- engine efficiency
- The ratio of the propulsive power developed to the fuel power consumed. Specific fuel consumption (SFC) is one of the measures of engine efficiency.Propulsive efficiency of various types of jet engines.
Aviation dictionary. 2014.
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efficiency of a heat engine — efficience ef*fi cience ([e^]f*f[i^]sh ens), efficiency ef*fi cien*cy ([e^]f*f[i^]sh en*s[y^]), n. [L. efficientia.] 1. The quality of being efficient or producing an effect or effects; efficient power; effectual agency. [1913 Webster] The manner … The Collaborative International Dictionary of English