Robert Boschgmbh

Werner Quirant

Michael Kunz

Gebhard Wuerth

Volker Mehl

Matthias Leiblein

Karl-Heinz Willmann

Jens Kolarsky

Urs Bauer

Stefan Strengert

Dirk Foerch

Guenther Schmidt

Thierry Pasquet

Michael Bunk

Timo Jahnz

Hans Heckmann

Andreas Soenkens

Harald Hermann

Thomas Kuhn

Stefan Schneider

Philipp Grell

Niccolo Haegele

Thomas Loeffler

Willem-Remco Pasterkamp

A method for implementing a communication between at least two control units, and a control unit interconnection for implementing the method are provided. An electronic hardware security module is provided in each control unit, the communication taking place via an additional communications link.

Method for implementing a communication between control units

A brake system for a vehicle having a master brake cylinder, which provides a pressure signal, having a brake-medium reservoir connected to the master brake cylinder, and a first brake circuit, which is coupled by a first input to the master brake cylinder and by a second input to the brake-medium reservoir, and having at least one first wheel-brake cylinder, which is mounted at a first wheel, in order to exert a force corresponding to the pressure signal onto the first wheel, and having a separator valve, which is configured between the first input and the first wheel-brake cylinder, to prevent further transmission of the pressure signal upon receipt of a supplied closing signal; and having a control valve, which is configured between the first input and the first wheel-brake cylinder; in order to control an inflow of a brake medium from brake-medium reservoir to the first wheel-brake cylinder. In addition, a method for controlling a corresponding brake system is also described.

Brake system and method for controlling a brake system

A hydraulic braking system and a method for operating the hydraulic braking system. The hydraulic braking system has a first pressure generating unit and a second pressure generating unit. The first pressure generating unit is hydraulically interruptibly and uncircumventably connected to the second pressure generating unit via a first interrupting element in such a way that with the first interrupting means in a closed position, a hydraulic connection between the first and second pressure generating unit is no longer possible.

Hydraulic brake system and method for operating a hydraulic brake system

A brake system for a vehicle having a master brake cylinder, which provides a pressure signal, having a brake-medium reservoir connected to the master brake cylinder, and a first brake circuit, which is coupled by a first input to the master brake cylinder and by a second input to the brake-medium reservoir, and having at least one first wheel brake cylinder, which is mounted at a first wheel, in order to exert a force corresponding to the pressure signal onto the first wheel, and having a separator valve, which is configured between the first input and the first wheel-brake cylinder, to prevent further transmission of the pressure signal upon receipt of a supplied closing signal; and having a control valve, which is configured between the first input and the first wheel-brake cylinder; in order to control an inflow of a brake medium from brake-medium reservoir to the first wheel-brake cylinder. In addition, a method for controlling a corresponding brake system is also described.

A hydraulic braking system is provided as well as a method, relating to a master brake cylinder, a first brake pressure generator, as well as a wheel brake cylinder. The braking system includes a second brake pressure generator which is connected to the at least one wheel brake cylinder. The master brake cylinder is hydraulically connectable to the at least one wheel brake cylinder via the second brake pressure generator. This has the advantage that a secure braking system may be provided including one additional fallback level, hydraulically via the driver as well as by providing a second, additional brake pressure generator.

Braking system including first and second brake pressure generator as well as a method for operating such a braking system

A control device for a braking system equipped with an electric drive device and/or generator device includes: a first receiving device with the aid of which a specified value regarding a brake pressure in at least one wheel brake cylinder of at least one brake circuit is receivable, a second receiving device with the aid of which an actual value regarding a pressure in the at least one brake circuit and/or the brake pressure in the at least one wheel brake cylinder is/are receivable, and a control unit with the aid of which a setpoint mode of the electric drive device and/or generator device is specifiable taking the received specified value and the received actual value into account.

Control device and method for operating a braking system equipped with an electric drive device and/or generator device

A brake device for motor vehicles has at least two hydraulic brake circuits which are directly connected to a master brake cylinder, as well as an additional brake circuit, which is able to be actuated via a control device, independently of the master brake cylinder. Because of the separate hydraulic brake circuits in the region of the front axle, redundancy is provided, while the third brake circuit, that is able to be actuated independently of the master brake cylinder and typically acts on the rear wheels, during automatic actuation, permits taking into account a braking effect by additional active assemblies, such as a driven generator.

Brake device for a motor vehicle having at least three brake circuits

In a brake device for a motor vehicle having a first and a second hydraulic brake circuit, the second brake circuit is decoupled from the main brake cylinder in partial braking operations, and is operated with the aid of a pressure accumulator controlled by a control device, which takes an additional deceleration effect due to an active power component, e.g., a generator, into account.

Brake device for a motor vehicle having a pressure accumulator

In a braking device for a motor vehicle having a first group and a second group of brake circuits, each brake circuit being associated with one group of wheels, and at least the first group of brake circuit being implemented as hydraulic brake circuits, at least one group of wheels being connected to at least one operating unit, which may cause a deceleration of the wheels, the task of a comfortable connection of recuperation brake applications to conventional brake applications is achieved in that a control unit controls the brake application of the brake circuit or circuits of the second group and optionally the deceleration effect of the operating unit or assemblies, the first group of brake circuits being activatable directly by the driver using a brake operating unit.

Braking device for a motor vehicle

The invention relates to a method for operating a braking system for motor vehicles with electrically actuated hydraulic valves, the coils of which are powered up, at least in phases, with currents which modify the currentless state of the hydraulic valves, in order to heat the hydraulic fluid present in the system. The hydraulic fluid is heated via a heating profile which, in accordance with the hydraulic fluid temperature, activates the heating phase of the hydraulic fluid. The heating profile consists of a first heating phase and, subsequent thereto, a second heating phase. During the first heating phase, the coils are powered up in such a way that the coil temperature at the end of the first heating phase corresponds to a pre-defined temperature value of the coil which is at least approximately maintained during the second heating phase when powering up the coils.

Method for operating a brake system for motor vehicles

A road vehicle hydraulic brake system, having a master brake cylinder for generating a master cylinder pressure based on the braking intent of a driver of the vehicle, having a hydraulic unit connected between the master brake cylinder and at least one wheel brake cylinder of at least one wheel, and a method of control thereof are described. The hydraulic unit, with which a brake pressure boost is achievable by generating in the at least one wheel brake cylinder a wheel cylinder pressure greater than the master cylinder pressure, has a system of actuatable valves and at least one hydraulic pump. A differential pressure valve between the master brake cylinder and the hydraulic unit opens or closes the hydraulic connection between the master brake cylinder and the hydraulic unit at a predetermined pressure difference between the master cylinder pressure and the wheel cylinder pressure, to increase the wheel cylinder pressure.

Hydraulic brake system and method for controlling same

A hydraulic braking apparatus for a motor vehicle having a service braking system (A) fed by a central hydraulic unit () and an emergency braking system (B). A simulator (M) resists a forward motion of an actuator member (D,) for a master cylinder () to define a reaction corresponding to the progress of a braking operation. Admission solenoid values () and exhaust solenoid values () connected to the wheel brakes () modulate pressurized fluid supplied by a central hydraulic unit () in effecting the braking operation. Sensors () in the motor vehicle detect various braking parameters that are communicated to a computer (C) to control the solenoid valves () such that the braking operation is a function of the travel of the actuator member (D,).

Vehicle hydraulic braking system with an active simulator

In a hydraulic vehicle braking systems operable via hydraulic external energy from a pump or, in the event the pump malfunctions, via hydraulic energy made available using a master brake cylinder via muscle-powered energy, provision is made for safe braking via muscle-powered energy such that at least one cylinder-piston configuration isolates at least two wheel brakes from the hydraulic pressure medium that is able to be pumped by the pump. The hydraulic vehicle-braking system incorporates wheel brakes of one axle that is isolated from a hydraulic pump in terms of pressure medium by a cylinder-piston configuration, which wheel brakes are supplied with pressure medium by one master cylinder chamber of a master brake cylinder. The other master brake cylinder chamber is allocated to the two other wheel brakes of the other vehicle axle, so that given bubble-free pressure medium downstream from the pump, the wheel brakes of both vehicle axles make a contribution to vehicle deceleration.

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Beilstein, Germany

Werner Quirant