Wednesday 17 August 2016

Engine

Engine:An engine is a machine designed to convert one form of energy into mechanical energy.



Classification of engines:

External combustion engine:In this case,cumbustion of fuel takes place outside the cylinder as in case of steam engines where heat of the cumbustion is employed to generate steam which is used to move  a piston in a cylinder.

Internal combustion engine:The internal combustion engine is an engine in which the combustion of a fuel (generally, fossil fuel) occurs with an oxidizer (usually air) in a combustion chamber.In an internal combustion engine the expansion of the high temperature and high pressure gases, which are produced by the combustion,directly applies force to components of the engine, such as the pistons or turbine blades or a nozzle, and by moving it over a distance, generates useful mechanical energy.




ref:www.mech4study.blogspot.com









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