Robert Boschgmbh

Philipp Grell

Jens Kolarsky

Carsten Bodmann

Raphael Oliveira

Heiner Messner

Julien Bregeault

Ulrich Mahlenbrey

Mark Unbescheiden

Michael Kunz

Dirk Foerch

Michael Bunk

Werner Quirant

Timo Jahnz

Hans Heckmann

Harald Hermann

Thomas Loeffler

A method for controlling a valve for maintaining brake pressure in a specified region of a brake circuit in a motor vehicle, in which the valve is controlled using a first control method, the specified region of the brake circuit is monitored with respect to the occurrence of a loss of brake pressure, and in response to a detected loss of brake pressure, the valve is controlled using a second control method.

Method and device for carrying out a stationary holding function on a motor vehicle

To achieve a specifiable, and thus reproducible final pressure in at least one part of the brake circuit, the pump is first actuated for pressure buildup or pressure reduction when the valve is closed. When a first specified setpoint pressure is reached, or when a pressure threshold value is exceeded, the valve is put into an open position using a first actuation. After the pump is switched off, the actuation of the valve is modified in such a way that, during a specifiable time, a continuous change of the first actuation is undertaken all the way up to a second actuation, in which the valve assumes a holding position, particularly while taking into consideration the pressure difference which prevails at the valve.

Method and device for the reproducible generation of a specifiable final pressure in a braking system

The invention relates to a method for operating a braking system for motor vehicles with electrically actuated hydraulic valves, the coils of which are powered up, at least in phases, with currents which modify the currentless state of the hydraulic valves, in order to heat the hydraulic fluid present in the system. The hydraulic fluid is heated via a heating profile which, in accordance with the hydraulic fluid temperature, activates the heating phase of the hydraulic fluid. The heating profile consists of a first heating phase and, subsequent thereto, a second heating phase. During the first heating phase, the coils are powered up in such a way that the coil temperature at the end of the first heating phase corresponds to a pre-defined temperature value of the coil which is at least approximately maintained during the second heating phase when powering up the coils.

Method for operating a brake system for motor vehicles

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Bietigheim-Bissingen, Germany

Philipp Grell