How does the shock absorber work?


The shock absorber is a suspension component that contr […]

The shock absorber is a suspension component that controls the bounce of the vehicle's wheels. Their main job is to restrain the movement of the vehicle and prevent it from bouncing on the suspension springs while driving. To test the shock absorber of the vehicle, just press each corner of the vehicle and observe its bounce. The vehicle should bounce up and return to its neutral position. If it continues to bounce, the shock absorber should be replaced.

The shock absorber limits the movement or sway of the entire body. They support the springs in your car, ensuring that they do not bounce back when hitting rough surfaces. In this way, they can absorb and balance the bumps of your car. They are also responsible for keeping your tires in contact with the road at all times.

The working principle of the shock absorber is fluid displacement in the compression and extension cycles. A typical car or light truck has more resistance in its extension cycle than its compression cycle. The compression cycle controls the movement of the unsprung weight of the vehicle, while the tension cycle controls the heavier sprung weight.

The shock absorber is basically an oil pump. The piston is connected to the end of the piston rod and acts on the hydraulic fluid in the pressure pipe. When the suspension moves up and down, the hydraulic oil is forced to pass through a small hole in the piston, called an orifice. However, these orifices only allow a small amount of fluid to pass through the piston. This slows down the speed of the piston, which in turn slows down the movement of the spring and suspension.