Invention Grant
- Patent Title: Piston for an internal combustion engine and cover ring for the cooling channel of the piston
- Patent Title (中): 用于内燃机的活塞和用于活塞冷却通道的盖环
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Application No.: US11485569Application Date: 2006-07-12
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Publication No.: US07387100B2Publication Date: 2008-06-17
- Inventor: Rolf-Gerhard Fiedler , Rainer Scharp , Hans-Peter Wieland
- Applicant: Rolf-Gerhard Fiedler , Rainer Scharp , Hans-Peter Wieland
- Applicant Address: DE Stuttgart
- Assignee: MAHLE International GmbH
- Current Assignee: MAHLE International GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Collard & Roe, P.C.
- Priority: DE102005037175 20050806
- Main IPC: F02F3/00
- IPC: F02F3/00

Abstract:
A piston for an internal combustion engine has a piston head and a piston skirt spaced apart from the piston head by a ring-shaped recess. The piston has at least one pin bore for accommodating a piston pin. A ring-shaped circumferential cooling channel for a coolant is provided in the piston head, which channel is closed off by a cover ring that consists of at least two segments. At least one region of the cover ring projects at least partially into the clear opening of the at least one pin bore, in such a manner that the cover ring simultaneously forms the retaining element for the piston pin.
Public/Granted literature
- US20070028863A1 Piston for an internal combustion engine and cover ring for the cooling channel of the piston Public/Granted day:2007-02-08
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