Patents by Inventor Hideki Kubonoya
Hideki Kubonoya 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: 20230090814Abstract: An electrified vehicle disclosed in the present specification includes: a motor configured to rotate a drive wheel of the electrified vehicle; a sensor configured to detect a motor rotation number that is the number of rotations of the motor; and a control device configured to perform feedback control of the motor rotation number based on a value detected by the sensor. The control device is configured to perform during the feedback control a process of extracting a vibration component in a predetermined frequency band from the value detected by the sensor, a process of calculating an integrated value by integrating the extracted vibration component for a predetermined period, and a process of determining whether the calculated integrated value falls within a predetermined abnormal range.Type: ApplicationFiled: July 28, 2022Publication date: March 23, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUBARU CORPORATIONInventors: Junichi Murase, Hideki Kubonoya, Masamichi Iwama, Hiroshi Ienaga
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Patent number: 11590944Abstract: A braking control device of a vehicle in which a braking force generator is connected to a differential mechanism to which a plurality of wheels is connected, and a friction brake is provided for each of the wheels includes a controller configured to control braking forces of the braking force generator and the friction brake. The controller is configured to: detect the wheel having a tendency of locking in which a slip ratio is larger than a predetermined determination value in a state where the braking force is transmitted to each of the wheels from the braking force generator via the differential mechanism; and reduce the tendency of locking by changing the braking force of the friction brake that is provided for the other wheel connected to the differential mechanism.Type: GrantFiled: September 16, 2020Date of Patent: February 28, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya Okumura, Hideki Kubonoya, Yusuke Suzuki
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Patent number: 11421766Abstract: Provided are a gear train and a vehicle installing the gear train. The gear train is configured to transmit power from a rotating electrical machine to a driving wheel through a differential and a drive shaft. The gear train includes a plurality of shafts on a plurality of axes lying different from each other and a plurality of gears that is disposed respectively on the plurality of shafts. At least one of the plurality of gears is an internal gear.Type: GrantFiled: November 14, 2019Date of Patent: August 23, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akira Hibino, Hideki Kubonoya, Hideaki Komada
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Patent number: 11342873Abstract: A controller for a switched reluctance motor, which includes a rotor, a stator, and coils wound around the stator and which is mounted on a vehicle as a traveling drive source, the controller including: a control unit performing regenerative control to apply a positive voltage and a negative voltage to the coils so that a current value of the coils becomes a first target current value in a predetermined regenerative region. Further, when the battery charge state value is a predetermined value or more, the control unit reduces a section where a negative voltage is applied to the coils to be narrower than that in a case where a battery charge state value is less than the predetermined value.Type: GrantFiled: February 15, 2019Date of Patent: May 24, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Junichi Deguchi, Hideki Kubonoya, Tadashi Fujiyoshi, Yuki Iwama
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Patent number: 11161418Abstract: A control device of an electric vehicle includes: a target rotation speed calculation unit that calculates a target rotation speed of a drive wheel based on a vehicle body speed; and a slip control unit that detects a slip of the drive wheel when a wheel speed exceeds the target rotation speed of the drive wheel and that controls motor torque of the motor in such a manner that the wheel speed becomes an appropriate rotation speed in detection of the slip. Further, the slip control unit controls the motor torque by feedback control according to a difference between the rotation speed of the motor and the target rotation speed of the drive wheel in detection of the slip.Type: GrantFiled: November 22, 2019Date of Patent: November 2, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naruto Yamane, Kazuya Okumura, Hideki Kubonoya, Fumiki Tanahashi
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Publication number: 20210122341Abstract: A braking control device of a vehicle in which a braking force generator is connected to a differential mechanism to which a plurality of wheels is connected, and a friction brake is provided for each of the wheels includes a controller configured to control braking forces of the braking force generator and the friction brake. The controller is configured to: detect the wheel having a tendency of locking in which a slip ratio is larger than a predetermined determination value in a state where the braking force is transmitted to each of the wheels from the braking force generator via the differential mechanism; and reduce the tendency of locking by changing the braking force of the friction brake that is provided for the other wheel connected to the differential mechanism.Type: ApplicationFiled: September 16, 2020Publication date: April 29, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya Okumura, Hideki Kubonoya, Yusuke Suzuki
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Patent number: 10843576Abstract: An electric vehicle includes front-wheel electric motor and rear-wheel electric motor driving front and rear wheels, respectively; a control unit controlling driving of those electric motors. Further, one of the electric motors is a permanent-magnet motor and the other is a magnetless motor, a maximum output of the permanent-magnet motor is smaller than a maximum output of the magnetless motor, and the control unit includes: a first drive control unit configured to drive the permanent-magnet motor when vehicle speed is in a first vehicle-speed range; and a second drive control unit configured to drive only the magnetless motor when the vehicle speed is in a second vehicle speed range, vehicle speeds in the second vehicle speed range are greater than vehicle speeds in the first vehicle-speed range.Type: GrantFiled: December 11, 2018Date of Patent: November 24, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tadashi Fujiyoshi, Junichi Deguchi, Hideki Kubonoya
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Patent number: 10819267Abstract: A controller for a switched reluctance motor is provided. The switched reluctance motor includes a rotor, a stator, and a coil wound on the stator. The switched reluctance motor is mounted on a vehicle as a drive source for propelling the vehicle. The controller includes an electronic control unit. The electronic control unit is configured to execute first control for exciting the coil at a first current value in a first exciting range. The electronic control unit is configured to, when the electronic control unit determines that the vehicle is not able to start moving even when the electronic control unit executes the first control, execute second control for exciting the coil at a second current value larger than the first current value in a second exciting range narrower than the first exciting range.Type: GrantFiled: November 9, 2018Date of Patent: October 27, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Junichi Deguchi, Hideki Kubonoya, Tadashi Fujiyoshi
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Patent number: 10814696Abstract: A heat exchange system for a vehicle including a battery, an electric motor, and a transmission system is provided. The heat exchange system includes a heat pump, and a heat exchanger. The heat pump is used for air conditioning. The heat pump includes an electric compressor that compresses a refrigerant. The electric compressor is configured to be driven with electric power from the battery. The heat exchanger is configured to exchange heat between the refrigerant and lubricating oil that lubricates the transmission system.Type: GrantFiled: September 7, 2018Date of Patent: October 27, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Satoshi Tominaga, Daisuke Tokozakura, Hideki Kubonoya
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Publication number: 20200247244Abstract: A control device of an electric vehicle includes: a target rotation speed calculation unit that calculates a target rotation speed of a drive wheel based on a vehicle body speed; and a slip control unit that detects a slip of the drive wheel when a wheel speed exceeds the target rotation speed of the drive wheel and that controls motor torque of the motor in such a manner that the wheel speed becomes an appropriate rotation speed in detection of the slip. Further, the slip control unit controls the motor torque by feedback control according to a difference between the rotation speed of the motor and the target rotation speed of the drive wheel in detection of the slip.Type: ApplicationFiled: November 22, 2019Publication date: August 6, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naruto YAMANE, Kazuya OKUMURA, Hideki KUBONOYA, Fumiki TANAHASHI
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Patent number: 10661779Abstract: A control system for a hybrid vehicle configured to generate a required power continuously even if a large power is required frequently. An operating mode of the hybrid vehicle is selected from HV mode and EV mode, and in the hybrid vehicle, a drive power established by generating maximum output power of the engine is smaller than a drive power established by supplying a maximum electric power to the motor from the electric storage device. A controller is configured to shift the operating mode from the EV mode to the HV mode when an SOC level of a battery falls below a threshold level, and to raise the threshold level when a required running condition in the electric vehicle mode is a condition that cannot be achieved by the engine without operating the motor given that the hybrid vehicle is propelled in the hybrid mode.Type: GrantFiled: October 9, 2018Date of Patent: May 26, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tadashi Fujiyoshi, Junichi Deguchi, Akihiro Fujimoto, Hideki Kubonoya
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Publication number: 20200158216Abstract: Provided are a gear train and a vehicle installing the gear train. The gear train is configured to transmit power from a rotating electrical machine to a driving wheel through a differential and a drive shaft. The gear train includes a plurality of shafts on a plurality of axes lying different from each other and a plurality of gears that is disposed respectively on the plurality of shafts. At least one of the plurality of gears is an internal gear.Type: ApplicationFiled: November 14, 2019Publication date: May 21, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akira Hibino, Hideki Kubonoya, Hideaki Komada
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Patent number: 10457266Abstract: A series hybrid drive unit that is downsized while improving power transmission efficiency. In the series hybrid drive unit, a generator is driven by an engine, and a motor is operated by electricity generated by the generator. Torque generated by the generator is delivered to drive wheels through a final reduction unit. An input member that is rotated by a torque of the engine, and that is arranged parallel to a rotational center axis Og of the generator. The generator and the motor are arranged parallel to each other while keeping a predetermined clearance, and the final reduction unit is arranged parallel to the motor. The input member and the generator are connected through a first wrapping transmission mechanism, and torque of the motor is transmitted to a final reduction unit through a second wrapping transmission mechanism.Type: GrantFiled: June 1, 2018Date of Patent: October 29, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya Kodama, Akira Murakami, Hideki Kubonoya
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Publication number: 20190267924Abstract: A controller for a switched reluctance motor, which includes a rotor, a stator, and coils wound around the stator and which is mounted on a vehicle as a traveling drive source, the controller including: a control unit performing regenerative control to apply a positive voltage and a negative voltage to the coils so that a current value of the coils becomes a first target current value in a predetermined regenerative region. Further, when the battery charge state value is a predetermined value or more, the control unit reduces a section where a negative voltage is applied to the coils to be narrower than that in a case where a battery charge state value is less than the predetermined value.Type: ApplicationFiled: February 15, 2019Publication date: August 29, 2019Inventors: Junichi Deguchi, Hideki Kubonoya, Tadashi Fujiyoshi, Yuki Iwama
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Publication number: 20190193578Abstract: An electric vehicle includes front-wheel electric motor and rear-wheel electric motor driving front and rear wheels, respectively; a control unit controlling driving of those electric motors. Further, one of the electric motors is a permanent-magnet motor and the other is a magnetless motor, a maximum output of the permanent-magnet motor is smaller than a maximum output of the magnetless motor, and the control unit includes: a first drive control unit configured to drive the permanent-magnet motor when vehicle speed is in a first vehicle-speed range; and a second drive control unit configured to drive only the magnetless motor when the vehicle speed is in a second vehicle speed range, vehicle speeds in the second vehicle speed range are greater than vehicle speeds in the first vehicle-speed range.Type: ApplicationFiled: December 11, 2018Publication date: June 27, 2019Inventors: Tadashi Fujiyoshi, Junichi Deguchi, Hideki Kubonoya
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Patent number: 10309533Abstract: A shift controller for a vehicle includes a shift switching unit, a rotation restricting element, and an electronic control unit. The electronic control unit is configured to: acquire a count value corresponding to a degree of rotation of an actuator; set a rotational position of the actuator when the count value does not change by restricting rotation of the actuator using the rotation restricting element as a reference position of the actuator corresponding to the predetermined shift position; and interrupt setting the reference position of the actuator and restart setting the reference position of the actuator when the rotation of the actuator is restricted and a supply voltage to the actuator is equal to or lower than a predetermined first voltage determination value or a variation in the count value while the rotation of the actuator is restricted is equal to or greater than a predetermined value.Type: GrantFiled: August 4, 2017Date of Patent: June 4, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Kamada, Hideki Kubonoya, Koji Sakaguchi, Yusaku Kawaguchi
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Publication number: 20190158009Abstract: A controller for a switched reluctance motor is provided. The switched reluctance motor includes a rotor, a stator, and a coil wound on the stator. The switched reluctance motor is mounted on a vehicle as a drive source for propelling the vehicle. The controller includes an electronic control unit. The electronic control unit is configured to execute first control for exciting the coil at a first current value in a first exciting range. The electronic control unit is configured to, when the electronic control unit determines that the vehicle is not able to start moving even when the electronic control unit executes the first control, execute second control for exciting the coil at a second current value larger than the first current value in a second exciting range narrower than the first exciting range.Type: ApplicationFiled: November 9, 2018Publication date: May 23, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Junichi DEGUCHI, Hideki KUBONOYA, Tadashi FUJIYOSHI
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Publication number: 20190105993Abstract: A control system for a hybrid vehicle configured to generate a required power continuously even if a large power is required frequently. An operating mode of the hybrid vehicle is selected from HV mode and EV mode, and in the hybrid vehicle, a drive power established by generating maximum output power of the engine is smaller than a drive power established by supplying a maximum electric power to the motor from the electric storage device. A controller is configured to shift the operating mode from the EV mode to the HV mode when an SOC level of a battery falls below a threshold level, and to raise the threshold level when a required running condition in the electric vehicle mode is a condition that cannot be achieved by the engine without operating the motor given that the hybrid vehicle is propelled in the hybrid mode.Type: ApplicationFiled: October 9, 2018Publication date: April 11, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tadashi FUJIYOSHI, Junichi DEGUCHI, Akihiro FUJIMOTO, Hideki KUBONOYA
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Publication number: 20190084373Abstract: A heat exchange system for a vehicle including a battery, an electric motor, and a transmission system is provided. The heat exchange system includes a heat pump, and a heat exchanger. The heat pump is used for air conditioning. The heat pump includes an electric compressor that compresses a refrigerant. The electric compressor is configured to be driven with electric power from the battery. The heat exchanger is configured to exchange heat between the refrigerant and lubricating oil that lubricates the transmission system.Type: ApplicationFiled: September 7, 2018Publication date: March 21, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoshi TOMINAGA, Daisuke TOKOZAKURA, Hideki KUBONOYA
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Publication number: 20190009770Abstract: A series hybrid drive unit that is downsized while improving power transmission efficiency. In the series hybrid drive unit, a generator is driven by an engine, and a motor is operated by electricity generated by the generator. Torque generated by the generator is delivered to drive wheels through a final reduction unit. An input member that is rotated by a torque of the engine, and that is arranged parallel to a rotational center axis Og of the generator. The generator and the motor are arranged parallel to each other while keeping a predetermined clearance, and the final reduction unit is arranged parallel to the motor. The input member and the generator are connected through a first wrapping transmission mechanism, and torque of the motor is transmitted to a final reduction unit through a second wrapping transmission mechanism.Type: ApplicationFiled: June 1, 2018Publication date: January 10, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya KODAMA, Akira MURAKAMI, Hideki KUBONOYA