Patents by Inventor Nobuyuki Tokuou

Nobuyuki Tokuou 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).

  • Intake port structure for internal combustion engine
    Patent number: 7150267
    Abstract: An intake port structure includes a collector passageway disposed in an upstream section and the first and second branching passageways disposed in a downstream section that branch from the collector passageway. The intake port structure further includes an intake air flow impact section formed on a crotch portion between first and second branching passageways against which a portion of an intake air flow from the collector passageway collides such that the portion of the intake air flow is dispersed laterally toward both sides of the intake air flow impact section. The intake air flow impact section is recessed to stem portions of intake valves, and includes first and second impact surfaces. The second impact surface is formed along the stem portions of the intake valves. A fuel spray from a fuel injector is atomized when mixed with the dispersed intake air flow in the first and second branching passageways.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: December 19, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Kuriki, Nobuyuki Tokuou, Hidefumi Komuro
  • Intake port structure for internal combustion engine
    Publication number: 20050139195
    Abstract: An intake port structure includes a collector passageway disposed in an upstream section and the first and second branching passageways disposed in a downstream section that branch from the collector passageway. The intake port structure further includes an intake air flow impact section formed on a crotch portion between first and second branching passageways against which a portion of an intake air flow from the collector passageway collides such that the portion of the intake air flow is dispersed laterally toward both sides of the intake air flow impact section. The intake air flow impact section is recessed to stem portions of intake valves, and includes first and second impact surfaces. The second impact surface is formed along the stem portions of the intake valves. A fuel spray from a fuel injector is atomized when mixed with the dispersed intake air flow in the first and second branching passageways.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 30, 2005
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Kuriki, Nobuyuki Tokuou, Hidefumi Komuro