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The IC engine has four steps to complete one cycle as follows: We know that when the engine returns back to the stroke where it starts we say that one cycle has been completed. In internal combustion engines, when the IC engine is working continuously, we may consider a cycle starting from any strokes. The IC engine has a higher thermal efficiency than the thermal efficiency of EC engines. In IC engines (internal combustion engines) the combustion of takes place inside the cylinder, therefore the thermal energy of the fuel is directly converted into mechanical work. Working Principle of Internal Combustion Engines It stores excess energy during power and gives out during the compression stroke.The main function of the flywheel is to maintain speed constant.
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