3315495 - Introduction - REAR SUSPENSION

DESCRIPTION

Introduction

The rear suspension is the multilink type designed to allow:

• the recovery of the camber during roll to keep the tyre vertical in order ot maximize the lateral force which can be transmitted
• the elasto-kinematic retraction of the wheel centre whilst the obstacle is being overcome to reduce the longitudinal component of the impact force
• the control of the steering round bends and during braking for a stabilizing effect and prompt response in the various usage conditions.

1, Crossmember 2, Track control arm 3, Camber control rod 4, Toe in control rod 5, Vertical connecting rod 6, Steering knuckle 7, Spring/shock absorber assembly 8, Anti-roll bar

Characteristics of the suspension

Recovery of camber during rollThis has been made possible thanks to the action of the upper arm during the vertical travel of the wheel.It allows the renewal of the wheel - road contact round bends.It controls the steering round bendsUnder the action of a lateral load (Fc), the outer wheel acquires toe in and improves the promptness of the response of the vehicle to the driver's request.This is made possible thanks to the greater flexible yield of the lower track control arm (A) bushes compared with that of the toe in control rod (B) bushes.Stabilization during brakingThis makes it possible to achieve the realignment of the vehicle when the longitudinal ground forces acting on the wheels are different.It is possible to achieve this effect by increasing the toe in of the rear wheels during braking.This is made possible thanks to the greater flexible yield of the lower track control arm (A) bushes compared with that of the toe in control rod (B) bushes following the torque produced by the force (Ff) acting on the arm (C).Flexible retraction of the wheel centre when overcoming the obstacleIt allows the optimum absoprtion of road uneveness.This effect is obtained through the flexibility of the arm - steering knuckle joints (B-M) and the mounting point (E) for the lower track control arm.Kinematic retraction of the wheel centre during the vertical travelThis effect has a synergic role with the flexible retraction for overcoming longitudinal obstacles, with optimum absorption of energey and therefore scant repercussion of the vibrations transmitted to the passenger compartment.This retraction also introduces the antidive effect.It is achieved through the movement, following a vertical travel of the suspension, of the wheel centre (O) along the axis (Y).