Abstract: A brake control device includes a first braking unit and a second braking unit for applying braking force to wheels of a vehicle. The second braking unit generates auxiliary braking force when actual braking force generated by the first braking unit is short by a predetermined amount. This brake control device includes a determination unit that determines whether a delay correlation value correlated with response delay of the actual braking force is within an allowable range when the auxiliary braking force is generated, and a control unit that executes auxiliary reduction control for reducing the auxiliary braking force when the determination unit determines that the delay correlation value is within the allowable range.

Abstract: A method for controlling a hydraulic brake system for a motor vehicle to carry out a braking operation by means of at least one wheel brake includes, in a first step, a pressure buildup in the wheel brake, wherein hydraulic fluid is passed to a wheel brake via a normally open inlet valve. In a second step, a pressure reduction takes place in the wheel brake, wherein hydraulic fluid is discharged from the wheel brake via an energized normally closed outlet valve. The pressure reduction at the wheel brake is accomplished by means of control of the outlet valve in a predefined manner.

Abstract: A pedal-travel simulator of a hydraulic power vehicle brake system is connected to a brake-fluid reservoir by way of a groove between two piston seals of a power brake-pressure generator. Any air bubbles in the brake fluid get out of the pedal-travel simulator into the brake-fluid reservoir, and the piston seals are lubricated with the brake fluid.

Abstract: An operating device for a vehicle brake system may include a control device and a piston-cylinder unit, at least one chamber of which may be connected to at least one wheel brake via at least one hydraulic line and a valve device that has at least normally open inlet valves or switching valves. The device may further include a pressure source that may be controlled to supply pressure medium to the at least one hydraulic line or to the at least one wheel brake. The control device may control pressure build-up via volume control and/or time control, using inlet valves. The interior or armature chamber of an inlet valve may be connected to a corresponding brake circuit via a hydraulic line, and a valve seat outlet may be connected to a corresponding wheel brake via a hydraulic line.

Abstract: A method for influencing the kinematic behavior of a vehicle, in particular a rail vehicle with at least one friction brake system, wherein a brake effect is generated by pressing at least one first and second friction elements against each other, where to achieve advantageous method conditions, temperatures of at least the first friction element are calculated from at least speed, brake pressure, external temperature of the vehicle and absolute times, and heat conduction through the first friction element and a speed-dependent cooling process of the first friction element are taken into consideration during the calculation, and where the kinematic behavior of the vehicle is influenced based on the calculation such that expensive fitting of the friction brake system with sensors for measuring friction element temperatures can be advantageously omitted, and the thermal state of the friction brake system can still be estimated with a high degree of precision.

Abstract: A method of conducting a diagnostic test to determine leakage within a brake system includes first providing a brake system having a plunger assembly including a housing defining a bore therein. The plunger assembly includes a piston slidably disposed therein such that movement of the piston pressurizes a pressure chamber when the piston is moved in a first direction. The pressure chamber of the plunger assembly is in fluid communication with an output, and wherein the plunger assembly further includes an electrically operated linear actuator for moving the piston within the bore. The linear actuator of the plunger assembly is actuated to provide pressure at the output of the plunger assembly at a first predetermined level. The pressure at the output of the plunger assembly is held for a predetermined length of time. The method further includes determining whether conditional criteria has been met indicating a leakage within the brake system.

Abstract: An air motor is provided for converting electrical energy into kinetic energy, and using the kinetic energy to generate a specified air pressure and a specified airflow rate. The air motor comprises plural air motor units, each of which includes a main body and a piezoelectric actuator. The piezoelectric actuator is disposed within the main body. When the piezoelectric actuator is enabled, the air within the main body is controlled and driven to flow. The air motor can be used to replace various types of motors, compressors or engines.

Abstract: The present disclosure provides a method and an apparatus for vehicle control. The method includes: obtaining (101) manual operation information of a vehicle; determining (102) an intervention intention of a driver based on the manual operation information; and controlling (103), when the vehicle is currently in an automated driving mode and the intervention intention is determined to be a slow intervention, the vehicle to reach a predetermined safe state and handing corresponding control of the vehicle over to the driver. The method and apparatus can solve potential safety problems in vehicle control and improve safety of the vehicle control.

Abstract: A method for controlling a mechanical system having a plurality of components interlinked by a plurality of driven joints, the method comprising: measuring torques or forces about or at the driven joints and forming a load signal representing the measured torques or forces; receiving a motion demand signal representing a desired state of the system; implementing an impedance control algorithm in dependence on the motion demand signal and the load signal to form a target signal indicating a target configuration for each of the driven joints; measuring the configuration of each of the driven joints and forming a state signal representing the measured configurations; and forming a set of drive signals for the joints by, for each joint, comparing the target configuration of that joint as indicated by the target signal to the measured configuration of that joint as indicated by the state signal.

Abstract: An electrical component assembly suitably prevents electrical components from coming off, while adopting a simple structure of connection by a connection terminal to a control board. The electrical component assembly includes a housing in which the electrical components are assembled, and the electrical components and the housing are fixed to a surface of a base body. The electrical component includes a connection terminal to be press-contacted into a through hole of a substrate of the housing. The electrical component is provided with an electrical component adhesion margin facing said surface of the base body, so as to be fixed to the base body by an adhesive interposed between the base body and the electrical component adhesion margin.

Abstract: A pedal simulator includes a pedal simulator piston configured to move in a linear direction based on a pedal stroke of a driver, a first stopper that is rotatable in a clockwise or counterclockwise direction and configured to adjust a pedal tactile feedback provided to the driver based on the rotation of the first stopper, a first damper disposed inside the pedal simulator piston to be spaced apart from the first stopper by an air gap, and configured to contract or expand based on the movement in the linear direction, and a second stopper configured to be operatively coupled with the first stopper for causing the air gap to change based on the rotation of the first stopper, wherein the pedal tactile feedback changes based on a change in the air gap.

Abstract: An electric component assembly includes a housing with which an electric component is fitted, and the electric component and the housing are fixed to one surface of a base body. The electric component includes a connection terminal press-fitted to a through-hole (201a) of a board provided in the housing, and an insertion direction of the connection terminal into the through-hole is a fitting direction of the electric component with the housing. The electric component assembly includes a rib which is protrudingly provided on either one of an outer surface of the electric component intersecting the fitting direction and an inner surface of the housing facing the outer surface, and a groove portion which is provided as a recess on another one of the surfaces and the rib is inserted into; and a protrusion that abuts onto the rib is provided on an inner surface of the groove portion.

Abstract: Provided is a vehicle body behavior control device and a method of controlling behavior of a vehicle body which can reduce unstable behavior of the vehicle body. A vehicle body behavior control device incorporated into a vehicle body having a plurality of wheels includes: a brake mechanism which controls behavior of the wheels; and a control part which controls an interlocking brake operation in which a braking force is applied to the plurality of wheels using the brake mechanism when an operation for applying braking to any one of the wheels is performed based on a gradient value ? of a road surface on which the vehicle body travels.

Abstract: A braking system for a motor vehicle comprises a first and second electrically controllable pressure source for providing a brake pressure for actuating the wheel brakes. An electrically controllable pressure modulation device sets brake pressures that are individual to each of the wheel brakes, said device having electrically actuatable inlet valves and outlet valves for each wheel brake. The second pressure source comprises a motor-pump unit and at least one low-pressure accumulator. The low-pressure accumulator is connected to an output connection of at least one outlet valve. A first and a second energy supply unit for the braking system are independent from one another. The first energy supply unit supplies the first pressure source with energy. The second energy supply unit supplies the second pressure source with energy. The pressure modulation device is supplied with energy by the first energy supply unit and by the second energy supply unit.

Abstract: A drilling tool, in particular a rock drilling tool, for a portable machine tool, includes a drill head, in particular a hard metal drill head. The drill head includes a drill shaft connected, in particular integrally with the drill head, and a rotational axis. The drill shaft is configured as one piece, has a guide section with guide groove winding in a spiral-shaped about the drill shaft for transporting away drilling dust, and has a securing section provided for detachably securing the drilling tool to a machine tool. The guide section has a diameter reinforcement at a drill head support region of the guide section neighboring, in particular adjacent to, the drill head.

Abstract: 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.

Abstract: A controlled brake solenoid valve assembly includes a housing defining a channel. An actuating member including an armature and a plunger slidably disposed in the channel. A head portion extends outwardly from the plunger to a distal end. A drawn seat includes a narrowed portion disposed in the channel and defines a first compartment, a shoulder, and a hole. An elastic member disposed in the channel to bias the actuating member away from the drawn seat to define an opened position. The actuating member includes an actuator for moving the plunger from the opened position to a closed position. The distal end includes a restricting member, disposed in the hole, extending outwardly from the distal end, spaced from the terminal end, for providing annular fluid flow. A restricting block defines a restricting orifice having a variable diameter disposed in the first compartment to provide an orifice fluid flow.

Abstract: A vehicle controller receives sensor outputs and identifies features in the sensor outputs. The controller determines a trajectory based on the features and generates control signals to vehicle actuators to follow the trajectory. Eccentricity of the control signals is evaluated and if it meets a threshold condition is met an intervention is performed such as discarding or modifying the control signal or initiating a safety procedure. Eccentricity may be determined using an unsupervised machine learning model. The threshold condition may be a dynamic threshold condition such as using the n-sigma approach or the Chebyshev inequality.

Abstract: A brake system for a motor vehicle, having a brake pressure source and at least one first wheel brake and at least one second wheel brake, which can be acted on with a brake pressure supplied by the brake pressure source. The first wheel brake is fluidically connected at a first inlet valve and at a first outlet valve, which is fluidically parallel to the first inlet valve, and at a first separating valve via the first inlet valve, and the second wheel brake is fluidically connected at a second inlet valve and at a second outlet valve, which is fluidically parallel to the second inlet valve, and at a second separating valve via the second inlet valve.

Abstract: A device case closing structure (1) has a shield connector (20) with a work opening (25) and is assembled with a device case (10) while holding terminal fittings (32). A seal cover (40) is assembled with the shield connector (20) for closing the work opening (25). Stud bolts (14) connect the terminal fittings (32) with terminal blocks (13) in the device case (10). The seal cover (40) includes a cover body (41) to be fit to the shield connector (20). The cover body (41) includes a vent hole (55) and a breathable film (57) having waterproofness and breathability is arranged to close the vent hole (55). A part of the vent hole (55) serves as a bolt receiving portion (51) for receiving a tip of the stud bolt (14) inside.

Abstract: A brake light sensor module includes: a retainer which is provided to move together with an operation element of a master cylinder in response to a depression of a brake pedal; an operation rod which is connected to the retainer so as to move together with the retainer; an elastic member which is installed in the master cylinder; a signal transmitting element which is installed in the master cylinder, one end of the signal transmitting element being elastically supported by the elastic member, and the other end of the signal transmitting element being supported by the operation rod; and a sensor which is installed in the master cylinder so as to be operated by the signal transmitting element.

Abstract: The invention relates to a brake device and a method for operating a brake device, wherein said brake device comprises an actuation device, also a booster device, in particular having an electro-hydraulic drive, a piston cylinder device (main cylinder) in order to supply hydraulic pressure medium to the brake circuits, a valve device for controlling or regulating the supply of the pressure medium and an electronic control or regulating device (ECU). According to the invention provision is made for additional pressure medium volume to be supplied in a controlled manner to at least one brake circuit by means of a further piston cylinder device, in particular a double stroke piston (10) and at least one valve (AS) controlled by the control or regulating device (ECU).

Abstract: A method for triggering self-braking in a motor vehicle, in which following a first collision during an accident a self-braking request signal is transmitted to a brake controller by a collision sensor unit by a communications device of the motor vehicle. The multi-collision braking requested should be initiated in the event of damage to the brake controller that is caused by the first collision. The request signal is received by a control device of the motor vehicle that is disposed at a distance from the brake controller. The control device then determines whether the brake controller responds to the request signal. If no response of the brake controller is detected, the self-braking is initiated by the control device.

Abstract: Provided is an ABS hydraulic unit where it is unnecessary to change a size of a control circuit board corresponding to a size of a block. An ABS hydraulic unit for performing an antilock brake control of a hydraulic brake includes: a pump and a valve mounted in a hydraulic circuit for making the hydraulic brake perform braking; a motor for operating the pump; a block into which the pump, the valve and the motor are assembled; and a control circuit board for controlling the motor and the valve, wherein the block has a first surface into which. the motor and the valve are assembled, and a second surface which intersects with the first surface, and the control circuit board is arranged such that the control circuit board extends along the second surface and the valve is positioned between the control circuit board and the motor, the control circuit board being electrically connected with the motor and the valve through a wire extending along the first surface.

Abstract: A slip-controllable vehicle brake system includes a drivable pressure generator configured to supply at least one wheel brake of a brake circuit with pressure medium. The pressure generator has a pump inlet valve and a pump outlet valve to control the throughput of the pressure medium. Novel system functions, such as pedestrian protection, require that the pressure generator has a drive with increased power to provide high pressure medium volumes to the wheel brakes at a faster rate. In the case of ABS braking, a high braking pressure generated by the drive works against the starting of the pressure generator and increases the starting current. To ease the starting of the drive and to limit the required starting current, a mechanism is provided downstream of the pump outlet valve which prevents an exerting of the pressure generator on the pressure side with the pressure of the main brake cylinder.

Abstract: Disclosed herein is a hydraulic brake system. The hydraulic brake system comprises a damping device configured to attenuate pressure pulsation of brake oil discharged according to a driving of a pump, wherein the damping device includes a sleeve fixed to a bore that is connected to a discharge end of the pump and having an opened one side, a damping piston slidably installed inside the sleeve, and an elastic member provided inside the sleeve and configured to elastically support the damping piston, and wherein a slot having a width which is varied is formed at an inner circumferential surface of the sleeve in a direction in which the brake oil flows so that a variable orifice is formed between the damping piston and the sleeve.

Abstract: A dielectric elastomer transducer comprising a first and second ends and first and second electrical terminals connected to the respective first and second ends of the dielectric elastomer transducer is provided. A system also includes a substrate, a conductive flexure with one end attached to the substrate and another end configured to receive a load. A first electrical connector pin is attached to the flexure to receive the first electrical terminal and a second electrical connector pin is attached to the substrate to receive the second electrical terminal. Another system also includes a living hinge flexibly coupling two separate substrates, where at least one of the substrates is movable in response to energizing the dielectric elastomer transducer.

Abstract: A hydraulic brake having a master unit, a slave unit, and a hydraulic line. The hydraulic line is filled with a hydraulic fluid and connects the slave unit to the master unit. Further, the hydraulic line has a continuous internal cross-section reduced in at least one longitudinal portion thereof. A method for the installation of a hydraulic brake having a master unit and a slave unit connected to a hydraulic line is also provided.

Abstract: A pedal simulator of the present invention is disclosed. According to an aspect of the present invention, the pedal simulator, which is connected with a master cylinder and receives pedal pressure of the driver and configured to provide a sense of a pedal for a driver, includes: a simulation chamber having one end connected with the master cylinder and the other end provided in the simulator block closed by a damping housing, and configured to store oil; a check valve pressurized by the piston, provided in the simulation chamber to be slideable, and slid; an orifice formed in the simulator block and allowing a flow of oil in the simulation chamber by the sliding check valve; and an accumulator configured to store the oil discharged through the orifice.

Abstract: The invention relates to a technique for operating a regenerative electrohydraulic motor vehicle brake system comprising a master cylinder that can be supplied with a hydraulic fluid from a reservoir, an electromechanical actuator for actuating a piston accommodated in the master cylinder and a stop valve provided between the master cylinder and the reservoir. According to an aspect of this technique, the method comprises the step of controlling the electromechanical actuator when the stop valve is closed to generate a hydraulic pressure on a wheel brake that is fluidically connected to the master cylinder. The method further comprises the step of activating a regenerative brake operation and of controlling the stop valve to open, the master cylinder remaining fluidically connected to the wheel brake and the electromechanical actuator being controlled to maintain the hydraulic pressure on the wheel brake at least to some extent.

Abstract: A drive assist device includes a driver state detection unit that outputs an emergency evacuation start signal, an consent confirmation unit that inquires of the driver, whether or not emergency evacuation control to stop a vehicle at a safe position regardless of a driving operation of the driver is permitted and receives a reply with respect to the inquiry from the driver, and a control unit that performs the emergency evacuation control when the reply which permits the performing of the emergency evacuation control is received from the driver by the consent confirmation unit. The control unit alleviates conditions for performing a preventive drive assist in which the risk for the traveling of the vehicle is avoided during a period from the time of receiving the emergency evacuation start signal to the time of receiving the reply of permitting the performing of the control by the consent confirmation unit.

Abstract: A hydraulic block for a slip-controlled vehicle brake system has a plurality of receptacles configured to receive hydraulic components, such as solenoid valves, hydraulic accumulators, hydraulic pumps, and gear pumps, and includes connectors for external components of the vehicle brake system, and facilitates a flat hydraulic block.

Abstract: Disclosed is a method for determining the axle load of a vehicle (10) having at least two tires on an axle. During cornering, the axle load is determined from a difference between wheel speeds at a wheel on the inside of the bend and wheel speeds at a wheel on the outside of the bend and by taking into account the lateral acceleration and track width.

Abstract: Disclosed herein is a variable pedal feeling adjustment device. A pedal simulator includes a simulator block formed with an oil hole at an upper portion thereof which is connected to a master cylinder to receive hydraulic pressure caused by pedal effort of a driver and a bore which communicates with the oil hole, a first reaction unit and a second reaction unit arranged in series in the bore and configured to be pressurized sequentially by pedal effort, and a damping housing configured to support the second reaction unit and installed to a lower portion of the bore while being restricted in rotation. An actuator includes a spindle screw-coupled to the damping housing and a motor connected to the spindle to supply rotational force to the spindle. The damping housing is moved linearly and changed in position by forward and backward rotation of the spindle.

Abstract: A brake control system and method that include a master cylinder that transmits braking hydraulic pressure to a wheel and a hydraulic power unit that supplies hydraulic pressure to the master cylinder to produce the braking hydraulic pressure transmitted to the wheel. A push rod is operated according to a brake pedal operation and a push rod cylinder is formed for the push rod to perform reciprocal motion in the push rod cylinder. A reaction force producer supplies hydraulic pressure to the push rod cylinder to produce reaction force against the push rod operation. A solenoid within the reaction force producer is operated by electric power to produce the reaction force. A pedal stroke sensor detects a brake pedal stroke and a brake control unit connected to the hydraulic power unit, the reaction force producer, and the pedal stroke sensor, operates the hydraulic power unit and the reaction force producer.

Abstract: According to the present invention, limited electric power is consumed so as to achieve long-lasting use of electric power during brake control with the use of an auxiliary power supply source when there is a malfunction of a vehicle power supply source. In addition, a brake control device for ensuring responsiveness at the beginning of braking or when emergency braking is necessary is provided. The brake control device of the present invention is a brake control device for detecting electric signals generated depending on the degree of brake-pedal operation and calculating the driver's demanded braking force based on the electric signals so as to generate the demanded braking force, which comprises an auxiliary power supply source for supplying electric power to the brake control device when there is a malfunction of a vehicle power supply source and controls braking depending on the charged capacity of the auxiliary power supply source.

Abstract: In a brake control system, a power supply portion supplies a voltage to a plurality of actuators. When a first actuator is supplied with a voltage equal to or higher than a first minimum operating voltage from the power supply portion, the first actuator operates to perform a first function. When a second actuator is supplied with a voltage equal to or higher than a second minimum operating voltage from the power supply portion, the second actuator performs a second function. The first minimum operating voltage and the second minimum operating voltage are set to be different from each other by a predetermined value so that the first actuator and the second actuator stop operating in a predetermined sequence with a decrease in the supplied voltage.

Abstract: Exemplary embodiments of the present invention relate to an electronic hydraulic brake device, including: a pedal cylinder configured to generate an oil pressure by a pressure of a pedal; a master cylinder configured to generate the oil pressure by sensing the pedal; wheel cylinders configured to be each mounted at a plurality of wheels and provide a braking force to the wheels; a storage configured to store a fluid; a mixing circuit configured to connect the pedal cylinder to some of the wheel cylinders, and communicate with the storage and the master cylinder; a master circuit configured to connect the master cylinder to the wheel cylinder and communicate with the storage; and a hydraulic compartment configured to connect the mixing circuit to the master circuit and limit a movement of the fluid.

Abstract: A solenoid valve. In a solenoid section forming part of the solenoid valve, a sleeve is provided on the inner circumferential side of a bobbin around which a coil is wound. This sleeve is formed from magnetic material and includes a cylindrical section and a flange section formed at a lower end of the cylindrical section. At an upper end of the cylindrical section, a tapered section is formed in which an outer circumferential face is recessed in the radially inward direction. The tapered section is arranged facing and in close contact with the outer circumferential face of a fixed core such that the magnetic flux density in the tapered section increases when the solenoid section is excited.

Abstract: A method for operating a brake assist device for a vehicle and a brake assist system for carrying out the method involve effecting an assist function, in the absence of driver action, in a plurality of escalation stages on the basis of a distance of the vehicle from an object located in front of the vehicle. A warning indication is generated as an assist function and/or a braking process of the vehicle is initiated automatically. A road on which the vehicle is being driven is classified, and the execution of the assist function is permitted or prevented on the basis of the classification.

Abstract: A vehicle braking system includes a master cylinder for producing an upstream hydraulic pressure corresponding to an operation given to a brake operation part, a shut-off valve provided between the master cylinder and a wheel cylinder, a hydraulic-pressure source for producing a downstream hydraulic pressure between the shut-off valve and the wheel cylinder in a close instruction receiving condition of the shut-off valve, and a controller for setting a target value of the downstream hydraulic pressure based on an operation amount and controlling the downstream hydraulic pressure based on the target value. According to the vehicle braking system, a driver is prevented from feeling discomfort through a brake operation without an increase in a power consumption of a shut-off valve provided between the master cylinder and the wheel cylinder.

Abstract: Aircraft hydraulic parking architecture, including a brake with a wheel braking hydraulic actuator, a pressure source (Alim) of high-pressure fluid, a normal braking hydraulic circuit (C1) including at least pressure control servo valve with a supply port (P) connected to the pressure source (Alim), a return port (R), a utilization port (U) connected to the actuator, the brake architecture further including a parking hydraulic circuit (C2) including a parking brake valve (PkBV) having an outlet port (Ps1) selectively connected either to the pressure source (Alim) or a low-pressure return circuit (CR). The outlet port (Ps1) of the parking brake valve (PkBV) is connected to the return port (R) of the pressure control servo valve.

Abstract: A brake system and method for operating same for a vehicle having a master brake cylinder, a brake medium reservoir, a first wheel brake cylinder, into which a first brake medium volume is displaceable from the master cylinder, a second wheel brake cylinder, into which a second brake medium volume is displaceable from the master cylinder, and a pump, which is hydraulically connected to the brake medium reservoir, the first wheel brake cylinder being hydraulically connected to the pump via a first non-return valve and the second wheel brake cylinder being hydraulically connected to the pump via a second non-return valve so that the pump can pump a third brake medium volume from the brake medium reservoir through the first non-return valve into the first wheel brake cylinder and a fourth brake medium volume from the brake medium reservoir through the second non-return valve into the second wheel brake cylinder.

Abstract: Embodiments disclose a vehicle brake fluid pressure controller. The controller includes: a normally-open proportional solenoid valve provided in a hydraulic passage extending from a hydraulic pressure source to a wheel brake; a normally-closed solenoid valve provided in a hydraulic passage extending from the wheel brake to the hydraulic pressure source; an antilock brake control module configured to perform an antilock brake control for suppressing the locking of a wheel by performing a pressure increase control, a pressure decrease control and a pressure holding control for a hydraulic pressure of the wheel brake, using the normally-open proportional solenoid valve and the normally-closed solenoid valve.

Abstract: A braking device including a dissipative braking system, an electric braking system, and a first actuating device combined with the dissipative braking system. A second actuating device is combined with the electric braking system and a position sensor is combined with the second actuating device. This second actuating device is designed to drive the first actuating device after a non-zero travel from its inactive position, and the sensor is designed to drive the electric brake system according to the displacement travel of the second actuating device from its inactive position.

Abstract: A service brake device of a vehicle, including at least one ABS pressure control valve which is controlled for slip-regulated braking by an electronic control unit, has at least one inlet valve and one outlet valve and is arranged upstream of a pressure medium actuated brake cylinder, a pressure medium line which supplies the ABS pressure control valve with pressure medium and into which a pressure controlled by a valve device arranged upstream of the ABS pressure control valve is feedable, wherein the valve device feeds a pressure derived from a reservoir pressure of a pressure medium reservoir into the pressure medium line as a function of an activation by the electronic control unit.

Abstract: The invention relates to a hydraulic brake system comprising a master brake cylinder the at least one working chamber of which is connected to the wheel brakes of the vehicle via at least one hydraulic line, the brake piston of at least one wheel brake being adjustable by a negative pressure in the hydraulic lines to produce a brake clearance.

Abstract: A method for operating a hydraulic vehicle braking system that has an anti-lock control unit is disclosed. The system includes a brake master cylinder having an electromechanical brake booster. As the pressure level of the vehicle braking system decreases during an anti-lock control, in which all vehicle wheels are controlled, the boosting force of the brake booster is reduced in an anti-lock control of this type.

Abstract: A slave cylinder includes a first input port provided to a first slave hydraulic chamber and which is connected to a master cylinder and is selectively cut off from the master cylinder by a first shut-off valve; a second input port provided to a second slave hydraulic chamber and which is connected to the master cylinder and is selectively cut off from the master cylinder by a second shut-off valve; a first atmosphere port formed in a first back chamber disposed in rear of the first slave hydraulic chamber and which moves together with a first piston; a second atmosphere port formed in a second back chamber disposed in front of the first slave hydraulic chamber and which moves together with a second piston; and a restricting means to restrict the second piston. The second atmosphere port is disposed in the vicinity of the restricting means.

Abstract: A pneumatically-operated vehicle brake system has a first compressed air line in which compressed air at a controllable service brake pressure can be provided. Membrane parts of brake cylinders can be ventilated by the service brake pressure for a service brake function. A parking brake device includes a second compressed air line in which compressed air can be provided at a parking brake pressure electro-pneumatically. Brake cylinder spring brake parts can be ventilated by compressed air at the service brake pressure to provide a parking brake function. The parking brake device also has a ventilation inlet by which the second compressed air line can be ventilated to increase the parking brake pressure, and a first ventilation outlet by which the second compressed air line can be ventilated to reduce the parking brake pressure. The second compressed air line can be pneumatically connected to the first via the first ventilation outlet.