Forwarded: Re: Airflow measurement - again...

[kleenair at ix.netcom.com]

> 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.

The object in the flow path does not need to be restrictive.  It can just 
be placed in an isolated portion of the flow path, similar to the way 
many mass air flow sensors are positioned on modern designs.  You do have 
a good point about the cost and complexity of the apparatus, but it does 
have its advatages:
1-  It corrects for flow reversion
2-  All components are robust (no fine wires)

Best Regards,
Mazda