A wheel end assembly for a tire inflation system includes a sealing ring disposed on an axle housing. The sealing ring includes a conduit formed therethrough in fluid communication with a conduit formed through a hub. The hub is rotatably disposed on the axle housing adjacent the sealing ring. An inner rotary seal is disposed between the sealing ring and the hub. An outer rotary seal is disposed between the sealing ring and the hub. The hub conduit is in fluid communication with the sealing ring conduit via an area between the inner rotary seal and the outer rotary seal. A bearing seal is disposed between the sealing ring and the hub. The bearing seal is disposed outboard of the outer rotary seal. The inner rotary seal, the outer rotary seal, and the bearing seal are each in sealing contact with the sealing ring.

A controller for controlling a pneumatic control valve (PCV) in a central tire inflation system (CTIS). The controller includes an electronic processor having an electrical input for receiving a supply-side pressure signal. The electronic processor is configured to control a first control valve (V.sub.INSS) to generate a pneumatic control signal for changing an operating state of a pneumatic control valve (PCV). The electronic processor also monitors the supply-side pressure signal and identifies a change in the operating state of the pneumatic control valve (PCV) in dependence on a change in the supply-side pressure. The electronic processor is configured to output a first valve close signal upon determining that the pneumatic control valve (PCV) has changed operating state. Also provided is a CTIS incorporating a controller; to a vehicle; and to a method of controlling a pneumatic control valve (PCV).

A pressure management system for a tire assembly on a vehicle including: a housing unit, a pump, and a power interface.

A rotary union assembly for use with a tire inflation system includes a hollow tube configured to deliver air between proximal and distal ends, a bullet having a central axial aperture receiving the tube therethrough, a proximal retaining structure defined on the proximal end of the tube, and a distal retaining structure defined on a distal end of the tube, configured to retain the bullet on the tube therebetween. A cartridge is coupled to a distal end of the tube and includes one or more apertures on a sidewall thereof in fluid communication with the tube. In use, the rotary union assembly is coupled between a non-rotating axle of a vehicle and the rotating hubcap of a tire rotating about the axle and may be removed as a unit for repair and/or replacement of wear parts on the assembly.

Active tire orientation and pressure adjustment systems and methods of use in response to a plurality of activation conditions can ensure efficient tire orientation and pressure modes are active when necessary to balance tire traction and driving range of an electric vehicle. The activation conditions can be customized based on driver preferences to help ease range anxiety while providing a balance with vehicle traction.

Methods and systems for adjusting air pressure of one or more tires of a vehicle. The system includes one or more valves respectively corresponding to the one or more tires, each valve of the one or more valves configured to receive air for inflating a corresponding tire or release air for deflating the corresponding tire. The system includes an air regulation device configured to provide air to the one or more valves of the one or more tires via one or more respective air lines and provide air to one or more air suspension devices via the one or more respective air lines. The system includes an electronic control unit (ECU) configured to cause the one or more tires to inflate or deflate based on a tire air pressure configuration.

A system for monitoring wheel performance of a vehicle, the vehicle including a plurality of wheels and a plurality of tires mounted on the plurality of wheels. The system may include a plurality of sensors on the plurality of wheels and a controller operatively connected to the plurality of sensors. The controller may include at least one processor configured to: receive measurements from the plurality of sensors; determine, for each wheel of the plurality of wheels, based on the measurements from a sensor of the plurality of sensors on that wheel, an angular acceleration of that wheel; calculate, for each wheel of the plurality of wheels, based on the angular acceleration of that wheel, an angular jerk of that wheel; and determine, for each wheel of the plurality of wheels, based on the angular jerk of that wheel, an amount of tire slip for that wheel.

A system for monitoring wheel performance of a vehicle, the vehicle including a plurality of wheels and a plurality of tires mounted on the plurality of wheels. The system may include a plurality of sensors on the plurality of wheels and a controller operatively connected to the plurality of sensors. The controller may include at least one processor configured to: receive measurements from the plurality of sensors; determine, for each wheel of the plurality of wheels, based on the measurements from a sensor of the plurality of sensors on that wheel, an angular acceleration of that wheel; calculate, for each wheel of the plurality of wheels, based on the angular acceleration of that wheel, an angular jerk of that wheel; and determine, for each wheel of the plurality of wheels, based on the angular jerk of that wheel, an amount of tire slip for that wheel.