Patents by Inventor Masanobu Nishiwaki

Masanobu Nishiwaki 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).

  • Intake port of internal combustion engine
    Patent number: 7874278
    Abstract: An internal combustion engine wherein the top wall surface of the intake air inflow passage part of the intake port is formed by a first top wall surface and a second top wall surface lower than the first top wall surface and wherein a lower layer flow passage and an upper layer flow passage are formed at the height position of the second top wall surface as a boundary. When the intake valve opens, a lower layer flow flowing through the inside of the lower layer flow passage passes through the intake valve opening region, flows to the circumferential direction of the combustion chamber, and generates a swirl, while an upper layer flow flowing through the inside of the upper layer flow passage passes through the helical part and flows into the combustion chamber.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: January 25, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuo Sato, Osamu Horikoshi, Noriyuki Takada, Masanobu Nishiwaki
  • Intake port of internal combustion engine
    Publication number: 20090120399
    Abstract: An internal combustion engine wherein the top wall surface of the intake air inflow passage part of the intake port is formed by a first top wall surface and a second top wall surface lower than the first top wall surface and wherein a lower layer flow passage and an upper layer flow passage are formed at the height position of the second top wall surface as a boundary. When the intake valve opens, a lower layer flow flowing through the inside of the lower layer flow passage passes through the intake valve opening region, flows to the circumferential direction of the combustion chamber, and generates a swirl, while an upper layer flow flowing through the inside of the upper layer flow passage passes through the helical part and flows into the combustion chamber.
    Type: Application
    Filed: January 25, 2007
    Publication date: May 14, 2009
    Inventors: Yasuo Sato, Osamu Horikoshi, Noriyuki Takada, Masanobu Nishiwaki