Valve for controlling liquids

Details Valve for controlling liquids Valve for controlling liquids

2005-05-31

2005-05-31

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C251S129060

Reexamination Certificate

active

06899069

ABSTRACT:
A valve for controlling fluids, in particular in an injection valve of an internal combustion engine, including a valve housing (20), in which housing a system region (21) is embodied, in which region a piezoelectric actuator module (22) and a hydraulic coupler module (23) are disposed, which has both an adjusting piston (24), on which the actuator module (22) acts, and an actuating piston (30) that is operatively connected via a hydraulic chamber (29) to the adjusting piston (24) and that is connected to a valve closing member (31) cooperating with a valve seat (37), and the adjusting piston (24) and the actuating piston (30) define the hydraulic chamber (29), and a system pressure for refilling the hydraulic chamber (29) prevails in the system region (21), from which a diversion conduit (38) branches off. The system region (21) is acted upon by a fluid via the diversion conduit (38).

REFERENCES:
patent: 4584980 (1986-04-01), Schwerdt et al.
patent: 5857662 (1999-01-01), Kappel et al.
patent: 6457699 (2002-10-01), Stoecklein
patent: 199 46 827 (2001-06-01), None

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