Robert Boschgmbh

Urs Bauer

Matthias Kistner

Otmar Bussmann

Bertram Foitzik

Karl-Heinz Willmann

Robert Kaster

Rolf Ellwein

Michael Kunz

Ryan A Kuhlman

Werner Quirant

Herbert Vollert

Willi Nagel

Martin-Peter Bolz

Stefan Strengert

Werner Harter

Dirk Foerch

Matthias Schanzenbach

Simon Hansmann

Wolfgang Pfeiffer

Frank Kaestner

Oliver Leibfried

Dagobert Masur

Volkmar Schlotter

Suekrue Senol

Jochen Steinmann

A master brake cylinder for a brake system of a vehicle having a master brake cylinder housing, a primary piston component, a secondary piston component, a primary spring device which is preloaded with a first preload force between the primary piston component and the secondary piston component, and a secondary spring device, which is preloaded with a second preload force between the secondary piston component and a wall component (of the master brake cylinder housing, with the second preload force of the secondary spring device being greater than the first preload force of the primary spring device. A brake device for a vehicle, a brake system for a vehicle, and a production method for a mater brake cylinder for a brake system of a vehicle are also described.

Master brake cylinder for a brake system of a vehicle, brake device and brake system having such a master brake cylinder, and method for producing a master brake cylinder

A method for operating a regenerative braking system of a vehicle by activating at least one motor employable in generator mode taking into consideration a first information with regard to a requested setpoint total braking torque and a second information with regard to an available generator braking torque which is maximally executable by the at least one motor employable in generator mode, if the setpoint total braking torque exceeds a threshold value and/or a piece of warning information regarding a transition to a backup level that is potentially imminent or has occurred of the regenerative braking system, even if the setpoint total braking torque is less than or equal to the maximally executable available generator braking torque, sufficient brake fluid is transferred via at least one hydraulic actuator to a wheel brake cylinder of the regenerative braking system that an air gap of the particular wheel brake cylinder is closed.

Method for operating a regenerative braking system of a vehicle and control unit for a regenerative braking system of a vehicle

A vehicle braking system includes a brake pedal, a master cylinder, a braking circuit with a wheel cylinder, a brake pressure generator for brake-by-wire braking, and a pedal feel simulator. In response to detecting impending wheel lock-up, a controller conducts an anti-lock braking routine during which the controller is programmed to create an artificial haptic feedback pulse to the brake pedal by opening a normally-open isolation valve between the master cylinder and the brake circuit to move a master cylinder piston until a compensation port opens.

Haptic feedback for decoupled brake system

A control apparatus for hydraulic components of a braking system of a vehicle, having a control application device that is designed to establish by application of control to the hydraulic components, in consideration of the braking request, at least one brake pressure in at least one wheel brake cylinder in such a way that the braking request is satisfiable; and to execute an antilock braking function at the at least one wheel brake cylinder, the control application device additionally being designed to ascertain whether at least one furnished actual value with regard to a displacement travel (s) of a brake actuation element of the vehicle out of its initial position, and/or with regard to a simulator volume shifted out of a brake master cylinder of the vehicle into a linked simulator, lies within at least one predefined extreme value range.

Control apparatus for hydraulic components of a braking system of a vehicle, and method for executing an antilock braking function at at least one wheel brake cylinder of a vehicle

A hydraulic braking system having: at least one wheel brake cylinder; a primary brake pressure generator that is disconnectably hydraulically coupled to the at least one wheel brake cylinder and is embodied to impinge upon the at least one wheel brake cylinder with pressure by way of a hydraulic fluid; a brake master cylinder that has at least one first pressure chamber and to which at least one wheel brake cylinder is hydraulically coupled; and a secondary brake pressure generator that is coupled to the first pressure chamber of the brake master cylinder and is embodied to impinge upon the first pressure chamber of the brake master cylinder with pressure, the secondary brake pressure generator being controllable independently of the primary brake pressure generator. Also disclosed is a related method.

Hydraulic braking system and method

The present invention relates to a braking device and to a braking system, each having a master brake cylinder () having at least one first pressure chamber () that is subdivided or is able to be subdivided at least into a first partial volume () and a second partial volume (), which are hydraulically connectable or connected to a brake fluid reservoir (), a first brake circuit () being hydraulically connectable or connected to the first partial volume (), and having a valve device () that is mechanically designed in such a way that a pressure buildup up to a mechanically specified limit pressure may be brought about in the second partial volume (), brake fluid being transferable at least into the first brake circuit () via at least one subcomponent () of the valve device (), and an exceeding of the limit pressure in the second partial volume () being prevented.

Braking device for a braking system of a vehicle and braking system for a vehicle

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 control device is provided for a vehicle having an activation device, with the aid of which, at least under consideration of at least one brake demand signal provided by an on-board sensor and/or control device, at least one first control signal may be output to at least one electric drive motor of the vehicle, with which the at least one electric drive motor is controllable into a motor mode, in which a generator braking torque which is unequal to zero may be exerted on at least one wheel of the vehicle by the at least one electric drive motor, the at least one electric drive motor being controllable with the aid of the at least one first control signal into at least one overload operating mode as the motor mode, in which the generator braking torque which is unequal to zero may be exerted on the at least one wheel. A method is also provided for operating at least one electric drive motor for a vehicle.

Brake control device for a vehicle and method for operating at least one electric drive motor for a vehicle

A control system for an electric motor usable as a generator of a vehicle includes: a first control device and a second control device each configured to define, in consideration of at least one furnished first specification signal with regard to a driver-requested or autonomously requested braking input, at least one target braking torque variable with regard to at least one generator braking torque to be exerted by way of the at least one electric motor on at least one wheel of the vehicle and/or on at least one axle of the vehicle, and to output to the at least one electric motor, and/or to at least one electronic control system of the at least one electric motor, at least one output signal corresponding to the at least one target braking torque variable.

Control system for at least one electric motor, usable as a generator, of a vehicle; and braking system for a vehicle

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 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.

Growing community of inventors

Sachsenheim, Germany

Urs Bauer