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WORKING OF TWO STROKE CYCLE ENGINE

 In Two stroke engines, one working cycle is completed in two strokes of the piston (i.e;  one up and down movement) or one revolution of the crankshaft. Hence it is called two stroke engines. 




On working Cycle consists of the following four processes.

i) Suction

ii) Compression 

iii) Power or Expansion 

iv) Exhaust 

It consists of  a cylinder in which all the operations are performed. The piston reciprocates inside the cylinder.

The piston is connected to the crankshaft through connecting rod and the crank. Inside of the cylinder, valve ports are placed. Opening and closing of ports are performed by the position of the piston.

 In case of compression Ignition (CI) Engines, The spark plug is replaced by the fuel injector. A two - stroke engine consists of  ports instead of valves. In two stroke engines  both the suction and compression process are carried out in the first stroke, expansion and exhaust processes in the second stroke. Therefore, it develops power in each revolution of crankshaft.


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