SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS Electrification atterette Eotorette oerElectronic ette oonent ette onteirtal tete Enineette Enoine ette ealieette rielineette elane ette Eiionette anertification eicleette acinette TESTING EQUIPMENT naoeter anctator icleete etellecanic anontroloo eiaonitionin Consumption Measurement nectionetin otion eareent Eiionnali aneareent neicle eareent TESTING EQUIPMENT SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES AIR CONSUMPTION MEASUREMENT AVL FLOWSONIX™ Air Along with fuel consumption, air consumption is another im portant parameter when developing comustion engines. In emission certification, air consumption is an integral part of AVL testbed solutions. The AVL FLOWSONIX™ Air components are the measuring head, the 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 / 142 air consumption is taken as a reference value. Consequently, 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 range of up to ± 2,900 kg/h. MEASUREMENT PRINCIPLE The measurement principle is based on the ultrasonic transit-time differential method. Two ultrasonic pulses are sent simultaneously through the owing medium from Transmitter 1 T1 and Transmitter 2 T2. One pulse is propagating into the ow and the other one against it. The interaction between the speed of sound c and the velocity of ow v accelerates the pulse on one of the paths and decelerates the pulse on the other path. This effective propagation velocity results in different transit times through the medium: The signal at Receiver 1 (R1) arrives faster than the signal arriving at Receiver 2 (R2). The device measures the speed of sound traveling either way, corresponding to t1 and t2. BENEFITS AT A GLANCE • The unique AVL FLOWSONIX ™ Air is impervious to contamination, which enables long maintenance intervals Marginal inuence 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 extended calibration interval of one year One size fits all. ue 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 enables applicability of the air mass measurement 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
Solutionskatalog_2017_E
To see the actual publication please follow the link above