A compressed air brake device for a rail vehicle with a direct, electropneumatic brake has a brake control unit which has a brake control device with connected brake actuators and a brake pilot control pressure sensor connected to the brake actuators. An independent monitoring control unit is arranged in parallel to the brake control unit. The monitoring control unit has a monitoring control device with connected monitoring actuators and a monitoring pilot control pressure sensor. A monitoring pilot control pressure at the output of the monitoring actuators is closed-loop controlled using the monitoring pilot control pressure sensor. The higher pressure of a brake pilot control pressure and the monitoring pilot control pressure or, in the case of a fault of the brake control unit, the monitoring pilot control pressure can be relayed to the brake cylinder.

A method and device monitor and influence the thermal state of a friction brake system of a rail vehicle on the basis of a calculated or estimated predictive friction element temperature of at least one friction element of the friction brake system. The method detects at least one parameter which characterizes the current driving operation situation of the rail vehicle; calculates, estimates, or determines a first temperature component of the predictive friction element temperature based on the current driving operation situation of the rail vehicle; and takes into consideration a first temperature component while monitoring and influencing the thermal state of the friction brake system.

In a railway vehicle, a brake control device controlling a first brake device that presses a friction material against a wheel and a second brake device not using the friction material includes: a wheel load estimation unit estimating a wheel load-based on a wheel speed and a brake force applied to the wheel by the friction material; a friction surface state quantity estimation unit estimating a current friction coefficient of the friction material from a state of a friction surface thereof based on the wheel load, the wheel speed, and a brake force command, and outputting a mirror-surfacing signal indicating the friction surface is in a mirror-surfaced state when the friction coefficient is less than a first threshold value; and a brake control unit controlling operations of the first and second brake devices based on the brake force command and presence or absence of the mirror-surfacing signal.

The invention relates to a brake system of a rail vehicle having at least one pneumatic brake actuator, a pneumatic braking device for generating a brake pressure, an electro-pneumatic braking device for generating a brake pressure, and a controller. In the event of rapid, forcible, or emergency braking, the pneumatic braking device or the electro-pneumatic braking device provides a basic brake pressure, and the brake pressure is changed by the electro-pneumatic braking device, starting from the basic brake pressure provided, depending in particular on a load and/or a speed.

The invention relates to a method and to a system for putting into service a brake system having specified approval prerequisites, in particular wherein the brake system is a pneumatic and/or hydraulic braking system, in particular a pneumatic and/or hydraulic braking system of a rail vehicle, wherein the control data set for the brake system is set on the basis of a real reference operation and a virtual test operation in such a way that the specified approval prerequisites are achieved.

The apparatus comprises a sensor for generating a vehicle load signal, weighting devices designed to supply a weighted pneumatic pressure as a function of the load signal, and first and second braking control apparatus, both coupled to the weighting devices and comprising respective relay valves which supply at their outlets respective braking pressures, modulated as a function of said weighted pneumatic pressure, to respective braking actuators associated with the wheels of a respective axle or of a respective bogie of the vehicle. The weighting devices comprise an electro-pneumatic drive assembly which is interposed between pneumatic pressure supply means and the drive inlet of the relay valves and an electronic weighting control unit which controls the drive assembly as a function of the load signal, so as to modulate in a predetermined way the pressure at the drive inlet of the relay valves.

A braking force distribution method and system for multiple marshalling train compartments are provided. The method includes: determining a current train compartment of multiple target marshalling train compartments, calculating current axel loads of axels of the current train compartment, and distributing braking forces for the axels of the current train compartment in a positive correlation manner based on the current axel loads of the axels. The braking forces of the axels are distributed by using an axel load compensation technology. A braking force generated by an axle with a small axle load is reduced according to a load-decreasing amount of the axle load, while a braking force generated by an axle with a great axle load is increased according to a load-increasing amount of the axle load, so that the braking forces generated by the axles match the axle loads.

An electro-pneumatic braking system including a pneumatic pressure supply pipe, a generator for generating a vehicle load signal, a weighting system designed to supply a weighted pressure which defines a maximum braking pressure, limited as a function of the load signal, and braking control units connected to the weighting system and having a relay valve connected between the pipe and at least one brake cylinder, to cause the application to this cylinder of a controllable braking pressure, equal to or less than the weighted pressure. The weighting system includes an electro-pneumatic drive assembly, interposed between the pipe and the drive inlet of the relay valve and is connected to the pipe through a pressure limiter, and an electronic weighting control unit which controls this drive assembly as a function of the load signal, so as to modulate in predetermined ways the pressure at the drive inlet of the relay valve.

An electromechanical service and emergency braking actuator for a railway vehicle is described, comprising a safety unit arranged to regulate a first emergency braking control signal so as to indicate to first emergency braking energy release means to release the energy stored in first emergency braking energy storage means when an emergency braking request signal indicates a request for an emergency braking and a first electrical signal of actual braking force does not indicate, within a predetermined maximum delay time, a force value coinciding with a further emergency braking force value calculated by said safety unit or a force value that does not fall, within a predetermined maximum delay time, in a predetermined tolerance range including the additional emergency braking force value calculated by said safety unit. Electromechanical braking systems are also described.

A recognition system of a position of a mechatronic braking control device associated with a railway vehicle along a train is described. The recognition system includes a sustaining and fixing support installed on the railway vehicle, an identifying binary coding of the position along the train, and a mechatronic braking control device adapted to be fixed to the sustaining and fixing support and including an optical reading device arranged to detect the identifying binary coding. The mechatronic braking control device determines the position along the train according to the binary coding that is read by the optical reading device.