We had a long thread on this many months ago. The short answer is that
     if your vehicle has fuel injection, then the trick is to measure the
     pulse rate to the injector solenoids. Multiply this by the average
     fuel quantity injected per pulse, and you have fuel flow.

     The only problem is I don't know where you would get the injection
     quantity per pulse value, but it might be in the shop manual for the
     vehicle in question.


     CIAO - Martin.


______________________________ Reply Separator _________________________________
Subject: Instantaneous Fuel Consuption Measurement
Author:  pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU> at
Internet
Date:    6/25/98 10:08 AM


Hi there!

  WITHOUT going way OT like in that injection discussion, I would like
to know if someone has used some kind of sensor to measure fuel flow.
  The idea is to measure the instantaneous fuel consuption. Problem is
that it's a small flow. If cars spent more fuel, it would be a lot
easier! 8)
  Why am I here?
  Well, I want to build a small car-computer, based on PIC. I really
would like to include fuel consuption indication on its features.

  Thanx,

Nuno Pedrosa.


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  /\/ /  Nuno Filipe Freitas Pedrosa                   __ /..\__/
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