internal-combustion engine
Heat engine in which fuel is burned inside the engine, contrasting with an external-combustion engine (such as the steam engine) in which fuel is burned in a separate unit. The diesel engine and petrol engine are both internal-combustion engines. Gas turbines and jet and rocket engines are also considered to be internal-combustion engines because they burn their fuel inside their combustion chambers.
© RM 2012. Helicon Publishing is division of RM.
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