/ 187 DEVICE FOR MEASURING THE EXHAUST MASS FLOW RATE OF INTERNAL COMBUSTION ENGINES AVL M.O.V.E EXHAUST FLOW METER (EFM) The AVL M.O.V.E EFM is a cost effective, accurate and robust exhaust mass flow measuring device with a special focus on the In-Use/ Real Driving Emissions (RDE) testing applications. The AVL EFM is fully integrated into the comprehensive AVL M.O.V.E in-vehicle measurement systems and can also be used as a “standalone device” e. g. on chassis dynos or engine test cells. Different interfaces allow for a flexible integration into automation and data acquisition systems. MEASUREMENT PRINCIPLE The AVL M.O.V.E EFM is based on the proven and robust “differential pressure” measurement principle. It consists of the EFM tube which is installed on the tail-pipe of the vehicle and the EFM control box which includes the electronics and the pressure transducers. The EFM tube and the EFM control box is separated for the most flexible installation. The EFM box is temperature conditioned to achieve high accuracy at changing ambient conditions. The usage of high-speed pressure transducers ensure accurate measurements at dynamic flow conditions in the exhaust duct. The EFM Control Box is water and dust protected (IP Protection Class 65) for the most reliable operation under harsh ambient conditions. APPLICATION Due to its robust design, high measurement accuracy and flexibility in installation and operation, the AVL M.O.V. E EFM is a perfect solution for the In-Use/ RDE testing application or use on engine test cell or chassis dyno. It can be flexibly used either in combination with AVL M.O.V.E or as a standalone device. BENEFITS AT A GLANCE • Wide range of supported applications: From small passenger car up to heavy-duty truck engine, operation either in combination with AVL M.O.V.E or standalone e. g. on test cell AVL M.O.V.E EFM Control Box with EFM Tube and Extensions Benchmark result for a 4-cylinder diesel engine • High measurement accuracy even at changing ambient and highly dynamic conditions in the exhaust • Fulfills all relevant legal requirements • Flexibility in installation to allow for the most easy and safe mounting • Quick and easy integration into AVL M.O.V.E and other automation and data acquisition systems
Solutionskatalog2016_EN
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