Lucas Industries Public Limited Company

Lucas Varity Gmbh

Kelsey-Hayes Company

Lucas Automotive Gmbh

Hubert E Schmitt

Josef Knechtges

Volker Braschel

Thomas Bach

Dieter Roller

Dieter Voges

Stefan Helbing

Wolfgang Kampfmann

Anton Dehn

Wolfgang Kampemann

An electronically controllable braking system includes a hydraulic brake-pressure generator which generates the brake pressures for the wheel brakes. In the hydraulic connection to the brake-pressure generator, a valve arrangement has been assigned to each wheel brake in order to adjust the brake pressures demanded for the wheel brakes in the multiplex mode, for the purpose of operating the braking system. A method has the following steps: establishing for which of the wheel brakes the adjusting of the brake pressure demanded for it has priority in a current multiplex cycle; generating the brake pressure demanded for the wheel brake that has been set to priority; opening the valve arrangement that has been assigned to the wheel brake that has been set to priority; and closing the valve arrangements that have been assigned to the wheel brakes that have not been set to priority.

Method for operating an electronically controllable brake system

A method, a device and a computer program product, by means of which sensor values of redundant sensors in vehicles can be compared with each other to carry out a plausibility check, the measured values of said sensors not being synchronized with each other, are described. On the basis of a first measured value in time, and using the physical properties of the vehicle, a plausibility window, in which a second, subsequent measured value of a different sensor must be to count as plausible, is formed. The determined plausibility of the measured values is indicated by means of a plausibility signal.

Method and device for checking the plausibility of measured values in a motor vehicle environment

The invention concerns a method and a system for identifying tires of a vehicle, tire pressures of the tires of the vehicle being measured and analysed for the driving-dynamic states of the vehicle with the use of parameters which indicate the driving-dynamic states. Individual tires of the vehicle are unambiguously identified on the basis of the analysis of the measured tire pressures or their variations.

Method and system for identifying a tyre of a vehicle

A method and a system for recongnizing both a driving-dynamic state of a vehicle and a surface quality of the carriageway of which the vehicle is moving. The pressures of the tires of the vehicle are measured and evaluated so that conclusions can be draw on both current driving-dynamic states and existing surface qualities of the carriageway.

Method and system for recognizing driving-dynamic states of a vehicle

A rear brake proportioning system for a vehicle which is enabled upon the rear wheel speed exceeding a wheel speed threshold and activated upon rear wheel slip exceeding a slip threshold.

Electronic rear brake proportioning system

An antilock system for a motor vehicle braking system which includes a master cylinder which is connected with a brake fluid reservoir and which can be activated by a brake pedal in order to deliver brake fluid through a connecting line into at least one wheel brake cylinder. The system also includes an electromagnetic valve is arranged in the connecting line between the master cylinder and the wheel brake cylinder in order to establish or to interrupt the connection by an electronic control unit. The system further includes a fluid pump arranged in parallel to the electronic valve in order to remove brake fluid from the wheel brake cylinder, with the fluid pump being operable to deliver fluid in one direction and being shut off to block fluid flow in the other direction.

Apparatus and method of operation for a vehicle anti-lock brake system

A vehicular anti-lock braking system includes a source of pressurized brake fluid connected to a pair of diagonally opposed wheel brakes. First and second normally open isolation valves are connected between the source of pressurized brake fluid and the wheel brakes so that fluid reaches one of the wheel brakes after passing through only one of the isolation valves and reaches the other of the wheel brakes after passing through both of the isolation valves. A normally closed dump valve is connected between the source of pressurized fluid and one of the isolation valves so that fluid is selectively routed from both of the wheel brakes and passed through the dump valve to relief fluid pressure at the wheel brakes.

Pumpless anti-lock braking system using six solenoid actuated valves

Anti-slip control

An anti-lock braking method to retard the wheels of a vehicle provides that

Anti-lock braking method to retard the wheels of a vehicle

Method of regulating the braking pressure in an antilock vehicle brake

A method of controlling the brake pressure in an antilock (ABS) vehicle brake system provides for adapting the wheel at which the brake is applied to the optimum course of the coefficient of friction/slip curve by determining the rotational retardation of the braked wheel, upon initiation of a braking action, after given time intervals each and comparing it with the rotational retardation of the preceding time interval. Moreover, the brake pressure is varied in response to the result of the comparison. The renewed acceleration of the retarded wheel also is monitored accordingly so as to effect further lowering of the brake pressure if the renewed acceleration or the gain in acceleration is too small.

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Ochtendung, Germany

Hubert E Schmitt