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公开(公告)号：US11754017B2
公开(公告)日：2023-09-12
申请号：US17611420
申请日：2020-06-30
IPC分类号： F02F3/28
CPC分类号： F02F3/28
摘要： A piston of an internal combustion engine configured to be reciprocable along an axial direction in a cylinder includes a cavity formed to be recessed in a center of a piston top surface, and an outer circumferential edge portion located on a radially outer side of the cavity in the piston top surface. The cavity includes a lip portion, a raised portion, and a curved portion. The curved portion includes an outer circumference-side curved surface which includes a curved surface connected to the lip portion, an inner circumference-side concave surface which is located on a radially inner side of an outer circumference-side curved surface and includes a surface connected to a raised portion, the inner circumference-side concave surface including a deepest portion of the cavity, and a convex surface formed between the outer circumference-side curved surface and the inner circumference-side concave surface, as well as protruding upward.
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公开(公告)号：US11608798B2
公开(公告)日：2023-03-21
申请号：US16958101
申请日：2018-07-25
发明人： Shintaro Shuto , Satoshi Yamada , Kazuro Hotta , Tomohiro Noguchi , Kenichi Iizuka , Yuki Nakamura
摘要： The purpose of the present invention is to provide a gas engine and a ship provided with the same, the gas engine making it is possible to ensure a distance that enables fuel and an oxidizing agent to mix, and to evenly mix the oxidizing agent and the fuel even if the flow rate of gas traveling towards intake pipes varies. A gas engine (1) comprises: an intake passage (10) through which a gas flows; a plurality of intake pipes (12A, 12B) where the intake passage (10) branches apart at a branching section (14) that is downstream in the gas flow direction, the intake pipes opening to a cylinder (16) at the downstream end; and a fuel injection means (31) that injects fuel into the intake passage (10). The fuel injection means (31) is provided upstream of the branching section (14) in the gas flow direction, and injects varying quantities of fuel into the plurality of intake pipes (12A, 12B).
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