Mercedes-benz Aktiengesellschaft

Daimler Chrysler Ag

Robert Boschgmbh

Bayerische Motoren Werke Aktiengesellschaft

Armin Mueller

Rainer Freitag

Reinhold Schoeb

Manfred H Burckhardt

Richard Zimmer

Harry Troester

Gerd Eilert

Sinan Kazan

Rainer Spiecker

Johannes Schmitt

Wilfried Huber

Alfred Straub

Thomas Roehrig-Gericke

Dirk Saewe

A method and apparatus for braking a vehicle having a vehicle brake system with a brake control device, and an engine whose torque is transmitted via a transmission to driven wheels. When there is a malfunction of the braking system and a demand for a braking operation, the transmission ratio is increased by a transmission control unit, which activates the transmission, to produce increased braking torque at the driven wheels.

Automotive braking method and devices for carrying out said method

A control system for a vehicle has a detection device for generating signals which describe the operating and vehicle state. The latter signals are supplied to a regulating and control unit which generates actuating signals for switching on and off a vehicle component that influences a brake servo device for automatically producing braking force if the accelerator pedal is not actuated by the driver. This &ldquo;acceleration&mdash;automatic braking&rdquo; mode is triggered if the brake pedal has been actuated in a prescribed manner within a defined period of time.

Control system for a vehicle

In order to avoid faults as a result of different diameters of tires, under prescribed conditions a correction of one wheel speed with respect to the other on each side of the vehicle is performed. The conditions are based on a comparison of the throttle valve angle to the zero torque angle, and a comparison of the speed of the driven wheel to the speed of the non-driven wheel.

Traction control system with wheel speed correction to compensate for

For the determination of the friction/slip characteristics of the tires of a road vehicle which is equipped with an antilock system designed for an individual wheel control, in an initial phase of a controlled braking, only the wheel brake of an individual vehicle wheel is acted upon by brake pressure and the latter is dimensioned so that the result is the initial retardation in accordance with the driver's wish. During this initial test phase of the braking, the absolute brake slip .lambda..sub.B as well as the friction utilization .mu..sub.B linked therewith is continuously determined as soon as, as a result of just the braking of the test wheel, the vehicle retardation z increases no further and/or the braked vehicle wheel is more strongly retarded than corresponds to a predetermined threshold value, the test braking is interrupted and the braking is continued by pressure action on the further vehicle wheels; corresponding test braking phases are carried out in cyclic sequence for all guidance wheels.

Process and system for determination of friction/slip characteristics of

Process for determination of friction/slip characteristics of the tires

Growing community of inventors

Backnang, Germany

Armin Mueller