Knorr-Bremse Ag

Knorr-Bremse Systeme Fur Nutzfahrzeuge Gmbh

Mathias Mayr-Frohlich

Alfred Utzt

In order to adapt the brake force of a towed vehicle or trailer in an optimal fashion, it is necessary to know the coupling forces between the towing vehicle and the trailer or towed vehicle. One prerequisite for determining this coupling force is the knowledge of the total mass of the vehicle. This total mass is determined from an energy balance that contains the variables of the speed, a parameter of the brake energy and one parameter of the driving energy which are provided by systems that already exist in the motor vehicle. For this purpose, three energy balances are established at three different times, with the total mass of the motor vehicle and the slope of the road being determined from the three energy balances. A trailer brake valve subsequently is adjusted depending on the vehicle mass.

Method and device for adjusting the brake force distribution between a

In the anti-locking braking system with limiting yawing moment, a first functions generator (1) interrogates the settings of the monitored valves and, from the derivative trends over time of the valve settings and in accordance with a predetermined function derives a signal which represents the brake pressure in the monitored wheel brake cylinders.

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Munich, Germany

Mathias Mayr-Frohlich