公开(公告)号：EP2815155B1

公开(公告)日：2018-08-08

申请号：EP13707749.1

申请日：2013-02-15

申请人： Federal-Mogul LLC

发明人： JENNESS, Blair, Matthew ,  PEDIGO, Matthew, Ryan ,  KANTOLA, Troy

IPC分类号： F16J9/06 ,  F02F1/18

CPC分类号： F16J9/062 ,  F02F1/18 ,  F16J9/06 ,  F16J9/206

摘要： A power cylinder assembly for an internal combustion engine is provided. The power cylinder assembly includes a cylinder wall having a channel formed therein and a piston body with a skirt. A piston ring is seated within the channel of the cylinder wall and is sealed against the skirt of the piston body. Specifically, the piston ring has a ring body with an inner face that presents two radially inwardly extending ridges spaced axially from one another by a valley region, and the outer face presents a groove which receives a spring to bias the ridges into sliding engagement with the outer surface of the skirt of the piston body. The ring body also has at least one oil drainage port which extends radially between the valley region of the inner surface and the groove of the outer face for conveying oil from between the ridges into the groove.