A method and device for regeneration of an adsorption air dryer having at least two desiccant-filled drying vessels connected in parallel, wherein a humid compressed-air stream generated by a compressor flows through one of the drying vessels in a drying phase and a dry compressed-air stream flows through the other drying vessel, for the purpose of dewatering the desiccant, in a simultaneous regeneration phase, wherein a valve arrangement is provided for switching the drying vessels alternately between drying phase and regeneration phase during normal operation, wherein the control mechanism are provided for implementing a post-regeneration phase, which control mechanism initiates a further flow through the drying vessel with dry compressed air for complete regeneration and also a flow through the other drying vessel; with dry compressed air for complete regeneration, so that, upon the next start of operation of the adsorption air dryer, operation commences with fully regenerated drying vessels.

A system for use in connection with a wheel torque generating component in a heavy-duty vehicle. The system comprises a fluid conduit, a compressor configured to provide a pressurized air flow through the fluid conduit, a mass flow adding arrangement configured to add a fluid to the pressurized air flow in the fluid conduit, thereby increasing the mass flow of the pressurized air flow, and a flow directing device arranged downstream of the mass flow adding arrangement and configured to direct the pressurized air flow, including the added fluid, from the fluid conduit to the wheel torque generating component so as to control the temperature of the wheel torque generating component. The invention also relates to a method for use in connection with a wheel torque generating component in a heavy-duty vehicle.

The present invention relates to an oil tank ventilation device for a hydraulic brake unit of a tramcar, comprising a vent plug, a sealing ring, a gas guide hole and a gas guide pipe; the gas guide hole is a through-hole structure arranged at an upper end inside an integrated valve block; the communications of electrical element protection case, integrated valve block and the oil tank are realized by the gas guide pipe stretched into an air chamber of the oil tank and by the vent plug configured in the electrical element protection case. When the surface of the oil tank is covered with ice or snow, the rain or snow can be effectively prevent from falling on the vent plug body and the driving safety of the train is ensured.

A brake system comprises a first electrohydraulic open-loop and closed-loop control unit. The first electrohydraulic control unit comprises a master brake cylinder actuatable by a brake pedal; a first electrically controllable pressure-providing device; and an electrically controllable pressure-modulating device sets wheel-specific brake pressures for the wheel brakes. The electrically controllable pressure-modulating device has at least one electrically actuatable inlet valve for each wheel brake. A first pressure-medium reservoir for supplying the first electrohydraulic control unit with pressure medium is arranged on the first electrohydraulic control unit. The brake system also comprises a second electrohydraulic open-loop and closed-loop control unit, which comprises a second electrically controllable pressure-providing device for actuating at least some of the wheel brakes and electrically actuatable valves. A second pressure-medium reservoir for supplying the second electrohydraulic control unit with pressure medium is provided, the second pressure-medium reservoir being arranged on the second electrohydraulic control unit.

Provided are a connection structure and system of an integrated brake device for a rail vehicle. The connection structure of an integrated brake device for a rail vehicle includes a brake valve, a dust collector, an intermediate body, an air cylinder, a support assembly and a connection assembly. The intermediate body is of a plate-type structure, the brake valve and the dust collector are mounted on one side of the intermediate body, the air cylinder is connected to the intermediate body by means of the connection assembly, the air cylinder is mounted on the other side of the intermediate body, and the support assembly is located between the air cylinder and the intermediate body. The connection structure of an integrated brake device for a rail vehicle has a simple and compact structure and saves on space. Brake components are integrated on the intermediate body, and the connections between the brake components and between the whole integrated brake device and an external mounting base are all secure and reliable.

Provided is a pneumatic system for a vehicle, in particular a commercial vehicle. The system comprises a compressor, an air dryer cartridge, and a purge valve. The purge valve is protected by a filter. The filter is arranged in a housing and covers an inlet of an air channel formed in the housing which connects the inlet and the purge valve.

An electropneumatic parking-brake valve unit for an electronically controlled pneumatic brake system has a first supply connection to a compressed air source. A spring brake connection connects to a spring brake cylinder of a vehicle. A parking-brake valve arrangement has a bistable valve switchable between switching states wherein a spring brake pressure can be controllable in dependence upon the switching state. A pneumatically switchable holding valve has a holding-valve connection for a first control pressure and the holding valve is connected between the first supply connection and the bistable valve. The holding valve is under a spring load into a first switching position wherein the bistable valve is connected to a deaerator. The bistable valve switches into a second switching position when the first control pressure exceeds a first threshold value. The bistable valve is connected to the first supply connection.

The present disclosure provides a compressed air processing system of which the operation of supplying compressed air and the regeneration operation can be efficiently controlled by an electronic control unit. In particular, the present disclosure is characterized in that the pressure of a regeneration sequence valve installed in a regeneration line is increased over a set pressure by controlling a valve, which is electronically controlled, to switch, so the opening time of the regeneration line is delayed in comparison to the opening time of an unloader valve, whereby regeneration efficiency is improved.

The action of braking generates massive amounts of heat. It is known to install brake ducts 9, which channel air from the front of the vehicle to the brake discs 17. The air introduced by the brake ducts 9 is at an ambient temperature, much cooler than the brakes, and the airflow is closer to laminar (rather than turbulent) and continuously moves the hotter air away. This allows the brakes to shed heat at a faster rate and dramatically lowers the average operating temperature. The present invention provides a vortex tube 3 for supplying a stream of air 5 at a temperature substantially different from ambient temperature into brake ducts 9 to improve efficiency of the brake ducts 9.

An air supply system for a rail vehicle that includes electrical consumers, such as a compressor, an air dryer, a valve or the like, and a converter coupled to a power supply of the rail vehicle, wherein the air supply system adjusts the voltage provided by the power supply to an operating voltage of at least one electrical consumer, wherein the converter is associated with at least two of the plurality of electrical consumers in such a way that the converter can control, particularly in a closed-loop manner, and/or monitor the operation of the at least two of the plurality of electronic consumers.