发明申请
- 专利标题: METHOD FOR THE PRODUCTION OF A MULTI-PART PISTON FOR AN INTERNAL COMBUSTION ENGINE
- 专利标题(中): 一种用于内燃机多功能活塞的生产方法
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申请号: US13369435申请日: 2012-02-09
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公开(公告)号: US20120131795A1公开(公告)日: 2012-05-31
- 发明人: Rainer SCHARP , Klaus KELLER , Volker WEISSE
- 申请人: Rainer SCHARP , Klaus KELLER , Volker WEISSE
- 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: DE102008055910.5 20081105; DE102009032865.3 20090714
- 主分类号: B23P15/10
- IPC分类号: B23P15/10
摘要:
A multi-part piston for an internal combustion engine has an upper piston part having a piston crown, and a lower piston part. The lower piston part has pin boss supports and pin bosses connected with them and the upper piston part and the lower piston part each have an inner and an outer support element, which elements delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses. The cavity has a separate cooling oil collector that has at least one cooling oil opening. The piston is produced by manufacturing the upper piston part and lower piston part, inserting the cooling oil collector into the upper piston part or lower piston part, and joining the upper and lower piston parts together by friction welding.
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