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OwnerJoachim Unger, Wolfram Von Huelsen +4inventors
InventorsJoachim Unger, Wolfram Von Huelsen, Hermann Bolle, Ralf Bindel, Ralf Haas, Dirk Wolf
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An apparatus (10) for measuring the injection quantity of injection systems (32), in particular for internal combustion engines in motor vehicles and especially in production testing, includes a measurement chamber (45). A connecting device (28) is also provided, by which at least one injection system (32) can be made to communicate with the measurement chamber (45) in pressuretight fashion. A piston (40) is passed through a wall of the measurement chamber (45). A detection device (58) is also provided, with which a motion of the piston (40) can be detected. To increase the measurement accuracy of the apparatus (10), it is proposed that the detection device (58) function in noncontacting fashion.
An apparatus (10) for measuring the injection quantity of injection systems (32), in particular for motor vehicles and especially in production testing, having a measurement chamber (45), a connecting device (28) by which at least one injection system (32) can be made to communicate with the measurement chamber (45) in pressuretight fashion, having a piston (40) which at least regionally defines the measurement chamber (45), and having a detection device (58), which detects a motion of the piston (40), characterized in that the detection device (58) functions in noncontacting fashion.
The apparatus of one of the foregoing claims, characterized in that the detection device functions inductively and in particular includes an eddy current sensor (58).
The apparatus of one of the foregoing claims, characterized in that the detection device functions by the laser triangulation method.
The apparatus of one of the foregoing claims, characterized in that the detection device includes a laser interferometer.
The apparatus of one of the foregoing claims, characterized in that the detection device includes a laser Doppler vibrometer.
A method for measuring the injection quantity of injection systems (32), in particular for motor vehicles and especially in production testing, in which a testing fluid is injected into a measurement chamber (45) by an injection system (32), and the motion, caused by the injection, of a piston (40) passed through a wall of the measurement chamber (45) is detected, characterized in that the motion of the piston (40) is detected in noncontacting fashion.
Dependencies are inferred from the claim text.