Patents by Inventor Yuuji FUJIKAWA

Yuuji FUJIKAWA 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).

  • Abnormality detection device, abnormality detection method, and abnormality detection system
    Patent number: 10526991
    Abstract: An abnormality detection device includes: an opening degree acquisition unit, which acquires a plurality of opening degree data indicating an opening degree of a valve provided in a vehicle, the opening degree being measured during a certain period; an integration unit, which calculates an integrated value of a plurality of differences by integrating the plurality of differences between a plurality of opening degree actual measurement values indicated by the plurality of opening degree data acquired by the opening degree acquisition unit and an opening degree target value of the valve; and a determination unit, which determines that there is an abnormality in the vehicle when the integrated value integrated by the integration unit is higher than a certain value.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: January 7, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Naotoshi Komeno, Katsushi Shidomi, Ryousuke Akimoto, Yuuji Fujikawa
  • ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION METHOD, AND ABNORMALITY DETECTION SYSTEM
    Publication number: 20190120182
    Abstract: An abnormality detection device includes an intake amount acquisition unit, which acquires intake amount data indicating an intake amount when an EGR valve is being in a certain state, the intake amount being measured at a plurality of different times, a storage unit, which stores a plurality of the intake amount data acquired by the intake amount acquisition unit, in association with a time at which the intake amount is measured, and an abnormality detection unit, which detects an abnormality of the EGR valve based on a changing tendency of a plurality of the intake amounts measured during a certain period.
    Type: Application
    Filed: March 31, 2017
    Publication date: April 25, 2019
    Inventors: Naotoshi KOMENO, Katsushi SHIDOMI, Yuuji FUJIKAWA
  • ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION METHOD, AND ABNORMALITY DETECTION SYSTEM
    Publication number: 20190120158
    Abstract: An abnormality detection device includes: an opening degree acquisition unit, which acquires a plurality of opening degree data indicating an opening degree of a valve provided in a vehicle, the opening degree being measured during a certain period; an integration unit, which calculates an integrated value of a plurality of differences by integrating the plurality of differences between a plurality of opening degree actual measurement values indicated by the plurality of opening degree data acquired by the opening degree acquisition unit and an opening degree target value of the valve; and a determination unit, which determines that there is an abnormality in the vehicle when the integrated value integrated by the integration unit is higher than a certain value.
    Type: Application
    Filed: March 31, 2017
    Publication date: April 25, 2019
    Inventors: Naotoshi KOMENO, Katsushi SHIDOMI, Ryousuke AKIMOTO, Yuuji FUJIKAWA