Ventil zum Steuern von Flüssigkeiten

摘要

The invention relates to a valve for controlling liquids, especially in an injection valve of an internal combustion engine. Said valve comprises a housing (20) having a system area (21) in which a piezoelectric actuator module (22) and a hydraulic coupler module (23) are arranged. Said coupler module has a control plunger (24) that is impinged upon by the actuator module (22) and an actuating plunger (30) cooperating with the control plunger (24) by means of a hydraulic chamber (28). The actuating plunger is connected to a valve closing member (31) cooperating with a valve seat (37), wherein the control plunger (24) and the actuating plunger (30) define the hydraulic chamber (29) and system pressure for refilling the hydraulic chamber (29) prevails in the system area (21), an evacuation channel (38) branching off from said system area. The system area (21) is impinged upon with a fluid by means of an evacuation channel (38).