Patents by Inventor Akio Kikori, legal representative

Akio Kikori, legal representative 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).

  • Internal combustion engine with variable compression ratio
    Patent number: 7840335
    Abstract: In a variable compression ratio internal combustion engine in which the compression ratio is changed by changing the combustion chamber volume, the present invention enables to inhibit irregularities in the air-fuel ratio involved by changing of the combustion chamber volume. In a transition period during which the compression ratio is changed, the actual volume of the combustion chamber realized by a compression ratio changing mechanism is detected. A factor that influences the air-fuel ratio (for example, fuel injection quantity, cylinder intake air quantity or amount of EGR) is controlled based on the actual volume of the combustion chamber thus detected to make the air-fuel ratio substantially equal to that before and after the change of the compression ratio.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: November 23, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daisuke Akihisa, Eiichi Kamiyama, Shigeo Kikori, Akio Kikori, legal representative
  • Internal combustion engine with variable compression ratio
    Patent number: 7422004
    Abstract: In a variable compression ratio internal combustion engine in which the compression ratio is changed by changing the combustion chamber volume, the present invention enables to inhibit irregularities in the air-fuel ratio involved by changing of the combustion chamber volume. In a transition period during which the compression ratio is changed, the actual volume of the combustion chamber realized by a compression ratio changing mechanism is detected. A factor that influences the air-fuel ratio (for example, fuel injection quantity, cylinder intake air quantity or amount of EGR) is controlled based on the actual volume of the combustion chamber thus detected to make the air-fuel ratio substantially equal to that before and after the change of the compression ratio.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: September 9, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daisuke Akihisa, Eiichi Kamiyama, Akio Kikori, legal representative, Shigeo Kikori