An air dryer apparatus is provided for a vehicle air brake charging system. The air dryer apparatus comprises an air dryer governor assembly. The air dryer governor assembly includes a plastic sleeve having an external sleeve surface and an internal sleeve surface that defines a piston bore. The air dryer governor assembly also includes a piston disposed in the piston bore and slidable along the internal sleeve surface between a preset cut-out setting and a preset cut-in setting of the air dryer governor assembly. The air dryer governor assembly further includes one or more ribs disposed on the external sleeve surface to prevent deformation of the plastic sleeve when the piston slides along the internal sleeve surface between the preset cut-out and cut-in settings.

A vehicle air compressor comprises a crankcase having a longitudinal central axis. The vehicle air compressor also comprises a head assembly including (i) a rear face that lies in a plane transverse to the longitudinal central axis of the crankcase, (ii) an air inlet port oriented in the same plane as the rear face, (iii) an air outlet port oriented in the same plane as the rear face, (iv) a coolant inlet port oriented in the same plane as the rear face, and (v) a coolant outlet port oriented in the same plane as the rear face.

A compressed air distribution system for a vehicle (e.g., rail vehicle) includes first and second reservoirs and first and second compressors. The first and second reservoirs are configured to contain respective compressed air to be supplied to first and second braking systems of the vehicle. The first braking system is configured to apply a first braking force to a first wheel set of the vehicle with the compressed air received from the first reservoir, and the second braking system is configured to apply a second braking force to a second wheel set with the compressed air received from the second reservoir. Each wheel set includes a respective axle and a respective one or more wheels coupled to the axle. The first and second compressors are configured to generate compressed air to be stored in the first and second reservoirs, respectively.

A compressed air distribution system for a vehicle (e.g., rail vehicle) includes first and second reservoirs and first and second compressors. The first and second reservoirs are configured to contain respective compressed air to be supplied to first and second braking systems of the vehicle. The first braking system is configured to apply a first braking force to a first wheel set of the vehicle with the compressed air received from the first reservoir, and the second braking system is configured to apply a second braking force to a second wheel set with the compressed air received from the second reservoir. Each wheel set includes a respective axle and a respective one or more wheels coupled to the axle. The first and second compressors are configured to generate compressed air to be stored in the first and second reservoirs, respectively.

A disc braking system, comprising: a brake disc; first and second perforated brake pad arrangements each comprising a brake pad, and each having a backside facing away from the brake disc and a frontside facing the brake disc and being configured to interact with the brake disc upon the disc braking system being operated; an air blowing arrangement arranged to blow air into a space between the frontsides of the first and second brake pad arrangements and the brake disc; and an air suction arrangement coupled to the backsides of the first and second brake pad arrangements and being controllable to suck dust resulting from braking through the first and second brake pad arrangements, wherein the air blowing arrangement comprises an expansion valve, a perforated plate, and a diffuser in series.

A disc braking system, comprising: a brake disc; first and second perforated brake pad arrangements each comprising a brake pad, and each having a backside facing away from the brake disc and a frontside facing the brake disc and being configured to interact with the brake disc upon the disc braking system being operated; an air blowing arrangement arranged to blow air into a space between the frontsides of the first and second brake pad arrangements and the brake disc; and an air suction arrangement coupled to the backsides of the first and second brake pad arrangements and being controllable to suck dust resulting from braking through the first and second brake pad arrangements, wherein the air blowing arrangement comprises an expansion valve, a perforated plate, and a diffuser in series.

A drive train arrangement includes an internal combustion engine with at least one cylinder having a combustion gas inlet, and an exhaust outlet; an exhaust gas pump having a pump inlet coupled to the exhaust outlet, and a pump outlet coupled to a vehicle air tank and to the combustion gas inlet. A first flow control arrangement controls fluid flow from the pump outlet to the combustion gas inlet, and to the vehicle air tank. Control circuitry controls operation of the first flow control arrangement. The control circuitry is configured to: acquire a first indication of an air pressure in the vehicle air tank; and control, in response to the air pressure in the vehicle air tank being below a first threshold, the first flow control arrangement to allow fluid flow from the pump outlet to the vehicle air tank.

A drive train arrangement includes an internal combustion engine with at least one cylinder having a combustion gas inlet, and an exhaust outlet; an exhaust gas pump having a pump inlet coupled to the exhaust outlet, and a pump outlet coupled to a vehicle air tank and to the combustion gas inlet. A first flow control arrangement controls fluid flow from the pump outlet to the combustion gas inlet, and to the vehicle air tank. Control circuitry controls operation of the first flow control arrangement. The control circuitry is configured to: acquire a first indication of an air pressure in the vehicle air tank; and control, in response to the air pressure in the vehicle air tank being below a first threshold, the first flow control arrangement to allow fluid flow from the pump outlet to the vehicle air tank.

An information processing system for a vehicle, especially a utility vehicle, includes a terminal device, an electronic air treatment device for providing treated and compressed air for a pneumatic system for the vehicle, and an internal and/or external server device. The electronic air treatment device has a storage device for storing device information indicative of at least an operation condition and/or an identity of the electronic air treatment device. The terminal device is configured to capture the device information from the storage device and transmit the device information to the server device, which is configured to check the device information by comparing the device information with corresponding device information of the electronic air treatment device initially stored within the server device.

A compressor module, in particular for a compressed-air supply system of a vehicle, is connected to or has an electronic control unit. The control unit is configured to specify the target speed as a function of a motor current currently drawn by the speed-controlled brushless electric motor and a specified maximum motor current such that the target speed corresponds to a specified constant speed as long as the motor current currently drawn by the speed-controlled brushless electric motor is lower than the specified maximum motor current and the target speed is adjusted such that the motor current currently drawn by the speed-controlled brushless electric motor corresponds to the specified maximum motor current as long as the motor current currently drawn by the speed-controlled brushless electric motor corresponds at least approximately, that is, within the scope of the control or adjustment precision, to the specified maximum motor current.