发明申请
US20120222632A1 Piston for an internal combustion engine 审中-公开
内燃机活塞

  • 专利标题: Piston for an internal combustion engine
  • 专利标题(中): 内燃机活塞
  • 申请号: US13066554
    申请日: 2011-04-18
  • 公开(公告)号: US20120222632A1
    公开(公告)日: 2012-09-06
  • 发明人: Rainer Scharp
  • 申请人: Rainer Scharp
  • 申请人地址: DE Stuttgart
  • 专利权人: MAHLE International GmbH
  • 当前专利权人: MAHLE International GmbH
  • 当前专利权人地址: DE Stuttgart
  • 优先权: DE102011013139.6 20110304
  • 主分类号: F01P1/04
  • IPC分类号: F01P1/04
Piston for an internal combustion engine
摘要:
The present invention relates to a piston (10) for an internal combustion engine, having an outer circumferential cooling channel (19) and an inner cooling cavity (21), the cooling cavity bottom (22) of which has an opening (23) that is closed off with a separate closure element (33) that has at least one cooling oil opening (35), whereby the closure element (33) is held, in clamped manner, by means of two engagement elements (37) disposed on the outer edge, in at least one engagement groove (34) provided in the region of the opening (23) of the cooling cavity bottom (22). According to the invention, it is provided that the closure element (33) has at least two spring tabs (38) that support themselves on a contact surface (39) provided in the piston interior, in each instance, in such a manner that the closure element (33) is held in the engagement groove (34) under axial bias.
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