A valve for applying an emergency brake of a rail vehicle includes a valve housing, an actuation member to be activated by a user, an actuation rod connecting the actuation member with a valve head, wherein the valve head is adapted to abut on a valve seat, a guidance for guiding the actuation rod being provided within the valve housing, and a first spring adapted to push the valve head against the valve seat, wherein the actuation rod includes a first groove and a second groove, and wherein a first following member is provided between the actuation rod and the guidance, being adapted to stably rest in the first groove or the second groove.

A pneumatic brake for a rail vehicle, wherein friction linings are pressed against friction partners during a braking process via pneumatic pressure from a brake air container that is fed from a compressed air supply, where the filling and the outflow of compressed air from the brake air container occurs via a flow limiting device.

A redundancy module for a pneumatic braking system of a vehicle, in particular a commercial vehicle, with spring brakes on at least one axle, includes: a parking brake pressure port for receiving a parking brake pressure; a spring brake port for providing a spring brake pressure; a redundancy pressure port for receiving a redundancy pressure; and a piston assembly, with a reverse piston having a parking brake pressure control surface, a spring brake control surface, and a redundancy pressure control surface. The parking brake pressure acting on the parking brake pressure control surface causes a control of the spring brake pressure in a same direction. The redundancy pressure acting on the redundancy pressure control surface causes an inverse control of the spring brake pressure.

A method for specifying switching parameters of a solenoid control valve in a braking system of a vehicle includes stipulating a test vehicle acceleration and ascertaining at least two test pulse sequences. The test pulse sequences are each ascertained on the basis of the stipulated test vehicle acceleration and on the basis of switching parameter default values for the respective solenoid control valve, and the test pulse sequences have actuation pulses and adjoining nonactuation pulses. During an actuation pulse an activation of the respective solenoid control valve and during a nonactuation pulse a deactivation of the respective solenoid control valve takes place. The method further includes actuating the respective solenoid control valve using the at least two test pulse sequences in order to cause at least two test braking operations, wherein the respective test pulse sequence causes an alteration of a braking pressure at a service brake.

An adapter assembly for an electronically controlled pneumatic (ECP) manifold system includes a housing having a mounting face that includes a plurality of ports. The housing also has a brake cylinder passageway, a reservoir passageway, and a brake cylinder exhaust passageway that are in fluid communication with the ports. The adapter assembly also includes an adapter valve configured to be in fluid communication with the brake cylinder passageway, the reservoir passageway, and the brake cylinder exhaust passageway. The adapter valve has a first position where the brake cylinder passageway and the reservoir passageway are in fluid communication while the brake cylinder passageway is isolated from the brake cylinder exhaust passageway. The adapter valve also has a second position where the brake cylinder passageway is isolated from the reservoir passageway while the brake cylinder passageway is in fluid communication with the brake cylinder exhaust passageway.

One embodiment of a braking system for vehicles may have a first brake group and a second brake group. The first and second brake groups may have respective braking devices and electro-hydraulic actuator devices operatively connected to the first braking device. The system may also have an interconnection branch between first and the second hydraulic actuation ducts, provided with a control valve. The system may also have at least one control unit that may be programmed to actuate the control valve to control the ducts and fluidly connect the ducts.

The present disclosure relates to a solenoid valve. The solenoid valve includes an armature provided inside the sleeve, a plunger configured to ascend and descend by the operation of the armature, an elastic member configured to press the plunger toward the armature, a magnet core having a through hole in which the plunger and the elastic member are provided and forming an inner space in a longitudinal direction, a valve seat provided in the inner space and on which an orifice penetrating in an axial direction is formed to be opened and closed by the plunger, and a plurality of flow resistance members each including a ring body interposed between the valve seat and the magnet core to generate a flow resistance of a braking fluid, and a slot formed at one side of the ring body to penetrate through the ring body so that the braking fluid passes therethrough.

An off-road vehicle includes a driveline, a control system, and a braking system. The driveline provides driveline power and driveline brake power to a first tractive assembly and/or a second tractive assembly. The control system stores vehicle information, determines driving instructions based on environment data, and determines speed references for tractive elements of the first and second tractive assemblies based on the driving instructions and the vehicle information. The braking system includes brakes and a braking subsystem. The brake subsystem operates the brakes to provide brake power to one or more components of the first and/or second tractive assemblies. The brake controller controls the brakes to selectively provide the brake power and the control system controls the driveline to selectively provide the driveline power and the driveline brake power based on current speeds of the tractive elements and the speed references to accommodate the driving instructions.

The disclosure relates to a valve assembly, comprising a valve body, in which a fluid channel is formed that connects a fluid inlet to a fluid outlet, wherein a preload force is applied to a closing body, which is movably mounted in the fluid channel, in the direction of a valve seat formed in the valve body, a fluid force acting on the closing body against the preload force in order to open the valve seat. The closing body is guided axially and/or radially by at least one guide ball, the guide ball being arranged between the closing body and a lateral boundary of the fluid channel.

A set and release retainer valve assembly of an air brake system engages and releases an air brake while retaining a designated pressure within a brake cylinder. The pressure is retained within the brake cylinder to generate a higher brake cylinder pressure on a subsequent brake application and/or prevent movement of the vehicle system after release of the air brake system. The air brake is subsequently re-engaged to re-set the retaining valve assembly and exhaust the designated air pressure out of the brake cylinder, where the air brake of the vehicle system is released to permit the movement of the vehicle system after re-setting the retaining valve assembly.