The automotive industry has always developed systems based on compressed air in its production lines. In this article we will be exploring the introduction of compressed air into automobile suspension systems.

Since the 1920s, engineers have tried to develop systems that work with compressed air. Actually, all major 'gladiators' fighting in the global automotive industry arena have adopted the air suspension in their models. This is a technology still in development, which aims to provide suitable driving comfort.

Despite each manufacturer choosing a specific name for this system, the principle of operation remains the same. It is based on a mix of pneumatic and electronic components. The initial goal for these manufacturers is to ensure a high level of comfort to attract more potential customers, and to prove their supremacy.

With the evolution of this technology, this process has become entry level equipment for all major German, British, and American brands, especially in SUVs and big sedans. Operation is simple -  an electrical compressor compresses the air and sends it in a closed circuit. Compression pressure is regulated and distributed by regulators and valves. The compressed air is then sent to inflatable air cushions that replace conventional shock absorbers.

A set of electronic control units and sensors ensures the correct operation of the system so that the  quantity of compressed air in the pneumatic dampers varies according to the condition of the road and the desired mode of conduct. In comparison with industrial air compressor services, the system adopted in cars faces more technological constraints, as the compressor needs to be replaced after only few years.