Compressed Air Engine

Description

A pneumatic motor (air motor) or compressed air engine is a type of motor which does mechanical work by expanding compressed air. Pneumatic motors generally convert compressed air energy to mechanical work through either linear or rotary motion. Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor, piston air motor, air turbine or gear type motor. Pneumatic motors have existed in many forms over the past two centuries, ranging in size from hand-held motors to engines of up to several hundred horsepowers. Some types rely on pistons and cylinders; others on slotted rotors with vanes (vane motors) and other use turbines. Many compressed air engines improve their performance by heating the incoming air or the engine itself.