Patents by Inventor Syunichi Aoyama

Syunichi Aoyama 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).

  • Exhaust gas recirculation system with control apparatus for exhaust gas flow control valve
    Patent number: 4047510
    Abstract: An exhaust gas recirculation system for an internal combustion engine comprises an exhaust gas flow control valve; a vacuum actuator for operation of the flow control valve; and a control apparatus which provides an output vacuum to be applied to the vacuum actuator which is an amplification of the venturi vacuum.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: September 13, 1977
    Assignee: Nissan Motor Company, Limited
    Inventors: Yasuo Nakajima, Yoshimasa Hayashi, Yasuo Takagi, Kunihiko Sugihara, Syunichi Aoyama
  • Exhaust gas recirculation control system
    Patent number: 4033308
    Abstract: Gas recirculation into engine combustion chambers is controlled to a constant ratio with respect to the amount of induction air despite wide variations in manifold vacuum.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: July 5, 1977
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yoshimasa Hayashi, Yasuo Nakajima, Kunihiko Sugihara, Syunichi Aoyama
  • Control apparatus for exhaust gas recirculation system
    Patent number: 4006721
    Abstract: A control apparatus for a vacuum operated device comprising a first flexible diaphragm responsive to a vacuum input, a second flexible diaphragm responsive to a vacuum output present in a vacuum chamber, a control valve associated with said second flexible diaphragm for controlling the vacuum output in said chamber, and a control arm connected between said first and second diaphragms and rotatable about a fulcrum, the movement of said first flexible diaphragm being transmitted through said control arm to said second flexible diaphragm, whereby said control valve is actuated to control the vacuum output in said vacuum chamber.
    Type: Grant
    Filed: May 30, 1975
    Date of Patent: February 8, 1977
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasuo Takagi, Kazuo Hioki, Syunichi Aoyama