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Information About

Air Flow Meter




It does not measure the Volume of the air passing through the tube, it measures the amount of mass flowing through the device in a defined time segment.
So, an air flow meter is just an application of Mass Flow Meters for a special medium.

The typical physical value is kg/h.


TYPES OF AIR FLOW METERS


Air flow meter in cars

An air flow meter is used in some Car s to measure the quantity of Air going to the Engine . The Electronic Control Unit then calculates how much Fuel is needed to Inject into the intake manifold.

  • do--- measure air volume, whereas the later "hot wire" air flow meters measure mass flow. (Cite ?)


The flap type meter includes a spring which returns the internal flap to the initial position. Sometimes if the spring is tensioned too tight it would make a restriction to the incoming air and it would cause the intake air speed to increase when not opened fully.


Air flow meter for R&D of cars

In the development process of Combustion Engines with Engine Test Stands an air flow meter/air flow measuring unit is used for measuring the continuous gravimetric air consumption of combustion engines.


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