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262 ELECTRIC/ELECTRONIC SYSTEM D AILY Base - May 2004 The vehicles not equipped with ABS / EBS / ABD system need a system providing a better control of the braking action on the rear wheels. This system includes an dual brake action compensator and a brake action compensator pneumatic actuator. Depending on the load applied on the rear axle, as detected by the pneumatic actuator, the brake action compensator automatically adjust the braking torque applied to the axle by the brakes. 0.15 as a function air spring variations. BRAKE ACTION COMPENSATOR UNIT 1. Dual brake action compensator 2. Pneumatic actuator for brake action compensator OPERATION DIAGRAM A. Hydraulic output pressure (bars) - B. Hydraulic control pressure (bars) - C. Pneumatic control pressure (bars) - D. Characteristic curve with 0.15 ratio (empy) - E. 1:1 ratio (loaded) - F. Characteristic curve of pneumatic pressure/load 1 2 Figure 304 Figure 305 000372t 000371t |