An assembly (8) for a central tire inflation system includes a housing having a first end and a second end. The housing defines a fluid conduit disposed through the first and second ends. The assembly also includes one or more sensors (205, 210) having a portion disposed in the fluid conduit. Further, a power source (245) is in electrical communication with the sensor. The assembly additionally includes a kinetic energy device (220) in electrical communication with the power source. The kinetic energy device may comprise a magnet (255) sliding on a guide (265). As an alternative, the kinetic energy device may comprise a turbine (275).

A distributed system (54) for supplying pressurized medium, in particular compressed air, in a vehicle (10), a wheel unit (14) for a vehicle (10), and a decentralized integrated pressurized medium supply device (70) for a wheel unit (14) with a rotatably supported vehicle tire (16). The pressurized medium supply device (70) has a decentralized compressor unit (74) and has a pressurized medium path (98) that extends between the decentralized compressor unit (74) and a rim body (92) of the vehicle tire (16), which rim body is associated with a wheel body side (80) of the wheel unit (14). The decentralized compressor unit (74) has an energy supply connection, which can be connected to an energy supply unit (104) via an energy supply path (106). The pressurized medium supply device (70) is associated with a support side (82) and the wheel body side (80) of the wheel unit (14). The pressurized medium path (98) or energy supply path (106) includes a rotary/stationary transition (116, 158) between the support side (82) and the wheel body side (80).

A rotary union for a tire inflation system may comprise a stator and a rotor assembly, and may be contained entirely within the space formed by a hubcap and wheel end. The rotor assembly may be mounted to the interior of a hubcap. The rotor assembly may comprise a tube that extends into the stator. The tube may be sealed in the rotor assembly by a first annular seal, and may be sealed in the stator by a second annular seal.

The invention relates to a hydraulic device including: a stator and a rotor, in which the rotor can rotate relative to the stator about a first axis of rotation; and a shaft mounted on the rotor such as to rotate therewith. The shaft has a wheel carrier provided at a proximal end thereof and designed to receive a rim and a tire. The shaft includes a through-channel extending from the proximal end to an opposing distal end. The hydraulic device includes an air chamber formed at the distal end of the shaft and connected to the through-channel. The through-channel and air chamber are produced such as to allow a flow of air in order to control the pressure of a tire.

A tire management system includes a control valve and a check valve. A method for managing a tire includes: determining a pressure parameter value, determining an operational parameter for a valve based on the pressure parameter value, and controlling the valve based on the operational parameter.

The invention relates to a system for pneumatically powering a wheel comprising a bearing support (10), a shaft (20) comprising a hub-forming end (21) which extends radially (Y), at least one set of rolling bearings (30), wherein the system further comprises a chamber (C) formed by the hub-forming end (21), the bearing support (10), a rolling bearing seal (40) and a chamber seal (50), a primary channel (60) crossing the bearing support (10) and opening into the chamber (C), a secondary channel (70) crossing the hub-forming end (21) and opening into the chamber (C), wherein seals seal the cavity (C) in order to let air pass from the primary channel to the secondary channel via the cavity (C).

A steer axle spindle may have one or more channels formed therein. A rotary union may be mounted to a steer axle wheel end assembly. The rotary union may be sealingly connected to a pressurized fluid source through the channel, and sealingly connected to a vehicle tire.

The present disclosure relates to a wheel valve arrangement (1) for a tire pressure control system of a vehicle, which wheel valve arrangement (1) comprises a pneumatically switchable wheel valve (2) and a shuttle valve (3) operating on the pressure balance principle as a vent valve, the control input (6) of which is to be connected to a tire connection channel (7) leading to a tire interior, and the input (4) of which is to be connected as control input to an air supply line. Said wheel valve arrangement (1) is characterized by the fact that the pneumatically controllable wheel valve (2) is connected into the tire connection channel (7) for closing and opening a fluid path between the shuttle valve (3) and a wheel connection (9) belonging to the wheel valve arrangement (1), which wheel valve (2) has a valve body (17) which can be moved by a piston rod (19) which, by means of a least one spring element (24), acts against the valve seat (13) assigned thereto in the closed position and which can be moved by the piston rod (19) into an open position moved away from the valve seat (13), and has a control piston (22) guided in a control cylinder (21) and connected to the piston rod (19), which control cylinder (21) is to be connected or is connected by the control chamber (28) of the control cylinder delimited by the drive side of the control piston (22) via the control line (29) to the supply line (5) on the input side of the shuttle valve (3), wherein the control piston (22) is designed in order that the valve body (17) can be moved away from the valve seat (13) of the valve body by means of the target tire filling pressure present in the air supply line (5) in order to open the wheel valve (2). The present disclosure further relates to a tire pressure control system for a vehicle having such a wheel valve arrangement.

Systems and methods for determining the health of a seal in a tire inflation system are provided. In one example, a method of determining the health of a seal of a tire inflation system on a vehicle includes obtaining one or more pressure measurements of a tire of the vehicle with a pressure transducer in communication with an electronic control unit and sending the one or more pressure measurements to a computer network via a communication network that receives signals from the electronic control unit, the communication network including a telematics device in communication with the computer network, wherein the computer network is configured to determine the health of the seal based on the one or more pressure measurements communicated by the telematics device.

A steer axle spindle may have one or more channels formed therein. A rotary union may be mounted to a steer axle wheel end assembly. The rotary union may be sealingly connected to a pressurized fluid source through the channel, and sealingly connected to a vehicle tire.