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公开(公告)号：US11788622B2
公开(公告)日：2023-10-17
申请号：US17523900
申请日：2021-11-10
发明人： Wentao Jiang
CPC分类号： F16J9/20 , C23C18/1689 , F16J9/26
摘要： A piston ring for an engine may include a piston ring body. The piston ring body may include a working surface, a lower surface, an upper surface, and an inner surface. An area of the working surface and/or the lower surface which is close to an outer circumferential lower edge of the piston ring body is not provided with a nitride layer, the outer circumferential lower edge is formed with a chamfer, the chamfer does not have a nitride layer, and an additional area of the piston ring has a nitride layer.
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公开(公告)号：US20220145989A1
公开(公告)日：2022-05-12
申请号：US17523900
申请日：2021-11-10
发明人： Wentao Jiang
摘要： A piston ring for an engine may include a piston ring body. The piston ring body may include a working surface, a lower surface, an upper surface, and an inner surface. An area of the working surface and/or the lower surface which is close to an outer circumferential lower edge of the piston ring body is not provided with a nitride layer, the outer circumferential lower edge is formed with a chamfer, the chamfer does not have a nitride layer, and an additional area of the piston ring has a nitride layer.
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公开(公告)号：US11840982B2
公开(公告)日：2023-12-12
申请号：US18088366
申请日：2022-12-23
发明人： Wentao Jiang , Haixiao Chai
CPC分类号： F02F1/004 , F01M11/02 , F01M2011/022
摘要： A quick return oil cylinder liner is disclosed. The cylinder liner includes an elongated cylindrical body having an outer surface and an inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end. The inner surface is configured to form a combustion chamber with a piston and an engine housing. A quick oil return part is arranged on the inner surface of the cylinder liner corresponding to a non-skirt part of the piston. The oil return part is positioned below a position of the inner surface corresponding to an oil blade of an oil ring of the piston when the piston is positioned at a bottom dead center position. The oil return part extends to the second linear axial end and forms at opening at the second liner axial end.
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公开(公告)号：US20230204002A1
公开(公告)日：2023-06-29
申请号：US18088366
申请日：2022-12-23
发明人： Wentao Jiang , Haixiao Chai
CPC分类号： F02F1/004 , F01M11/02 , F01M2011/022
摘要： A quick return oil cylinder liner is disclosed. The cylinder liner includes an elongated cylindrical body having an outer surface and an inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end. The inner surface is configured to form a combustion chamber with a piston and an engine housing. A quick oil return part is arranged on the inner surface of the cylinder liner corresponding to a non-skirt part of the piston. The oil return part is positioned below a position of the inner surface corresponding to an oil blade of an oil ring of the piston when the piston is positioned at a bottom dead center position. The oil return part extends to the second linear axial end and forms at opening at the second liner axial end.
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