Title:
内燃機関
Document Type and Number:
Japanese Patent JP7084234
Kind Code:
B2
Abstract:
The present embodiment relates to an internal combustion engine having an anodic oxide coating (10) formed on at least a portion of an aluminum-based wall surface facing a combustion chamber (NS). The anodic oxide coating (10) has a plurality of nanopores (1c) extending substantially in the thickness direction of the anodic oxide coating (10), a first micropore (1a) extending from the surface toward the inside of the anodic oxide coating (10), and a second micropore (1b) present in the inside of the anodic oxide coating (10); the surface opening diameter of the nanopores (1c) is 0 nm or larger and smaller than 30 nm; the inside diameter of the nanopores (1c) is larger than the surface opening diameter; the film thickness of the anodic oxide coating (10) is 15 µm or larger and 130 µm or smaller; and the porosity of the anodic oxide coating (10) is 23% or more.
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Inventors:
Naoki Nishikawa
Kawaguchi Akio
Hideo Yamashita
Keisuke Tanaka
Toshio Horie
Yoshifumi Wakisaka
Fumio Shimizu
Kawaguchi Akio
Hideo Yamashita
Keisuke Tanaka
Toshio Horie
Yoshifumi Wakisaka
Fumio Shimizu
Application Number:
JP2018127729A
Publication Date:
June 14, 2022
Filing Date:
July 04, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota Central R & D Labs.
Toyota Central R & D Labs.
International Classes:
F02F3/10; F02F1/00; F02F3/00; F02F3/12; F02F3/14; F16J1/00; F16J10/00
Domestic Patent References:
| JP2015031226A | ||||
| JP2017122271A | ||||
| JP201360620A |
Attorney, Agent or Firm:
Hiraki International Patent Office
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