The present disclosure relates to an electronic brake system and an operation method thereof. The electronic brake system prepares various valves provided on flow paths, that connect components and a reservoir, in a closed state, and then switches the various valves to an open state after a hydraulic pressure of a pressure medium is formed by a hydraulic supply device.

A pneumatic valve apparatus for a compressed air device, including: a pneumatic solenoid valve having a housing body with a supply channel, a consumer channel and a vent channel, wherein the housing body surrounds a valve chamber, in which a valve body can be moved along a valve axis counter to the force of a valve spring by an actuator relative to a vent valve seat leading to the vent channel and relative to a supply valve seat leading to the supply channel, wherein in a first position, the valve body opens the valve chamber and the vent valve seat leading to a vent channel, and, in a second position, opens a supply channel leading to the supply valve seat and the valve chamber, wherein the housing body comprises a diffuser, which adjoins the vent valve seat leading to the vent channel.

In a method for controlling a hydraulic brake system in a vehicle, wherein the hydraulic brake system is equipped with a hydraulic pump, the hydraulic pump is activated to hold the vehicle at rest and brake fluid is conveyed via open inlet valves to the wheel braking device of a first vehicle axle. The inlet valves on wheel braking devices of a second vehicle axle are at least partially open in response to a change in the brake pressure requirement in the brake system, and at the same time the outlet valves on said wheel braking devices remain closed while the vehicle is being held at rest.

A foot brake module of an electropneumatic brake system of a motor vehicle has at least two pneumatic brake circuits. The foot brake module is operated by a brake pedal and has a pneumatic section with a pneumatic brake control valve and an electrical section with an electrical switch and at least one electronic travel sensor. The electrical switch is activated in a contactless manner. The foot brake module may have two travel sensors that each have a separate power supply and are connected to different electronic control devices.

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.

A manifold block of vehicle braking system and vehicle are provided. The manifold block of the vehicle braking system comprises a hydraulic unit body, a solenoid valve mounting hole for mounting a solenoid valve, a sensor mounting hole for mounting a liquid pressure sensor and a simulator accommodation part for installing the pedal simulator. The hydraulic unit body is provided with a solenoid valve mounting face. The solenoid valve mounting hole, the sensor mounting hole and the simulator accommodation part are all arranged on the solenoid valve mounting face.

A vehicle braking system includes a master cylinder. In a delivery line of the master cylinder there is a pressure transfer device, which generates a pressure in a hydraulic actuating line of a respective brake device following a fluid pressure communicated to a first inlet of the pressure transfer device from the delivery line and/or following a fluid pressure supplied to a second inlet of the pressure transfer device from an electrically-operated fluid pressure source. An electronic controller controls an enabling/disabling solenoid valve, and the electrically-operated fluid pressure source to create different operating modes of the system. The system does not include any vacuum-operated servo-assisting devices. The master cylinder is associated with a hydraulic device for adjusting the feeling on the brake pedal, in which a fluid pressure is generated that opposes the brake pedal actuation. The electronic controller controls the pressure in the device for adjustment of the feeling on the pedal.

The disclosure relates to a method for operating a hydraulic braking system for a motor vehicle with an electrified drive train. The braking system comprises a brake booster. First, a braking request is registered and it is determined that the braking request is to be met by pure recuperative braking. In addition, an input member of the brake booster is shifted in the direction of a pressure generation unit so that it assumes an actuation position corresponding to the braking request. From here, the input member is then shifted back from the actuation position in a direction away from the pressure generation unit for hydraulic pressure relief. A control unit designed to carry out such a method is also disclosed. A braking system comprising such a control unit is also presented.

An electronically controllable pneumatic brake system includes a service brake control module for controlling a first and a second service brake circuit, and a trailer control module with a trailer brake pressure connection point for connection to a trailer brake pressure coupling head. The trailer control module outputs a trailer brake pressure via the trailer brake pressure connection point. Upon a malfunction of the first and/or second service brake circuit, the first service brake pressure is controlled depending on the trailer brake pressure; and the second service brake pressure is controlled depending on the trailer brake pressure specified by the trailer control module; and/or the parking brake pressure is controlled directly or depending on the trailer brake pressure specified by the trailer control module. Upon a malfunction of the trailer control module, the trailer brake pressure is controlled depending on the first service brake pressure.

An axle valve module of a compressed air brake system includes a relay valve with a control pressure input connected to a control pressure line which can be connected via a changeover valve alternately to a brake pressure line conducting an introduced brake pressure or to a reservoir pressure line conducting a reservoir pressure. ABS inlet and outlet valves are each formed as a pressure-controlled diaphragm valve with assigned pilot valve, wherein the pilot valves are configured as cyclically controllable 3/2-way magnetic switching valves, A shut-off valve is arranged in the control pressure line of the relay valve, between the changeover valve and the control pressure input of the relay valve or the branch point of a control pressure line of the ABS valves, via which shut-off valve the control pressure present at the control pressure input of the relay valve can be locked in as required.