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: 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
  • Patent number: 11780293
    Abstract: An in-vehicle temperature control system includes a refrigeration circuit including an inter-media heat exchanger that dissipates heat from a refrigerant to a heat medium, the refrigeration circuit being configured to realize a refrigeration cycle, and a heat circuit including a heater core, the inter-media heat exchanger, and an engine heat circuit. The heat circuit includes an adjusting valve. When heating is performed by using heat obtained by the refrigeration cycle, the adjusting valve is controlled to a first state where the heat medium flows into the heater core from the inter-media heat exchanger, and when heating is performed by using heat obtained by an internal combustion engine, the adjusting valve is controlled to a second state where the heat medium flows into the heater core from the engine heat circuit.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: October 10, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Miyoshi
  • Publication number: 20230311618
    Abstract: A temperature control system includes a heater core utilizing heat of a heat medium; an engine heat exchanger utilizing exhaust heat of an engine to heat the heat medium; a condenser utilizing heat other than the exhaust heat to heat the heat medium; a heat circuit having the heater core and condenser; a communication flow path making the engine heat exchanger communicate with the heat circuit; and a connection state switching mechanism switching a flow state of the heat medium, between a first state and a second state. In the first state, the heat medium flows through the heat circuit, while flowing through the heater core, and in the second state, the heat medium flows through the heat circuit without flowing through the heater core. The heat circuit is arranged at a front of a passenger compartment, and the engine heat exchanger is arranged at a rear of the compartment.
    Type: Application
    Filed: June 8, 2023
    Publication date: October 5, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji MIYOSHI
  • Patent number: 11760154
    Abstract: An in-vehicle temperature adjustment system includes: a refrigeration circuit including an inter-medium heat exchanger and a vaporizer that vaporizes the cooling medium to achieve a refrigeration cycle by circulating a cooling medium; a thermal circuit including a heater core, the inter-medium heat exchanger, an engine thermal circuit, and a radiator to circulate the heating medium; and a controller that controls a distribution state of the heating medium. The thermal circuit includes: a first branch portion at which a coolant flowing out of the engine thermal circuit and the inter-medium heat exchanger is divided into coolants flowing into the heater core and into the radiator; a second branch portion at which a coolant flowing out of the heater core is divided into coolants flowing into the inter-medium heat exchanger and into the engine thermal circuit; a first adjustment valve and a second adjustment valve.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: September 19, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Miyoshi
  • Patent number: 11724570
    Abstract: A temperature control system includes a heater core utilizing heat of a heat medium; an engine heat exchanger utilizing exhaust heat of an engine to heat the heat medium; a condenser utilizing heat other than the exhaust heat to heat the heat medium; a heat circuit having the heater core and condenser; a communication flow path making the engine heat exchanger communicate with the heat circuit; and a connection state switching mechanism switching a flow state of the heat medium, between a first state and a second state. In the first state, the heat medium flows through the heat circuit, while flowing through the heater core, and in the second state, the heat medium flows through the heat circuit without flowing through the heater core. The heat circuit is arranged at a front of a passenger compartment, and the engine heat exchanger is arranged at a rear of the compartment.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: August 15, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Miyoshi
  • Publication number: 20230121213
    Abstract: An NBR composition, that is excellent in rubber material processability and vulcanized rubber hardness, comprising 93 to 105 parts by weight of carbon black with a carbon black grade of N330 or N550, 1.0 to 4.0 parts by weight of a vulcanization retarder, 2.0 to 5.0 parts by weight of thiazole-based and thiuram-based vulcanization accelerators, and 1.0 to 4.0 parts by weight of a sulfur-based vulcanizing agent, based on 100 parts by weight of NBR. The vulcanized molded product obtained from the NBR composition has a rubber hardness (Duro A, instant) of 85 or more according to JIS K6253 corresponding to ISO 18517, and can be effectively used as an automobile buffer material such as a stopper for electric power steering, a buffer material for nailers, a buffer material for devices equipped with hydraulic cylinders, or the like.
    Type: Application
    Filed: March 3, 2021
    Publication date: April 20, 2023
    Applicant: NOK CORPORATION
    Inventor: Yuji MIYOSHI
  • Publication number: 20230022738
    Abstract: The present disclosure provides a body structure for a vehicle capable of improving a vibration damping effect by a damping member while preventing an increase in an application amount of the damping member and a shape change of a component. Embodiments include a body structure for a vehicle in which a first bonded surface of a first body component and a second bonded surface of a second body component are bonded via a damping member, with which a portion between the first bonded surface and the second bonded surface is filled. The first bonded surface of the first body component has a vertical wall extending toward the second bonded surface or away from the second bonded surface. The portion between the first bonded surface and the second bonded surface is filled with the damping member such that the damping member contacts the vertical wall.
    Type: Application
    Filed: November 24, 2020
    Publication date: January 26, 2023
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuji MIYOSHI, Kohya NAKAGAWA, Tomoya YOSHIDA, Koki KAGIMOTO, Shinichi OHSHIMA
  • Publication number: 20220371397
    Abstract: An in-vehicle temperature adjustment system includes: a refrigeration circuit including an inter-medium heat exchanger and a vaporizer that vaporizes the cooling medium to achieve a refrigeration cycle by circulating a cooling medium; a thermal circuit including a heater core, the inter-medium heat exchanger, an engine thermal circuit, and a radiator to circulate the heating medium; and a controller that controls a distribution state of the heating medium. The thermal circuit includes: a first branch portion at which a coolant flowing out of the engine thermal circuit and the inter-medium heat exchanger is divided into coolants flowing into the heater core and into the radiator; a second branch portion at which a coolant flowing out of the heater core is divided into coolants flowing into the inter-medium heat exchanger and into the engine thermal circuit; a first adjustment valve and a second adjustment valve.
    Type: Application
    Filed: March 22, 2022
    Publication date: November 24, 2022
    Inventor: Yuji MIYOSHI
  • Publication number: 20220371403
    Abstract: An in-vehicle temperature control system includes a refrigeration circuit including an inter-media heat exchanger that dissipates heat from a refrigerant to a heat medium, the refrigeration circuit being configured to realize a refrigeration cycle, and a heat circuit including a heater core, the inter-media heat exchanger, and an engine heat circuit. The heat circuit includes an adjusting valve. When heating is performed by using heat obtained by the refrigeration cycle, the adjusting valve is controlled to a first state where the heat medium flows into the heater core from the inter-media heat exchanger, and when heating is performed by using heat obtained by an internal combustion engine, the adjusting valve is controlled to a second state where the heat medium flows into the heater core from the engine heat circuit.
    Type: Application
    Filed: April 14, 2022
    Publication date: November 24, 2022
    Inventor: Yuji MIYOSHI
  • Patent number: 11413931
    Abstract: A vehicle-mounted temperature controller includes a first heat circuit having a heat exchanger for a heat generating device and a first heat exchanger; a second heat circuit having a heat medium flow path of an engine and a second heat exchanger; and a refrigeration circuit having the first heat exchanger to make the refrigerant evaporate and the second heat exchanger to make the refrigerant condense. A circulation mode control device control a circulation mode so that the second heat medium raised in temperature by absorbing heat from the refrigerant at the second heat exchanger flows into the flow path, when the engine is stopped and heat is discharged from the heat generating device to the first heat medium in the heat exchanger for the heat generating device and heat is absorbed from the first heat medium to the refrigerant in the first heat exchanger.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: August 16, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masatoshi Yano, Yuji Miyoshi
  • 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: 11364767
    Abstract: A vehicle-mounted temperature controller, including: a first heat circuit having a heater core used for heating and a first heat exchanger and configured so that a first heat medium is circulated through the first heat exchanger; a refrigeration circuit having the first heat exchanger condensing the refrigerant and an evaporator evaporating the refrigerant, and configured to operate a refrigeration cycle; and a heat medium flow path of an internal combustion engine configured to communicate with the first heat circuit so that the first heat medium circulates through the heat medium flow path. The first heat circuit is configured so that an outlet of the heat medium flow path is communicated with a core downstream side part positioned downstream of the heater core and upstream of the first heat exchanger and a core upstream side part positioned downstream of the first heat exchanger and upstream of the heater core.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: June 21, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Manabu Kitamura, Hidefumi Aikawa, Yuji Miyoshi, Masaki Suzuki
  • Patent number: 11358436
    Abstract: A vehicle-mounted temperature controller includes a low temperature circuit and a refrigeration circuit. The low temperature circuit has a heat generating equipment heat exchanger exchanging heat with heat generating equipment, a radiator, a first heat exchanger, and a three-way valve. The refrigeration circuit has a second heat exchanger discharging heat from the refrigerant to a high temperature circuit to make the refrigerant condense, and the first heat exchanger making the refrigerant absorb heat from the cooling water to make the refrigerant evaporate. The low temperature circuit includes a first partial circuit through which the cooling water flows through the radiator and the first heat exchanger, and a second partial circuit through which the cooling water flows through the heat generating equipment heat exchanger without passing through the radiator and the first heat exchanger. The cooling water circulates simultaneously and separately at these first partial circuit and second partial circuit.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: June 14, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidefumi Aikawa, Manabu Orihashi, Yoshio Hasegawa, Takashi Ogawa, Yuji Miyoshi, Kunihiko Hayashi
  • Publication number: 20220089146
    Abstract: The control device of a hybrid vehicle for controlling a hybrid vehicle includes a position estimating part configured to estimate a position of the hybrid vehicle using the vehicle position detection device, a reliability calculating part configured to calculate a reliability of position information of the hybrid vehicle, and a power output part configured to control the internal combustion engine and the electric motor to output power for driving use. The power output part is configured to reduce the output of the internal combustion engine when the reliability is equal to or less than a reference value, compared to when the reliability is higher than the reference value.
    Type: Application
    Filed: September 23, 2021
    Publication date: March 24, 2022
    Inventors: Daiki YOKOYAMA, Hiroya CHIBA, Yoshiyuki KAGEURA, Masanori SHIMADA, Yoshihiro SAKAYANAGI, Hiroyuki SUGIHARA, Yuji MIYOSHI
  • Patent number: 11241930
    Abstract: A vehicle-mounted temperature controller has a first heat circuit and a refrigeration circuit. The first heat circuit has a first radiator exchanging heat with outside air, a first heat exchanger, and a first pump, and configured so that a first heat medium is circulated therethrough. The refrigeration circuit has the first heat exchanger discharging heat from the refrigerant to a first heat medium to make a refrigerant condense, a second heat exchanger absorbing heat to the refrigerant to thereby make the refrigerant evaporate and to cool an object to be cooled, and a compressor, and is configured so that the refrigerant circulates through the first heat exchanger and the second heat exchanger and thereby a refrigeration cycle is realized. When the object to be cooled starts being cooled, the compressor is started up after the first pump is started up.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: February 8, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidefumi Aikawa, Yuji Miyoshi
  • Publication number: 20210387506
    Abstract: An in-vehicle temperature control system includes: a heater core used to heat an inside of a vehicle cabin using heat of a heat medium; a first heating unit that heats the heat medium using exhaust heat of an internal combustion engine; a thermal circuit configured to circulate the heat medium between the heater core and the first heating unit; a distribution state switching mechanism that switches a distribution state of the heat medium between a first distribution state and a second distribution state; and a control device that controls the distribution state switching mechanism, wherein: the thermal circuit includes a bypass flow path disposed in parallel with the heater core.
    Type: Application
    Filed: March 3, 2021
    Publication date: December 16, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji MIYOSHI
  • Patent number: 11186141
    Abstract: A vehicle-mounted temperature controller used in a vehicle having a motor, a battery, and a PCU is provided with a low temperature circuit and a refrigeration circuit. The low temperature circuit has a battery heat exchanger, a PCU heat exchanger, a radiator, and a chiller, and the cooling water circulates through them. The refrigeration circuit has a condenser and the chiller absorbing heat from the cooling water to the refrigerant, and the refrigerant circulates through them. The low temperature circuit is configured to be able to switch connection states between a first state where the battery heat exchanger and the chiller are connected, the PCU heat exchanger and the radiator are connected, and the battery heat exchanger and the chiller are not connected to the PCU heat exchanger and the radiator, and a second state where the chiller, the PCU heat exchanger, and the radiator are connected.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: November 30, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Miyoshi
  • Patent number: 11148655
    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: Grant
    Filed: February 25, 2019
    Date of Patent: October 19, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoichi Ogura, Kunihiko Hayashi, Yuji Miyoshi, Masatoshi Yano, Yu Ofune
  • Publication number: 20210283984
    Abstract: A temperature control system includes a heater core utilizing heat of a heat medium; an engine heat exchanger utilizing exhaust heat of an engine to heat the heat medium; a condenser utilizing heat other than the exhaust heat to heat the heat medium; a heat circuit having the heater core and condenser; a communication flow path making the engine heat exchanger communicate with the heat circuit; and a connection state switching mechanism switching a flow state of the heat medium, between a first state and a second state. In the first state, the heat medium flows through the heat circuit, while flowing through the heater core, and in the second state, the heat medium flows through the heat circuit without flowing through the heater core. The heat circuit is arranged at a front of a passenger compartment, and the engine heat exchanger is arranged at a rear of the compartment.
    Type: Application
    Filed: February 5, 2021
    Publication date: September 16, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji MIYOSHI
  • Patent number: 11072223
    Abstract: A control apparatus of a heat exchanging system according to the invention activates a connection system to connect an engine water passage to a heater water passage and then, shuts off a heater water passage portion between a portion, into which heat exchanging water flows from the engine water passage and a portion, from which the heat exchanging water flows out toward the engine water passage, and decreases heater pump and engine pump duty ratios when the duty ratios should be decreased for controlling core and engine flow rates to requested flow rates after the particular water passage is shut off, and the engine water passage is connected to the heater water passage.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: July 27, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidefumi Aikawa, Yoichi Ogura, Masatoshi Yano, Yuji Miyoshi, Yu Ofune