Abstract: A motor vehicle system comprising a first electric parking brake actuation unit assigned to a first vehicle wheel, and a second electric parking brake actuation unit assigned to a second vehicle wheel. The system further comprises a first control unit which includes at least one first microprocessor and which is designed to control at least the first electric parking brake actuation unit and an anti-lock and/or vehicle stability control system. A second control unit of the system comprises at least one second microprocessor and is designed to control at least the second electric parking brake actuation unit and an electric braking power generator and/or an automatic transmission. In some variants, a separate parking brake control unit can be dispensed with as the braking brake control function is shared between control units that can be used for other purposes.

Abstract: The present disclosure relates to a method for operating a vehicle brake system which includes the following steps: (1) determining a first wear value, which indicates wear of the friction lining of the vehicle brake, by taking into account at least one of the relevant parameters related to the operational history of the vehicle; (2) In dependence upon whether the first wear value meets a predetermined criterion, measuring the wear of the friction lining by moving the parking brake unit and by recording the curve of operating parameters of the parking brake unit while moving; (3) determining, based on the measurement, a second wear value, which indicates wear of the friction lining of the vehicle brake. The present disclosure also relates to a vehicle braking system, as well as a computer program and a control unit for implementing the method.

Abstract: A method for operating a vehicle brake, wherein the vehicle brake comprises a service brake having an actuating piston, which can be moved into an actuation position in order to produce a braking force by the action of a hydraulic pressure, and wherein the vehicle brake also comprises a parking brake unit, which is designed to move over a first motion range without producing a braking force and is also designed to move over a second motion range, in which the parking brake unit is supported against the actuating piston and a braking force is thus changed, wherein the first and second motion ranges transition into each other at a support point, wherein the method is performed in the pressureless state or at a hydraulic pressure below a predefined threshold value and comprises the following steps: a) moving the parking brake unit from the first into the second motion range or vice versa; b) recording the curve of an operating parameter of the parking brake unit during step a); and c) determining the position of

Abstract: A motor vehicle brake, in particular a combined hydraulically and electromechanically actuatable motor vehicle brake, with an actuator assembly comprising: a housing, an actuator which can be moved relative to the housing for hydraulically or electromechanically moving a brake lining, a motor drive, a movement mechanism which is arranged between the motor drive and the movable actuator, a gear arrangement which is paired with the movement mechanism, and a separate self-locking device which is designed to block the movement mechanism when necessary, wherein the movement mechanism has a ball screw drive with a rotatable spindle and a nut which can be moved in the housing in a linear manner. The nut can be moved within the housing in order to move the actuator by rotating the spindle, and the gear arrangement has at least two gear stages.

Abstract: The invention relates to a motor vehicle brake, in particular a motor vehicle brake that can be actuated in a combined hydraulic and electromechanical manner, having an actuator assembly comprising: a housing, an actuating element that can be displaced relative to the housing along a longitudinal axis for the hydraulic or electromechanical displacement of a brake lining, a motor drive, and a displacement mechanism, arranged between the motor drive and the displaceable actuating element, for displacing the actuating element. The displacement mechanism has a multi-stage spindle-nut arrangement comprising a first spindle-nut pair having a first thread pitch and a second spindle-nut pair having a second thread pitch, wherein the first thread pitch is greater than the second thread pitch, wherein, during an electromechanical actuation of the motor vehicle brake, the first spindle-nut pair is active in a first actuating phase and the second spindle-nut pair is active in a second actuating phase.

Abstract: The invention relates to a motor vehicle brake, in particular a motor vehicle brake that can be actuated in a combined hydraulic and electromechanical manner, having an actuator assembly comprising: a housing, an actuating element that can be displaced relative to the housing along a longitudinal axis for the hydraulic or electromechanical displacement of a brake lining, a motor drive, and a displacement mechanism, arranged between the motor drive and the displaceable actuating element, for displacing the actuating element. The displacement mechanism has a multi-stage spindle-nut arrangement comprising a first spindle-nut pair having a first thread pitch and a second spindle-nut pair having a second thread pitch, wherein the first thread pitch is greater than the second thread pitch, wherein, during an electromechanical actuation of the motor vehicle brake, the first spindle-nut pair is active in a first actuating phase and the second spindle-nut pair is active in a second actuating phase.

Abstract: A motor vehicle brake, in particular a combined hydraulically and electromechanically actuatable motor vehicle brake, with an actuator assembly comprising: a housing, an actuator which can be moved relative to the housing for hydraulically or electromechanically moving a brake lining, a motor drive, a movement mechanism which is arranged between the motor drive and the movable actuator, a gear arrangement which is paired with the movement mechanism, and a separate self-locking device which is designed to block the movement mechanism when necessary, wherein the movement mechanism has a ball screw drive with a rotatable spindle and a nut which can be moved in the housing in a linear manner. The nut can be moved within the housing in order to move the actuator by rotating the spindle, and the gear arrangement has at least two gear stages.

Abstract: The invention relates to a pedal simulation device for simulating the reaction behavior of a pedal, in particular of a brake pedal of a vehicle brake system, comprising a cylinder, a piston disposed displaceably inside the cylinder and coupled to the pedal and delimiting a working chamber inside the cylinder, a resetting element which, upon an actuation of the pedal, exerts a resetting force on the pedal, and a modelling device, which is fluidically connected to the working chamber, for influencing the reaction behavior of the pedal. In the invention, for achieving the reaction behavior it is provided that, upon an actuation of the pedal, by means of the modelling device a vacuum, which is arising or has arisen in the working chamber, is built up.

Abstract: Brake equipment comprising a hydraulic, single- or multi-circuit braking system of a land vehicle having an electric drive for executing a regenerative braking of the land vehicle by means of at least one electric machine in or on the drive train of the vehicle and also a braking of the land vehicle by means of at least one wheel brake. A brake pedal and at least one sensor are used to detect a braking requirement of the driver. A master cylinder is used to supply pressurized hydraulic fluid into at least one brake circuit that supplies at least one wheel brake in accordance with the braking requirement. Associated with at least one brake circuit is an electrohydraulic control unit comprising at least a first connection for hydraulic fluid and at least a second connection for hydraulic fluid.

Abstract: The invention relates to a pedal simulation device for simulating the reaction behaviour of a pedal, in particular of a brake pedal of a vehicle brake system, comprising a cylinder, a piston disposed displaceably inside the cylinder and coupled to the pedal and delimiting a working chamber inside the cylinder, a resetting element which, upon an actuation of the pedal, exerts a resetting force on the pedal, and a modelling device, which is fluidically connected to the working chamber, for influencing the reaction behaviour of the pedal. In the invention, for achieving the reaction behaviour it is provided that, upon an actuation of the pedal, by means of the modelling device a vacuum, which is arising or has arisen in the working chamber, is built up.

Abstract: The present invention relates to a brake force generator for a vehicle hydraulic brake system comprising a force input element that is connectable or connected to a brake pedal, a master cylinder, in which a primary piston is displaceably guided, wherein the primary piston with the master cylinder delimits a primary pressure chamber for generating a hydraulic brake pressure, and an actuating-force generating device for exerting an actuating force on the primary piston, wherein the actuating-force generating device comprises a control valve and a chamber arrangement, wherein the chamber arrangement is formed by a vacuum chamber and a working chamber, which is separated from the vacuum chamber by a movable wall and fluidically connectable by the control valve, and wherein the control valve comprises a control sleeve, which is displaceable relative to a valve element in accordance with a pedal actuation to achieve a pressure difference between the working chamber and the vacuum chamber that determines the actuat

Abstract: A brake system for a motor vehicle includes a master brake cylinder in which a primary piston for generating a brake pressure in a hydraulic brake circuit can be displaced according to actuation of a brake pedal. It is possible to displace the primary piston under the effect of a hydraulic servo pressure circuit in the master brake cylinder. The hydraulic servo pressure circuit includes a pressure source for generating the servo pressure and a pressure accumulator for maintaining a minimum servo pressure in the servo pressure circuit, wherein the discharge line is constructed with a non-return valve which only allows discharge of hydraulic fluid from the pressure accumulator into the servo pressure circuit. A pressure sensor for detecting the hydraulic pressure prevailing in the pressure accumulator is associated with the pressure accumulator.

Abstract: The invention relates to a brake system for a motor vehicle comprising a master brake cylinder in which a primary piston for generating a brake pressure in a hydraulic brake circuit can be displaced according to actuation of a brake pedal, it being possible to displace the primary piston under the effect of a hydraulic servo pressure circuit in the master brake cylinder and the hydraulic servo pressure circuit comprising a pressure source for generating the servo pressure and a pressure accumulator for maintaining a minimum servo pressure in the servo pressure circuit. It is provided in this brake system that the pressure accumulator of the servo pressure circuit can be supplied with hydraulic fluid as a function of the servo pressure prevailing in the servo pressure circuit.

Abstract: A braking force generator includes a primary piston displaceable in a housing to enclose a primary pressure chamber. A pedal simulation device is connected to the force input element. A pedal actuation detection device detects the pedal actuation and an actuating force booster stage. During normal operation the force input element is mechanically uncoupled from the primary piston, and the actuating force booster stage exerts an actuating force on the primary piston. In the event of failure of the actuating force booster stage the force input element is workingly connectable to the primary piston such that a contact extension extends from the primary piston towards the force input element. During normal operation the contact extension is held by a release gap at a distance from the force input element and in the event of failure of the actuating force booster stage the force input element after travelling the release gap is applied workingly against the contact extension.

Abstract: A braking force generator includes a primary piston displaceable in a housing to enclose a primary pressure chamber. A pedal simulation device is connected to the force input element. A pedal actuation detection device detects the pedal actuation and an actuating force booster stage. During normal operation the force input element is mechanically uncoupled from the primary piston, and the actuating force booster stage exerts an actuating force on the primary piston. In the event of failure of the actuating force booster stage the force input element is workingly connectable to the primary piston such that a contact extension extends from the primary piston towards the force input element. During normal operation the contact extension is held by a release gap at a distance from the force input element and in the event of failure of the actuating force booster stage the force input element after travelling the release gap is applied workingly against the contact extension.

Abstract: The invention relates to a brake system for a motor vehicle comprising a master brake cylinder in which a primary piston for generating a brake pressure in a hydraulic brake circuit can be displaced according to actuation of a brake pedal, it being possible to displace the primary piston under the effect of a hydraulic servo pressure circuit in the master brake cylinder and the hydraulic servo pressure circuit comprising a pressure source for generating the servo pressure and a pressure accumulator for maintaining a minimum servo pressure in the servo pressure circuit. It is provided in this brake system that the pressure accumulator of the servo pressure circuit can be supplied with hydraulic fluid as a function of the servo pressure prevailing in the servo pressure circuit.

Abstract: The invention relates to a piston device for a vehicle brake system, in particular for a pedal simulation apparatus of a vehicle brake system, having a piston shank extending in the direction of a longitudinal axis and having a radially extending piston disk formed on said piston shank, wherein the piston disk has a radially outer region, in which an outwardly open radial groove is formed, and wherein sealing means are or may be accommodated in the radial groove. In the invention it is further provided that the sealing means comprise a flexible sealing ring, which is or may be accommodated with axial and radial clearance in the radial groove, that the outside diameter of the sealing ring exceeds the outside diameter of the piston disk and that the piston disk is provided with at least one vent hole opening into the radial groove.

Abstract: The invention relates to a pedal simulation device for simulating the reaction behaviour of a pedal, in particular of a brake pedal of a vehicle brake system, comprising a cylinder, a piston disposed displaceably inside the cylinder and coupled to the pedal and delimiting a working chamber inside the cylinder, a resetting element which, upon an actuation of the pedal, exerts a resetting force on the pedal, and a modelling device, which is fluidically connected to the working chamber, for influencing the reaction behaviour of the pedal. In the invention, for achieving the reaction behaviour it is provided that, upon an actuation of the pedal, by means of the modelling device a vacuum, which is arising or has arisen in the working chamber, is built up.

Abstract: An apparatus for controlling the brake pressure in a vehicle brake system equipped with an electronically adjustable brake booster (10), comprising an actuator (22) which transmits the actuating movement of the brake pedal to a master brake cylinder and has assigned a path limiting element (80) which limits the axial actuating movement of the actuator (22) in that it is received between abutments (90, 92), the apparatus being characterized in that a switch is actuated by the path limiting element (80) together with one of the abutments (90), said switch supplying a signal to the brake booster when the path limiting element (80) abuts the one abutment (90).

Abstract: An electronically controlled brake booster for a road vehicle brake system having a housing comprises a vacuum chamber (16) and a servo chamber (14) separated from said vacuum chamber (16) by a movable wall (18), an electromagnetically operatable control valve device (20) which is coupled to said movable wall (18) for common relative movement with respect to the housing of the brake booster and a sensor (32) which, for an electronic control device (ECU), senses operating conditions of the road vehicle brake system and produces signals characteristic for these operating conditions which signals are evaluated by said control device (ECU) for producing drive signals (S.sub.1a, S.sub.1b) for said control valve device (20), wherein the sensor is formed as a pressure sensor (32) and senses at least the pressure (p.sub.AK) prevailing in said servo chamber (14).