Quote:
Originally Posted by ozwallaby
Wouldn't the fuel curves shown be taken at WOT ( wide open throttle) and therefore change as load changes. So these figures may be different from what actually happens "driving down the road".
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Yes they are.
You can find the occasional one showing every little island in the BSFC map. But not for engines we're interested in.
But the trend still seems to hold. Get your cruise rpm close to max torque (min BSFC) and you'll hit the best operating conditions more often than any other rpm.