Patents by Inventor Hidetomo Umehara

Hidetomo Umehara 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).

  • Patent number: 4125091
    Abstract: Method and equipment for control of an internal combustion engine with a fuel-reforming device wherein air passing through the fuel-reforming device is mechanically controlled depending on the volume of air to be sucked into the engine without passing through the fuel-reforming device and is supplied into the air not passing through the fuel-reforming device, upstream of a throttle valve by means of an air pump; the total air volume sucked into the engine is detected; and the volume of fuel matching the total air volume is electrically controlled so that it can be supplied upstream of the fuel-reforming device into the air passing through the fuel-reforming device, and if necessary, also into the air not passing through the fuel-reforming device.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: November 14, 1978
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Ryuzo Hori, Kunihiko Masunaga, Toshio Funayama, Hirohiko Hoshi, Kazuhiko Ishiguro, Hidetomo Umehara
  • Patent number: 4119061
    Abstract: Method and equipment for control of an internal combustion engine including a fuel-reforming device includes appropriate control of the ratio of total air to total fuel supplied to the internal combustion engine through mechanical regulation of the volume of air to pass through the fuel-reforming device in accordance with the volume of air to be sucked into the engine without passing through the fuel-reforming device, suction being done utilizing the negative pressure downstream of the throttle valve; through electrical regulation of the volume of fuel to be supplied to the air passing through the fuel-reforming device in accordance with the volume of the air; and through electrical control of a separate fuel-supply provided in the air path which does not run through the fuel-reforming device and of a fuel-supply which runs through the fuel-reforming device.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: October 10, 1978
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hirohiko Hoshi, Toshio Funayama, Kazuhiko Ishiguro, Hidetomo Umehara
  • Patent number: 4002150
    Abstract: Gas generator for mounting on an automobile, said generator comprising a float chamber for holding a liquid fuel, a gas tank to hold an inflammable gas generated through partial oxidation and steam-reforming of said liquid fuel after passage through catalyst beds, and a valve for opening and closing a duct which carries said liquid fuel from said float chamber to the carburetor in response to the pressure within said gas tank, characterized in that when starting, only the liquid fuel is supplied from said float chamber to the carburetor to drive the engine, and when said catalyst beds are heated up and the inflammable gas fills the gas tank, said inflammable gas is used as the fuel supply for the engine.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: January 11, 1977
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Shinohara, Kunihiko Masunaga, Masakatsu Kani, Hidetomo Umehara