Shock absorbers and elastic components undertake the tasks of cushioning and shock absorption. Excessive damping force can cause suspension elasticity to deteriorate and even damage the shock absorber connections. Therefore, it is necessary to adjust the contradiction between elastic components and shock absorbers.
(1) During the compression stroke (where the axle and frame are close to each other), the damping force of the shock absorber is relatively small, in order to fully utilize the elastic effect of the elastic components and alleviate impact. At this point, elastic components play a major role.
(2) During the stretching stroke of the suspension (the axle and frame are far away from each other), the damping force of the shock absorber should be large and shock absorption should be rapid.
(3) When the relative speed between the axle (or wheel) and the axle is too high, it is required that the shock absorber can automatically increase the fluid flow rate to maintain the damping force within a certain limit, in order to avoid bearing excessive impact loads.
Tubular shock absorbers are widely used in automotive suspension systems, which can provide shock absorption during both compression and extension travel. They are called bidirectional shock absorbers, and new shock absorbers are also used, including inflatable shock absorbers and adjustable resistance shock absorbers.
