Patents by Inventor Atsushi Tezuka

Atsushi Tezuka 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: 11007996
    Abstract: A vehicle control device includes a motor, a clutch and a control unit. The motor is configured to apply torque to a power transmission path between an engine and a drive wheel. The clutch is disposed between the engine and the drive wheel. The control unit stops fuel injection of the engine when the engine is greater than or equal to a prescribed engine rotational speed during deceleration, and restarts the fuel injection after disengaging the clutch, and then stops the power running of the motor after resuming the fuel injection of the engine. The control unit drives the motor to carry out power running such that a deceleration of the vehicle becomes less than or equal to a prescribed value when fuel injection of the engine is stopped.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: May 18, 2021
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akifumi Koishi, Tomoyuki Koike, Atsushi Tezuka
  • Patent number: 10804733
    Abstract: A power supply system that is mountable on a vehicle has a lead-acid storage battery connected to an electrical load, a lithium-ion storage battery having different charge and discharge characteristics form the lead-acid storage battery, and connected in parallel with the lead-acid storage battery with respect to the electrical load, a power generator configured to charge the lead-acid storage battery and the lithium-ion storage battery, and a controller configured to drive the power generator based on a relationship between a discharge current of the lead-acid storage battery and a discharge current of the lithium-ion storage battery.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: October 13, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoyuki Koike, Akifumi Koishi, Masahiko Tahara, Munemitsu Watanabe, Atsushi Tezuka, Terumasa Tsuchiya
  • Patent number: 10784697
    Abstract: A vehicle power supply control method includes switching, when a constant voltage is required of a power supply circuit in generating electric power by a power generator, the power supply circuit being connected to a primary storage battery and configured to be connected to a secondary storage battery that has a lower internal resistance than that of the primary storage battery, between connection of the secondary storage battery to the power supply circuit and disconnection of the secondary storage battery from the power supply circuit depending on the required constant voltage, current output to the power supply circuit by the power generator, and a state of charge of the secondary storage battery.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 22, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akifumi Koishi, Masahiko Tahara, Atsushi Tezuka, Tomoyuki Koike, Munemitsu Watanabe, Terumasa Tsuchiya
  • Patent number: 10753367
    Abstract: Provided is a mounting structure, including: an impeller including: a main body portion having a through hole; a plurality of blades provided to an outer peripheral surface of the main body portion; and a boss portion, which is a part of the main body portion, and protrudes toward one end side of the shaft with respect to the plurality of blades; a small-diameter portion, which is a part of the shaft; a first large-diameter portion, which is a part of the shaft, is located on another end side of the shaft with respect to the small-diameter portion; and a small-inner-diameter portion of the through hole, which is formed on a radially inner side of the boss portion, and has an inner diameter smaller than an inner diameter of a part of the through hole which is opposed to the first large-diameter portion in a radial direction.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: August 25, 2020
    Assignee: IHI Corporation
    Inventors: Yutaka Uneura, Kenji Bunno, Yuichi Daito, Shinichi Kaneda, Kenichi Segawa, Atsushi Tezuka
  • Patent number: 10632944
    Abstract: A control method is performed to control first and second storage devices that are connected in parallel to an electric generator in which the second storage device has a lower internal resistance than that of the first storage device. In a case where a driver has requested automated driving during charging of the first storage device (e.g., a lead-acid battery) in a state in which a generator and the second storage device (e.g., a lithium-ion battery) are disconnected, the generator and the second storage device are electrically connected even when a charge ratio of the lead-acid battery is less than a prescribed percentage. In a case where the driver has not requested the automated driving, the generator and the second storage device are electrically connected after the charge ratio of the first storage device has reached the prescribed percentage.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: April 28, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Atsushi Tezuka, Tomoyuki Koike, Akifumi Koishi
  • Patent number: 10510258
    Abstract: A vehicle control method is provided for the suppression of electric power supplied from a battery to other electrical equipment in the event an alternator fails during automatic driving by use of automatic driving electrical equipment. The vehicle control method includes detecting surrounding information of the vehicle in an event the alternator fails during automatic driving by use of the automatic driving electrical equipment, estimating electric power to be consumed by the automatic driving electrical equipment until the vehicle stops based on a plan for stopping the vehicle in a safe location in accordance with the surrounding information that was detected, and reducing the electric power supplied from the battery to the other electrical equipment apart from the automatic driving electrical equipment as the estimated amount of electric power increases.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 17, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akifumi Koishi, Tomoyuki Koike, Atsushi Tezuka
  • Publication number: 20190359200
    Abstract: A vehicle control device includes a motor, a clutch and a control unit. The motor is configured to apply torque to a power transmission path between an engine and a drive wheel. The clutch is disposed between the engine and the drive wheel. The control unit stops fuel injection of the engine when the engine is greater than or equal to a prescribed engine rotational speed during deceleration, and restarts the fuel injection after disengaging the clutch, and then stops the power running of the motor after resuming the fuel injection of the engine. The control unit drives the motor to carry out power running such that a deceleration of the vehicle becomes less than or equal to a prescribed value when fuel injection of the engine is stopped.
    Type: Application
    Filed: September 15, 2016
    Publication date: November 28, 2019
    Inventors: Akifumi KOISHI, Tomoyuki KOIKE, Atsushi TEZUKA
  • Publication number: 20190256019
    Abstract: A control method is performed to control first and second storage devices that are connected in parallel to an electric generator in which the second storage device has a lower internal resistance than that of the first storage device. In a case where a driver has requested automated driving during charging of the first storage device (e.g., a lead-acid battery) in a state in which a generator and the second storage device (e.g., a lithium-ion battery) are disconnected, the generator and the second storage device are electrically connected even when a charge ratio of the lead-acid battery is less than a prescribed percentage. In a case where the driver has not requested the automated driving, the generator and the second storage device are electrically connected after the charge ratio of the first storage device has reached the prescribed percentage.
    Type: Application
    Filed: October 28, 2016
    Publication date: August 22, 2019
    Inventors: Atsushi TEZUKA, Tomoyuki KOIKE, Akifumi KOISHI
  • Patent number: 10364759
    Abstract: A vehicle traveling control method includes detecting a remaining fuel amount in a fuel tank including a fuel chamber in which a suction port of a fuel pump is disposed for sucking fuel to be supplied to an engine, the fuel tank being configured to generate negative pressure for sucking fuel to the fuel chamber by ejecting a part of fuel sucked by the fuel pump into the fuel chamber via a fuel line, permitting, when a predetermined condition is satisfied, inertial traveling during which a vehicle travels, with the engine kept stopped, operating, when the detected remaining fuel amount is less than a first threshold, the fuel pump despite the engine stopped owing to the inertial traveling, and prohibiting stop of the engine when the detected remaining fuel amount is less than a second threshold smaller than the first threshold.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: July 30, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoyuki Koike, Munemitsu Watanabe, Akifumi Koishi, Terumasa Tsuchiya, Masahiko Tahara, Atsushi Tezuka
  • Publication number: 20190213888
    Abstract: A vehicle control method is provided for the suppression of electric power supplied from a battery to other electrical equipment in the event an alternator fails during automatic driving by use of automatic driving electrical equipment. The vehicle control method includes detecting surrounding information of the vehicle in an event the alternator fails during automatic driving by use of the automatic driving electrical equipment, estimating electric power to be consumed by the automatic driving electrical equipment until the vehicle stops based on a plan for stopping the vehicle in a safe location in accordance with the surrounding information that was detected, and reducing the electric power supplied from the battery to the other electrical equipment apart from the automatic driving electrical equipment as the estimated amount of electric power increases.
    Type: Application
    Filed: September 15, 2016
    Publication date: July 11, 2019
    Inventors: Akifumi KOISHI, Tomoyuki KOIKE, Atsushi TEZUKA
  • Publication number: 20190103629
    Abstract: A power supply system that is mountable on a vehicle includes a lithium-ion storage battery connected to an electrical load via two paths being a first path and a second path, a power generator capable of charging the lithium-ion storage battery, a first switch provided on the first path, an electrical resistance element provided on the second path, and a controller configured to control on/off of the power generator and perform on/off control of the first switch. According to a voltage increase request from the electrical load, the controller is configured to turn of the first switch such that a power supply to the lithium-ion storage battery through the first path from the power generator is cut.
    Type: Application
    Filed: March 13, 2017
    Publication date: April 4, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomoyuki Koike, Munemitsu Watanabe, Akifumi Koishi, Masahiko Tahara, Terumasa Tsuchiya, Atsushi Tezuka
  • Publication number: 20190044367
    Abstract: A power supply system that is mountable on a vehicle has a lead-acid storage battery connected to an electrical load, a lithium-ion storage battery having different charge and discharge characteristics form the lead-acid storage battery, and connected in parallel with the lead-acid storage battery with respect to the electrical load, a power generator configured to charge the lead-acid storage battery and the lithium-ion storage battery, and a controller configured to drive the power generator based on a relationship between a discharge current of the lead-acid storage battery and a discharge current of the lithium-ion storage battery.
    Type: Application
    Filed: January 10, 2017
    Publication date: February 7, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomoyuki KOIKE, Akifumi KOISHI, Masahiko TAHARA, Munemitsu WATANABE, Atsushi TEZUKA, Terumasa TSUCHIYA
  • Patent number: 10173683
    Abstract: A vehicle control device disengages a clutch provided between an engine and a driving wheel at a brake-off and an accelerator-off during traveling of the vehicle, and stops the engine and carries out inertia traveling. The vehicle control device starts the engine by the push-start by engaging the clutch and by transmitting the power of the driving wheel to the engine, if it is determined that a brake pedal has been depressed during the inertia traveling.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: January 8, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tadashi Iwamoto, Atsushi Tezuka
  • Patent number: 10144373
    Abstract: A power supply system control device for controlling a power supply system including an electric generator, a first electricity storage configured to be charged with and to discharge electric power generated by the electric generator, a second electricity storage configured to be charged with and to discharge the generated electric power, two paths connecting between the first electricity storage and the second electricity storage, a switching unit including a first switch configured to switch between a conductive state and a non-conductive state of one of the paths, and a second switch configured to switch between a conductive state and a non-conductive state of the other of the paths, and an electric load of a vehicle that is connected to the first electricity storage side of the switching unit.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: December 4, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Masahiko Tahara, Terumasa Tsuchiya, Atsushi Tezuka, Tomoyuki Koike, Munemitsu Watanabe, Akifumi Koishi
  • Patent number: 10119513
    Abstract: A power supply system in a vehicle having an idling stop function for executing an automatic stop and an automatic restart on an engine has a power generator, a first storage unit that can be charged with and can discharge generated power generated by the power generator, a second storage unit that can be charged with and can discharge the generated power, two paths connecting the first storage unit and the second storage unit, a switching unit including a first switch for switching one path of the two paths between a conductive condition and a non-conductive condition, and a second switch for switching another path of the two paths between a conductive condition and a non-conductive condition, and an engine restarter connected to either the first storage unit side or the second storage unit side of the switching unit in order to start the engine during the automatic restart.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 6, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Masahiko Tahara, Atsushi Tezuka, Tomoyuki Koike, Munemitsu Watanabe, Akifumi Koishi, Terumasa Tsuchiya
  • Publication number: 20180290557
    Abstract: A vehicle power supply control device includes a main battery connected to a power supply circuit, a sub-battery having an internal resistance lower than an internal resistance of the main battery, an electric generator which is connected to the power supply circuit and has a controllable power generation voltage, and a connection controller configured to connect the sub-battery to the power supply circuit after adjusting a voltage on a side of the power supply circuit close to a voltage of the sub-battery by controlling the power generation voltage of the electric generator. The main battery is configured to be disconnectable from the power supply circuit. The connection controller is configured to disconnect the main battery from the power supply circuit first, then control the power generation voltage of the electric generator to adjust the power generation voltage close to the voltage of the sub-battery.
    Type: Application
    Filed: October 2, 2015
    Publication date: October 11, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Akifumi Koishi, Masahiko Tahara, Atsushi Tezuka, Tomoyuki Koike, Munemitsu Watanabe, Terumasa Tsuchiya
  • Publication number: 20180265021
    Abstract: A vehicle power supply control method includes switching, when a constant voltage is required of a power supply circuit in generating electric power by a power generator, the power supply circuit being connected to a primary storage battery and configured to be connected to a secondary storage battery that has a lower internal resistance than that of the primary storage battery, between connection of the secondary storage battery to the power supply circuit and disconnection of the secondary storage battery from the power supply circuit depending on the required constant voltage, current output to the power supply circuit by the power generator, and a state of charge of the secondary storage battery.
    Type: Application
    Filed: September 25, 2015
    Publication date: September 20, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Akifumi Koishi, Masahiko Tahara, Atsushi Tezuka, Tomoyuki Koike, Munemitsu Watanabe, Terumasa Tsuchiya
  • Publication number: 20180266432
    Abstract: Provided is a mounting structure, including: an impeller including: a main body portion having a through hole; a plurality of blades provided to an outer peripheral surface of the main body portion; and a boss portion, which is a part of the main body portion, and protrudes toward one end side of the shaft with respect to the plurality of blades; a small-diameter portion, which is a part of the shaft; a first large-diameter portion, which is a part of the shaft, is located on another end side of the shaft with respect to the small-diameter portion; and a small-inner-diameter portion of the through hole, which is formed on a radially inner side of the boss portion, and has an inner diameter smaller than an inner diameter of a part of the through hole which is opposed to the first large-diameter portion in a radial direction.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 20, 2018
    Applicant: IHI Corporation
    Inventors: Yutaka Uneura, Kenji Bunno, Yuichi Daito, Shinichi Kaneda, Kenichi Segawa, Atsushi Tezuka
  • Publication number: 20180245525
    Abstract: A vehicle traveling control method includes detecting a remaining fuel amount in a fuel tank including a fuel chamber in which a suction port of a fuel pump is disposed for sucking fuel to be supplied to an engine, the fuel tank being configured to generate negative pressure for sucking fuel to the fuel chamber by ejecting a part of fuel sucked by the fuel pump into the fuel chamber via a fuel line, permitting, when a predetermined condition is satisfied, inertial traveling during which a vehicle travels, with the engine kept stopped, operating, when the detected remaining fuel amount is less than a first threshold, the fuel pump despite the engine stopped owing to the inertial traveling, and prohibiting stop of the engine when the detected remaining fuel amount is less than a second threshold smaller than the first threshold.
    Type: Application
    Filed: August 20, 2015
    Publication date: August 30, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomoyuki Koike, Munemitsu Watanabe, Akifumi Koishi, Terumasa Tsuchiya, Masahiko Tahara, Atsushi Tezuka
  • Publication number: 20180147915
    Abstract: A vehicle air-conditioning system that performs air heating by utilizing heat of a coolant that cools an engine includes a circulation flow passage connecting a coolant inflow portion and a coolant discharge portion of the engine, a heating heater core disposed in the circulation flow passage, a radiator disposed in the circulation flow passage, a radiator fan configured to supply an air to the radiator, and a controller configured to control the radiator fan. When a water pump configured to pressure-feed the coolant is stopped during automatic stop of the engine, the controller drives to rotate the radiator fan during automatic stop of the engine so as to let convection take place in the coolant in the radiator and supply the coolant to the heating heater core.
    Type: Application
    Filed: May 28, 2015
    Publication date: May 31, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Atsushi Tezuka, Masahiko Tahara, Tomoyuki Koike, Munemitsu Watanabe, Terumasa Tsuchiya, Akifumi Koishi