Method and Injection System for Injecting a Fluid

摘要

A method for injecting a fluid, in particular a fuel, performs the following steps: A nozzle ( 1 ) which can be actuated by a piezo element ( 5 ) is provided. A current pulse ( 12 a) is supplied to the piezo element ( 5 ). The capacity ( 16 ) of the piezo element ( 5 ) is recorded at the time when the current pulse ( 12 a) is supplied. An actual characteristic curve of the injection is recorded based on the capacity ( 16 ). The current pulse ( 12 a) is regulated in order to optimize the injection based on the actual characteristic curve of the injection.