A Novel Ultrasonic Intake Air Flow Meter for Test Bed Applications

Paper #:
  • 2013-26-0118

Published:
  • 2013-01-09
DOI:
  • 10.4271/2013-26-0118
Citation:
Kudlaty, K., Kock, K., and Krenn, H., "A Novel Ultrasonic Intake Air Flow Meter for Test Bed Applications," SAE Technical Paper 2013-26-0118, 2013, doi:10.4271/2013-26-0118.
Abstract:

The development process of a combustion engine is now a days strongly influenced by future emission regulations which require further reduction in fuel consumption and precise control of combustion process based on Intake air measurement, during engine development. Intake air flow meters clearly differentiate themselves from typical industrial gas flow meters because of their ability to measure extremely dynamic phenomenon of combustion engine. Thus, high internal data acquisition rate, short response time, ability to measure pulsating and reverse flows with lower measurement uncertainty are the factors that ensures the reliability of the results without being affected by ambient influences, sensor contamination or sensor aging. The AVL developed FLOWSONIX™ is based on ultrasonic transit time measuring principle with broad-band Capacitive Ultrasonic Transducer (CUT) characterized by an excellent air impedance matching strongly distinguishes itself by fulfilling all those requirements.

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