage to the battery passage when the warming of the battery is requested and the temperature of the heat exchanging liquid flowing out of the engine passage is higher than the permitted upper limit temperature.
    Type: Application
    Filed: February 25, 2019
    Publication date: September 26, 2019
    Inventors: Yoichi OGURA, Kunihiko HAYASHI, Yuji MIYOSHI, Masatoshi YANO, Yu OFUNE
  • Patent number: 10415455
    Abstract: A cooling apparatus of an engine of the invention has a circulation passage for supplying cooling water to head and block passages through a heat exchanger. The apparatus circulates the cooling water through the circulation passage when a second condition is satisfied and then, a first condition is satisfied. The first condition includes a water supply condition that a supply of the cooling water to the exchanger is requested. The second condition includes the water supply condition and a condition that a cooling water temperature is lower than an engine completely-warmed water temperature.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: September 17, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshio Hasegawa, Yuji Miyoshi, Tomohiro Shinagawa, Yoshiharu Hirata, Ryo Michikawauchi
  • Publication number: 20190277184
    Abstract: A temperature control apparatus of a vehicle of the invention flows a cooling medium in an engine circulation circuit and a battery circulation circuit and an activation of an engine heat exchanging system so as not to perform an engine heat exchanging when an engine temperature is lower than an engine warming end temperature and a battery temperature is lower than a predetermined battery temperature lower than a battery warming end temperature, and flows the cooling medium in the engine circulation circuit and the battery circulation circuit and the activation of the engine heat exchanging system so as to perform the engine heat exchanging when the engine temperature is lower than the engine warming end temperature, and the battery temperature is equal to or higher than the predetermined battery temperature.
    Type: Application
    Filed: January 4, 2019
    Publication date: September 12, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoichi OGURA, Kunihiko Hayashi, Yuji Miyoshi, Masatoshi Yano, Yu Ofune
  • Patent number: 10393044
    Abstract: A control device includes an electronic control unit. During deceleration of the engine, when a temperature of a three-way catalyst is equal to or higher than a predetermined temperature and execution conditions of fuel cut processing are established, the electronic control unit executes first control for closing an exhaust shutoff valve, while fuel injection and ignition are continued. When the exhaust shutoff valve reaches the closed state in the first control, the electronic control unit executes second control for bringing the engine into an intake control state in which the intake throttle is closed and an EGR valve is in a predetermined open state. In the second control, the electronic control unit executes the fuel cut processing by stopping the ignition before the engine is brought into the intake control state and stopping the fuel injection after the engine is brought into the intake control state.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: August 27, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirokazu Ito, Yuji Yamaguchi, Yuji Miyoshi
  • Patent number: 10385759
    Abstract: A cooling system includes: a first coolant passage; a second coolant passage; a pump; a radiator; a third coolant passage; a connection switching mechanism that switches between a forward flow connection state and a reverse flow connection state; a fourth coolant passage; a fifth coolant passage; and a shutoff valve configured to open/shut off the fifth coolant passage. The radiator is disposed at a location at which coolant flowing from a second end of the first coolant passage into a fourth end of the second coolant passage is not cooled in the reverse flow connection state, and coolant flowing out from the second end of the first coolant passage and the fourth end of the second coolant passage is cooled in the forward flow connection state.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: August 20, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Yoshio Hasegawa, Tomohiro Shinagawa, Kenichi Kubota, Ryo Michikawauchi, Yuji Miyoshi, Yoshiharu Hirata, Naoto Yumisashi
  • Patent number: 10378467
    Abstract: A control device for an internal combustion engine is provided with a target air-fuel ratio setting part including a first setting control part performing normal control alternately switching a target air-fuel ratio between a predetermined first lean air-fuel ratio and a predetermined first rich air-fuel ratio and a second setting control part performing control for restoration of the storage amount stopping normal control and increasing the oxygen storage amount of a second catalyst when an output air-fuel ratio of a third air-fuel ratio sensor becomes a predetermined rich judgment air-fuel ratio or less.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 13, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Inoshita, Shuntaro Okazaki, Yuji Miyoshi
  • 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: 10358963
    Abstract: An exhaust purification system of an internal combustion engine comprising at least two exhaust treatment catalysts arranged in an engine exhaust passage, a hydrogen feed source, and a plurality of hydrogen feed passages for feeding hydrogen from the hydrogen feed source to the exhaust treatment catalysts. When warming up the exhaust treatment catalysts, hydrogen is fed from the hydrogen feed source through the corresponding hydrogen feed passage to the exhaust treatment catalyst with the larger rise of the exhaust removal rate when hydrogen is fed among the exhaust treatment catalysts.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: July 23, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kiyoshi Fujiwara, Yuji Miyoshi, Shinichi Takeshima, Hiromasa Nishioka
  • Publication number: 20190186430
    Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.
    Type: Application
    Filed: October 15, 2018
    Publication date: June 20, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro SHINAGAWA, Takashi HOTTA, Takeo YAMAGUCHI, Yoshio OHASHI, Taizo YOSHINAGA, Yuji MIYOSHI
  • Publication number: 20190168820
    Abstract: A vehicle body structure satisfies at least one of the following (A), (B), and (C): (A) an adhesive amount per unit area of a first adhesive in a second adjacent part is smaller than an adhesive amount per unit area of the first adhesive in a first adjacent part; (B) an adhesive amount per unit area of a panel adhesive in a second panel adjacent part is smaller than an adhesive amount per unit area of the panel adhesive in a first panel adjacent part; and (C) an adhesive amount per unit area of a second adhesive in a stacking adjacent part is smaller than an adhesive amount per unit area of the second adhesive in a non-stacking adjacent part.
    Type: Application
    Filed: November 23, 2018
    Publication date: June 6, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuji MIYOSHI, Tomoya YOSHIDA, Junichi TANAKA, Masanobu KOBASHI