COMPRESSION SELF-IGNITED INTERNAL COMBUSTION ENGINE

    公开(公告)号:US20190257266A1

    公开(公告)日:2019-08-22

    申请号:US16223640

    申请日:2018-12-18

    IPC分类号: F02F3/14 F02B23/06

    摘要: A heat shield film M1 is formed on entire are of the side surface 20b. A heat shield film M2 is formed entire area of the top surface 12a and the bottom surface 20c. The heat shield films M1 and M2 are mainly composed of porous alumina. The difference between the heat shield films M1 and M2 is in film thickness. The film thickness of the heat shield film M1 is from 20 to 60 μm and that of the heat shield film M2 is from 60 to 150 μm.

    INTERNAL COMBUSTION ENGINE
    3.
    发明申请

    公开(公告)号:US20200011237A1

    公开(公告)日:2020-01-09

    申请号:US16452786

    申请日:2019-06-26

    摘要: The present embodiment relates to an internal combustion engine having an anodic oxide coating formed on at least a portion of an aluminum-based wall surface facing a combustion chamber. The anodic oxide coating has a plurality of nanopores extending substantially in the thickness direction of the anodic oxide coating, a first micropore extending from the surface toward the inside of the anodic oxide coating, and a second micropore present in the inside of the anodic oxide coating; the surface opening diameter of the nanopores is 0 nm or larger and smaller than 30 nm; the inside diameter of the nanopores is larger than the surface opening diameter; the film thickness of the anodic oxide coating is 15 μm or larger and 130 μm or smaller; and the porosity of the anodic oxide coating is 23% or more.