Patents by Inventor Eiji Tomii

Eiji Tomii 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).

  • Engine system and vehicle
    Patent number: 7107948
    Abstract: An engine system includes an engine and an engine control unit. The engine includes an intake valve that opens and closes the opening of a cylinder, a valve actuator that drives the intake valve and can arbitrarily control the lift amount of the intake valve, an intake passage that introduces air and fuel into the cylinder through the opening of the cylinder, and a throttle valve provided to open and close the opening of the intake passage and control the quantity of air to be introduced into the cylinder in response to a load required by a driver. During intake operation in substantially all the load states of the engine, the valve actuator is controlled so that the opening area of the opening determined by the lift amount of the intake valve is not less than the opening area of the opening determined by the opening degree of the throttle valve.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: September 19, 2006
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Eiji Tomii
  • Vehicle
    Publication number: 20060169512
    Abstract: A motorcycle comprises a hydraulic valve driving device operable to drive an intake valve and an exhaust valve, and a hydraulic path used for driving the hydraulic valve driving device. The hydraulic path is arranged inside an outermost line connecting respective outermost portions of constituent elements, other than the hydraulic path, of a vehicle body.
    Type: Application
    Filed: December 27, 2005
    Publication date: August 3, 2006
    Inventors: Eiji Tomii, Yoshinori Ookuwa
  • Engine system and vehicle
    Publication number: 20060157024
    Abstract: An engine system includes an engine and an engine control unit. The engine includes an intake valve that opens and closes the opening of a cylinder, a valve actuator that drives the intake valve and can arbitrarily control the lift amount of the intake valve, an intake passage that introduces air and fuel into the cylinder through the opening of the cylinder, and a throttle valve provided to open and close the opening of the intake passage and control the quantity of air to be introduced into the cylinder in response to a load required by a driver. During intake operation in substantially all the load states of the engine, the valve actuator is controlled so that the opening area of the opening determined by the lift amount of the intake valve is not less than the opening area of the opening determined by the opening degree of the throttle valve.
    Type: Application
    Filed: December 27, 2005
    Publication date: July 20, 2006
    Inventor: Eiji Tomii