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here is the equation i use for my vehicles:
A*(1/3600000)*(17.4)*(3)*E*(60)*(1)
that will create fuel flow in Lb/Hr. since you have fuel flow measured in volume, not weight, your equation will be different.
A is pulse width in mSec
17.4 is injector flowrate in lb/hr
3 is the number of injections per revolution(6 cylinder engine, so 3 injectors fire per rev)
E is RPM
1 is number of times the injector is fired per 4-stroke cycle(a lot of earlier stuff fired twice per 2 revs, so those would use a 2)
then to convert that into a volume/hr(gallons/hr) value:
A/6.073
A being the previous result, 6.073 being the weight in lbs of 1 gallon of gasoline.
then simply A/B, A being MPH, B being Gallons/Hr.
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