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Originally Posted by venkatrx If rpm=2500 and your accelerator pedal pressed = constant (say 25% pressed) then the 'fuel consumption' is constant regardless of AC being on/off.
but remember that part of fuel consumed will go towards driving AC if it was on  hence your 'fuel efficiency' will go down. |
Even then, engine rpm is related to work done by the engine, higher rpm more work done, so keeping rpm constant means keeping the work done by engine constant too, right?
So, (correct me if i'm wrong) at constant rpm, your performance might go down, in terms of acceleration and pick up, but as you are holding the throttle constant, you are effectively controlling the amount of fuel being injected, hence the theory that you might have the same amount of fuel consumed with the a/c in "on" or "off" position. my hypothesis really