Sensor with reduced turbulence for measuring the flow rate of air by transit time

摘要

Sensor comprising a plurality of points 6 turned to the inside of the stream 3a, 3b for measurement and parallel to a screen grid 9. A pulsed high voltage is applied between points 16 and grid 9 in order to create ions which cross the screen grid and induce signals in other grids 11, 12 situated behind the screen grid 9. Measures are taken to avoid creation of turbulence in the stream 3a, 3b in particular, by placing the point isolators 8 setback. Application to the measurement of the flow rate of air at the intake of an internal combustion engine. <IMAGE>