Itt Automotive Europe Gmbh

Itt Manufacturing Enterprises, Inc.

Johannes Graber

Stefan A Drumm

Alfred Eckert

Dieter Kircher

Peter Wanke

Benno Lammen

Thomas Geiger

Karl-Friedrick Worsdorfer

Jochen Burgdorf

Thomas Berthold

Thomas Kranz

Thomas Krull

Paul Schwarzer

Nino Romano

C Jan Neederkorn

Process for the temperature-dependant actuation of an additional

Process of operating an anti-lock motor vehicle brake system

Method of operating an anti-lock automotive vehicle brake system

Apparatus for improving the driving behavior of a vehicle is provided. The vehicle has front and rear axles, each having a plurality of wheels. Each wheel-has a brake. Sensor are provided for measuring the rotational speed of each wheel, the vehicle yaw rate and the vehicle lateral acceleration. An anti-lock braking system provides first preset pressure values for controlling each brake, to prevent the wheels from locking during braking. A traction slip control system provides second preset pressure values for controlling each brake, to prevent the wheels from slipping during acceleration. A brake effort proportioning system provides third preset pressure values for distributing braking pressure between the wheels of the front axle and the wheels of the rear axle. A yawing moment controller provides fourth preset pressure values used to control each brake during cornering, to avoid application to the vehicle of an unbalanced moment which would cause the vehicle to understeer or oversteer. The antilock braking system, traction slip control system, brake effort proportioning means and yawing moment control system all operate independently of one another. A prioritizing mechanism applies criteria to determine a desired brake pressure that is applied to each wheel, based on the outputs of the antilack braking, traction slip control, brake effort proportioning, and yawing moment control systems.

System for driving stability control

Brake unit for motor vehicles with electric drive

A system for improving the driving stability of a vehicle during travel through a curve is provided. The system includes a sensor for measuring the actual yaw rate of the vehicle, and a facility for calculating a desired yaw rate. The difference between the desired yaw rate and the measured yaw rate is determined. A situation recognition facility determines whether the vehicle is travelling in a curve, and whether the vehicle is travelling in reverse. A logic initiates a corrective yawing moment if the difference exceeds a predetermined threshold value and the vehicle is not traveling in reverse.

System for driving stability control during travel through a curve

Apparatus for improving the driving behavior of a vehicle is provided. The vehicle has front and rear axles, each having a plurality of wheels. Each wheel has a brake. Sensor are provided for measuring the rotational speed of each wheel, the vehicle yaw rate and the vehicle lateral acceleration. An anti-lock braking system provides first preset pressure values for controlling each brake, to prevent the wheels from locking during braking. A traction slip control system provides second preset pressure values for controlling each brake, to prevent the wheels from slipping during acceleration. A brake effort proportioning system provides third preset pressure values for distributing braking pressure between the wheels of the front axle and the wheels of the rear axle. A yawing moment controller provides fourth preset pressure values used to control each brake during cornering, to avoid application to the vehicle of an unbalanced moment which would cause the vehicle to understeer or oversteer. The antilock braking system, traction slip control system, brake effort proportioning means and yawing moment control system all operate independently of one another. A prioritizing mechanism applies criteria to determine a desired brake pressure that is applied to each wheel, based on the outputs of the antilock braking, traction slip control, brake effort proportioning, and yawing moment control systems.

System for integrated driving stability control

The present invention pertains to a control circuit for controlling the yawing moment of a vehicle. It is desirable in some special cases to limit the control behavior of this control circuit. The current estimation of the coefficient of friction is used for this purpose according to the present invention; this estimation leads to the determination of a maximum coefficient of friction, which is used to determine a maximum allowable yaw acceleration. The additional torque used to control the vehicle stability is influenced based on the yaw rate.

Driving stability controller with coefficient of friction dependent

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Eschborn, Germany

Johannes Graber