Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Keisuke Tanaka

Yukihiko Ideshio

Masamichi Yamaguchi

Masashi Ikemura

Fumio Shimizu

Akio Kawaguchi

Tetsuya Yamaguchi

Hideo Yamashita

Yoshifumi Wakisaka

Shinichi Ito

Toshio Horie

Naoki Nishikawa

Guodong Tan

Ryota Yoshimoto

Takashi Iijima

A breather device that communicates an inside of a case with an outside of the case in a vertical direction includes a cylindrical body having a hollow portion that extends in the vertical direction, a stopper inserted in the hollow portion, and a blocking body that is located in a space defined by the stopper in the hollow portion, and blocks a communicating hole provided in a lower part of the cylindrical body as viewed in the vertical direction. The communicating hole ceases to be blocked when the pressure inside the case exceeds a first predetermined value, and the blocking body moves upward in the vertical direction in the space.

Breather device

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 &#x3bc;m or larger and 130 &#x3bc;m or smaller; and the porosity of the anodic oxide coating is 23% or more.

Internal combustion engine

Growing community of inventors

Anjo, Japan

Keisuke Tanaka