Patents by Inventor Motomi Arai

Motomi Arai 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).

  • Particle removing system for an internal combustion engine
    Patent number: 4538413
    Abstract: An exhaust passage extends from an internal combustion engine to conduct exhaust from the engine. A filter is disposed in the exhaust passage to catch particles in the exhaust. A burner is disposed in the exhaust passage at a position upstream of the filter. The burner receives a mixture of air and fuel and burns the mixture to burn off the particles deposited on the filter. The burner includes a vaporizing member and a guide member.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: September 3, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Motohiro Shinzawa, Motomi Arai, Shomatsu Roppongi, Kichihiko Dozono, Yoji Hasegawa
  • Method of operating a single spot fuel injected internal combustion engine and apparatus for same
    Patent number: 4485791
    Abstract: A single spot fuel injector is energized only twice per revolution of the crankshaft of the engine so that under given operating conditions the injections coincide with the TDC and BDC positions of a piston of a selected cylinder of the engine. Under higher engine speed operation, the injection timing is advanced to improve the fuel distribution to the cylinders. When the engine operates at an engine speed below a predetermined level it is possible for the injector to be energized three times per revolution of the crankshaft.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: December 4, 1984
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuko Sugo, Tadahiro Yamamoto, Motomi Arai, Masaaki Saito
  • Carburetor with multiconduit nozzle
    Patent number: 4240989
    Abstract: A carburetor is provided with a fuel passage which leads to a float chamber and has an air bleed opening therein, and has a nozzle leading from the fuel passage to the intake passage to discharge fuel with air bubbles into it. The nozzle is formed as a multiconduit structure along at least part of its length, in order to improve breaking up of air bubbles in the fuel, and the atomization thereof.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: December 23, 1980
    Assignee: Nissan Motor Company, Limited
    Inventors: Akinobu Moriyama, Motomi Arai, Katsushi Yoshikawa, Masaaki Saito