Question

How are internal combustion engines different from external combustion engines?

Answer 1

External combustion engine run smoothly and silently where of internal combustion engines are very noisy.Noise produce from continuous explosions inside the cylinder of IC engine.

Answer 2

An external combustion engine (EC engine) is a heat engine where a working fluid, contained internally, is heated by combustion in an external source, through the engine wall or a heat exchanger. The fluid then, by expanding and acting on the mechanism of the engine, produces motion and usable work.