Patents by Inventor Yoshita Tsukamoto

Yoshita Tsukamoto 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).

  • Piston cooling device
    Patent number: 8511261
    Abstract: Disclosed is a piston cooling device wherein the cooling efficiency of a piston is improved by oil injected from an oil jet and supplied to a cooling passage provided in the piston, and the amount of cooling oil is reduced when an internal combustion engine is operated at maximum output. The piston cooling device is provided with a piston for an internal combustion engine, in which a circumferential passage and a cooling passage having an inlet passage and an outlet passage are provided, and an oil jet for injecting oil from an injection port to the inlet passage. The oil jet injects oil at every stroke of the piston so that a two-phase plug flow composed of gas and oil is formed in the cooling passage at least when an internal combustion engine is operated at maximum output.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: August 20, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shigenao Maruyama, Atsuki Komiya, Shuichi Moriya, Morimasa Nagata, Seiji Kosaka, Yasuhiro Kawamura, Junya Negishi, Yoshita Tsukamoto
  • PISTON COOLING DEVICE
    Publication number: 20130000572
    Abstract: Disclosed is a piston cooling device wherein the cooling efficiency of a piston is improved by oil injected from an oil jet and supplied to a cooling passage provided in the piston, and the amount of cooling oil is reduced when an internal combustion engine is operated at maximum output. The piston cooling device is provided with a piston for an internal combustion engine, in which a circumferential passage and a cooling passage having an inlet passage and an outlet passage are provided, and an oil jet for injecting oil from an injection port to the inlet passage. The oil jet injects oil at every stroke of the piston so that a two-phase plug flow composed of gas and oil is formed in the cooling passage at least when an internal combustion engine is operated at maximum output.
    Type: Application
    Filed: February 22, 2011
    Publication date: January 3, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shigenao Maruyama, Atsuki Komiya, Shuichi Moriya, Morimasa Nagata, Seiji Kosaka, Yasuhiro Kawamura, Junya Negishi, Yoshita Tsukamoto