Abstract: A cuboidal housing block, particularly for a hydraulic modulator to generate, control or regulate a hydraulic pressure in a brake circuit of an electronically controllable power-brake system. Housing blocks have, inter alia, a mounting side which is provided for mounting an electronic control unit. To save on weight and material, a recess is provided on one long side of the housing block, the recess being in the form of a groove that is closed on the sides and otherwise open toward the surroundings of the housing block. The recess is bounded lengthwise by bars, an outer flank of these bars transitioning seamlessly into the mounting side and enlarging its area.

Abstract: A pump assembly for generating pressure in a brake circuit of a controllable power brake system of a motor vehicle. The pump assembly has, as a pressure generator, a piston-cylinder unit in which a piston is actuated with the aid of a piston drive. The piston drive converts a rotational movement, with which a nut of this piston drive is driven, into a translatory movement of a spindle, which is in turn connected to the piston in a rotationally fixed manner. The piston is a steel component in which a plastic deformation at a piston head forms a device for connecting the spindle to the piston in a rotationally fixed manner.

Abstract: A brake actuating device of a vehicle brake system has a pump housing which has a housing opening surrounded by a wall. The housing opening includes a housing axis along which a piston is to be accommodated in the housing opening in an axially displaceable manner. The housing opening further has a guide region in which a guide element to be arranged between the wall and the piston is to be accommodated. The brake actuating device further has a projection projecting from the wall into the housing opening. The projection is provided axially next to the guide region in the housing opening. The guide element is placed axially on the projection.

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: A cuboidal hydraulic block of a hydraulic power unit of a slip-controlled power vehicle braking system includes a power cylinder borehole, a receptacle for a pedal travel simulator in parallel to the power cylinder borehole, perpendicularly through two large sides of the hydraulic block, and perpendicularly to a master brake cylinder borehole. The master brake cylinder borehole extends, in parallel to an upper transverse side, from one longitudinal side of the hydraulic block to an opposite longitudinal side of the hydraulic block. In an intended installation and usage position, an electrical plug connection is situated beneath a lower transverse side of the hydraulic block.

Abstract: A hydraulic unit for an electronically slip-controllable power brake system of a motor vehicle. A cuboidal housing block is equipped with components for generating a braking pressure and for open- or closed-loop control thereof. On a motor side of the housing block, a motor is fastened to drive a braking pressure generator, while on a reservoir side, a reservoir is provided to supply the vehicle brake system with a pressure medium. The reservoir has at least one protruding fastening peg, which projects into a recess open to the outside on the housing block. Using a retaining pin inserted into a transverse bore of the housing block and passing through this recess, the reservoir is anchored to the housing block. The transverse bore, open on the motor side of the housing block, is in a flat portion in which a pin head of the retaining pin lies without the pin head protruding axially beyond a motor side of the housing block.

Abstract: A stroke of a piston of a pedal travel simulator is limited via a spring ring that is inserted into a circumferential groove in a cylinder of the pedal travel simulator. The spring ring relieves the load on a cover of the pedal travel simulator that closes the cylinder of the pedal travel simulator.

Abstract: Boring of a hydraulic block of vehicle power braking system.

Abstract: A non-return valve having a valve opening spring is positioned between an unpressurized brake fluid reservoir and a brake master cylinder of a hydraulic vehicle power brake system having an externally-powered brake pressure generator. The non-return valve allows for a flow-through in the direction of the brake master cylinder and blocking against a return flow from the brake master cylinder into the brake fluid reservoir starting at a counterpressure in the brake master cylinder specified by the valve opening spring.

Abstract: A pivot bearing of a ball screw of a power brake pressure generator for a hydraulic vehicle braking system is fastened at a hydraulic block with the aid of a sleeve that has an internal circumferential edge, which engages from above with the pivot bearing on a front face facing away from the hydraulic block. The sleeve has a flange that is caulked in an annular step in the hydraulic block.

Abstract: A power piston in a power cylinder borehole of a hydraulic block of a hydraulic power unit of a hydraulic power vehicle braking system is only guided radially in an axially delimited guide section. The power cylinder borehole is configured with a larger diameter axially outside the guide section. A brake fluid channel extends through the guide section up to an opening of a brake fluid line.

Abstract: A hydraulic block for a hydraulic power unit of a hydraulic, slipped-controlled power vehicle braking system. A power piston of an electromechanical power brake pressure generator in a power cylinder borehole of the hydraulic block is guided radially in the power cylinder borehole with the aid of a guide bushing.

Abstract: A drilling of a hydraulic unit of a service brake assembly of a vehicle hydraulic-power brake system.

Abstract: A hydraulic block for a hydraulic unit of a hydraulic power vehicle braking system that includes a slip control. The hydraulic block includes in an upper side a plug connection for a connecting nipple of a brake fluid reservoir. A check valve is integrated into the plug connection.

Abstract: A cuboidal hydraulic block of a hydraulic unit of a hydraulic power vehicle braking system. The cuboidal hydraulic block is for fastening optionally with one fastening side or an opposite fastening side to a splashboard of a motor vehicle, so that the hydraulic unit may be housed optionally with an electric motor on a right side or a left side of the hydraulic block in an engine compartment of the motor vehicle.

Abstract: An electrohydraulic power brake system for a motor vehicle traveling autonomously. An auxiliary brake unit is connected to a service brake unit in such a manner, that in the event of failure of the service brake unit, the vehicle brake system may be operated by the auxiliary brake unit. In order to be able to build up a brake pressure rapidly, using the auxiliary brake unit, in the case of cold and viscous brake fluid, as well, check valves, via which hydraulic pumps of the auxiliary brake unit are connected to a brake fluid reservoir of the service brake unit, are provided in the service brake unit.

Abstract: Displacement of a piston of a power brake pressure producer of a hydraulic assembly of a hydraulic vehicle brake system by an electric motor, via a cycloidal gear and a sliding screw gear having a trapezoidal thread.

Abstract: A hydraulic block of a slip regulation system of a hydraulic external force vehicle brake system that has a master brake cylinder bore and forms a master brake cylinder. In order to prevent a hard impact of a master brake cylinder piston on an end stop when the master brake cylinder is released, in particular when there is a sudden release, for example when the driver's foot slips off the brake pedal, the present invention provides a hydraulic return flow damper that is integrated in the master brake cylinder piston.

Abstract: A pedal travel simulator for a hydraulic powered vehicle braking system. In order to realize a “jump-in,” a first piston spring is provided that, after a first displacement path, loads a simulator piston of the pedal travel simulator with a spring force that is higher by a multiple than that of a second piston spring that loads the simulator piston during the first displacement path.

Abstract: A semicircular rotation prevention part for preventing rotation of a piston of a hydraulic unit of an externally-powered hydraulic vehicle brake system. The rotation prevention part is positioned in a congruent widened section at a mouth of a cylinder bore of a hydraulic block of the hydraulic unit and includes axially parallel rotation prevention grooves on its inner circumference, with which shoulders projecting outwards from the piston engage.