Patents by Inventor Yuki YABUSHITA

Yuki YABUSHITA 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).

  • Control device and control method for internal combustion engine
    Patent number: 11698018
    Abstract: A control device for an internal combustion engine including an upstream cleaning device and a downstream cleaning device that are provided in an exhaust gas passage and a temperature sensor that detects a temperature of exhaust gas between the upstream cleaning device and the downstream cleaning device is provided. The control device includes a first temperature estimating unit configured to estimate a temperature of the downstream cleaning device from the temperature of exhaust gas detected by the temperature sensor and a second temperature estimating unit configured to estimate a temperature of the downstream cleaning device without using the temperature of exhaust gas detected by the temperature sensor. An abnormality determining process for the upstream cleaning device is performed when at least the temperature of the downstream cleaning device estimated by the second temperature estimating unit is equal to or greater than a predetermined threshold value.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: July 11, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sohichi Imai, Yuya Yoshikawa, Kazuhiro Hasegawa, Yoshifumi Matsuda, Masanao Idogawa, Takahiro Uchida, Yuki Yabushita
  • CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20220403767
    Abstract: A control device for an internal combustion engine including an upstream cleaning device and a downstream cleaning device that are provided in an exhaust gas passage and a temperature sensor that detects a temperature of exhaust gas between the upstream cleaning device and the downstream cleaning device is provided. The control device includes a first temperature estimating unit configured to estimate a temperature of the downstream cleaning device from the temperature of exhaust gas detected by the temperature sensor and a second temperature estimating unit configured to estimate a temperature of the downstream cleaning device without using the temperature of exhaust gas detected by the temperature sensor. An abnormality determining process for the upstream cleaning device is performed when at least the temperature of the downstream cleaning device estimated by the second temperature estimating unit is equal to or greater than a predetermined threshold value.
    Type: Application
    Filed: May 20, 2022
    Publication date: December 22, 2022
    Inventors: Sohichi IMAI, Yuya YOSHIKAWA, Kazuhiro HASEGAWA, Yoshifumi MATSUDA, Masanao IDOGAWA, Takahiro UCHIDA, Yuki YABUSHITA