Brake-specific fuel consumption, or BSFC, measures the fuel efficiency of any prime mover, such as an internal combustion engine, that burns fuel to produce rotational or shaft power. It is calculated as the rate of fuel consumption divided by the power produced, traditionally in pounds of fuel per hour per brake horsepower, or in SI units as the inverse of specific energy. Because it is calculated the same way for any engine, BSFC allows the fuel efficiency of different engines to be compared directly; the term brake refers to the historical practice of measuring torque with a Prony brake. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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1. Wikipedia: Brake-specific fuel consumption
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Brake-specific fuel consumption (BSFC) is a measure of the fuel efficiency of any prime mover that burns fuel and produces rotational, or shaft power. It is typically used for comparing the efficiency of internal combustion engines with a shaft output.
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