Patents by Inventor Yuichiro KAWAI

Yuichiro KAWAI 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).

  • Hybrid vehicle
    Patent number: 9751524
    Abstract: When a starting point water temperature Twst is equal to or lower than a threshold value Twref1, catalyst warm-up control is executed, and when a cooling water temperature Tw becomes higher than the threshold value Twref1 or an operation time top of an engine becomes equal to or higher than a threshold value topref1, the control of the engine is shifted from the catalyst warm-up control to normal control. When the starting point water temperature Twst is higher than the threshold value Twref1 and is equal to or lower than a threshold value Twref2, PN suppression control is executed, and when the cooling water temperature Tw of the engine becomes higher than the threshold value Twref2 or the operation time top of the engine becomes equal to or higher than a threshold value topref2, the control of the engine is shifted from the PN suppression control to the normal control.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: September 5, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keisuke Morisaki, Takahiro Nishigaki, Daigo Ando, Yuichiro Kawai
  • HYBRID VEHICLE
    Publication number: 20170066435
    Abstract: When a starting point water temperature Twst is equal to or lower than a threshold value Twref1, catalyst warm-up control is executed, and when a cooling water temperature Tw becomes higher than the threshold value Twref1 or an operation time top of an engine becomes equal to or higher than a threshold value topref1, the control of the engine is shifted from the catalyst warm-up control to normal control. When the starting point water temperature Twst is higher than the threshold value Twref1 and is equal to or lower than a threshold value Twref2, PN suppression control is executed, and when the cooling water temperature Tw of the engine becomes higher than the threshold value Twref2 or the operation time top of the engine becomes equal to or higher than a threshold value topref2, the control of the engine is shifted from the PN suppression control to the normal control.
    Type: Application
    Filed: September 7, 2016
    Publication date: March 9, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke MORISAKI, Takahiro NISHIGAKI, Daigo ANDO, Yuichiro KAWAI