Patents by Inventor Hiroyuki Kanemoto

Hiroyuki Kanemoto 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).

  • Patent number: 8050850
    Abstract: An internal combustion engine includes a valve timing change mechanism that changes the phase of an intake cam, and a lift amount change mechanism that changes lift amount by causing displacement of a control shaft. An electronic control unit performs a coordinated control in which the lift amount change mechanism is operated such that the position of the control shaft that is detected by a position detection sensor becomes the target position, and the valve timing change mechanism is operated according to a control state of the lift amount change mechanism. When a discrepancy between the actual position of the control shaft and the detected position thereof is estimated to be large, coordinated control is forbidden and the valve timing change mechanism is operated based on engine load.
    Type: Grant
    Filed: May 26, 2008
    Date of Patent: November 1, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naohide Fuwa, Tokiji Ito, Seiko Tamada, Hiroyuki Kanemoto
  • Publication number: 20100175662
    Abstract: An electronic control unit (60) performs maximum position learning by driving an actuator (50) to move a control shaft (340), and learning the position where stopping occurs because the cylinder head (20) contacts with the Hi end stopper (343) as the movable limit position (Hi end) where the maximum lift amount of the intake valve is largest, to correct the cumulative movement of the control shaft (340). The electronic control unit (60) prevents maximum position learning when the engine speed NE is higher Than a prescribed rotational speed NEst.
    Type: Application
    Filed: May 23, 2008
    Publication date: July 15, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naohide Fuwa, Seiko Tamada, Hiroyuki Kanemoto
  • Publication number: 20100170459
    Abstract: An internal combustion engine includes a valve timing change mechanism that changes the phase of an intake cam, and a lift amount change mechanism that changes lift amount by causing displacement of a control shaft. An electronic control unit performs a coordinated control in which the lift amount change mechanism is operated such that the position of the control shaft that is detected by a position detection sensor becomes the target position, and the valve timing change mechanism is operated according to a control state of the lift amount change mechanism. When a discrepancy between the actual position of the control shaft and the detected position thereof is estimated to be large, coordinated control is forbidden and the valve timing change mechanism is operated based on engine load.
    Type: Application
    Filed: May 26, 2008
    Publication date: July 8, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naohide Fuwa, Tokiji Ito, Seiko Tamada, Hiroyuki Kanemoto