Patents by Inventor Hidekazu Nawata

Hidekazu Nawata 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: 20150344023
    Abstract: A control unit for a hybrid vehicle determines whether warming of an engine is insufficient in an outside electric power feed mode. When the warming of the engine is insufficient, it is determined whether current time is in an initial period of electric power feed. When the current time is in the initial period of the electric power feed, only electric power of an electric storage device is supplied to the outside in a state that the engine is off. When the current time is not in the initial period of the electric power feed, the engine is turned on, and only electric power generated in a motor is supplied to the outside. When the warming of the engine is sufficient, the electric power generated in the motor, the electric power of the electric storage device, or both of them are supplied to the outside.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 3, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshio INOUE, Shunsuke FUSHIKI, Tomoaki HONDA, Keita FUKUI, Hidekazu NAWATA, Yuta NIWA, Taichi OHSAWA
  • Publication number: 20150175008
    Abstract: Vehicle is configured to supply power to outside of a vehicle. Vehicle includes an engine, a battery, a first MG configured to generate power with use of motive power of the engine, a switching unit configured to switch power supplied to outside of the vehicle between power generated by the first MG and power stored in the battery, an ECU configured to control the switching unit, and a detection unit configured to allow the ECU to determine whether or not the vehicle is located indoors. When the ECU determines that the vehicle is located indoors based on an output from the detection unit, it controls the switching unit so that the power supplied to outside of the vehicle to be switched from power generated by the first MG to power stored in the battery.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 25, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomoaki HONDA, Toshio INOUE, Shunsuke FUSHIKI, Keita FUKUI, Hidekazu NAWATA, Yuta NIWA, Taichi OSAWA
  • Patent number: 8983699
    Abstract: A vehicle provided with a motor generator as a driving source includes an engine and a catalyst for purifying gas exhausted from the engine. The engine is controlled in one control mode of a CS mode and a CD mode in which opportunity for operation of the engine is limited compared to in the CS mode. In the CS mode, the temperature of the catalyst is increased to be equal to or higher than a prescribed activating temperature. The temperature of the catalyst is increased to be higher than the activating temperature before the control mode is changed from the CS mode to the CD mode.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidekazu Nawata, Shunsuke Fushiki, Makoto Yamazaki
  • Patent number: 8972148
    Abstract: A vehicle provided with a motor generator as a driving source includes a battery to supply electric power to the motor generator, an engine, and an ECU to control the vehicle in one of a CS mode and a CD mode in which opportunity for operation of the engine is limited compared to in the CS mode. The ECU controls the engine in accordance with a condition different from a condition used to control the engine in the CS mode, if the engine is started at least due to decrease in a state of charge of the battery while the vehicle is controlled in the CD mode.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: March 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidekazu Nawata, Shunsuke Fushiki, Makoto Yamazaki
  • Publication number: 20130304291
    Abstract: A vehicle provided with a motor generator as a driving source includes an engine and a catalyst for purifying gas exhausted from the engine. The engine is controlled in one control mode of a CS mode and a CD mode in which opportunity for operation of the engine is limited compared to in the CS mode. In the CS mode, the temperature of the catalyst is increased to be equal to or higher than a prescribed activating temperature. The temperature of the catalyst is increased to be higher than the activating temperature before the control mode is changed from the CS mode to the CD mode.
    Type: Application
    Filed: February 1, 2011
    Publication date: November 14, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidekazu Nawata, Shunsuke Fushiki, Makoto Yamazaki
  • Publication number: 20120310458
    Abstract: A vehicle provided with a motor generator as a driving source includes a battery to supply electric power to the motor generator, an engine, and an ECU to control the vehicle in one of a CS mode and a CD mode in which opportunity for operation of the engine is limited compared to in the CS mode. The ECU controls the engine in accordance with a condition different from a condition used to control the engine in the CS mode, if the engine is started at least due to decrease in a state of charge of the battery while the vehicle is controlled in the CD mode.
    Type: Application
    Filed: March 30, 2011
    Publication date: December 6, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidekazu Nawata, Shunsuke Fushiki, Makoto Yamazaki