Sealing arrangement for a piezo actuator of a fuel injector

Details Sealing arrangement for a piezo actuator of a fuel injector Sealing arrangement for a piezo actuator of a fuel injector

2008-03-04

2008-03-04

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S340000

Reexamination Certificate

active

10961319

ABSTRACT:
A seal (10) for a piezo-actuator of a fuel injector with terminal posts (12) projecting out of the piezo-actuator and a head arrangement (14) mounted on the piezo-actuator with openings (16) for passage of the terminal posts (12) is particularly suitable even for comparatively thin head plates. A sealing unit (18) mounted on the head arrangement (14) and provided with openings for passage of the terminal posts (12) is provided, having a support (22), on which a sealing material (26) is arranged, which is in contact in a sealing manner with the peripheral surfaces of the terminal posts (12) and a peripheral region of the head arrangement (14) and in which an element (20) made of microporous material is integrated to create gas permeability.

REFERENCES:
patent: 6274967 (2001-08-01), Zumstrull et al.
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patent: 198 44 743 (2001-01-01), None
patent: 102 51 225 (2004-05-01), None

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