The air compressor

Whether trains, buses, trucks or construction machinery: air compressors generate the compressed air that allows a number of safety and comfort systems to work in commercial vehicles. Examples include the brake system, pneumatic suspension, pneumatic actuating elements, airsprung driver's seats, the pneumatic opening and closing of doors as well as the kneeling function in city buses or the raising and lowering of loading ramps or other equipment to handle loads.

Apart from the conventional design of singlestage air compressors with only one pressure chamber, an increasing number of dual-stage air compressors are now being installed. They are characterised by a lower power in operation, and are therefore much more energy effi cient than single-stage aggregates.