Forwarded: Re: Airflow measurement - again...

[Evert Rosseel]

> His idea was basically based 
> on mounting a small object in the air flow path via an arm that has a 
> strain gauge.  Increased air flow equates to change in the load cell 
> reading.  To cancel out vehicle dynamics an identical setup outside the 
> flow path is used and the signals are subtracted.  

This is very similar to the system used in the Bosch K-jetronic 
mechanical fuel injection, where a plate (located in the air flow) and 
arm are used to control the fuel flow to the injectors. Such a system 
will always cause relatively large flow losses, and therefore 
deteriorate maximum power.

Also, I imagine the 2 load cells will make the system quite 
expensive.

Evert
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*    Dr. ir. Evert Rosseel                                             *
*    Laboratory for Machines                                   *
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