Invention Grant
- Patent Title: Piston for an internal combustion engine and method for its production
- Patent Title (中): 活塞内燃机及其生产方法
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Application No.: US13225663Application Date: 2011-09-06
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Publication No.: US08671905B2Publication Date: 2014-03-18
- Inventor: Rainer Scharp , Peter Kemnitz , Michael Ullrich
- Applicant: Rainer Scharp , Peter Kemnitz , Michael Ullrich
- Applicant Address: DE Stuttgart
- Assignee: MAHLE International GmbH
- Current Assignee: MAHLE International GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Collard & Roe, P.C.
- Priority: DE102011107655 20110712
- Main IPC: F02F3/00
- IPC: F02F3/00 ; F16J1/00

Abstract:
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.
Public/Granted literature
- US20130014722A1 PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR ITS PRODUCTION Public/Granted day:2013-01-17
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