According to the driving characteristics of automobiles, the following requirements are specially put forward for the shock absorber:
1. In the compression stroke of the suspension (the wheels and the body are close to each other), the shock absorber should have a small damping force to make full use of the buffering effect of the elastic element and reduce the impact of the road on the body.
impact.
2. During the extension stroke of the suspension (the wheel and the body are far away from each other), the shock absorber should generate a large damping in order to rapidly damp the vibration.
3. When the relative speed between the wheel (axle) and the body (frame) is too large, the shock absorber should be able to automatically increase the flow area of the overflow hole to limit the excessive growth of the damping force and avoid the appearance of the shock absorber. Excessive shock load