Dickinson Wright PLLC
Internal combustion engine
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.
TOYOTA JIDOSHA KABUSHIKI KAISHA
C F C F C F F C F C F C F F F C
C25D F02B C25D F02B C25D F05C F02F C25D F02F C25D F02F C25D F05C F05C F02F C25D
inventional inventional inventional inventional inventional additional inventional inventional additional inventional inventional inventional additional additional additional inventional
Fumio Hideo Akio Keisuke Toshio Yoshifumi Naoki
Shimizu Yamashita Kawaguchi Tanaka Horie Wakisaka Nishikawa