The basic knowledge of shock absorber -1

The shock absorber (Absorber) is used to suppress the shock and the impact from the road surface when the spring rebounds after absorbing the shock. It is widely used in automobiles to accelerate the attenuation of the vibration of the frame and the body to improve the driving comfort of the automobile. When passing on uneven roads, although the shock-absorbing spring can filter the vibration of the road, the spring itself will reciprocate, and the shock absorber is used to suppress the jump of this spring. 

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How it works

In suspension system, shock is generated by the impact of elastic elements, in order to improve the smoothness of the car driving, the suspension is paralleled with the elastic elements to install shock absorbers, for attenuation vibration, Car suspension system using shock absorbers are mostly hydraulic shock absorbers, the principle of its working is when the frame (or body) and the axle vibration and relative movement, the shock absorber in the piston moves up and down, the shock absorber cavity of the oil from one cavity through different pores into another cavity. At this point, friction between the hole wall and the oil and the internal friction between the oil molecules form dampening force on the vibration, so that the car vibration energy into the oil heat, and then absorbed by shock absorbers to the atmosphere. When the oil channel cross-section and other factors remain the same, the damping force increases or decreases with the relative speed of motion between the frame and the axle (or wheel) and is related to the viscosity of the fluid.
Shock absorbers and elastic components are tasked with slow impact and shock absorption, and the damping force is too large, which will make the suspension elasticity worse and even damage the shock absorber connections. Therefore, it is necessary to adjust the contradiction between elastic elements and shock absorbers.
(1) In the compression travel (axle and frame close to each other), the damper damping force is small, in order to give full play to the elastic effect of the elastic element, to mitigate the impact. At this point, the elastic element plays a major role.
(2) During the suspension stretch (the axles and frames are far away from each other), the damper damping force should be large and the shock absorber should be rapid.
(3) When the relative speed between the axle (or wheel) and the axle is too large, the shock absorber is required to automatically increase the flow of liquid, so that the damping force is always within a certain limit, in order to avoid being subjected to excessive impact loads.
In the automotive suspension system is widely used in the barrel shock absorber, and in compression and extension travel can play a shock-absorbing role called two-way action shock absorber, as well as the use of new shock absorbers, including inflatable shock absorbers and resistance adjustable shock absorbers.

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Max Auto supply all kinds of shock absorber components , include : piston rod , stamping part ( spring seat , bracket ) , shims , powder metallurgy parts ( piston , rod guide ) , oil seal and so on .
Our main customer such as : Tenneco , kyb , Showa , KW .

Post time: Sep-26-2021