MAP Questions...

[robert dingli]

Jim Staff asks,

>     Well, now that I know a ton about MAF. I came to a great revolation. I 
> checked the minimum air flow specs and I'm not even close to the turn on flow at
> full power!!!!!
>     So much for the power of a briggs and stratton. But a MAP sensor is the next
> bet, or any Barametric Pressure Sensor. Does anyone know of any good ones?
>     What are the dimesions of you average MAP? <asking for something like 
> hieght, width, etc>
>     What is the output type, and range? <Analog voltage,frequency,PWM etc> 
> Analog Prefered of course.

Jim, have you considered a simple speed throttle system using throttle position
and rpm to index a map? 

Throttle density systems are common on individual throttle body intakes
especially for ported rotaries and agressive cam piston engines.

I have seen many successful (usually racing) applications where MAP of MAF
sensors are useless.  You could adjust for ambient air pressure if you prefer.

regards,
Robert

-- 
    Robert Dingli   r.dingli at ee.mu.oz.au
Power and Control Systems    (+613) 9344 7966
Thermodynamics Research Labs (+613) 9344 7712
     University of Melbourne, AUSTRALIA 
**  he who dies with the most toys, wins  **