Patents by Inventor Hisao UOZUMI

Hisao UOZUMI 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 reduced engine knocking
    Patent number: 11022027
    Abstract: In an internal combustion engine provided with a combustion chamber defined by an inner circumferential surface of a cylinder, an end surface of a cylinder head facing the cylinder, a crown surface of a piston, an inner surface of an intake valve, and an inner surface of an exhaust valve, for the purpose of improving the anti-knocking performance of the engine, the inner circumferential surface of the cylinder, the end surface of the cylinder head, the crown surface of the piston, the inner surface of the intake valve and the inner surface of the exhaust valve include a mirror surface region formed as a mirror surface having an arithmetic average roughness of 0.3 ?m or less, and a rough surface region formed as a rough surface having an arithmetic average roughness of 0.3 ?m or more.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: June 1, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Hisao Uozumi
  • Internal combustion engine
    Patent number: 10801463
    Abstract: An internal combustion engine includes an anisotropic thermal conductivity member (37, 51) provided on a wall surface defining a cylinder or a wall surface of a cooling water passage on a side of the cylinder, a thermal conductivity of the anisotropic thermal conductivity member in an axial direction of the cylinder being higher than a thermal conductivity of the anisotropic thermal conductivity member in a radial direction of the cylinder, and a thermally insulating member (38. 52) provided on an outer surface of the anisotropic thermal conductivity member with respect to the radial direction of the cylinder.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: October 13, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Satoshi Yamamura, Mitsuru Sugimoto, Noriyuki Takegata, Hisao Uozumi, Makoto Yamazaki
  • INTERNAL COMBUSTION ENGINE
    Publication number: 20190316559
    Abstract: An internal combustion engine includes an anisotropic thermal conductivity member (37, 51) provided on a wall surface defining a cylinder or a wall surface of a cooling water passage on a side of the cylinder, a thermal conductivity of the anisotropic thermal conductivity member in an axial direction of the cylinder being higher than a thermal conductivity of the anisotropic thermal conductivity member in a radial direction of the cylinder, and a thermally insulating member (38. 52) provided on an outer surface of the anisotropic thermal conductivity member with respect to the radial direction of the cylinder.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 17, 2019
    Inventors: Satoshi YAMAMURA, Mitsuru SUGIMOTO, Noriyuki TAKEGATA, Hisao UOZUMI, Makoto YAMAZAKI
  • INTERNAL COMBUSTION ENGINE WITH REDUCED ENGINE KNOCKING
    Publication number: 20180142608
    Abstract: In an internal combustion engine provided with a combustion chamber defined by an inner circumferential surface of a cylinder, an end surface of a cylinder head facing the cylinder, a crown surface of a piston, an inner surface of an intake valve, and an inner surface of an exhaust valve, for the purpose of improving the anti-knocking performance of the engine, the inner circumferential surface of the cylinder, the end surface of the cylinder head, the crown surface of the piston, the inner surface of the intake valve and the inner surface of the exhaust valve include a mirror surface region formed as a mirror surface having an arithmetic average roughness of 0.3 ?m or less, and a rough surface region formed as a rough surface having an arithmetic average roughness of 0.3 ?m or more.
    Type: Application
    Filed: October 11, 2017
    Publication date: May 24, 2018
    Inventor: Hisao UOZUMI