SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS Electrifi��cation ��atter������e��t��������te���� E����otor����e��t��������te���� ��o��er��Electronic���� ��e��t��������te���� ��o����onent�� ��e��t��������te���� ��������on��t��e����irt��al�� te��t��e�� En��ine����e��t��������te���� En����o������ine�� ��e��t��������te���� ��eal����i��e����e��t��������te���� ��ri��eline����e��t��������te���� ����el��an����������e�� ��e��t��������te���� E��i����ion����e��t��������te������ an������ertifi��cation ��e��icle����e��t��������te���� ��acin������e��t��������te���� TESTING EQUIPMENT ����na��o��eter���� an������ct��ator�� ����icle����e��t��e���� ��e��t����ell����ec��anic���� an������ontrol����oo���� ��e��ia����on��itionin�� Consumption Measurement ��n��ection����e��tin�� ��o��������tion�� ��ea����re��ent E��i����ion����nal����i���� an������ea����re��ent ��n����e��icle�� ��ea����re��ent TESTING EQUIPMENT SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES Unique Variety of Measurement Principles 1 Fuel supply connections (4) 2 Damping device 3 Capacitive sensor 4 Tara weight / 130 5 Blade spring 6 Measurement beam 7 Calibrating weight 8 Measuring vessel 2 3 4 5 6 7 8 1 GRAVIMETRIC (FUEL BALANCE) The fuel consumed by the engine is taken from a continuously weighted measurement vessel which has the same properties as the vehicle tank. The detection of the weight of the fuel is carried out with a capacitive displacement sensor connected to the measurement vessel by means of a beam. A calibration weight is used to perform the accuracy testing and calibration procedures in accordance with ISO 9001. Calibration takes place in a fully automatic manner within a few minutes and is integrated by default into the AVL Fuel Balance. PLU MEASUREMENT PRINCIPLE The PLU positive displacement meter combines a servo-controlled gear counter with a dynamic piston sensor. A gear meter (2) driven by a servo motor (7) with encoder (8) defi nes a geometric volume to pulse frequency ratio when gear rotation is adjusted to media �� ow. A ��ypass ��5�� ensures zero pressure difference ����p �� 0�� ��etween inlet and outlet, preventing leakage �� ow. Flow changes immediately displace a zero-friction piston (4) in either direction. A piston position sensor (3) and a servo controller (9) provide a fast gear speed control loop keeping the piston centered. Sensor C1 t Coriolis Force Flow Sensor C2 Signal Density Mass Flow C1 C2 CORIOLIS Fuel passes through a U-shaped tube which vibrates at its natural frequency. This frequency is proportional to the fuel density which, in addition to the mass �� ow, is a separate measurement variable and, thus, allows for the output of volumetric measurement values. The time lag of the vibration frequency C1 to C2 is proportional to the mass �� ow. 6 7 10 9 8 1 2 3 5 1 Inlet 2 Gear meter 3 Piston sensor 4 Piston 5 Bypass 6 Outlet 7 Servo motor 8 Encoder 9 Controller 10 Signal Output 4
Solutionskatalog_2017_E
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