How does the American air suspension work. In fact, there are many types of air suspensions, such as the air suspension system used in some luxury cars in the early days. By adjusting the air flow rate between the two air chambers, the suspension software and hardware can be changed without height adjustment function. In this paper, the popular high low flexible and hard adjustable air suspension is taken as an example.
The length of the spring can be changed by changing the volume of the air chamber (up and down direction). The main structure of the American air suspension is almost the same as the spiral spring+shock absorber I am familiar with, except that there is a closed air chamber on the upper part of the spiral spring. To adjust the distance from the vehicle body to the ground and change the soft and hard characteristics horizontally; In addition, the motor changes the size of the air vent in some parts of the shock absorber to adjust the damping force of the shock absorber.
American air suspension must involve a set of mechanisms for pumping air and storing high-pressure gas. However, the volume of the air chamber should be changed by inflating the air volume and the maintenance of the vehicle body level. It is determined by the corresponding sensor and electronic control unit. Take Volkswagen Touareg as an example. Its electric air pump is placed on the chassis, probably under the passenger seat, while the high-pressure air reservoir is located next to the spare wheel in the boot.
