Quote:
Originally Posted by EcoCivic
I hear all the time that engines run most efficiently at the RPM they make peak torque at, but if that was the case I would be most efficient at 5K+ RPMs. Or maybe that is only true at full throttle on gasoline engines?
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The most efficient power boost, probably. Not for the best fuel efficiency. That should be at the point where the engine delivers a comfortable amount of power for the speed driven. At legal speeds, that is mostly at lower rpm's with both diesel and petrol engines.
For my diesel it is between 1600 - 1900 rpm. Maximum torque at 2200 rpm.