Patents by Inventor Toshikazu Kato

Toshikazu Kato 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: 11059672
    Abstract: A fire protection door in an open position is present above a traveling path of a transport vehicle. The fire protection door is capable of moving downward from the open position to a closed position along a door trajectory. The transport vehicle includes: a control portion; an area detection portion that detects an interference area, which is an area in which a portion of the transport vehicle in the traveling path overlaps the door trajectory; and a descent detection portion that detects a descent of the fire protection door. The control portion performs a retraction control such that the transport vehicle travels to the outside of the interference area when the descent detection portion has detected a descent of the fire protection door in a state in which the transport vehicle is located in the interference area.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: July 13, 2021
    Assignee: Daifuku Co., Ltd.
    Inventors: Yuso Ogawa, Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Publication number: 20210087991
    Abstract: The occurrence of the misfire having a level at which exhaust purifying function of a catalyst is impaired (OT-level misfire) is detected. Upon the detection of the OT-level misfire, basic OT risk from the misfire is multiplied by a correction coefficient corresponding to the accumulated PM amount on the catalyst. The basic OT risk from the misfire is a basic value of OT risk from the misfire which is set based on the operating condition of the engine. The correction coefficient is set to a smaller value as the accumulated PM amount increases. Therefore, the OT risk from the misfire after the multiplication decreases as the accumulated PM amount increases. When a predetermined judgement condition with the OT risk from the misfire is established, it is judged that the misfire having the level occurs.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya HISHIDA, Toshikazu KATO, Hayato IMAI
  • Patent number: 10934959
    Abstract: The occurrence of the misfire having a level at which exhaust purifying function of a catalyst is impaired (OT-level misfire) is detected. Upon the detection of the OT-level misfire, basic OT risk from the misfire is multiplied by a correction coefficient corresponding to the accumulated PM amount on the catalyst. The basic OT risk from the misfire is a basic value of OT risk from the misfire which is set based on the operating condition of the engine. The correction coefficient is set to a smaller value as the accumulated PM amount increases. Therefore, the OT risk from the misfire after the multiplication decreases as the accumulated PM amount increases. When a predetermined judgement condition with the OT risk from the misfire is established, it is judged that the misfire having the level occurs.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: March 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Hishida, Toshikazu Kato, Hayato Imai
  • Patent number: 10900434
    Abstract: The occurrence of the misfire having a level at which exhaust purifying function of a catalyst is impaired (OT-level misfire) is detected. Upon the detection of the OT-level misfire, basic OT risk from the misfire is multiplied by a correction coefficient corresponding to the accumulated PM amount on the catalyst. The basic OT risk from the misfire is a basic value of OT risk from the misfire which is set based on the operating condition of the engine. The correction coefficient is set to a smaller value as the accumulated PM amount increases. Therefore, the OT risk from the misfire after the multiplication decreases as the accumulated PM amount increases. When a predetermined judgement condition with the OT risk from the misfire is established, it is judged that the misfire having the level occurs.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: January 26, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Hishida, Toshikazu Kato, Hayato Imai
  • Publication number: 20200342697
    Abstract: A storage device (301) stores a failure correspondence table (405) that indicates a countermeasure for a time when a failure occurs in an apparatus mounted on a vehicle (100). A failure countermeasure update unit (404) updates the countermeasure indicated in the failure correspondence table (405) in accordance with a change in a traveling environment of the vehicle (100).
    Type: Application
    Filed: March 5, 2018
    Publication date: October 29, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toshikazu KATO, Hitoshi YAMAMOTO
  • Patent number: 10766513
    Abstract: An article transport vehicle includes an obstacle sensor having a detection area that includes at least the width of the own vehicle and that expands in the advancing direction, controls the travel of the own vehicle, based on as front inter-object distance corresponding to own-vehicle position information indicating a position of the own vehicle and front object position information indicating a position on a track of a front object that is located in front of the own vehicle and whose position on the track is specified, and sets a length of the detection area E along the advancing direction of the obstacle sensor to be variable according to the front inter-object distance such that the length is less than the front inter-object distance.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 8, 2020
    Assignee: Daifuku Co., Ltd.
    Inventors: Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Publication number: 20200215874
    Abstract: A controller for an engine includes processing circuitry configured to perform fuel cut-off for regenerating the filter by burning fine particulate matter collected in the filter. The processing circuitry is configured to perform an interruption process for interrupting the fuel cut-off in a case in which warming of the passenger compartment is requested when the fuel cut-off is being performed and an engine coolant temperature, which is a temperature of the engine coolant, becomes lower than or equal to a predetermined temperature after the fuel cut-off is started.
    Type: Application
    Filed: November 27, 2019
    Publication date: July 9, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke SHIBAMOTO, Toshikazu KATO, Shunichi HARA
  • Publication number: 20190381342
    Abstract: An area is set as an interference area, in which a transport vehicle is located in a state in which a portion of the transport vehicle overlaps a door trajectory which is a movement trajectory of a fire protection door. A control portion that controls a subject vehicle, which is a transport vehicle to be controlled, prohibits the whole subject vehicle from entering the interference area if it is determined, based on another-vehicle information, which is information of a traveling state of another vehicle that is different from the subject vehicle, and information regarding the interference area, that the interference area is present between the another vehicle located forward of the subject vehicle and the subject vehicle, and that a stoppable area is not secured between a rear end position of the another vehicle and the fire protection door.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 19, 2019
    Inventors: Natsuo Takagawa, Toshikazu Kato
  • Publication number: 20190316537
    Abstract: The occurrence of the misfire having a level at which exhaust purifying function of a catalyst is impaired (OT-level misfire) is detected. Upon the detection of the OT-level misfire, basic OT risk from the misfire is multiplied by a correction coefficient corresponding to the accumulated PM amount on the catalyst. The basic OT risk from the misfire is a basic value of OT risk from the misfire which is set based on the operating condition of the engine. The correction coefficient is set to a smaller value as the accumulated PM amount increases. Therefore, the OT risk from the misfire after the multiplication decreases as the accumulated PM amount increases. When a predetermined judgement condition with the OT risk from the misfire is established, it is judged that the misfire having the level occurs.
    Type: Application
    Filed: February 11, 2019
    Publication date: October 17, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya HISHIDA, Toshikazu KATO, Hayato IMAI
  • Patent number: 10239692
    Abstract: A transport vehicle controller causes a travel speed of the corresponding one of the plurality of article transport vehicles to which the transport vehicle controller is provided to be reduced based on position information of corresponding one of the plurality of article transport vehicles to which the transport vehicle controller is provided and the position information on another of the plurality of article transport vehicles if a separation distance between the corresponding one of the plurality of article transport vehicles to which the transport vehicle controller is provided and the another of the plurality of article transport vehicles is less than, or equal to, a set separation distance.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: March 26, 2019
    Assignee: Daifuku Co., Ltd.
    Inventors: Natsuo Takagawa, Toshikazu Kato
  • Publication number: 20190062064
    Abstract: A fire protection door in an open position is present above a traveling path of a transport vehicle. The fire protection door is capable of moving downward from the open position to a closed position along a door trajectory. The transport vehicle includes: a control portion; an area detection portion that detects an interference area, which is an area in which a portion of the transport vehicle in the traveling path overlaps the door trajectory; and a descent detection portion that detects a descent of the fire protection door. The control portion performs a retraction control such that the transport vehicle travels to the outside of the interference area when the descent detection portion has detected a descent of the fire protection door in a state in which the transport vehicle is located in the interference area.
    Type: Application
    Filed: August 30, 2018
    Publication date: February 28, 2019
    Inventors: Yuso Ogawa, Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Publication number: 20180327009
    Abstract: An article transport vehicle includes an obstacle sensor having a detection area that includes at least the width of the own vehicle and that expands in the advancing direction, controls the travel of the own vehicle, based on as front inter-object distance corresponding to own-vehicle position information indicating a position of the own vehicle and front object position information indicating a position on a track of a front object that is located in front of the own vehicle and whose position on the track is specified, and sets a length of the detection area E along the advancing direction of the obstacle sensor to be variable according to the front inter-object distance such that the length is less than the front inter-object distance.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 15, 2018
    Inventors: Natsuo Takagawa, Kazuharu Yoshinaga, Toshikazu Kato, Yusuke Morimoto
  • Patent number: 10065629
    Abstract: A hybrid vehicle includes an internal combustion engine, an electrical storage device, a rotary electric machine, and a controller. The hybrid vehicle travels in a selected one of a charge sustaining mode and a charge depleting mode. Switching from the charge depleting mode to the charge sustaining mode is controlled such that a first state of charge is higher than a second state of charge. In the first state of charge, the controller switches from the charge depleting mode to the charge sustaining mode at the time when operation characteristic of the intake valve is unchangeable to a desired operation characteristic. In the second state of charge there is switching from the charge depleting mode to the charge sustaining mode at the time when the operation characteristic of the intake valve is changeable to a desired operation characteristic.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 4, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryuta Teraya, Toshikazu Kato, Yoshikazu Asami
  • Patent number: 9909512
    Abstract: A hybrid vehicle includes a controller that executes catalyst warm-up control for warming up a catalyst, including first control that operates an internal combustion engine at a first operating point, and second control, after executing the first control, that operates the engine at a second operating point irrespective of driving force required to propel the vehicle. Engine output at the second point is larger than engine output at the first point. Ignition timing of the engine at the time when the first control is executed is controlled to a retarded side with respect to an ignition timing of the engine at the time when the second control is executed. When the second control is executed, at least one of a valve lift of an intake valve and a valve operating angle of the intake valve increases as charging of an electrical storage device is more limited.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: March 6, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Asami, Toshikazu Kato, Ryuta Teraya
  • Publication number: 20180057261
    Abstract: A transport vehicle controller causes a travel speed of the corresponding one of the plurality of article transport vehicles to which the transport vehicle controller is provided to be reduced based on position information of corresponding one of the plurality of article transport vehicles to which the transport vehicle controller is provided and the position information on another of the plurality of article transport vehicles if a separation distance between the corresponding one of the plurality of article transport vehicles to which the transport vehicle controller is provided and the another of the plurality of article transport vehicles is less than, or equal to, a set separation distance.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 1, 2018
    Inventors: Natsuo Takagawa, Toshikazu Kato
  • Patent number: 9889842
    Abstract: A controller of a hybrid vehicle is configured to operate the internal combustion engine with ignition timing of the internal combustion engine during the execution of the first warm-up control for operating the internal combustion engine at a first operating point further on a retard side than ignition timing of the internal combustion engine during the execution of the second warm-up control for operating the internal combustion engine at a second operating point, regardless of the driving force required for traveling after the execution of the first warm up control. The controller is configured to set the output of the internal combustion engine and the operation characteristic of the intake valve in accordance with a predetermined characteristic relationship in which the output of the internal combustion engine and the operation characteristic of the intake valve correspond to each other during the execution of the second warm-up control.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 13, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Asami, Toshikazu Kato, Ryuta Teraya
  • Patent number: 9815452
    Abstract: A hybrid vehicle includes an electric motor, an internal combustion engine, an exhaust emission control device and a controller. The controller is configured to execute catalyst warm-up control for warming up a catalyst of the exhaust emission control device. The catalyst warm-up control includes first control and second control. The first control is control for operating the internal combustion engine at a first operating point. The second control is control for, after the first control is executed, operating the internal combustion engine at a second operating point irrespective of a driving force that is required to propel the hybrid vehicle. An output of the internal combustion engine at the second operating point is larger than an output of the internal combustion engine at the first operating point.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: November 14, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryuta Teraya, Toshikazu Kato, Yoshikazu Asami
  • Patent number: 9789865
    Abstract: The hybrid vehicle includes an internal combustion engine, a rotary electric machine, an electrical storage device and a controller. The controller is configured to execute output control. An opening degree of the throttle valve is controlled in the output control such that, when a temperature of the electrical storage device is lower than a predetermined temperature, the output of the internal combustion engine is reduced below a predetermined output. The controller is further configured to control the variable valve actuating device such that at least one of a valve lift or valve operating angle of the intake valve at the time when the output control is executed is larger than the corresponding at least one of the valve lift or valve operating angle of the intake valve at the time when the output control is not executed.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: October 17, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshikazu Kato, Ryuta Teraya, Yoshikazu Asami
  • Publication number: 20170282893
    Abstract: A hybrid vehicle includes an internal combustion engine, an electrical storage device, a rotary electric machine, and a controller. The internal combustion engine includes a variable valve actuating device. The variable valve actuating device is configured to change an operation characteristic of an intake valve. The electrical storage device is configured to be charged. The rotary electric machine is configured to generate driving force for propelling the hybrid vehicle by using electric power that is supplied from the electrical storage device. The controller is configured to cause the hybrid vehicle to travel in a selected one of a charge sustaining mode and a charge depleting mode. The charge sustaining mode is a mode in which a state of charge of the electrical storage device is kept within a predetermined range. The charge depleting mode is a mode in which consumption of the state of charge is given a higher priority as compared to the charge sustaining mode.
    Type: Application
    Filed: November 3, 2014
    Publication date: October 5, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryuta TERAYA, Toshikazu KATO, Yoshikazu ASAMI
  • Patent number: 9758162
    Abstract: A hybrid vehicle includes an internal combustion engine and a rotary electric machine. The internal combustion engine includes a variable valve actuating device configured to change an operation characteristic of an intake valve. The rotary electric machine is configured to generate driving force for propelling the hybrid vehicle. A controller for the hybrid vehicle includes a traveling control unit and a valve actuation control unit. The traveling control unit executes traveling control for causing the hybrid vehicle to travel by using the driving force of the rotary electric machine while stopping the internal combustion engine. The traveling control unit starts up the internal combustion engine while executing the traveling control. The valve actuation control unit controls the variable valve actuating device.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: September 12, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshikazu Kato, Ryuta Teraya, Yoshikazu Asami