Disclosed herein are devices and systems for continuous control of tire pressure. In one aspect, a device for continuously controlling tire pressure includes a bracket, a fixed non-rotating member fixedly attached to the bracket, and a non-fixed rotating member rotatably attached thereto. The fixed non-rotating member has at least one first seal surface, the at least one seal surface configured to be in fluid communication with a compressed air source. The non-fixed rotating member has at least one second seal surface, wherein an air chamber defined within a volume between interacting the at least one first seal surface and the at least one second seal surface causes fluid communication between an interior space of the tire and the compressed air source.

Disclosed herein are devices and systems for continuous control of tire pressure. In one aspect, a device for continuously controlling tire pressure includes a bracket, a fixed non-rotating member fixedly attached to the bracket, and a non-fixed rotating member rotatably attached thereto. The fixed non-rotating member has at least one first seal surface, the at least one seal surface configured to be in fluid communication with a compressed air source. The non-fixed rotating member has at least one second seal surface, wherein an air chamber defined within a volume between interacting the at least one first seal surface and the at least one second seal surface causes fluid communication between an interior space of the tire and the compressed air source.

The invention relates to a vehicle with a compressor assembly for supplying pressure medium to a tire cavity of a tire of the vehicle wheel mounted on a wheel hub, wherein the wheel hub is mounted on a wheel carrier so as to be rotatable about an axis of rotation. The compressor assembly is located at or in the wheel hub mount.

A control system for an air maintenance tire system is provided. The control system includes a sensor unit that in turn includes a pressure sensor for measuring a pressure in the tire cavity and an antenna for transmitting pressure data. A processor receives the pressure data and includes a memory for storing a predetermined low-pressure threshold. Actuation means that are in communication with the processor and actuate and de-actuate operation of the air maintenance tire system. A first signal is transmitted from the processor to the actuation means to actuate operation of the air maintenance tire system when the measured pressure in the tire cavity is below the threshold. A second signal is transmitted from the processor to the actuation means to de-actuate operation of the air maintenance tire system when the measured pressure in the tire cavity is at or above the threshold.

A control system for an air maintenance tire system is provided. The control system includes a sensor unit that in turn includes a pressure sensor for measuring a pressure in the tire cavity and an antenna for transmitting pressure data. A processor receives the pressure data and includes a memory for storing a predetermined low-pressure threshold. Actuation means that are in communication with the processor and actuate and de-actuate operation of the air maintenance tire system. A first signal is transmitted from the processor to the actuation means to actuate operation of the air maintenance tire system when the measured pressure in the tire cavity is below the threshold. A second signal is transmitted from the processor to the actuation means to de-actuate operation of the air maintenance tire system when the measured pressure in the tire cavity is at or above the threshold.

A vehicle having one or more inflatable wheels, the vehicle including an internal combustion engine including a cylinder, a tire inflation system in fluid communication with and configured to selectively direct compressed air into at least one wheel of the one or more inflatable wheels, a compressor assembly having an outlet, where the compressor assembly is operable in a first mode, in which the outlet is in fluid communication with the cylinder of the internal combustion engine, and a second mode, in which the outlet is in fluid communication with the tire inflation system.

A track system includes an attachment assembly including at least one of a first pivot defining a roll pivot axis, a second pivot defining a pitch pivot axis, and a third pivot defining a yaw pivot axis of the track system. A frame assembly is disposed laterally outwardly from the attachment assembly and connected to the attachment assembly. The track system further includes at least one actuator for pivoting the frame assembly about at least one of the roll and yaw pivot axes, and at least one monitoring for determining, at least indirectly, at least one of a state of the track system and a ground surface condition. The at least one monitoring sensor is communicating with a track system controller to control the operation of the at least one actuator based on the at least one of the state of the track system and the ground surface condition.

A track system includes an attachment assembly, a frame assembly connected to the attachment assembly including at least one wheel-bearing frame member. The track system further has leading and trailing idler wheel assemblies at least indirectly connected to the at least one wheel-bearing frame member, at least one support wheel assembly at least indirectly connected to the at least one wheel-bearing frame member, an endless track extending around the leading idler wheel assembly, the trailing idler wheel assembly, and the at least one support wheel assembly. At least one monitoring sensor connected to the endless track and including an array of sensing devices communicates with a track system controller for determining, at least indirectly, at least one of a state of the track system and a ground surface condition.

A track system for use with a vehicle includes an attachment assembly connectable to the chassis of the vehicle having a first pivot extending vertically and defining a yaw pivot axis of the track system, and a second pivot extending laterally and defining a pitch pivot axis of the track system. A frame assembly is disposed laterally outwardly from the attachment assembly and connected thereto. The frame assembly includes at least one wheel-bearing frame member. The track system further includes at least one actuator connected between the attachment assembly and the frame assembly for pivoting the frame assembly about the yaw pivot axis, a leading idler wheel assembly at least indirectly connected to the at least one wheel-bearing frame member, a trailing idler wheel assembly at least indirectly connected to the at least one wheel-bearing frame member, at least one support wheel assembly, and an endless track.

An onboard inflation system for a vehicle such as an agricultural vehicle is disclosed, including a tire mounted on a wheel to form a wheel and tire assembly. The tire includes a tread portion and a tire cavity including an inflation chamber adjacent the tread portion of the tire. A storage chamber is carried by at least one of the wheel and the tire. A compressor arrangement is communicated with both the storage chamber and the inflation chamber. The compressor arrangement is configured to transfer air between the storage chamber and the inflation chamber.