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).
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Publication number: 20240106276Abstract: 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: ApplicationFiled: November 30, 2023Publication date: March 28, 2024Applicant: DENSO CORPORATIONInventors: Mitsuru SHIBANUMA, Eisuke TAKAHASHI, Masaya TAKAHASHI, Nobuhisa YAMAGUCHI, Kazuyuki KATO
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Patent number: 11926227Abstract: 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: GrantFiled: November 17, 2021Date of Patent: March 12, 2024Assignee: DENSO CORPORATIONInventors: Kouji Mazaki, Nobuhisa Yamaguchi, Eisuke Takahashi, Mitsuru Shibanuma, Shinpei Takita, Masaya Takahashi, Hayato Sumiya, Masaki Kanesaki, Takuya Kiguchi, Kazuhiro Uda, Yuusei Nakayashiki
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Publication number: 20230249671Abstract: 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: ApplicationFiled: February 2, 2023Publication date: August 10, 2023Inventors: Naoki NAKANISHI, Masato YOSHIKAWA, Mitsuru YAMAGUCHI
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Publication number: 20230242088Abstract: 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: ApplicationFiled: November 10, 2022Publication date: August 3, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuru YAMAGUCHI, Masayuki BABA
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Publication number: 20230234556Abstract: 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: ApplicationFiled: October 12, 2022Publication date: July 27, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya TANAKA, Motoshi ASADA, Mitsuru YAMAGUCHI, Masato YOSHIKAWA
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Patent number: 10961898Abstract: 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: GrantFiled: June 12, 2019Date of Patent: March 30, 2021Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando, Masaaki Yamaguchi, Takahiko Aoyagi, Hirotaka Watanabe
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Patent number: 10927747Abstract: 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: GrantFiled: June 6, 2018Date of Patent: February 23, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
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Patent number: 10808597Abstract: 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: GrantFiled: September 7, 2018Date of Patent: October 20, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshihiro Furuya, Rihito Kaneko, Noboru Takagi, Masaaki Yamaguchi, Hirokazu Ando, Mitsuru Yamaguchi
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Patent number: 10619554Abstract: 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: GrantFiled: September 12, 2018Date of Patent: April 14, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Noboru Takagi, Masaaki Yamaguchi, Rihito Kaneko, Hirokazu Ando, Mitsuru Yamaguchi, Yoshihiro Furuya
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Patent number: 10598077Abstract: 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: GrantFiled: September 5, 2017Date of Patent: March 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Isao Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando, Hidetoshi Onoda, Hiroshi Akeyama
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Publication number: 20190383202Abstract: 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: ApplicationFiled: June 12, 2019Publication date: December 19, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Rihito KANEKO, Noboru TAKAGI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDO, Masaaki YAMAGUCHI, Takahiko AOYAGI, Hirotaka WATANABE
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Patent number: 10508588Abstract: 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: GrantFiled: April 24, 2018Date of Patent: December 17, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
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Patent number: 10253678Abstract: 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: GrantFiled: January 18, 2017Date of Patent: April 9, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Isao Takagi, Takashi Matsutani, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Ando
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Publication number: 20190093546Abstract: 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: ApplicationFiled: September 12, 2018Publication date: March 28, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Noboru TAKAGI, Masaaki YAMAGUCHI, Rihito KANEKO, Hirokazu ANDO, Mitsuru YAMAGUCHI, Yoshihiro FURUYA
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Publication number: 20190078496Abstract: 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: ApplicationFiled: September 7, 2018Publication date: March 14, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihiro FURUYA, Rihito KANEKO, Noboru TAKAGI, Masaaki YAMAGUCHI, Hirokazu ANDO, Mitsuru YAMAGUCHI
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Publication number: 20190010857Abstract: 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: ApplicationFiled: June 6, 2018Publication date: January 10, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito KANEKO, Noboru TAKAGI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDOH, Masaaki YAMAGUCHI, Yoshihiro FURUYA
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Publication number: 20180347445Abstract: 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: ApplicationFiled: April 24, 2018Publication date: December 6, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
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Publication number: 20180066567Abstract: 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: ApplicationFiled: September 5, 2017Publication date: March 8, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito KANEKO, Noboru TAKAGI, Isao TAKAGI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDO, Hidetoshi ONODA, Hiroshi AKEYAMA
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Publication number: 20170218879Abstract: 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: ApplicationFiled: January 18, 2017Publication date: August 3, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito KANEKO, Noboru TAKAGI, Isao TAKAGI, Takashi MATSUTANI, Naoto HISAMINATO, Mitsuru YAMAGUCHI, Hirokazu ANDO
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Publication number: 20170083984Abstract: 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: ApplicationFiled: August 24, 2016Publication date: March 23, 2017Inventors: Mitsuru Yamaguchi, Takeshi Nakazono