The design of the compressors with which we usually deal in motor vehicles is of displacement type piston type. The reciprocating motion of the pistons produced by the crankshaft rotation and the connecting rod increases the pressure in the cylinders.
Depending on the air requirements in the pneumatic system, one or more piston compressors with one or two compression systems are available. The head is an integral part of any piston air compressor. The suction and discharge valves are located there and very often the cooling system channels. The latest pneumatic systems include a special valve system that compresses air with an air compressor to control its performance, resulting in measurable power savings.