Patent ID: 6886400

Claim:
A device for measuring the injection quantity of injection nozzles ( 30 ), in particular for motor vehicles and in particular in production testing, the device comprising at least one measuring chamber ( 22 ) that is at least partially filled with a testing fluid ( 60 ), a coupling device ( 28 ) that can couple at least one injection nozzle ( 30 ) to the measuring chamber ( 22 ) in a pressure-tight manner, a detection device which detects a state change of the testing fluid ( 60 ) in the measuring chamber ( 22 ) at least intermittently during an injection by the injection nozzle ( 30 ), and a processing unit ( 58 ), which, based on the signal from the detection device, determines an injection quantity that corresponds to the state change, the detection device including a capacitor whose one electrode is comprised of an electrically conductive fluid ( 62 ), which is at least partially contained in a volume connected to the measuring chamber ( 22 ), and the processing unit ( 58 ) being connected to the capacitor in such a way that it can detect a change in its capacitance, which is produced by a movement of the electrically conductive fluid ( 62 ).