instrumentation & test systems > With high-end simulation systems, all kinds of road profiles – either generated synthetically or recorded using M.O.V.E iS – as well as a variety of maneuver-based driving situations can be reproduced on the testbed. with the reference emission measuring technology on the testbed,” Roland Wanker, Global Business Segment Manager of Vehicle Testing Systems, explains. In addition to emission measurements, M.O.V.E also captures geographic and climate-related data, as well as precise information about each driving situation during the test drive. All of the measured data can then be stored in a structured manner and subjected to detailed analysis and statistical evaluation using the CONCERTO M.O.V.E tool. In future, the analysis of such data will be of great value for the development of new vehicles, because the statistical evaluation of all data quantities will allow predictions to be made on the 1 8 F O C U S exhaust emission behavior of an engine family in a certain vehicle type. With its virtual XIL.STATION test- bed, AVL offers a further ideal development environment, on which model-based RDE development for the engine and the exhaust gas aftertreatment system can be carried out efficiently and cost-effectively. REPRODUCING TEST DRIVES ON THE TESTBED For a road test to be reproduced on a “real” testbed, the data recorded on-road using M.O.V.E are first converted so that they can be subsequently transferred to the testbed automation system. Johannes F. Kregar: “Basically it is all about getting an RDE-representative test drive to the testbed, while obviously having to concentrate on RDE- relevant driving conditions. An example of such an RDE-critical driving situation would be a downhill drive, during which the exhaust gas aftertreatment system cools down, worsening the vehicle’s emission behavior.” With AVL chassis dynamometers, test drives like these can be reproduced very efficiently. “AVL has developed a methodology that allows replicating a road test on the chassis dynamometer with a very good correlation,” explains Tom Dein Dias Terra, Product Manager, Chassis Dynamometer Test Systems. “This is achieved by applying a special control algorithm and
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