Patents by Inventor Shoji Nakahara

Shoji Nakahara 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).

  • Vehicle driving apparatus
    Patent number: 10926647
    Abstract: A vehicle driving apparatus includes a first motor, a second motor, and a planetary mechanism, and obtains a driving force by combining motive forces obtained from the first motor and the second motor by a planetary gear of the planetary mechanism. The vehicle driving apparatus includes at least one of a design value and a control quantity in which a frequency ratio between a sound generated by a rotation of the first motor and a sound generated by a rotation of the second motor satisfies a reduction condition of dissonance.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: February 23, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Teruhiko Nakazawa, Ryoichi Hibino, Makoto Kusakabe, Yasumitsu Osada, Shoji Nakahara, Hiroyuki Nishizawa, Yasuhiro Torii
  • VEHICLE DRIVING APPARATUS
    Publication number: 20190329658
    Abstract: A vehicle driving apparatus includes a first motor, a second motor, and a planetary mechanism, and obtains a driving force by combining motive forces obtained from the first motor and the second motor by a planetary gear of the planetary mechanism. The vehicle driving apparatus includes at least one of a design value and a control quantity in which a frequency ratio between a sound generated by a rotation of the first motor and a sound generated by a rotation of the second motor satisfies a reduction condition of dissonance.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 31, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Teruhiko NAKAZAWA, Ryoichi HIBINO, Makoto KUSAKABE, Yasumitsu OSADA, Shoji NAKAHARA, Hiroyuki NISHIZAWA, Yasuhiro TORII
  • Control system for internal combustion engine
    Patent number: 6994077
    Abstract: Cylinders of a diesel engine 1 are provided with cylinder pressure sensors 29a to 29d for detecting combustion chamber pressures. An electronic control unit (ECU) 20 of the engine selects optimum combustion parameters in accordance with a fuel injection mode of fuel injectors 10a to 10d of the engine and a combustion mode determined by the amount of EGR gas supplied from the EGR valve 35 from among a plurality of types of combustion parameters expressing the combustion state of the engine calculated based on the cylinder pressure sensor output and feedback controls the fuel injection amount and fuel injection timing so that the values of the combustion parameters match target values determined in accordance with the engine operating conditions. Due to this, the engine combustion state is controlled to the optimum state at all times regardless of the fuel injection mode or combustion mode.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: February 7, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Nobuki Kobayashi, Shizuo Sasaki, Taro Aoyama, Kouji Yoshizaki, Hiroki Murata, Yoshiki Hashimoto, Kazuhisa Inagaki, Kiyomi Nakakita, Shoji Nakahara, Yoshihiro Hotta
  • CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
    Publication number: 20050229903
    Abstract: Cylinders of a diesel engine 1 are provided with cylinder pressure sensors 29a to 29d for detecting combustion chamber pressures. An electronic control unit (ECU) 20 of the engine selects optimum combustion parameters in accordance with a fuel injection mode of fuel injectors 10a to 10d of the engine and a combustion mode determined by the amount of EGR gas supplied from the EGR valve 35 from among a plurality of types of combustion parameters expressing the combustion state of the engine calculated based on the cylinder pressure sensor output and feedback controls the fuel injection amount and fuel injection timing so that the values of the combustion parameters match target values determined in accordance with the engine operating conditions. Due to this, the engine combustion state is controlled to the optimum state at all times regardless of the fuel injection mode or combustion mode.
    Type: Application
    Filed: September 8, 2003
    Publication date: October 20, 2005
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Nobuki Kobayashi, Shizuo Sasaki, Taro Aoyama, Kouji Yoshizaki, Hiroki Murata, Yoshiki Hashimoto, Kazuhisa Inagaki, Kiyomi Nakakita, Shoji Nakahara, Yoshihiro Hotta