Measures of Engine Performance
Engine types vary greatly in a number of different ways:
- energy efficiency
- fuel/propellant consumption (brake specific fuel consumption for shaft engines, thrust specific fuel consumption for jet engines)
- power-to-weight ratio
- thrust to weight ratio
- Torque curves (for shaft engines) thrust lapse (jet engines)
- Compression ratio for piston engines, overall pressure ratio for jet engines and gas turbines
Read more about this topic: Internal Combustion Engine
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—Alfred Döblin (1878–1957)
“I hear America singing, the varied carols I hear,
Those of mechanics, each one singing his as it should be blithe and
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The carpenter singing his as he measures his plank or beam,
The mason singing his as he makes ready for work, or leaves off
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—Walt Whitman (1819–1892)
“The machine unmakes the man. Now that the machine is perfect, the engineer is nobody. Every new step in improving the engine restricts one more act of the engineer,—unteaches him.”
—Ralph Waldo Emerson (1803–1882)
“No performance is worth loss of geniality. ‘Tis a cruel price we pay for certain fancy goods called fine arts and philosophy.”
—Ralph Waldo Emerson (1803–1882)