Robert Boschgmbh

Zf Lenksysteme Gmbh

Wolfgang Pfeiffer

Werner Harter

Peter Dominke

Chi-Thuan Cao

Herbert Lohner

Klaus-Dieter Leimbach

Peter Blessing

Juergen Schuele

Bernd Mueller

Jens Hafermalz

Werner Mayer

Wilfried Leutner

Helmut Knoedler

Bo Yuan

Jochen Koepernik

Florian Hartwich

Klaus Ries-Mueller

Willi Nagel

Werner Hess

Eberhard Boehl

Martin-Peter Bolz

Peter Ahner

Ralf Angerbauer

Yorck Von Collani

Ngoc-Thach Nguyen

Rainer Gmehlich

Thomas Kottke

Helmut Janetzke

Thorsten Allgeier

Urs Bauer

Thomas Lindenkreuz

Elmar Dilger

Thomas Loeffler

Thomas Sauer

Karsten Graebitz

Rienhard Weiberle

Helmut Knödler

Juergen Schuelle

Klauss-Dieter Leimbach

Matthias Haussmann

A hydraulic brake system has: a force-pressure conversion element, which is in hydraulic connection with at least one wheel brake cylinder of at least one wheel; a volume-adaptation element in hydraulic connection with the at least one wheel brake and the force-pressure conversion element; and as an actuating unit for actuating the force-pressure conversion element, which actuating unit has an input element. The pressure in the at least one wheel brake cylinder is adjusted by operating the volume-adaptation unit and/or the actuating unit. For this purpose an actuating state of the input element is maintained by operating the actuating unit when the volume-adaptation unit is being operated.

Hydraulic brake system and method as well as control device for its operation

Errors which may be detected by an error detection unit may occur during execution of a computer program which runs on a computer system and includes at least one run-time object. In order to handle a detected error particularly flexibly and to keep the computer system available as much as possible, an error handling routine is selected from a pre-selectable set of error handling routines as a function of an identifier assigned to the run-time object and the selected error handling routine is executed.

Method for running a computer program on a computer system

A torque control element for a steering system in a motor vehicle, and such a steering system are provided. The torque control element includes at least two electrical units, each of the electrical units being assigned a separate power supply unit, connected via at least one fuse.

Torque control element for a steering system in a motor vehicle

A method for triggering an electromechanical coupling unit having at least two coupling windings, and a steering system for implementing the method, are provided. The coupling unit selectively closes, and in this manner provides a mechanical coupling, only if both coupling windings are no longer supplied with electrical energy.

Method for triggering a coupling unit

A steer-by-wire steering system has a steering wheel actuator and a braking device that acts on the steering column. The braking device is activated when the vehicle steering wheel is to be blocked or at least sharply braked, such as when the steering stop is reached or a wheel goes over the edge of a curb. The braking device functions like a switchable freewheel.

Clutch for steer-by-wire steering system

A steer-by-wire steering system is proposed, having a steering wheel actuator and a braking device that acts on the steering column (). The braking device is activated when the vehicle steering wheel is to be blocked or at least sharply braked, such as when the steering stop is reached or a wheel goes over the edge of a curb. The braking device functions like a switchable freewheel.

Coupling for a steer-by-wire steering system

A device for controlling a steer-by-wire steering system in a vehicle, in which redundantly generated sensor signals for regulating a steering motor and for a feedback actuator that transfers the restoring torques from the road to the driver via the steering wheel are received by a control device and plausibility checks of the sensor signals are performed therein and in an operatively associated monitoring module. Microcomputer module and monitoring module monitor each other reciprocally. An auxiliary level for the SbW steering system is monitored by the control device which, in the case of error, switches to this auxiliary level or a mechanical auxiliary level. To further increase safety, the steering wheel motor is triggered via control signals for its phase currents and by a steering wheel motor enable signal, and the steering motor is triggered via control signals for its phase currents and via a steering motor enable signal.

Method for controlling a steer-by-wire system

A control unit, for controlling safety-critical applications, includes a microcomputer, a monitoring unit (check unit), and peripheral circuits (input/output), and in which, to improve the reliability of the error detection for such control units, and to expand the detection to additional error types, the monitoring unit includes a first apparatus, arrangement or structure for measuring the quiescent current of the microcomputer; at least one quiescent current handshake line for controlling the measurement of the quiescent current running between the first apparatus, arrangement or structure of the monitoring unit and the microcomputer; the monitoring unit including a second apparatus, arrangement or structure for applying a test data input signal to the microcomputer, for processing the test data input signal, and for comparing the corresponding test data output signal of the microcomputer to the corresponding test data output signal of the monitoring unit; and at least one test data signal transmission line running between the second apparatus, arrangement or structure of the monitoring unit and the microcomputer.

Control unit for controlling safety-critical applications

A method for steering a vehicle and a steering system are provided, in which a variable torque support of the driver's steering wish and intervention in the position of the steered wheels triggered by a driving dynamics regulator are implementable without mutually interfering with one another. In addition, further additional functions, such as the lane guidance system of the vehicle, may be integrated into a steering system easily and either with or without compensation of the steering feel at the steering wheel.

Method for steering a vehicle using a power-assisted steering system

A steer-by-wire steering system comprised of an electronically regulated steering positioner mounted to the steering gear of the front axle or to both front wheels of a vehicle together with an electronic steering regulator and a feedback actuator. A sensor senses the driver's selected direction from the steering wheel. Road feedback can be relayed to the driver through a feedback actuator via the steering wheel. The loss of road feel caused by the absence of the steering column, which normally strongly influences the driver's directional wish, is recreated by the feedback actuator.

Steer-by-wire steering system for motorized vehicles

Growing community of inventors

Grossbottwar, Germany

Wolfgang Pfeiffer