Patents by Inventor Shigeo Iwaki

Shigeo Iwaki 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).

  • Engine operated on hydrogen-supplemented fuel
    Patent number: 4111161
    Abstract: A lean air-fuel mixture and hydrogen gas are introduced into the combustion chamber so that high concentrations of hydrogen form about the spark plug and combustion chamber walls.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: September 5, 1978
    Assignee: Nissan Motor Company, Limited
    Inventors: Zene Ueno, Akira Morita, Shigeo Iwaki, Tadahiko Nagaoka, Tokuich Inagaki
  • Burning rate control in hydrogen fuel combustor
    Patent number: 3982878
    Abstract: To a mixture of hydrogen and oxygen or air having the stoichiometric oxygen-to-hydrogen ratio, a diluent gas such as carbon dioxide or argon is added before the mixture is fed to the combustor when the burning rate of the mixture is excessively high. The diluent in the combustion gas can be reused after separation of water.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: September 28, 1976
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kimitaka Yamane, Zene Ueno, Akira Morita, Tadahiko Nagaoka, Shigeo Iwaki