Car Parts Audi Q7 Front Air Suspension Strut 4N4616040G 4N4616040F

About Air suspension and its uses
Pneumatic air struts, an air compressor, a solenoid valve block, an accumulator tank, and air lines that connect these components together.The air suspension strut is made up of an air spring that acts as the coil spring and a solenoid which provides the dampening effect by magnetically resisting the linear motion of the piston. The air spring is comprised of a pressurized rubber bag or “U-bellow” surrounding a cylinder-piston setup. In order to enhance durability, the bellow is made up of polyamide cord woven inserts surrounding an elastomer (i.e. rubber) that ensures the bellow remains air-tight. In order to improve the response behavior to external forces such as those encountered during cornering or while driving over bumpy roads, the bellows are often encased in an aluminum cylinder. Some air suspension struts have an air reservoir attached to the air spring in order to have a sufficient volume of air necessary to satisfy comfort requirements without increasing the diameter of the strut. This is often done in the rear struts of Audi vehicles in order to maintain a large boot space.

A series of body level and acceleration sensors feed information into a control module that in turn instructs the accumulator, compressor, and valve block to move air around accordingly.

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