A wheel valve assembly having a body portion coupled with a cover portion. A diaphragm disposed between the body portion and the cover portion. A first biasing member disposed between the cover portion and the diaphragm in a cover cavity defined thereby. A control cavity defined by the body portion and the diaphragm, and at least one control port defined by the body portion and in fluid communication with the control cavity. A tire port defined by the body portion and in selective fluid communication with the control cavity. A first and second conduit disposed in the body portion in fluid communication with a third and fourth conduit disposed in the cover portion. An equalization valve assembly disposed in one of the conduits to control fluid communication between the cover cavity and the control cavity.

A vehicle-tire pressure-level regulator has a pressure vent cooperable with an actuator for pressure release and a pump for pressure recovery. The actuator and the pump motor are respectively electronically controlled to adjust the tire pressure in relation to high and low thresholds above and below a desired operating pressure throughout a race. The pressure vent does not operate if an accelerometer detects that the tire is distorted because the vehicle is turning. If the vehicle is not turning and the high pressure threshold is reached, the vent is opened. If the low pressure threshold is reached the pump is activated until the tire is restored to the desired operating pressure. Operation of the vent may be controlled to provide different rates of outlet flow as real-time pressure may require. Operation of the vent may be prevented if a transient pressure spike occurs.

A tire pressure management system for a truck or trailer having a first tire and a second tire, an air pressure supply sealingly connected to the first tire and to the second tire for communication of pressurized air therebetween, and an electronic pressure regulator configured to receive a signal from a load management system and automatically adjust the air pressure setting based on the signal so as to regulate the pressure of air passing from the air pressure supply to the first and second tires.

A tire inflation system for a vehicle having a control unit including an internal fluid conduit. At least one extended stroke valve including a housing in fluid communication with the internal fluid conduit and a wheel assembly. The extended stroke valve includes a hollow outer shaft having a first flange. A first biasing member is disposed about the hollow outer shaft between the first flange and an annular protrusion defined by the housing. The extended stroke valve also includes an inner shaft having a second flange, wherein the inner shaft is at least partially disposed in the hollow outer shaft. A second biasing member is disposed about the inner shaft between the second flange and a surface defined by the hollow outer shaft. In addition, a sealing member is coupled with an end of the inner shaft opposite the second flange.

A novel valve that may include a self-energizing seal member with a lobe extending toward a valve seat surface, a radially outwardly extending skirt, an axially extending nose, solenoid-operated three-position valve member, a pressure sense port, and/or a pressure pick-up opening. The features of the valve may allow the valve to operate at higher flow rates while requiring less energy to operate, may have a wider pressure and/or temperature operation range, may allow bidirectional fluid flow, may be less expensive to manufacture, and/or may enable a simple and compact assembly of the valve with a pressure sensor. The self-energizing seal member may include a base portion and the lobe extending may extend at an angle from the base portion relative to a longitudinal axis. The lobe may reduce energy requirements to operate the valve compared to larger sealing contact area seals. For example, the lobe may have a small sealing area to allow the valve to be better balanced.

An assembly for a tire pressure management system includes a housing. The housing includes a first branch and a second branch. The second branch is oriented at an oblique angle with respect to the first branch. The first branch and the second branch are in fluid communication with each other and a main branch. The main branch is rotatable with respect to the first branch. A valve assembly is housed within the first branch. The valve assembly provides selective fluid communication between a portion of the tire pressure management system and the main branch. A pressure relief valve assembly is housed within the second branch. The pressure relief valve assembly provides selective fluid communication between the assembly and the atmosphere.

A controller for a motor vehicle central tire inflation system. The controller causes the system to operate in a selected one of a plurality of operating modes that include a leakage assist mode in which the controller causes the system to inflate the tires to predetermined leakage assist pressure value. The controller is configured automatically to cause the system to assume the leakage assist mode in dependence at least in part on a first pressure signal indicative of the pressure of one or more tires, wherein when the system determines that a tire is suffering leakage the system is configured to establish a gas flow path between the tire and a remote pressure sensor and to measure a pressure of gas in the tire by means of the remote pressure sensor by reference to a second pressure signal indicative of a pressure measured by the remote pressure sensor.

A tire inflation system including a wheel rim having an aperture through the radially exterior and interior surfaces thereof. A wheel valve assembly including a mounting portion coupled with the wheel rim interior surface. The mounting portion having an opening in fluid communication with the wheel rim aperture. A cap portion coupled with the mounting portion, defining a fluid inlet and a perforation in fluid communication. A valve at least partially disposed within the cap portion, and disposed parallel with the longitudinal axis of the wheel rim. A base portion coupled with the cap portion, and at least partially surrounding the valve. A fluid outlet defined by the base portion, and in selective fluid communication with the fluid inlet via the valve. A biasing member disposed at least partially around the valve, whereby the biasing member is compressed in the wheel valve assembly closed position.

A system for monitoring tire pressure of at least one vehicle tire of a utility vehicle includes a pressure sensor for detecting an internal tire pressure of the at least one vehicle tire and an electrically controllable tire inflation system for varying the internal tire pressure. The system also includes a monitoring unit disposed in communication with the pressure sensor and the tire inflation system. The monitoring unit identifies a defect-induced loss of pressure in the at least one vehicle tire based on the detected internal tire pressure, determines a temporal progression of the detected defect-induced loss of pressure, calculates a volume flow necessary for continuous compensation of the pressure loss based on the temporal progression, and controls the volume flow into the at least one vehicle tire via the tire inflation system.

A combination air supply system for a work vehicle, includes a work vehicle compressor configured to be mounted on the work vehicle, wherein the work vehicle compressor is configured to compress a first supply of ambient air and to output a first compressed air supply via a compressed air line, wherein the compressed air line is configured to receive a second compressed air supply from an implement compressor via a compressed air connection line, wherein the implement compressor is configured to be mounted on an implement towed by the work vehicle, wherein the compressed air connection line is configured to couple the implement compressor to the compressed air line via a coupler, and a tire inflation system fluidly coupled to the compressed air line and configured to selectively increase and decrease an air pressure within a tire of the work vehicle, wherein the tire inflation system is configured to distribute the first compressed air supply, the second compressed air supply, and a combination air supply of the first and second compressed air supplies to the tire.