SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS Electrification Battery Test Systems E-Motor Test Systems Power Electronics Test Systems Component Test Systems MBD on the virtual testbed Engine Test Systems End of Line Test Systems Real Life Test Systems Driveline Test Systems Fuel and Lube Test Systems Emission Test Systems and Certification Vehicle Test Systems Racing Test Systems TESTING EQUIPMENT Dynamometers and Actuators Vehicle Testbeds Test Cell Mechanics and Control Room Media Conditioning Consumption Measurement Injection Testing Combustion Measurement Emission Analysis and Measurement In Vehicle Measurement TESTING EQUIPMENT SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES AIR CONSUMPTION MEASUREMENT Along with fuel consumption, air consumption is another important parameter when developing combustion engines. In emission certification, consumption is an integral part of AVL testbed solutions. The AVL FLOWSONIX™ Air consists of the components of measuring head, evaluation unit and two very short inlet and outlet pipes (<5*DN each). Due to the large measuring span of 1:70, only two different pipe diameters are needed (DN 100, DN 150) to cover the full application range. MEASUREMENT PRINCIPLE The ultrasonic transit time measurement principle combined with specifically developed AVL ultrasonic sensors is capable of measuring highly dynamic bidirectional air flows with a sampling rate of up to 1kHz. Due to this high data acquisition rate, precise measurement of the dynamic engine behavior is ensured, e.g. the resolution of pulsations in the air intake flow. In contrast to conventional air mass flow meters, the measurement is performed independently of the flow direction. Correct measurement in applications with possible reverse flows are therefore guaranteed. Additional damping systems or silencers are not necessary. / 120 air consumption is taken as a reference value. Thus, air Flow direction v sin v sin v c c D T2,R1 T1,R2 T - Sender R - Empfänger c - Schallgeschwindigkeit v - Fließgeschwindigkeit des Mediums - Neigungswinkel AVL FLOWSONIX™ Air BENEFITS AT A GLANCE • The unique AVL FLOWSONIX ™ Air is impervious to contamination, which enables long maintenance intervals • Marginal influence on the combustion engine due to small pressure drop in the measurement head • Quick and easy installation for any engine type • High availability of the measurement device due to proven long term stability of calibration • One size fits all. Due to the wide measurement range, only two different instrument versions are required: light duty or heavy duty • Little space required – just <5*DN up-stream and down-stream tubing APPLICATION The combination of high levels of measurement accuracy, a large measurement range and short response time results in the air mass measurement being used in the following fields of application: engine development, quality assurance, emissions development and emissions certification. T Transmitter R Receiver c Speed of Sound v Flow Media Velocity α Inclination Angle
Solutions Katalog 2015_E
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