Robert Boschgmbh

Martin Kieren

Andreas Offenhaeuser

Nils Hagenlocher

Erik Lesser

Andreas Schumann

Flavio Nardi

Michael Knoop

Andreas Erban

Lutz Buerkle

Christian Braeuchle

Thomas Maurer

Matthew Nimmo

Thomas Haeussler

Gero Nenninger

Andris Samsons

Alexander Reckefuss

Antonio Mallol Torralbo

Christian Reiner

Wadim Napolskich

A method for operating a driver assistance system for motor vehicles, which each include multiple wheels in contact with a roadway, at least one of the motor vehicles ascertaining at least one instantaneous friction coefficient between at least one of the wheels and the roadway with the aid of at least one friction coefficient model, and at least one driver assistance unit of the respective motor vehicle being set or calibrated as a function of the ascertained friction coefficient. It is provided that the ascertained friction coefficient is transmitted to a central database, and that the database provides the ascertained friction coefficient to the other motor vehicles.

Method and device for operating a driver assistance system, and driver assistance system

A method for operating a driver assistance system of a motor vehicle, which includes multiple wheels in contact with a roadway, the driver assistance system including at least one unit which includes a friction coefficient model and at least one sensor, which provides an input signal for the friction coefficient model, a friction coefficient between at least one of the wheels and the roadway being ascertained with the aid of the friction coefficient model, and the driver assistance system being set or calibrated as a function of the ascertained friction coefficient. Friction coefficients are ascertained with the aid of multiple of the units that ascertained friction coefficients are compared to one another, at least one valid friction coefficient of the friction coefficients is determined with the aid of the comparison, and the driver assistance system is set or calibrated as a function of the valid friction coefficient.

A method for operating a motor vehicle that has at least one driving engine which is operatively connected to at least one drive wheel and is controlled as a function of an accelerator-pedal position in order to generate a drive torque, an engine drag-torque control being carried out to avoid skidding of the drive wheel when the accelerator pedal is moved in the direction of a neutral position. It is provided that a maximum permissible engine drag torque is specified to the engine drag-torque control as a function of a currently effective coefficient of friction of the road surface which is determined as a function of a present position of the motor vehicle.

Method and device for operating a motor vehicle

A method for ascertaining a minimum value for the friction coefficient of a road segment, in which at least one movement variable of a second vehicle, which characterizes the vehicle movement, is ascertained with the aid of a surroundings sensor system contained in a first vehicle; a minimum value for the friction coefficient of the road segment traveled by the second vehicle is ascertained on the basis of the at least one movement variable of the second vehicle; the spatial position of the first vehicle is ascertained; the relative position of the second vehicle with respect to the first vehicle is ascertained with the aid of the surroundings sensor system; the spatial position of the second vehicle is ascertained with the aid of the spatial position and the relative position of the first vehicle; the spatial position of the second vehicle and the minimum value are stored in a database.

Method and device for ascertaining a minimum value for the friction coefficient of a road segment

A method for providing swerve assistance for a motor vehicle, in which a threatening or imminent collision of the motor vehicle is detected, the driver is notified to steer the vehicle onto a collision-avoiding swerve trajectory, it is detected whether the driver heeds the warning and initiates a swerve maneuver, and if the driver initiates a swerve maneuver, a driver-independent implementation of a steering or braking intervention assisting in the steering onto the swerve trajectory takes place.

Method and device for swerve assistance for a motor vehicle

The invention relates to a method for preventing tip-over of a motor vehicle in the lateral direction,

Method and apparatus for eliminating a motor vehicle tip-over risk

A vehicle dynamics control system for a motor vehicle having an active normal force adjustment system with which the normal force acting on a wheel may be adjusted is described. For coordinating the vehicle dynamics control system with the active normal force adjustment system, information about a change in the normal force is to be supplied to a control unit of the vehicle dynamics control system and may be taken into account in the vehicle dynamic control.

Method for coordinating a vehicle dynamics control system with an active normal force adjustment system

A vehicle stabilizing system, for motor vehicles in particular, includes a control unit in which a stabilization control algorithm is stored, a sensor system for detecting present actual values of vehicle state variables, and at least one actuator for implementing a stabilizing intervention when an unstable situation is detected. In order to be able to adapt the vehicle stabilizing system to different types of surfaces, a device is provided which supplies the control unit with information concerning the nature of the surface and at least one controller variable of the stabilization control algorithm is changed as a function of the supplied surface information.

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Marbach a.N., Germany

Martin Kieren