Patents by Inventor Mitsuru Yamaguchi

Mitsuru Yamaguchi 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).

  • Publication number: 20240106276
    Abstract: A wireless power supply system includes a plurality of power transmission units that receives and supplies power to a power receiving unit via the power transmission coil in a resonance state, and a switching control unit that switches a state of a first power transmission unit to a resonance state when the magnitude of the magnetic flux generated in a first power transmission coil of the first power transmission unit, which is one of the plurality of power transmission units, is greater than a predetermined threshold value, and switches to a non-resonance state when the magnitude is less than the threshold value. The threshold is set as a magnitude that exceeds the magnetic flux generated in the first power transmission coil due to coupling between the first power transmission coil and a second power transmission coil of a second power transmission unit, which is adjacent to first power transmission coil.
    Type: Application
    Filed: November 30, 2023
    Publication date: March 28, 2024
    Applicant: DENSO CORPORATION
    Inventors: Mitsuru SHIBANUMA, Eisuke TAKAHASHI, Masaya TAKAHASHI, Nobuhisa YAMAGUCHI, Kazuyuki KATO
  • Patent number: 11926227
    Abstract: In a moving-object power supply system, a control unit selects, as a power transmission segment, one of segments included in at least one power transmission section. The control unit supplies, through a power supply circuit, power to the power transmission segment to thereby generate a magnetic field through a power transmission coil of the power transmission segment. The control unit determines, based on an ascertained first electrical characteristic of the power transmission segment and an ascertained second electrical characteristic of at least one power non-transmission segment, whether there is a malfunction in each of the power transmission segment and the at least one power non-transmission segment.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: March 12, 2024
    Assignee: DENSO CORPORATION
    Inventors: Kouji Mazaki, Nobuhisa Yamaguchi, Eisuke Takahashi, Mitsuru Shibanuma, Shinpei Takita, Masaya Takahashi, Hayato Sumiya, Masaki Kanesaki, Takuya Kiguchi, Kazuhiro Uda, Yuusei Nakayashiki
  • Publication number: 20230249671
    Abstract: An electronic control unit includes processing circuitry. A hybrid electric vehicle has an electric traveling mode, in which the hybrid electric vehicle travels with a system clutch disengaged and an engine in a stopped state, and a hybrid traveling mode, in which the hybrid electric vehicle travels with the system clutch engaged and engine operating. The processing circuitry is configured to control, when the traveling mode is switched from the electric traveling mode to the hybrid traveling mode, a throttle opening degree of the engine at the time of completion of engagement of the system clutch in accordance with the atmospheric pressure such that a constant intake air amount is obtained regardless of the level of the atmospheric pressure.
    Type: Application
    Filed: February 2, 2023
    Publication date: August 10, 2023
    Inventors: Naoki NAKANISHI, Masato YOSHIKAWA, Mitsuru YAMAGUCHI
  • Publication number: 20230242088
    Abstract: During BEV running that a vehicle is caused to run by using power of an electric motor, a determination threshold for determining whether to start an engine is corrected by estimating a shortage of driving force in advance based on a gear stage of an automatic transmission and a turbine rotation speed (that is, an AT input shaft rotation speed of the automatic transmission). Therefore, the engine is started at appropriate timing for a change in required MG torque, with the result that the shortage of driving force of the vehicle is suppressed.
    Type: Application
    Filed: November 10, 2022
    Publication date: August 3, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mitsuru YAMAGUCHI, Masayuki BABA
  • Publication number: 20230234556
    Abstract: A hybrid electric vehicle includes an engine, a motor, a clutch provided between the engine and the motor, a battery for charging regenerative electric power of the motor, and a control device that controls the engine, the motor, and the clutch. The control device includes a charge determination unit that determines whether the battery is chargeable when there is a deceleration request, and a deceleration control unit that executes, in a negative determination, a first deceleration process to decelerate the hybrid electric vehicle by friction torque of the engine, and executes, in a positive determination, a second deceleration process to decelerate the hybrid electric vehicle by regenerative torque of the motor. In the second deceleration process, the deceleration control unit causes the motor to output the friction torque at a rotational speed of the engine corresponding to a rotational speed of the motor as the regenerative torque.
    Type: Application
    Filed: October 12, 2022
    Publication date: July 27, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya TANAKA, Motoshi ASADA, Mitsuru YAMAGUCHI, Masato YOSHIKAWA
  • Patent number: 10961898
    Abstract: A cooling device includes an inner passage, an outer passage, an engine-driven pump, an electromagnetic control valve, and a driving circuit that regulates current flowing through the electromagnetic control valve by activating and deactivating a switching element. A cooling controller for the cooling device includes a processing circuit configured to execute an operation process for operating, when the engine-driven pump is driven, the switching element by setting a duty cycle of an activation time to a switching cycle, which is a reciprocal of a switching frequency of the switching element, to be a larger value when a temperature of the internal combustion engine is low than when the temperature is high and a cycle varying process for setting a longer switching cycle when the temperature of the internal combustion engine is less than a preset temperature than when the temperature is greater than or equal to the preset temperature.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: March 30, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando, Masaaki Yamaguchi, Takahiko Aoyagi, Hirotaka Watanabe
  • Patent number: 10927747
    Abstract: A cooling system of an internal combustion engine includes an adjustment valve configured to adjust a flow rate of a cooling liquid discharged from a water jacket. A controller for the cooling system includes circuitry configured to execute flow-restriction control that controls the adjustment valve to restrict discharge of the cooling liquid from the water jacket, thereby increasing temperature of an engine body. The circuitry is configured to execute the flow-restriction control so that temperature of the cooling liquid in the water jacket at which the flow-restriction control is terminated is lower when an ambient pressure is low than when the ambient pressure is high.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: February 23, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
  • Patent number: 10808597
    Abstract: An internal combustion engine includes a water jacket, a cooling water pump as a cooling liquid pump, and an adjusting valve. A control device for the internal combustion engine executes the water stoppage control of increasing the temperature of the engine body by limiting the discharge of the cooling liquid from the water jacket by the adjusting valve, and an automatic stop and automatic startup control of automatically stopping and automatically starting the internal combustion engine. The control device increases the fuel injection amount for automatically starting the internal combustion engine in a case where the water stoppage control is being executed when the internal combustion engine is automatically stopped as compared with a case where the water stoppage control is not being executed when the internal combustion engine is automatically stopped.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: October 20, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshihiro Furuya, Rihito Kaneko, Noboru Takagi, Masaaki Yamaguchi, Hirokazu Ando, Mitsuru Yamaguchi
  • Patent number: 10619554
    Abstract: A coolant circuit of an engine cooling apparatus includes a first passage where coolant flows through a radiator and a second passage where coolant flows without passing through the radiator. A coolant control valve controls a first passage flow rate Frad and a second passage flow rate Fsec. An outlet coolant temperature sensor detects an outlet coolant temperature Tout, which is a coolant temperature before a branching point of the first passage and the second passage. An inlet coolant temperature sensor detects an inlet coolant temperature Tin, which is a coolant temperature after a merging point of the first passage and the second passage. A coolant temperature estimator calculates a radiator coolant temperature Trad, which is a coolant temperature at a coolant exit of the radiator, when the first passage flow rate Frad is greater than or equal to a specified flow rate using equation (1).
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: April 14, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noboru Takagi, Masaaki Yamaguchi, Rihito Kaneko, Hirokazu Ando, Mitsuru Yamaguchi, Yoshihiro Furuya
  • Patent number: 10598077
    Abstract: An ECU includes a motor control unit that controls energization to a motor, and a fixation determination unit that makes a determination on fixation of a valve body. The motor drives the valve body housed in a housing of a control valve. When the fixation determination unit has determined that the valve body is fixed, the motor control unit performs fixation-time control that energizes the motor so as to drive the valve body.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 24, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Isao Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando, Hidetoshi Onoda, Hiroshi Akeyama
  • Publication number: 20190383202
    Abstract: A cooling device includes an inner passage, an outer passage, an engine-driven pump, an electromagnetic control valve, and a driving circuit that regulates current flowing through the electromagnetic control valve by activating and deactivating a switching element. A cooling controller for the cooling device includes a processing circuit configured to execute an operation process for operating, when the engine-driven pump is driven, the switching element by setting a duty cycle of an activation time to a switching cycle, which is a reciprocal of a switching frequency of the switching element, to be a larger value when a temperature of the internal combustion engine is low than when the temperature is high and a cycle varying process for setting a longer switching cycle when the temperature of the internal combustion engine is less than a preset temperature than when the temperature is greater than or equal to the preset temperature.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Rihito KANEKO, Noboru TAKAGI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDO, Masaaki YAMAGUCHI, Takahiko AOYAGI, Hirotaka WATANABE
  • Patent number: 10508588
    Abstract: A cooling device includes: an air blast passage; a heater core that is disposed in the air blast passage; an air blast volume adjusting member that is opened and closed to adjust an air blast volume which flows in the heater core; a flow rate adjuster that adjusts a flow rate of the coolant which is introduced into the heater core; and a controller. The controller sets the flow rate of the coolant which is adjusted by the flow rate adjuster to be less than a lower limit value of an adjustable range of the flow rate of the coolant which is adjusted by the flow rate adjuster in a vehicle compartment air-conditioning state in which the air blast volume adjusting member allows an air blast to flow to the heater core when the air blast volume adjusting member fully closes the heater core side of the air blast passage.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: December 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
  • Patent number: 10253678
    Abstract: An engine cooling apparatus includes a mechanical water pump having a suction hole and N discharge holes (N is an integer not less than two), N water jackets that are arranged in an engine and correspond to the N discharge holes, N joint passages, each of which joins one of the N discharge holes to the associated water jacket, a return passage that returns coolant to the suction hole after the coolant has passed through the N water jackets and has merged in a merging portion, a coolant stopping mechanism that blocks return flow of coolant through the return passage, and N communication passages each of which allows the corresponding one of the N joint passages to communicate with the suction hole while bypassing the N water jackets and the coolant stopping mechanism.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: April 9, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Isao Takagi, Takashi Matsutani, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando
  • Publication number: 20190093546
    Abstract: A coolant circuit of an engine cooling apparatus includes a first passage where coolant flows through a radiator and a second passage where coolant flows without passing through the radiator. A coolant control valve controls a first passage flow rate Frad and a second passage flow rate Fsec. An outlet coolant temperature sensor detects an outlet coolant temperature Tout, which is a coolant temperature before a branching point of the first passage and the second passage. An inlet coolant temperature sensor detects an inlet coolant temperature Tin, which is a coolant temperature after a merging point of the first passage and the second passage. A coolant temperature estimator calculates a radiator coolant temperature Trad, which is a coolant temperature at a coolant exit of the radiator, when the first passage flow rate Frad is greater than or equal to a specified flow rate using equation (1).
    Type: Application
    Filed: September 12, 2018
    Publication date: March 28, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noboru TAKAGI, Masaaki YAMAGUCHI, Rihito KANEKO, Hirokazu ANDO, Mitsuru YAMAGUCHI, Yoshihiro FURUYA
  • Publication number: 20190078496
    Abstract: An internal combustion engine includes a water jacket, a cooling water pump as a cooling liquid pump, and an adjusting valve. A control device for the internal combustion engine executes the water stoppage control of increasing the temperature of the engine body by limiting the discharge of the cooling liquid from the water jacket by the adjusting valve, and an automatic stop and automatic startup control of automatically stopping and automatically starting the internal combustion engine. The control device increases the fuel injection amount for automatically starting the internal combustion engine in a case where the water stoppage control is being executed when the internal combustion engine is automatically stopped as compared with a case where the water stoppage control is not being executed when the internal combustion engine is automatically stopped.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 14, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshihiro FURUYA, Rihito KANEKO, Noboru TAKAGI, Masaaki YAMAGUCHI, Hirokazu ANDO, Mitsuru YAMAGUCHI
  • Publication number: 20190010857
    Abstract: A cooling system of an internal combustion engine includes an adjustment valve configured to adjust a flow rate of a cooling liquid discharged from a water jacket. A controller for the cooling system includes circuitry configured to execute flow-restriction control that controls the adjustment valve to restrict discharge of the cooling liquid from the water jacket, thereby increasing temperature of an engine body. The circuitry is configured to execute the flow-restriction control so that temperature of the cooling liquid in the water jacket at which the flow-restriction control is terminated is lower when an ambient pressure is low than when the ambient pressure is high.
    Type: Application
    Filed: June 6, 2018
    Publication date: January 10, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito KANEKO, Noboru TAKAGI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDOH, Masaaki YAMAGUCHI, Yoshihiro FURUYA
  • Publication number: 20180347445
    Abstract: A cooling device includes: an air blast passage; a heater core that is disposed in the air blast passage; an air blast volume adjusting member that is opened and closed to adjust an air blast volume which flows in the heater core; a flow rate adjuster that adjusts a flow rate of the coolant which is introduced into the heater core; and a controller. The controller sets the flow rate of the coolant which is adjusted by the flow rate adjuster to be less than a lower limit value of an adjustable range of the flow rate of the coolant which is adjusted by the flow rate adjuster in a vehicle compartment air-conditioning state in which the air blast volume adjusting member allows an air blast to flow to the heater core when the air blast volume adjusting member fully closes the heater core side of the air blast passage.
    Type: Application
    Filed: April 24, 2018
    Publication date: December 6, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
  • Publication number: 20180066567
    Abstract: An ECU includes a motor control unit that controls energization to a motor, and a fixation determination unit that makes a determination on fixation of a valve body. The motor drives the valve body housed in a housing of a control valve. When the fixation determination unit has determined that the valve body is fixed, the motor control unit performs fixation-time control that energizes the motor so as to drive the valve body.
    Type: Application
    Filed: September 5, 2017
    Publication date: March 8, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito KANEKO, Noboru TAKAGI, Isao TAKAGI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDO, Hidetoshi ONODA, Hiroshi AKEYAMA
  • Publication number: 20170218879
    Abstract: An engine cooling apparatus includes a mechanical water pump having a suction hole and N discharge holes (N is an integer not less than two), N water jackets that are arranged in an engine and correspond to the N discharge holes, N joint passages, each of which joins one of the N discharge holes to the associated water jacket, a return passage that returns coolant to the suction hole after the coolant has passed through the N water jackets and has merged in a merging portion, a coolant stopping mechanism that blocks return flow of coolant through the return passage, and N communication passages each of which allows the corresponding one of the N joint passages to communicate with the suction hole while bypassing the N water jackets and the coolant stopping mechanism.
    Type: Application
    Filed: January 18, 2017
    Publication date: August 3, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rihito KANEKO, Noboru TAKAGI, Isao TAKAGI, Takashi MATSUTANI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDO
  • Publication number: 20170083984
    Abstract: A tax exemption processing system includes a storage device which stores a purchaser data file in which information relating to a sales of a commodity purchased by a purchaser identified by a purchaser code and a store code for identifying a tax-free store at which the commodity is purchased are associated with the purchaser code, an information processing apparatus which receives the purchaser data file associated with the purchaser code from the storage device if receiving the purchaser code of the purchaser who receives a refund on the commodity purchased, and calculates a taxable amount for each tax-free store based on the information relating to the sales of the commodity in the received purchaser data file to output the taxable amount calculated for each tax-free store.
    Type: Application
    Filed: August 24, 2016
    Publication date: March 23, 2017
    Inventors: Mitsuru Yamaguchi, Takeshi Nakazono