Invention Grant
- Patent Title: Sealing arrangement of a piezoactuator for a fuel injection valve of an internal combustion engine
- Patent Title (中): 用于内燃机的燃料喷射阀的压电致动器的密封装置
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Application No.: US12306408Application Date: 2007-06-28
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Publication No.: US08006669B2Publication Date: 2011-08-30
- Inventor: Marcus Unruh , Claus Zumstrull
- Applicant: Marcus Unruh , Claus Zumstrull
- Applicant Address: DE Hannover
- Assignee: Continental Automotive GmbH
- Current Assignee: Continental Automotive GmbH
- Current Assignee Address: DE Hannover
- Agency: King & Spalding L.L.P.
- Priority: DE102006029966 20060629
- International Application: PCT/EP2007/056459 WO 20070628
- International Announcement: WO2008/000786 WO 20080103
- Main IPC: F02M51/00
- IPC: F02M51/00

Abstract:
A sealing arrangement of a piezoactuator (12) for a fuel injection valve of an internal combustion engine, has connecting pins (14) projecting out of the piezoactuator (12) and a head arrangement (16, 18) placed on to the piezoactuator (12), which is provided with openings (20) for the penetration of the connecting pins (14), wherein a liquid-tight sealing element (30) abuts against the outer surfaces of the connecting pins (14) on one side and also against the head arrangement (16, 18) on the other. In order to ensure a reliable seal with this arrangement, in particular also over extended periods of time, the sealing element (30) abuts against the outer surfaces of the connecting pins (14) located inside the openings (20), and sealing element sections (32) located inside the openings (20) are radially compressed in the openings.
Public/Granted literature
- US20090283072A1 SEALING ARRANGEMENT OF A PIEZOACTUATOR FOR A FUEL INJECTION VALVE OF AN INTERNAL COMBUSTION ENGINE Public/Granted day:2009-11-19
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