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公开(公告)号：US11098620B2
公开(公告)日：2021-08-24
申请号：US16953477
申请日：2020-11-20
Applicant: IHI CORPORATION
Inventor： Yutaka Masuda , Jun Teramoto , Ryo Ohara
Abstract: Provided is a compression ratio varying mechanism, including a communication hole including: a first opening opened in an outer peripheral side surface of a piston rod; and a second opening, which is prevented from being opposed to the first opening in a radial direction of a piston rod, and is connected to an oil passage at a position apart from the first opening in a stroke direction.
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