A tire pressurization arrangement on a vehicle in which the pressurization of the tire is controlled by a vehicle control unit and the vehicle control unit is notified of a desired tire pressure or desired tire volume. An air flow rate in a supply line to the tire is established so that the time to pressurize the tire to the desired tire pressure/volume is calculable, or the time taken to pressurize the tire to an interval pressure/volume is calculable, said interval pressure/volume being between a current tire pressure/volume and the desired pressure/volume, and if the time to pressurize the tire to the desired pressure is exceeded, the control unit gives a warning signal and/or stops deflation or inflation.

The invention relates to the vehicles for off-road driving, both on land and on water, which can be used for construction of vehicles with good cross-country ability, (all-terrain vehicles). An all-terrain vehicle comprises a cabin with a glazing and a door, a passenger compartment, a frame, an engine with an exhaust system, a transmission gearbox, a steering gear, a running gear comprising a final drive system connected with at least two pairs of axle shafts with the wheels mounted on them having the low pressure tires, a suspension connected with the wheel tires, a tire inflation system, a heating system, a control system, is different in that it comprises an air line connected simultaneously with all wheel tires and associated with a tire inflation system. A suspension of an all-terrain vehicle comprises a wheel suspension system connected with the wheel tires, a fluid power drive, and a tire inflation system, is different in that a wheel suspension system is configured as an air line formed by the hollow tubes welded together to make a frame formed by the side members and the cross bars or it is configured outside a frame to form a closed circuit connected with each tire by means of the pipelines with the valve members, whereas as a fluid power drive and a tire inflation system the claimed invention provides an engine exhaust system equipped with a damper and connected with an air line through a pipeline with a valve member.

A tire pressure control arrangement for a vehicle having at least two tires connected to an air supply. Each tire is connected to the air supply via a supply line having a first valve connected to a second valve. The arrangement further includes a pressure sensor between the two valves. The first valve is closed while the supply line is connected to a pressure supply and the pressure in the supply line is monitored for a pre-determined period of time by a control system on the vehicle to detect whether there are any leaks in the arrangement.

A method of setting the rides height of the air springs and air pressures of the tires, including receiving a user selected setting or preprogrammed ride height settings; sensing a ride height of, and air pressure within, each of the air springs; determining the weight of the vehicle based on the sensed ride height and air pressure within each of the air springs; providing specified ride heights for the left and right front and rear air springs; determining specified air pressures for the left and right front and rear tire inflators, based upon the determined weight of the vehicle and selected setting; inflating the left and right front and rear air springs to the specified ride heights; and inflating the left and right front and rear tires to the specified air pressures.

A method of repairing a tire includes providing a tire. The tire has a tire pressure. It is determined if the tire pressure is below a target tire pressure. If the tire pressure is below the target tire pressure a first flow of pressurized air is directed to the tire. It is determined if the tire is torn or punctured. If it is determined that the tire is torn or punctured, a signal is sent to a heating element to produce heat energy. The heat energy is transferred to a second flow of pressurized air. The heated, second flow of pressurized air is directed to the tire.

A tire pressure management system includes at least an axle enclosing a pressurized fluid, a hubcap supported by the axle and having an interior and an exterior, a rotary union axially aligned with the axle and mounted to the hubcap, the rotary union includes at least rotary union housing providing a central bore, a fluid conduit having upstream and downstream ends, a first bearing and a second bearing. Each of the bearings are in contact engagement with the fluid conduit via an inner race, and in pressing engagement with a bearing sleeve via an outer race, the bearing sleeve in pressing contact with the central bore; and a first and second seal, the first seal is disposed between the first bearing and the downstream end of the fluid conduit, and the second seal is disposed between the second bearing and the upstream end of the fluid conduit.

A pressure and temperature compensated valve assembly includes a flow valve allowing inflation flow from a control port to a tire port and controlling deflation flow from the tire port to the control port. A throttle valve restricts deflation flow between the tire port and the control port when deflating the tire at high flow rates or when tire pressure is high, thus enabling the flow valve to be closed. The throttle valve includes a throttle diaphragm that throttles in response to flow from the tire port and which does not restrict inflation flow from the control port. The valve assembly further includes a temperature responsive member engaging the flow valve, and which deforms in response to a change in temperature in the valve assembly, thus negating temperature effects on the flow valve, allowing the flow valve to close at a consistent force across a range of operating temperatures.

Described herein is an inflation/deflation device of the type comprising a portion provided with an intake orifice for taking in a gaseous fluid under pressure, and a portion provided firstly with an inflation/deflation orifice designed to communicate with the confinement capacity, and secondly with a discharge orifice opening out between the two portions; and a valve member control system for inflation/deflation operations per se. In accordance with the invention, one of the portions is provided with arrangements for receiving a washer, which arrangements are suitable for allowing said washer to deform elastically, under the effect of a pressure of a gaseous fluid discharging through the discharge orifice, so as to release face-on bearing by an annular protuberance provided on the other portion, and so as to generate a fluid discharge passage between said annular protuberance and said washer.

A system and method of controlling pressure of a tire. The method may include executing a low supply pressure operating mode when an available supply pressure of pressurized gas is less than a target tire pressure. The tire may be inflated with pressurized gas provided at the available supply pressure when an estimated tire pressure is not within a threshold amount of the available supply pressure.

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.