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.: US13066549Application Date: 2011-04-18
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Publication No.: US08616161B2Publication Date: 2013-12-31
- Inventor: Rainer Scharp , Klaus Keller
- Applicant: Rainer Scharp , Klaus Keller
- Applicant Address: DE Stuttgart
- Assignee: MAHLE International GmbH
- Current Assignee: MAHLE International GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Collard & Roe, P.C.
- Priority: DE102010053925 20101209
- Main IPC: F01P1/04
- IPC: F01P1/04 ; B23P15/10

Abstract:
A method for the production of a piston for an internal combustion engine, having a circumferential cooling channel, whereby a blank of a lower piston part is forged, and a blank of an upper piston part is produced, the blanks are pre-machined and joined together to form a piston blank, which is finished to produce a piston. At least one depression or recess is formed into the blank of the lower piston part during the forging process. In the finished piston, the depression forms an opening for a coolant inflow and/or a coolant outflow, or the recess forms an excavation groove for a pin securing ring, respectively.
Public/Granted literature
- US20120145112A1 Piston for an internal combustion engine and method for its production Public/Granted day:2012-06-14
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