Abstract: Disclosed is a method and brake system for modulating brake pressures in a motorcycle brake system with anti-lock function and integral braking function. Inlet and outlet valves (9, 10) are provided in each case for brake slip control in a front-wheel brake circuit (1) and a rear-wheel brake circuit (2). Active pressure buildup in a brake circuit other than the brake circuit actuated by the motorcyclist is performed by the integral braking function using a pump (15) and at least one separating and change-over valve (11, 18) in at least one of the brake circuits (1, 2). In the brake circuit (1, 2) being initiated by the integral function, brake pressure modulation is controlled or regulated using the change-over valve (18) and/or the separating valve (11) during brake slip control.

Abstract: The present invention relates to a method for improving the control behavior of a controlled automotive vehicle system, in particular an anti-lock brake system (ABS), a driving stability control system (ESP), or another brake system extended by other functionalities, wherein evaluated wheel dynamics data (dyn) and evaluated wheel slip data (slip) are taken into account as a criterion for the initiation of a control intervention for each individual wheel, and the sum thereof is compared to a control threshold (?). For a better weighting of wheel dynamics and slip, the invention discloses determining evaluation parameters (?, ?) that can be modified in response to driving conditions and taking them as a reference in the evaluation of the wheel dynamics data (dyn) and in the evaluation of the wheel slip data (slip).

Abstract: The described method and computer program product for calibrating one or more electrically actuated hydraulic valves of analog operation render it possible to facilitate the provision of precise actuation characteristic curves in a controlled motor vehicle brake system. To achieve this aim, at least one or respectively one characteristic curve is initially predetermined during the operation of a brake device, and the predetermined actuation characteristic curve is corrected using a learning method during driving of the vehicle.

Abstract: The invention relates to a method for improving the handling characteristic of a vehicle during partially braked driving. The invention is characterized by a driving stability regulation device for correcting or regulating deviations from a desired lane, said device being configured in such a way that the start and the conclusion of an activated regulation situation is carried out depending upon conditions which are detected in accordance with straight-ahead driving conditions and cornering.

Abstract: The present invention relates to a method for improving an anti-lock control system, in particular for improving driving stability during braking on laterally different coefficients of friction. According to the method, a desired yaw rate is determined using at least one steering angle signal of a steering angle sensor and an actual yaw rate is determined using at least one yaw rate sensor, and the instability is evaluated using a parameter that serves for a qualitative and quantitative judgment of a deviation between the actual yaw rate and the desired yaw rate. Both yaw rate deviation and the time derivative of the yaw rate deviation are used to determine the parameter.

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: To improve the control behavior of a brake system with anti-lock control (ABS) on the occurrence of road irregularities, a brief braking pressure reduction phase with a major braking pressure reduction on a wheel, followed by a high re-acceleration of the wheel, is interpreted as a road irregularity if the quotient of the duration of the braking pressure reduction and of the total duration of the pressure reduction phase multiplied by the re-acceleration of the wheel or the maximum value of the re-acceleration or if the acceleration variation or the maximum value of the acceleration variation exceeds predetermined limit values, and a braking pressure rise that is increased compared to the standard ABS control is caused as a result of detection of the road irregularity.

Abstract: The present invention relates to a method for improving the control behavior of a controlled automotive vehicle system, in particular an anti-lock brake system (ABS), a driving stability control system (ESP), or another brake system extended by other functionalities, wherein evaluated wheel dynamics data (dyn) and evaluated wheel slip data (slip) are taken into account as a criterion for the initiation of a control intervention for each individual wheel, and the sum thereof is compared to a control threshold (&psgr;).

Abstract: The present invention relates to a method for improving an anti-lock control system, in particular for improving driving stability during braking on laterally different coefficients of friction. According to the method, a desired yaw rate is determined using at least one steering angle signal of a steering angle sensor and an actual yaw rate is determined using at least one yaw rate sensor, and the instability is evaluated using a parameter that serves for a qualitative and quantitative judgment of a deviation between the actual yaw rate and the desired yaw rate. Both yaw rate deviation and the time derivative of the yaw rate deviation are used to determine the parameter.

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.

Abstract: To improve the control behavior of a brake system with anti-lock control (ABS) on the occurrence of road irregularities, a brief braking pressure reduction phase (T) with a major braking pressure reduction (treduction) on a wheel, followed by a high re-acceleration (Aacc, Accmax, Acc′, Accmax′) of the wheel, is interpreted as a road irregularity if the quotient of the duration of the braking pressure reduction (treduction) and of the total duration of the pressure reduction phase (T) multiplied by the re-acceleration (Acc) of the wheel or the maximum value of the re-acceleration (Accmax) or if the acceleration variation (Acc′) or the maximum value of the acceleration variation (Accmax′) exceeds predetermined limit values (TH), and a braking pressure rise that is increased compared to the standard ABS control is caused as a result of detection of the road irregularity.

Abstract: In 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 (vR) is compared to a vehicle reference speed (vREF) which is used as a reference quantity for controlling the braking pressure.

Abstract: The present invention relates to a method of detecting the roll angle of a cornering vehicle which comprises at least one axle and at least two wheels, the vehicle being equipped with a transverse acceleration sensor means which senses the transverse acceleration that acts on the center of gravity of the automotive vehicle generally in the horizontal plane of the vehicle. To provide a method which does not require an additional sensor means and is virtually independent of given vehicle characteristics or dimensions, the component of the transverse acceleration which essentially acts in the horizontal plane of the vehicle is detected by the transverse acceleration sensor means during cornering.

Abstract: A method for limiting the transverse acceleration of a traveling vehicle consisting of the steps: detection of a driving condition with a critical transverse acceleration, influencing the braking pressure on at least one wheel, and/or influencing the driving torque when the driving condition having a critical transverse acceleration has been detected. A device for limiting the transverse acceleration of a traveling vehicle has a detection device for detecting a driving condition with a critical transverse acceleration, and an influencing device for influencing the braking pressure on at least one wheel and/or for influencing the driving torque when the detection device has detected a driving condition with a critical transverse acceleration.

Abstract: In a method for the adaptive control of the hydraulic pump of a brake system containing low pressure accumulator (NDS1,2) which take up the pressure fluid discharged in the case of control from the wheel brakes and which are evacuated by the hydraulic pump (HP), first the brake pressure pattern (pR) is determined for each individual wheel with the aid of a wheel pressure model. Then a volume model (VM1,2) is formed on the basis of the wheel pressure model for each individual brake circuit, which volume model indicates, by way of approximation, the filling level of the low pressure accumulators (NDS1,2). The maximum filling level (MaxV) and the control frequency or the time interval (T) between two successive brake pressure decreasing phases (Ph2) are determined. The delivery capacity of the hydraulic pump (HP) is so dimensioned that the time interval (T) between two successive brake pressure decreasing phases (Ph2) is just adequate for completely evacuating the low pressure accumulators (NDS1,2).

Abstract: The speed variation of the driven wheels is analyzed in a method of recognizing critical drive train oscillations which require countermeasures during an (ABS) controlled brake maneuver. The occurrence of oscillations having a frequency typical of drive train oscillations is established. When oscillations with this frequency occur, the duration of the oscillating process is established on each individual wheel, or the number of the successive oscillations or semi-wave oscillations is counted. When a predetermined counter reading is reached, an oscillation recognition is indicated if, at that time, the vehicle acceleration is above a predetermined limit value and if oscillation recognition has not yet been triggered on the other driven wheel. To dampen the oscillations, switch-over to a special control is effected for a defined interval. The commencement of the special control prevents braking pressure reduction, the pressure is maintained constant, or at most a delayed pressure increase is allowed.

Abstract: A method of monitoring a brake system which is equipped with anti-lock control (ABS) and a system for electronic control of brake force distribution (EBV). The system includes two brake circuits in a black/white brake circuit split-up, the EBV function or control is principally released only when the vehicle deceleration exceeds a predetermined limit value (GWN). To identify a front-axle brake circuit failure, acceleration criteria, i.e., criteria responsive to the acceleration behavior of the vehicle wheels, are predetermined and monitored. Further, slip range monitoring in conjunction with acceleration range monitoring is performed.

Abstract: To determine the transverse acceleration of a vehicle, in particular as an input quantity for an electronic vehicle control system such as ABS, TCS, EBV, etc., the output signals of wheel sensors representative of the rotational behavior of the individual vehicle wheels are evaluated. The correction factors representing the differences of the tire tread circumferences of the individual wheels are determined. A short-time correction factor and a long-time correction factor KZ and LZ are produced in each case for the non-driven vehicle wheels. A difference between the long-time correction factor and the short-time correction factor of the respective wheel is determined and evaluated in a filtering and adapting circuit. The quotient KZ/LZ of the short-time correction factor and the long-time correction factor of the respective wheel is calculated, and the difference is produced between the quotients of the left and right non-driven ##EQU1## wheels. The transverse acceleration of the vehicle Q.sub.

Abstract: The present invention discloses a method of determining correction factors by which the different tire-tread circumferences are ascertained and compensated, wherein a short-time correction factor (KZ.sub.Rn) and a long-time correction factor (LZ.sub.RN) is developed for each wheel, the deviation (D.sub.Rn) of the short-time correction factor from the long-time correction factor is determined and the deviation is weighted by way of a band-pass filter (3), wherein subsequently a long-time average value (LM.sub.Rn) of the weighted deviation (D'Rn) is developed, and a partial value (TW.sub.Rn) of the long-time average value (LM.sub.Rn) is assessed, as a function of the driving condition, for the correction and adaption of the long-time correction factor (LZ.sub.Rn).

Abstract: A circuit arrangement for a brake system with electronic brake force distribution control includes circuits which determine the deceleration of the rear wheels and the deceleration of a vehicle or a corresponding reference quantity. The discrepancy of the filtered rear-wheel deceleration from the vehicle deceleration is evaluated for brake force distribution control. To this end, an output signal is produced by way of a differentiator and integrator comparing the rear-wheel deceleration and the vehicle deceleration, and the output signal is evaluated for the control of the braking pressure in the rear-wheel brakes.