Patent ID: 6899069

Claim:
A valve for controlling fluids, in particular in an injection valve of an internal combustion engine, comprising a valve housing ( 20 ), in which housing a system region ( 21 ) is embodied, a piezoelectric actuator module ( 22 ) and a hydraulic coupler module ( 23 ) disposed in the system region ( 21 ), the hydraulic couple having 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 ), the adjusting piston ( 24 ) and the actuating piston ( 30 ) defining the hydraulic chamber ( 29 ), means providing system pressure in the system region ( 21 ) for refilling the hydraulic chamber ( 29 ), and a diversion conduit ( 38 ) branching off from the system region ( 21 ), the system region ( 21 ) being acted upon by a fluid via the diversion conduit ( 38 ).