fuel/torque/hp

Brian Neill Tiedemann s914440 at minyos.its.rmit.EDU.AU
Mon Jun 24 15:52:34 GMT 1996


WRT the question of fuel mapping curves and how they relate to torque/hp
curves, I believe the key is that torque is RPM specific, as is fuel pulse
width required, whereas hp is dependant on both torque and RPM....clear as
mud? What I am saying is that though the engine torque output changes with
RPM, the hp changes with torque AND rpm, so mapping fuel pulse width
directly to hp may not be correct, but mapping it to torque kinda makes
sense.

(Fuel pulse repetition rate varies with RPM too-obviously)

hope my logic makes some backward sense to others...
Brian.

P.S. something inside me wonders about specific energy*mass of fuel and
whether that should not map directly to work output of engine. mmmmm that
means torque doesn't it? I guess this would be true in an IDEAL (read not
real) engine, but mechanical and volumetric efficiency probably change
things.....



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