Noise pollution is also a very important factor, which becomes decisive in the case of electric vehicles: compressors are generally mounted at human height and it is therefore essential to reduce noise as much as possible.
In addition, the overall dimensions must be limited: machinery capable of adapting to small and easily accessible spaces is required, so that maintenance activities can be carried out easily and in the shortest possible time.
Furthermore, compressed air is often used for critical systems, such as, for example, the braking system, air suspensions or the opening and closing of doors. Operation must therefore be guaranteed in all conditions and for long periods of time without interruption.