Dosing system, dosing process and manufacturing process

摘要

The invention relates to a metering system (3) with a nozzle (1) which has an outlet opening (19), in the area of which a closure element (21) is movably arranged, which in operation is in an ejection (E) and / or retraction direction (R) is moved, the closure element (21) being coupled to at least two piezoelectric actuators (23a, 23b) which are connected in opposite directions so that a first piezoelectric actuator (23a), when expanded during operation, the closure element (21) in the retraction direction (R) and a second piezoelectric actuator (23b), when expanded during operation, moves the closure element (21) in the ejection direction (E). The invention also relates to a metering method that can be carried out with such a metering system (3) and a manufacturing method for such a metering system (3).