Air suspension is a type of vehicle suspension powered by an electric or engine driven air pump or compressor. This pump pressurizes the air, using compressed air as a spring. Air suspension is often used in place of conventional steel springs, and in heavy vehicle applications such as buses and trucks. If the engine is left off for an extended period, the vehicle will gradually settle to the ground. The purpose of air suspension is to provide a smooth, constant ride quality and in most cases it is self-leveling. Air pressurizes the bag and in turn raised the chassis from the axle. Although traditionally called air bags, the correct term is air bellows.
Read more about Air Suspension: Overview, Custom Applications, Common Air Suspension Problems, Use On Coaches and Buses
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