/ 115 MOBILE FUEL CONSUMPTION MEASUREMENT AVL KMA Mobile The AVL KMA Mobile is a mobile fuel consumption measurement system that sets new standards for fuel consumption measurement in vehicles on the basis of its reliability, flexibility and precision. Due to the modular design, the measurement system can ideally be adapted to the different requirements. For example, engines without return flow require only the measuring module and engines with return flow to the tank require the measuring and the conditioning module. Thanks to the large measurement ranges, it is possible to implement consumption measurement with one system – from small-scale engines to large-scale engines. In connection with the very short response time (100 ms) and the very short measurement times, dynamic measurements can also be implemented with a high measurement quality (accuracy, reproducibility). MEASUREMENT PRINCIPLE The AVL KMA Mobile measurement system uses the worldwide approved PLU measurement principle of the servo-controlled positive displacement meter (Δp = 0 ). The positive displacement meter is driven by a servo motor (7) in a way that the differential pressure across the meter is controlled to “zero”. This differential pressure of zero between sensor inlet (1) and outlet (6) results in the absence of leakage flows within the PLU sensor that could affect the measurement result. As the sensor does not cause a pressure drop, wear and tear on the sensor are minimized. 6 7 10 9 8 1 2 3 5 1 - Einlass 2 - Zahnradzähler 3 - Positionssensor 4 - Kolben 5 - Bypass 6 - Auslass 7 - Servomotor 8 - Impulsgeber 9 - Regler 9 - Signalausgang 4 APPLICATION The universal fuel measurement system AVL KMA Mobile is used for fuel consumption measurement in vehicle road testing and at chassis dynamometer testbeds. The AVL KMA Mobile is available with different PLU sensors and, thus, allows for measuring flows between 0.16 l/h and 300 l/h. Hence, all applications from passenger cars to heavy commercial vehicles are covered. BENEFITS AT A GLANCE • Due to its universal applicability, the AVL KMA Mobile can be used with all common mixture preparation systems • Reliable test results during road tests are guaranteed by high measurement accuracy, reproducibility and robustness • The pressure required by the mixture preparation system is adjustable so that there will be no influences on the engine fuel system by the measurement system • Simple handling due to modular design and the application of self-sealing quick couplers facilitates the integration in the vehicle 1 Inlet 2 Gear meter 3 Piston sensor 4 Piston 5 Bypass 6 Outlet 7 Servo motor 8 Encoder 9 Controller 10 Signal output
Solutionskatalog2014_E
To see the actual publication please follow the link above