[Diy_efi] Measuring air and fuel flow

[Mauricio]

	I am trying to figure out the air/fuel ratio in a turbodiesel 
so I can calculate how much fuel I will need if I increase the 
compressor in my turbine.  What would be the best/cheapest way to do 
so?  I plan on reading it using some kind of sensor (for air and 
fuel)  into a PIC computer and then download it afterwards. Here are 
some possibilities I thought about:

1) Air
o Using a hotwire airflow sensor.  I have at home the one of a 90 
Mustang LX (the engine is apart so it is not needing it for now ;), 
but do not know its pinout and signal information.  Another option is 
to go junkyard shopping for a Bosch hotwire since *hopefully* there 
may be more info on it.  Sensor would be somewhere between the 
airfilter and the turbo.

o Use a MAP sensor upstream of the turbo to measure the static 
pressure and then estimate airflow from there.  A proper setup, I 
assume, would also have to measure the air temperature after the 
airfilter so I can get density.

2) Fuel
I was told there are in the boat industry some kind of setup you can 
measure the fuel flow.  Does anyone know how can I do that?

3) Throttle position
What I would be measuring here is nothing but the pedal position 
somewhere, so I can say if I am at idle, partial, or full throttle, 
and correlate that to the rest of the data.  Thsi should not pose a 
problem.

	Suggestions are always welcome. =)

_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi