external-combustion engine(redirected from External combustion engine)
Also found in: Thesaurus, Encyclopedia, Wikipedia.
An engine, such as a steam engine, in which the fuel is burned outside the engine cylinder.
(Mechanical Engineering) a heat engine in which the working fluid is heated in an external boiler or heat exchanger and is thus isolated from the process of fuel combustion
an engine, as a steam engine, in which fuel ignition takes place outside the cylinder or turbine.
Switch to new thesaurus
|Noun||1.||external-combustion engine - a heat engine in which ignition occurs outside the chamber (cylinder or turbine) in which heat is converted to mechanical energy|
heat engine - any engine that makes use of heat to do work
steam engine - external-combustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder