The internal combustion engine is a machine that develops power from the combustion of fuel within a cylinder. The cycle of operation is as follows:
a) Suction Stroke- Just before the piston reaches the inner dead-centre, a valve, usually of the «poppet» type, is opened.
On its outward stroke, the piston draws into the cylinder an explosive mixture of air and fuel vapour.
Shortly before the piston reaches the outer dead-centre, the inlet valve is closed and the compression stroke begins.
If, on the other hand, the explosive mixture is ignited too early, the maximum pressure is reached before the piston has completed its inward journey, and engine is slowed down or even stopped.
d) Exhaust Stroke- The burnt gases are driven out in front of the and its return until the inlet valve again opens, when the cycle is repeated.
|
|||||||||||||||||
|
|
|
Похожие вопросы |