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Old 08-12-2014, 07:08 AM   #5 (permalink)
oldtamiyaphile
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BSFC, 'peak efficiency' is the point at which the engine makes the most torque per unit of fuel.

That's not to say the engine never uses less fuel than at BSFC.

That is to say, if you don't need the amount of torque you'd get at BSFC, you'll use less fuel lower in the rev band.
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