Invention Grant
- Patent Title: Piston for an internal combustion engine
- Patent Title (中): 内燃机活塞
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Application No.: US12312619Application Date: 2007-10-23
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Publication No.: US08205591B2Publication Date: 2012-06-26
- Inventor: Peter Kemnitz
- Applicant: Peter Kemnitz
- Applicant Address: DE Stuttgart
- Assignee: MAHLE International GmbH
- Current Assignee: MAHLE International GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Collard & Roe, P.C.
- Priority: DE102006055726 20061125
- International Application: PCT/DE2007/001903 WO 20071023
- International Announcement: WO2008/061487 WO 20080529
- Main IPC: F02F3/00
- IPC: F02F3/00

Abstract:
The present invention relates to a piston (10) for an internal combustion engine having a piston head (11) and a piston skirt (16) with piston hubs (17) which are each connected to a hub bore (18) for receiving a piston bolt, wherein the piston hubs (17) are in the shape of a trapezoidal or step-shaped support in which the inner faces (19) of the piston hubs (17) include an acute angle (αa) with the central axis (M) of the piston. The invention provides that each hub bore (18) is embodied as a shaped bore which is widened at least in its inner area in such a way that the widened portion increases in size in the direction of the inner end (18′) of the hub bore (18) forming facets (120, 220) on the lateral surface (18) of the hub bore (18), and that the facets (120, 220) include an acute angle (αa, β) with the central axis (M) of the piston.
Public/Granted literature
- US20100012073A1 PISTON FOR AN INTERNAL COMBUSTION ENGINE Public/Granted day:2010-01-21
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