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Old 04-30-2014, 09:42 AM   #213 (permalink)
TheTestPilot
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Join Date: May 2011
Location: Southern Skies Australia
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untested flow sensor idea

DOPPLER sensor sounds interesting ,but the development/learning curve for the hardware,then the code ,needs more time than I currently have available.

I have cobbled together some electronics for two pressure sensors ,either side of a fuel line restriction (say 2mm) & a reference from the ignition pulse,combine these three inputs together & this produces a variable square (pwm) just like an injector drive signal ,based on fuel flow & rpm(MPGuino compatable?).
This works on my bench ,but I have yet to order the pressure sensors , (these are $50 a sensor ,ouch & hostile liquid compatable) & test it in the real world.
There is another problem with some mechanical pumps on carb cars ,severe pulsation ,this needs to be damped if present , so the sensors are not overwhelmed ,ahh it just never ends.

I can't try this until at least Mid june when I return from Asia.

This is certainly not cheap, but if it works ,I will be extremely happy.

Tp
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