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Working of Single Stage Reciprocating Air Compressor

The Single stage Reciprocating Air compressor, operates on a two-stroke cycle as follows, 

 Stroke 1 (a-c) : 

 The piston withdraws, causing the air in the clearance volume to expand, and when the pressure in the   cylinder falls below atmospheric pressure (at b) the inlet valve opens the air is drawn into the cylinder   for the remainder of  the stroke.   

 Stroke 2 (c-a) : 

 The piston moves inwards, compressing the air in the cylinder , and the inlet valve closes when the   cylinder pressure reaches atmospheric pressure. Further compression follows as the piston moves       towards the top of its stroke until, when the pressure in the cylinder is more often that in the receiver, the   delivery valve opens and air is delivered to the receiver for the remainder of  the stroke. 




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