公开(公告)号：EP3267022B1

公开(公告)日：2018-10-03

申请号：EP17181151.6

申请日：2010-11-10

申请人： Federal-Mogul LLC

发明人： Matsuo, Eduardo H. ,  Wang, Kai

IPC分类号： F02F3/18 ,  F01L3/24 ,  F02F3/28

CPC分类号： F01L3/24 ,  F01L21/04 ,  F01L2800/16 ,  F02B77/082 ,  F02F3/003 ,  F02F3/28

摘要： A piston and method is provided that inhibits the potential catastrophic damage to an internal combustion engine, thereby reducing the risk of costly damage to the engine. The piston includes a piston body having an upper combustion surface separated from an internal cooling chamber by a wall. The a pocket extends into the upper combustion surface to a closed bottom surface of the wall. A tubular member is disposed in the pocket. The tubular member extends upwardly from the upper surface. Should a valve head drop from its normal operating position, the valve head impacts the tubular member and forms a blow-by through passage extending from the upper combustion surface into the cooling chamber.