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What is an external combustion engine?

Updated: 10/26/2022
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9y ago

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An external combustion engine is one in which the oxidation of the fuel occurs outside the engine, which provides heat to the motive portion of the engine. External combustion is characterized by burning the fuel outside of the moving parts, as opposed to burning fuel inside the cylinders of an internal combustion engine.

The Steam engine, using steam pressure, is an example of external combustion, as in the "Stanley Steamer," an early motorcar; and in steamships The combustion is in the boiler, not in the cylinders that convert steam pressure and volume to mechanical work.

Internal combustion engines include diesel and gasoline vehicles (explosive fuel mixes), gas turbines, and most jet aircraft engines.

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