Car air suspension system, technical illustration. Air suspension is one type of vehicle suspension that is powered by an electric or engine-driven air pump or compressor. This compressor pumps the air into a flexible bellows, usually made from textile-reinforced rubber, better if there is a storage tank. The air pressure inflates the bellows, and raises the chassis from the axle. But it's a lot more fun than that, especially with a large storage tank and large dia. tubing. Technical automotive illustration. Cutaway vehicle.