specific fuel consumption

Specific fuel consumption (SFC) measures how efficiently an engine or machine uses fuel to produce a certain amount of work, typically expressed as units of fuel per unit of power per hour (e.g., grams per kilowatt-hour). It indicates the fuel efficiency of an engine—lower SFC means better efficiency, using less fuel to generate the same power. This metric helps compare engine designs and operational performance, guiding choices for fuel economy and performance optimization. Essentially, it reflects how effectively an engine converts fuel into useful work.