Mitsubishi Heavy Industries Marine Machinery & Equipment Co., Ltd.

Mitsubishi Heavy Industries Limited

Japan Engine Corporation

Hiromichi Oba

Takaya Futae

Tatsuya Ishizaki

Taiyo Shirakawa

Takashi Ueda

Naohiro Hiraoka

A turbocharger (A) includes a rotary shaft (), a journal hearing (A), and a bearing housing (). The journal hearing (A) includes load support surfaces (and), a first gap forming portion (F), and a second gap forming portion (F). The first gap forming portion (F) firms a first gap () in a radial direction between the load support surfaces (and) adjacent to each other in a direction of a central axis (O). The second gap forming portion (F) forms a second gap () smaller than the first gap in the radial direction between the load support surfaces (and) adjacent to each other in the direction of the central axis (O).

Rotary machine and journal bearing

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Tokyo, Japan

Hiromichi Oba