Patents by Inventor Masaaki Tomii

Masaaki 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).

  • Fuel supply control system for internal combustion engine
    Patent number: 6481405
    Abstract: A fuel supply control system for an internal combustion engine wherein during startup of the engine, a fuel supply amount is calculated according to a fuel amount calculating method suitable for startup of the engine, and the calculated amount of fuel is supplied to the engine. After startup of the engine, a fuel supply amount is calculated according to a fuel amount calculating method suitable for after-startup of the engine and the calculated amount of fuel is supplied to the engine, the fuel supply amount during startup of the engine being smoothly changed to the fuel supply amount suitable for after-startup—during the transition from startup to after-startup.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: November 19, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hirohide Fujino, Masaki Ueno, Masaaki Tomii
  • Fuel supply control system for internal combustion engine
    Publication number: 20010010212
    Abstract: A fuel supply control system for an internal combustion engine wherein during startup of the engine, a fuel supply amount is calculated according to a fuel amount calculating method suitable for startup of the engine, and the calculated amount of fuel is supplied to the engine. After startup of the engine, a fuel supply amount is calculated according to a fuel amount calculating method suitable for after-startup of the engine and the calculated amount of fuel is supplied to the engine, the fuel supply amount during startup of the engine being smoothly changed to the fuel supply amount suitable for after-startup—during the transition from startup to after-startup.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 2, 2001
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Hirohide Fujino, Masaki Ueno, Masaaki Tomii
  • Abnormality detecting device for exhaust secondary air supplying system
    Patent number: 6023401
    Abstract: In an exhaust secondary air supply system including an electric air pump and a flow rate control valve disposed in an air supply passage connected to an exhaust passage of an engine, the electric air pump is first driven after the start of the engine, and the flow rate control valve is then opened after a lapse of a predetermined time. At a time after starting the driving of the electric air pump, the abnormality of the electric air pump is detected by comparing a deviation between the current before and after driving of the electric air pump with a predetermined reference value. After opening of the flow rate control valve, the abnormality of the flow rate control valve is detected by comparing the deviation between the current before and after the opening of the flow rate control valve with a predetermined reference value.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: February 8, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akira Hashimoto, Toshikazu Oketani, Yoshitaka Hibino, Masaaki Tomii, Hiroyuki Sugiura, Kentaro Yokoo