Abstract: A housing for an electropneumatic modulator for an electropneumatic brake system for a vehicle, includes: an electric chamber configured to receive at least one electrical and/or electronic component of the electropneumatic modulator from a first side of the housing; and a receptacle chamber which is arranged opposite the electric chamber and is configured so as to receive a relay piston and a guide device for guiding the relay piston from a second side, opposite the first side, of the housing, in which the housing is formed in one piece. Also described are a related electropneumatic modulator and a method for making the electropneumatic modulator.

Abstract: A method for brake control of a vehicle combination (1) having a tractor vehicle (2) and a trailer vehicle (3) with an electrically controllable trailer control valve (9) changes an assigned trailer control valve characteristic curve (p_normal) stored in an electronic controller (6) for normal operation of the vehicle combination (1) or replaces it with a trailer control valve characteristic curve for special operation (p_special) in the event that a special operation of the vehicle combination (1) is detected or predicted, which special operation, under consideration of relevant parameters, differs from the normal operation or is evaluated as being potentially impermissible.

Abstract: An electropneumatic parking brake module includes a supply port configured to connect a compressed air supply, a spring brake actuator port configured to connect at least one spring brake cylinder, and a trailer control port, an inlet-outlet valve unit configured to control a spring brake pressure, and an electropneumatic pilot control unit configured to control at least one control pressure at the inlet-outlet valve unit and configured to perform a trailer control position function. The electropneumatic pilot control unit includes a 3/3-way valve that has a first switching position in which the at least one control pressure is controlled, a second switching position in which the trailer control position function is carried out, and a third switching position in which the inlet-outlet valve unit and the trailer control port are connected to a vent.

Abstract: A controller sets a target hydraulic pressure of a master cylinder based on the operation amount of a brake pedal, and controls the action of an electric motor so that a master cylinder hydraulic pressure attains the target hydraulic pressure. A brake characteristic representing a relationship between a motor rotation position detected by a resolver and the master cylinder hydraulic pressure as detected by the hydraulic pressure sensor is stored and updated. When the hydraulic pressure sensor is abnormal, a target motor rotation position corresponding to the target hydraulic pressure is set using the updated brake characteristic, and the action of the electric motor is controlled. The electric motor is controlled based on the updated brake characteristic, and hence fluctuations in the vehicle deceleration with respect to the brake operation can be suppressed and a sense of discomfort for the driver can be alleviated.

Abstract: An electromechanical brake system and an associated method with a failsafe energy supply, have a first to fourth brake module with at least one control unit and brake actuation unit. In order to supply the modules with electrical energy, the control unit and the brake actuation unit are each connected to at least one main energy supply unit via independently fed lines. In order to supply additional electrical energy to the modules, a first emergency energy supply unit is connected to the control unit and brake actuation unit of the first and fourth brake module and a second emergency energy supply unit is connected to those of the second and third brake module, respectively via additional independently fed lines, wherein the selection of the energy supply unit is made via switches actuated at least partially separately from one another via at least one central control system.

Abstract: Apparatus for controlling a pneumatic brake system that includes an electronic control device to limit the maximum brake effort even when an external electrical power supply to the braking system is not present.

Abstract: An engine-driven vehicle/implement coupling system includes a mechanical coupling and one or more electronic and/or hydraulic connections. A coupling condition monitoring system includes one or two electronic control units, sensors for sensing a coupling condition of the electronic and/or hydraulic connection, and a sensor on the mechanical coupling for generating a signal representing a coupling condition of the mechanical coupling. Sensor signals are transmitted to the electronic control unit which, in response prevents erroneous coupling or uncoupling and prevents drive-away of the vehicle or implement.

Abstract: In order to achieve, in the case of a spring brake cylinder having an emergency release device, particularly for rail vehicles, and having a spring piston (8) which can be moved axially within a housing (1) and which, on the one hand, can be moved by means of an accumulator-type spring (9) for operating the brake in the event of a pressure drop and, on the other hand, can be moved by a spring pressure chamber (10), which can be acted upon by a pressure medium, for releasing this spring brake, as well as having a normally locked, not self-locking threaded screw drive (12) which is arranged in the flux of force between the spring piston (8) and an output-side piston rod (5) and which can be manually unlocked by way of a latch (13) assigned to the emergency release device, in order to be able to release the spring brake without any pressure medium, a reliable functioning of this emergency brake device in a simple manner, it is suggested that an outer-radial sliding surface (19) for the latch (13) held in contact

Abstract: A pneumatic system serves as a backup to the electronic system that normally provides load compensation on a railcar truck during both service and emergency applications of the brakes. The pneumatic system compensates for the load railcar bears during service and emergency brake applications whenever the electronic load compensation system fails due to a loss of power or other electrical failure. Ideal for railcar trucks equipped with brake pipe controlled brake equipment, the pneumatic system provides load compensation through use of a four-port variable load valve in combination with a low complexity MC-30A-1 control valve.

Abstract: A braking force control valve for an air brake system. The air brake system includes an air compressor for generating compressed air, an air tank for storing the compressed air supplied from the air compressor, an air bellows connected to the air tank, a load sensing valve connected to the air bellows to equilibrate braking force applied to front and rear wheels of the vehicle, a brake valve for operating the load sensing valve, a brake chamber for supplying braking force by receiving the compressed air from the air tank when the brake valve is operated. The braking force control valve comprises a valve body provided with a first port connected to the air tank, a second port connected to the air bellows, a third port connected to the load sensing valve, and a valve mechanism for selectively connecting the third port to either the first port or the second port according to a height variation between a body and an axle shaft of the vehicle.