Robert Boschgmbh

Matthias Kistner

Otmar Bussmann

Bertram Foitzik

Simon Hansmann

Urs Bauer

Dirk Foerch

Jens Wagner

Robert Kaster

Rolf Ellwein

Herbert Vollert

Reinhard Weiberle

Karl-Heinz Willmann

Laurent Lhuillier

Chris Anderson

Bastien Cagnac

Raynald Sprocq

Antony Auguste

Dagobert Masur

Michael Kunz

Stefan Strengert

Klaus Walter

Matthias Schanzenbach

Klaus Heyer

Ralf Kinder

Peter Ziegler

Andreas Birkheim

Oliver Leibfried

Christian Woerz

Dieter Pflaum

Florent Yvonet

Oliver Marquardt

Armin Kunz

Volkmar Schlotter

Tim Albert

Juergen Vogg

Juergen Haslsteiner

Suekrue Senol

Takeshi Kaneko

Wheel brakes of one vehicle axle of a dual-circuit hydraulic-power vehicle brake system for an electric or hybrid vehicle are connected to one brake circuit. Brake pressure is applied by a power brake-pressure generator to the two brake circuits with a time offset. It is thereby possible to compensate for a deceleration effect of an electric motor of the vehicle, which is operated as a generator during a braking.

Service brake application utilizing a multi-circuit hydraulic-power vehicle brake system

In a method for monitoring the operational reliability of a braking system in a vehicle. A brake pedal actuation is monitored via a brake light switch. An error signal is generated if the brake light switch generates a switch signal, without a braking intent of the driver being registered via a sensor signal of a sensor.

Method for monitoring the operational reliability of a braking system in a vehicle

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 pedal force simulator device includes: a pressure piston actuatable by a brake pedal and axially moveably mounted in a housing; and at least two disk spring stacks connected in series, each disk spring stack having at least two disk springs, at least two of the disk spring stacks having different spring constants, and the disk spring stacks being situated in the housing between an end face of the pressure piston and an axial stop of the housing. At least one of the disk spring stacks includes an axial receiving recess, in which a spring element, which can be elastically deformed by the pressure piston, is situated, one end of the spring element being supported on the pressure piston and the other end being supported on one of the disk spring stacks.

Pedal force simulator device

A method for functional testing of an electromechanical fill level monitoring device. In order to test the plausibility of a signal emitted by a fill level monitoring device of a first pressure medium chamber, a forced actuation of this fill level monitoring device is carried from time to time. This forced actuation is carried out in that a pressure medium delivery unit in a pressure medium circuit having the first pressure medium chamber is activated for a predefined period. This delivers the pressure medium fill level monitoring device into a second pressure medium chamber via a pressure medium connection. On the basis of the signal profile output by the fill level monitoring device, the proper operation of the fill level monitoring device is inferred in the electronic control unit.

Method for the functional testing of an electromechanical fill level monitoring device

A brake-force simulator for a motor vehicle includes a piston operatively connectible to an operable brake pedal that is guided in an axially displaceable manner in a cylinder; and at least one elastomer spring element situated in the cylinder, which acts with a spring force counter to the movement of the piston in one direction.

Brake-force simulator for a motor vehicle

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 master brake cylinder is described for a brake system of a motor vehicle as having a hydraulic cylinder that has a plurality of hydraulic connections, in which at least one hydraulic piston is mounted so as to be displaceable axially in a direction of actuation and in a relief direction, the hydraulic piston being displaceable against the force of a spring element in the direction of actuation, the hydraulic piston having at least one lateral wall opening that, in at least one sliding position, opens into an inner chamber of the hydraulic cylinder. It is provided that the lateral wall opening is assigned an elastically deformable sealing ring that on its inner side is fastened on the hydraulic piston and on its outer side is pre-loaded against the hydraulic cylinder by its inherent elasticity and is shaped such that when the hydraulic piston is displaced in the direction of actuation it detaches from the hydraulic cylinder, and when the hydraulic piston is displaced in the relief direction it bears on the hydraulic cylinder.

Master brake cylinder, braking system

A pedal-force simulator device is described as having a housing in which an actuable pressure plunger is mounted in an axially displaceable manner, and having at least two coil springs, which are disposed parallel to one another between an end face of the pressure plunger and an axial stop of the housing. It is provided that at least one disk spring is interposed between the coil springs and the axial stop and/or between the coil springs and the pressure plunger in each case.

Pedal-force simulator device

A braking device for a vehicle, in particular a motor vehicle, including an actuatable brake pedal, a piston of a master brake cylinder mechanically coupled to the brake pedal, the piston being supported in the master brake cylinder so as to be axially displaceable in an actuation direction and in a release direction, and including at least one radial seal that acts between the piston and the master brake cylinder. At least one elastically deformable and/or displaceable damping element opposes the displacement of the piston in the release direction.

Brake device for a vehicle

A control device for at least one electric parking brake of a vehicle brake system of a vehicle having a control instrument, to determine a setpoint variable regarding a setpoint braking torque to be generated with the parking brake and to output a control signal, the control instrument being configured to ascertain/detect, based on at least one provided signal, whether a brake booster is in at least one functionally limited or incapacitated state, and, if indicated, to determine the setpoint variable by considering at least one defined parameter regarding a requested total braking torque and to control the electric parking brake so that a corresponding actual braking torque is exertable with the parking brake. Also described is an electric parking brake for a vehicle brake system and to a vehicle brake system, and a method for operating a vehicle brake system having a brake booster and an electric parking brake.

Control device for at least one electric parking brake of a brake system of a vehicle and method for operating a brake system of a vehicle having a brake booster and an electric parking brake

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 power unit for a braking system of a vehicle, including a first sub-brake circuit or brake circuit and a second sub-brake circuit or brake circuit, a first supply line branching into a first line section having a first circuit separating valve situated therein, and a second line section having a first electrically controllable reservoir separating valve and/or first check valve situated therein, and a second supply line branching into a third line section having a second circuit separating valve situated therein and a fourth line section having a second electrically controllable reservoir separating valve and/or second check valve situated therein.

Hydraulic power unit and braking system for a vehicle

A power brake system having electronic slip regulation, and a method for controlling a power brake system having electronic slip regulation. A return line is equipped with a pressure medium storage unit for storing pressure medium with a pressure that is greater than an ambient atmospheric pressure, and is equipped with a blocking device that is controllable and that is situated between the pressure medium storage device and the reservoir. In addition, there is a pressure medium connection between the pressure medium storage unit and the plunger working space. A controlling of a power brake system takes place using the blocking device in such a way that the return line is blocked relative to the reservoir as soon as a plunger piston, driven by a drive unit, has traveled a definable path in the forward direction.

Power brake system having electronic slip regulation, and method for controlling a power brake system having electronic slip regulation

A brake booster device for a braking system of a vehicle includes: a booster body to which a brake-boosting force is exertable by an actuator device; a first piston rod component to which the brake-boosting force is at least partially transmittable via a first contact with the booster body, the first piston rod component contacting the booster body at a first contact surface such that the first piston rod component is at least partially adjustable; and a second piston rod component to which the brake-boosting force is at least partially transmittable via a second contact with the booster body, the second piston rod component contacting the booster body at a second contact surface such that the second piston rod component is adjustable together with the first piston rod component.

Growing community of inventors

Bretzfeld, Germany

Matthias Kistner