Valve for controlling liquids e.g. fuel injection valve in IC engine, has actuating piston movably arranged in control piston blind bore to bound hydraulic chamber, with actuating piston and valve closure element made in one piece

摘要

The valve has n especially piezoelectric actuator unit for a valve element in a valve body bore with control and actuating pistons, a valve closure element and seat and a hydraulic chamber between the pistons. The control piston (16) has a blind bore (19) in which the actuating piston (18) is movably arranged to bound the hydraulic chamber (17). The actuating piston and valve closure element (21) are made in one piece.