发明授权
- 专利标题: Piston for an internal combustion engine and method for its production
- 专利标题(中): 活塞内燃机及其生产方法
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申请号: US13225663申请日: 2011-09-06
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公开(公告)号: US08671905B2公开(公告)日: 2014-03-18
- 发明人: Rainer Scharp , Peter Kemnitz , Michael Ullrich
- 申请人: Rainer Scharp , Peter Kemnitz , Michael Ullrich
- 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
- 代理机构: Collard & Roe, P.C.
- 优先权: DE102011107655 20110712
- 主分类号: F02F3/00
- IPC分类号: F02F3/00 ; F16J1/00
摘要:
A piston for an internal combustion engine has a piston head that has a circumferential cooling channel as well as a combustion bowl having a circumferential bowl wall that makes a transition into a piston crown by way of a bowl edge region. The combustion bowl is formed at least in part by a piston base body and the bowl wall is formed at least in part from an insert. The insert is connected with the piston base body by means of beam welding. A lower weld seam is configured in the bowl wall, which seam encloses an acute angle with the piston center axis (M) and ends in the lower half of the cooling channel. An upper weld seam runs from the cooling channel ceiling to the piston crown and is disposed centered or radially offset toward the outside, with reference to the clear width of the cooling channel.
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