Abstract: The present invention relates to a method for regulating a predetermined modifiable brake pressure in the wheel brakes of a brake system, wherein input quantities determining the brake pressure in the individual wheel brakes are evaluated and correcting variables of hydraulic valves are defined in a control and/or data processing system. To obviate the need for additional pressure sensors which register the pressure in the wheel brakes, it is arranged for by the invention that a characteristic curve is stored in the control or data processing system, said curve correlating the valve characteristics of the hydraulic valve with a pressure difference of the hydraulic valve, and the correcting variable of the hydraulic valve is defined according to the characteristic curve.

Abstract: In a method for improving the operation of a hydraulic vehicle brake system with an active hydraulic brake boost, wherein a pressure fluid volume flow between a master brake cylinder and the wheel brakes of the vehicle is controlled by means of an analog or analogized separating valve, and wherein a hydraulic pressure is determined in the master brake cylinder, an increase of the hydraulic pressure in the master brake cylinder is monitored and/or controlled on the basis of the hydraulic pressure determined in the master brake cylinder in a transition of the separating valve from a closed switch position to an open switch position.

Abstract: The present invention relates to a method for controlling the driving performance of a vehicle in which the tire pressure of the wheels prevailing in the individual tires or quantities is monitored by actuators of an actively controllable chassis system with respect to errors. To enhance the stability of the driving performance of a vehicle by means of EBS control units such as ABS, TCS, ESP, ARP, etc. in order to thereby prevent a driving performance of the vehicle that is unstable under driving dynamics aspects or counteract an unstable driving performance, the invention provides that in accordance with the air pressure of the tires on the individual position thereof or the magnitude of error of the actuator on the individual position, a quantity influencing the transverse dynamics of the vehicle is modified when an unstable driving condition is determined or predicted.

Abstract: In a method for operating a hydraulic vehicle brake system, it is arranged for that hydraulic pressure is metered directly into a master brake cylinder by way of a preceding hydraulic booster, and in which the hydraulic pressure is controlled in accordance with a quantity representative of the driver's braking request because the pressure in the preceding hydraulic booster is controlled by actuation of at least two analog or analogized valves.

Abstract: The present invention relates to a brake holder of a floating-caliper disc brake for motor vehicles at which brake pads arranged on either side of an associated brake disc are displaceably mounted. To ensure ease of displaceability a brake pad guide spring is provided that extends between the brake holder and the brake pads. For ease of mountability of both the brake pads and the brake pad guide spring, it is arranged for that the brake pad guide spring is mountable on the brake holder in a generally radial direction and is locked at the brake holder in both radial and axial directions by means of at least one fixing clamp, and at least one spring arm is designed at the brake pad guide spring and fixes at least one brake pad under spring bias in position on the brake holder in a clearance-free manner. These provisions not only improve the mountability of a brake of this type but also the rattle-free resilient arrangement of the brake pads.

Abstract: The invention relates to a method for improving the control behavior of motor vehicle control systems such as ABS, ESP, etc. comprising electrically driven hydraulic pumps, inlet and outlet valves and low-pressure accumulators, wherein the low-pressure accumulators accommodate, at least in part, pressure fluid that is discharged from wheel brakes in a control operation, wherein the hydraulic pumps are used to return the pressure fluid into a master cylinder, in particular tandem master cylinder, wherein the delivery behavior of the hydraulic pumps is controlled in dependence on pressure values, wherein the actuation of the hydraulic pumps takes place in conformity with demand, i.e.

Abstract: In a method for improving the operation of a hydraulic vehicle brake system with an active hydraulic brake boost, wherein a pressure fluid volume flow between a master brake cylinder and the wheel brakes of the vehicle is controlled by means of an analog or analogized separating valve, and wherein a hydraulic pressure is determined in the master brake cylinder, an increase of the hydraulic pressure in the master brake cylinder is monitored and/or controlled on the basis of the hydraulic pressure determined in the master brake cylinder in a transition of the separating valve from a closed switch position to an open switch position.

Abstract: In a method for determining or calibrating the brake control characteristic of a vacuum brake booster of a vehicle brake system, the pressure in the working chamber or the pressure difference between the working chamber and the vacuum chamber of the vacuum brake booster is determined, and either the brake control characteristic is determined on the basis of the determined pressure or pressure difference of the vacuum brake booster, or the stored brake control characteristic is changed according to the determined pressure or pressure difference.

Abstract: The invention relates to a method for controlling the driving stability of a vehicle, wherein it is determined when a stable or unstable driving behavior prevails whether a tendency to a subsequent unstable driving behavior exists as a result of a highly dynamic inward swerve. In order to provide a method for controlling driving stability, which allows a reaction to predicted unstable driving situations by means of an intervention diminishing or avoiding critical driving situations, the steering force and/or the steering angle of a steering handle is corrected in this case in such a manner that when the steering handle is operated, the driver is assisted in the direction of an understeering vehicle course.

Abstract: The present invention relates to a method and a device for controlling a vehicle brake system with active hydraulic brake force boosting. In this method, an active pressure-increasing unit and/or a pressure modulation unit is actuated according to a comparison between a nominal pressure or a nominal vehicle speed or quantities derived therefrom, in particular a nominal vehicle acceleration, and an actual pressure or an actual vehicle speed or quantities derived therefrom, in particular an actual vehicle acceleration.

Abstract: The present invention relates to a method for regulating a predetermined modifiable brake pressure in the wheel brakes of a brake system, wherein input quantities determining the brake pressure in the individual wheel brakes are evaluated and correcting variables of hydraulic valves are defined in a control and/or data processing system. To obviate the need for additional pressure sensors which register the pressure in the wheel brakes, it is arranged for by the invention that a characteristic curve is stored in the control or data processing system, said curve correlating the valve characteristics of the hydraulic valve with a pressure difference of the hydraulic valve, and the correcting variable of the hydraulic valve is defined according to the characteristic curve.

Abstract: A method of improving the control performance of a traction slip control system so that faulty control activations of the TCS control system are prevented in critical situations such as driving downhill. The invention concerns a method wherein a vehicle reference speed and a vehicle deceleration signal are derived from the rotational behavior of the vehicle wheels and wherein a vehicle deceleration signal is obtained by way of a longitudinal deceleration sensor. The course of the two deceleration signals is compared and analyzed for detecting stable or unstable wheel rotational behavior. Preferably a difference signal is formed indicating the difference between the two deceleration signals. The difference signal is evaluated by a multistage filter arrangement.

Abstract: The present invention relates to a method for modifying a driving stability control of a vehicle wherein the input variables essentially composed of the predetermined steering angle (?) and the driving speed (v) are converted into a nominal value of the yaw velocity ({dot over (?)}nominal) on the basis of a vehicle model defined by running characteristics. The nominal value is compared with a measured actual value of the yaw velocity ({dot over (?)}measured), and an additional yaw torque (MG) is calculated in an ESP controller according to the result of the comparison and used to define an ESP intervention which produces an additional yaw torque by way of pressure quantities applied to the wheel brakes of the vehicle.

Abstract: The invention relates to a method for determining a fault in or failure of a hydraulic pressure sensor or hydraulic brake circuit in a hydraulic vehicle brake system with a vacuum brake booster, with a fault in or failure of a hydraulic pressure sensor or hydraulic brake circuit being determined on the basis of a comparison between a hydraulic pressure or variables derived therefrom and the vacuum situation or point of maximum boosting of the vacuum brake booster or variables derived therefrom.

Abstract: A method for testing a current regulator of an electronically controllable valve in a hydraulic vehicle brake system, the current regulator is tested by way of actuation with a testing current which is sufficiently small such that essentially there is no valve movement of the electronically controllable valve, with the result that no substantial hydraulic effect is produced on the vehicle brake system.

Abstract: The present invention relates to a method of actuating a braking device for motor vehicles with electrically controlled hydraulic valves and a hydraulic pump, in which one or more existing valve coils necessary for hydraulic controlling functions are actuated for the purpose of electrically heating one or more support members accommodating these coils, for longer periods of time than is necessary for the control function and/or in periods in which it is not necessary for the control function, wherein at least one first heating period is carried out, and with the heating period comprising a first heating pulse followed by a heating pause and at least one further heating pulse.

Abstract: A detection device for detecting braking of a vehicle during cornering on a road surface where the coefficient of friction of the road surface on a wheel on the outside of a curve is lower than on a wheel on the inside of the curve includes a comparison device for comparing the brake force or the brake force reduction of at least one wheel on the outside of a curve with the brake force or the brake force reduction of at least one wheel on the inside of the curve, and a device for generating a detection signal or initiating appropriate measures when the brake force of at least one wheel on the outside of a curve is lower or reduced to a greater degree than the brake force of at least one wheel on the inside of the curve. A device for influencing yaw torques has a so-called detection device and a reduction device which reduces the brake force in a brake of a wheel on the inside of a curve.

Abstract: A method is provided for determining correction values for the wheel speeds of a vehicle, comprising the step of determining the speeds of the vehicle wheels during travel, with the speeds of the vehicle wheels being evaluated, in groups, for at least one vehicle axle and at least one vehicle side values of correction for the individual vehicle wheels being determined in accordance with the evaluation results. Moreover, a device is provided for determining corection values, comprising wheel sensors for determining the speeds of wheels of the vehicle during travel, and a determining means evaluating the speeds of the vehicle wheels, in groups, for at least one vehicle axle and at least one vehicle side, and determining correction values for the individual vehicle wheels in accordance with the results of evaluation.

Abstract: The present invention relates to a method of improving the control performance of a traction slip control system so that faulty control activations of the TCS control system are prevented in critical situations such as driving downhill. The invention concerns a method wherein a vehicle reference speed (VREF) and a vehicle deceleration signal (bVEH) are derived from the rotational behavior of the vehicle wheels and wherein a vehicle deceleration signal (bLS) is obtained by means of a longitudinal deceleration sensor. The course of the two deceleration signals (bVEH, bLS) is compared and analyzed for detecting stable or unstable wheel rotational behavior. Preferably a difference signal is formed indicating the difference between the two deceleration signals. The difference signal is evaluated by means of a multistage filter arrangement.

Abstract: A method for controlling an anti-lock braking system, intended for motor vehicles having all-wheel drive, electric signals representative of the rotational behavior of the vehicle wheels are produced and logically combined. When a locking tendency occurs, the braking pressure is controlled, and the instantaneous wheel slip, the wheel acceleration, and the wheel deceleration are evaluated as control criteria, and wherein the individual wheel speed is compared to a vehicle reference speed which is used as a reference quantity for controlling the braking pressure.