engine efficiency
Power output ratio
Engine efficiency is how much of a fuel's energy an engine converts into useful work.
Internal combustion engines typically waste most energy as heat; even efficient designs convert only 30-40% of fuel energy into motion.
The term appears in discussions of fuel economy, environmental impact, and engine design: Diesel engines have higher engine efficiency than gasoline engines.
- thrustForceful forward motion
- fuel consumptionRate of burning energy
- miles per gallonAutomotive efficiency metric
- torqueRotational force measurement
- tuneMusical sequence of notes
idle speed · cold start · cooling systems · entropy · energy density · enthalpy · combustion chamber · spark plug · fuel injection · air intake · octane rating · turbocharging · heat transfer · waste heat · valve timing · gear ratios · second law of thermodynamics · fuel additives
- green transportelectric car, electric vehicles, electric bus, EVs, electric bike
engine efficiencypower output
Energy delivered per time
displacement · high performance · gas guzzler · top speed · acceleration