Robert Boschgmbh

Oliver Lah

Christian Zimmermann

Helmut Wandel

Stefan Diehle

Ruediger Poggenburg

Matthaeus Koch

Steffen Ullmann

Matthäus Koch

A method and device for driving a pump of a brake system, in which a pump motor achieves full drive for a particular time following a braking request from the brake system. During the subsequent clocked driving action, a drive signal is subjected to a pulse width modulation based on a direct comparison between a motor voltage and a voltage threshold value. Due to a subsequent comparison between the motor voltage and a safety threshold, and the resulting full drive for the particular time, an increased load on the pump causes the pump to produce the necessary delivery capacity. In addition, a selectable maximum off-time of the pump motor guarantees a minimum pump on-time per drive cycle. The pump can be made to achieve full drive prematurely as a function of certain conditions which can be subjected to a preventive check, thereby avoiding an excessively high load. It is also possible to coordinate the way in which different control strategies access the pump.

Method and device for controlling a pump of a brake system

A method of stabilizing a vehicle equipped with a slip-controlled brake system is described. This is done by determining the wheel speeds of the individual wheels of the vehicle. For at least one wheel, a wheel speed setpoint is determined. For the at least one wheel, a deviation quantity describing the deviation between the wheel speed determined for that wheel and the setpoint is determined. To stabilize the vehicle, actuators assigned to the at least one wheel are activated as a function of this deviation quantity.

Method and device for stabilizing a vehicle equipped with a slip-controlled brake system

Growing community of inventors

Weissach, Germany

Oliver Lah