Suspension/damping, function - GF32.50-P-2000A

MODEL 215, 220, 230 up to 28.2.06 with CODE (487) Active body control (ABC) 

Fig 1: Suspension/Damping Function Diagram

The suspension and damping in the case of the active body control is performed by a hydraulic positioning cylinder (plunger) in each spring strut for the low-frequency body movements (up to approx. 5 Hertz). This cylinder alters the position of the base point of the coil spring for this purpose.

This makes it possible to minimize and optimally damp the following body movements:

• in the direction of the vehicle vertical axis (lift), produced in particular by uneven road surfaces.
• about the vehicle transverse axis (pitch), produced by braking and accelerating as well as undulating road surfaces.
• about the vehicle longitudinal axis (roll), produced in particular by cornering and by a road surface with a differing degree of flatness on the left and right.

The higher-frequency oscillations of the wheels are insulated vis-aA-vis the body and damped in a conventional way by means of passive elements (steel springs and shock absorbers with a uniform setting).