Patents by Inventor Yousuke Hashimoto

Yousuke Hashimoto 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 diagnosis device for exhaust gas recirculation device
    Patent number: 8397700
    Abstract: An abnormality diagnosis device for an exhaust gas recirculation device in an internal combustion engine is provided. The exhaust gas recirculation device has an exhaust gas recirculation valve that adjusts the amount of recirculation exhausts gas returned from an exhaust passage to an intake passage of the engine. The abnormality diagnosis device includes a control section that changes the exhaust gas recirculation valve to diagnose an abnormality in the exhaust gas recirculation device. When the abnormality diagnosis execution condition is met, the control section, prior to the execution of the valve closing operation, inhibits the opening degree adjustment and executes a valve opening process to increase the opening degree of the valve from the opening degree at the time to a second target opening degree greater than the first target opening degree.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 19, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichiro Kawase, Yousuke Hashimoto, Keisuke Yamashita
  • ABNORMALITY DIAGNOSIS DEVICE FOR EXHAUST GAS RECIRCULATION DEVICE
    Publication number: 20100294253
    Abstract: An abnormality diagnosis device for an exhaust gas recirculation device in an internal combustion engine is provided. The exhaust gas recirculation device has an exhaust gas recirculation valve that adjusts the amount of recirculation exhausts gas returned from an exhaust passage to an intake passage of the engine. The abnormality diagnosis device includes a control section that changes the exhaust gas recirculation valve to diagnose an abnormality in the exhaust gas recirculation device. When the abnormality diagnosis execution condition is met, the control section, prior to the execution of the valve closing operation, inhibits the opening degree adjustment and executes a valve opening process to increase the opening degree of the valve from the opening degree at the time to a second target opening degree greater than the first target opening degree.
    Type: Application
    Filed: December 11, 2008
    Publication date: November 25, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichiro Kawase, Yousuke Hashimoto, Keisuke Yamashita