Continental Teves, Ag and Company Ohg

J&uuml;rgen Woywod

Ralph Gronau

Dieter Burkhard

Georg Roll

Dirk Waldbauer

Gunther Buschmann

Lothar Kienle

Robert Schmidt

Andreas Kohl

Tobias Scheller

Thomas Kranz

Hans Georg Ihrig

Wolfgang Kling

Hans-Georg Ihrig

Ronald Lehmer

Manfred Dornseiff

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.

Method and device for detecting a braking situation

A method of brake pressure adjustment in a vehicle brake system equipped with an electric hydraulic pump comprises the following steps: detecting a prevailing brake pressure or determining a nominal pressure, and actuating the pump by degrees according to the detected brake pressure or the nominal pressure. In a method of opening an inlet valve of a hydraulic vehicle brake system, a pressure rise on the inlet side of the inlet valve is generated when the difference between the outlet-side and the inlet-side pressure on the inlet valve exceeds a positive threshold value.

Method and device for adjusting brake pressure and for opening an inlet valve

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. In addition, a condition variable which is correlated to the centrifugal acceleration acting on the center of gravity is detected, and the roll angle of the vehicle is calculated from the difference between the detected component of the transverse acceleration and the determined centrifugal acceleration, the said difference being weighted with a factor.

Method and device for detecting the overturning hazard of a motor vehicle

Disclosed is a method for identifying a critical braking operation of a two-track vehicle during cornering, which features the steps of detecting the running behaviour of a left-hand side wheel and of a right-hand side wheel, of comparing the running behaviour and/or of evaluating the time variation of at least one left-hand side wheel or right-hand side wheel, and of identifying a critical braking operation on the basis of the result of the comparison and/or of the result of the evaluation. As a reaction, there may ensue the reduction of the braking pressure of a wheel on the inside of the corner in response to identification. A device for identifying a critical braking operation of a two-track vehicle during cornering includes a detecting device ( ) for detecting the running behaviour of a left-hand side wheel and of a right-hand side wheel ( ), a first comparing device ( ) for comparing the running behaviour and/or an evaluating device ( ) for evaluating the time variation of at least one left-hand side wheel or one right-hand side wheel, and an identifying device ( ) for identifying a critical braking operation on the basis of the output of the comparing device and/or of the output of the evaluating device. Moreover, a modifying device ( ) can be provided for reducing the braking pressure of a wheel on the inside of the corner in response to identification.

Method and device for detecting unstable braking and controlling braking pressure

To improve the control behavior of an automotive vehicle control system, such as an anti-lock system (ABS), a driving stability control system (ESP, ASMS, DDC), etc., in a brake system which includes a master cylinder, inlet and outlet valves for pressure modulation, a low-pressure accumulator, and a hydraulic pump for returning the pressure fluid discharged, when a wheel becomes unstable and upon commencement of the ABS control, that branch of the control system to which the unstable wheel is connected is temporarily uncoupled from the master cylinder pressure (p ) or initial pressure by closing the pressure fluid conduit in the direction from the wheel brakes to-the master cylinder, and a relatively quick rise of the braking pressure and a quick approach of the wheel braking pressure to the master cylinder pressure (p ) and, thus, the wheel lock pressure level is caused by returning pressure fluid from the low-pressure accumulator into this branch. A special valve which can provide a connection between the master cylinder and the suction side of the hydraulic pump is switched over to open-passage-only after the low-pressure accumulator has been emptied at least in part, or as required.

Method for improving the control performance of a motor vehicle control system

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.

Method and device for limiting transversal acceleration in a motor vehicle

A device for controlling the driving stability of a vehicle includes a detection device for detecting an operating condition of the vehicle, a device for building up braking pressure for at least one of the wheels, and an influencing device which influences the braking pressure of one or more wheels in dependence on the detected operating condition of the vehicle. The above device also comprises a starting device which activates the device for building up braking pressure in idle mode before the commencement of an operating condition which initiates influencing of the braking pressure.

Method and device for regulating the driving stability of a vehicle

In a method for the adaptive control of the hydraulic pump of a brake system containing low pressure accumulator (NDS ) 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 (p ) 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 (NDS ). 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 (NDS ).

Method for the control of a hydraulic pump in a regulated braking system

A system including a method for improving the driving performance of a vehicle when braking during cornering comprises the following steps: detecting cornering and the direction of cornering, determining the rolling characteristics of individual wheels, if necessary, influencing the braking pressure of the brake on one wheel or on several wheels according to the rolling characteristics of these wheels, checking the driving condition of the vehicle with respect to whether instability prevails, and modifying the braking pressure of at least one brake of a wheel when an instability is detected during a cornering maneuver extending for a time period that reaches a threshold time period. A device for improving the driving performance of a vehicle while braking during cornering comprises a detection device for detecting a cornering maneuver and the direction of cornering, a determining device for determining the rolling characteristics of individual wheels, an influencing device which optionally influences the braking pressure of the brake on one wheel, a checking device for checking the driving condition of the vehicle as to whether instability prevails, and a modifying device for modifying the braking pressure of at least one brake of a wheel when an instability is detected during cornering extending for a time period which reaches a threshold time period.

Method and device for improving the handling characteristics of a vehicle while braking during cornering

Method of Determining a Vehicle Deceleration or Acceleration A method which permits determining a vehicle deceleration or acceleration from the signals of the wheel sensors. The method includes two different types of calculation which take into consideration that the vehicle is temporarily in a slip control operation during which the single wheel speeds per se are not representative of the vehicle speed. If some of the wheels are not subjected to slip control, these wheels may be taken into account for determining the vehicle deceleration or acceleration. If, however, all the wheels undergo a slip control operation, a maximum amount gradient is respectively determined from the speed variation of non-driven wheels which comes closest to the vehicle deceleration.

Growing community of inventors

Mörfelden, Germany

Jürgen Woywod

Growing community of inventors

Mörfelden, Germany

J&uuml;rgen Woywod

Jürgen Woywod