Pic. 15.1. Front suspension
The suspension is the link between the body and the wheels (pic. 15.1). Through it, the forces acting on the wheels are transmitted to the body. The suspension serves to reduce dynamic loads, reduce body vibrations, mitigate wheel impacts on road roughness, and ensure vehicle stability and smoothness. The possibility of body movements and the reduction of angular oscillations around the longitudinal and transverse axes of the vehicle depend on the geometry of the suspension and its rigidity.
Pic. 15.2. Drive shaft and front wheel hub: 1 - dynamic damper; 2 – rotary fist; 3 - front wheel hub; 4 – bearing of a nave of a forward wheel
The front wheel hub and ball bearing are installed with an interference fit in the steering knuckle. The splines of the drive shaft are inserted into the hub, the support of which it is (pic. 15.2).
To increase transmission efficiency and reduce noise and vibrations, constant velocity joints are used in the drive shaft (CV joints): from the side of the hub - type «Bierfeld» (B.J.), from the side of the gearbox - type «tripod» (T.J.).
McPherson front suspension (telescopic spring struts with coil springs). Double-acting hydraulic shock absorbers.