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Old 11-26-2003, 04:23 PM
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Brake Specific Fule Consumption (BFSC) is a DYNO metric to describe fuel consumption rate. An engine on a dyno is stationary and the fule consumption cannot be measured in miles per gallon. Many dynos are equipped with a fuel flow meter and this meter shows you the fuel flow in pounds per hour. The rate at any given RPM divided by the Brake Horsepower at that same RPM is called the BSFC. The lower the number the less fuel used.

BSFC = Fuel Pound per Hour/ Brake Horsepower
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