It is provided a pneumatic tyre having an equatorial plane for an agricultural machine, comprising: a tread having a first and a second lateral tread edge, the axial distance between the first and second lateral tread edges being the width of the tread, wherein the tread comprises a plurality of lugs extending radially between an inner surface of the tread and a tread surface to come into contact with the ground; and first lugs extending from the first lateral tread edge toward the inner equatorial plane, having a shoulder portion extending from the first lateral tread edge and a nose portion at the inner equatorial plane, and each of the first lugs having: an arcuate leading edge that arcs from the first lateral tread edge to an axial leading nose edge next to a substantially circumferential inner nose edge, and an arcuate trailing edge that arcs from the first lateral tread edge to the substantially circumferential inner nose edge; and second lugs extending from the second lateral tread edge toward the inner equatorial plane, having a shoulder portion extending from the second lateral tread edge and a nose portion at the inner equatorial plane, and each of the second lugs having: an arcuate leading edge that arcs from the second lateral tread edge to an axial leading nose edge next to a substantially circumferential inner nose edge, and an arcuate trailing edge that arcs from the second lateral tread edge to the substantially circumferential inner nose edge, wherein for each lug the length of the substantially circumferential inner nose edge is longer than the length of the axial inner nose edge and the width of said lug increases from the corresponding shoulder portion to the nose portion of said lug.

A load sensitive ride system and method is disclosed for a vehicle with an implement movably attached by a boom cylinder. The system includes a payload weight measuring system that measures payload weight and generates a signal indicative of the payload weight, a ride control circuit that adjusts hydraulic flow to and from the boom cylinder; and a controller that receives the signal indicative of the payload weight, and sends compliance commands to adjust ride control compliance based on the signal indicative of the payload weight. The system can include a tire inflation system that adjusts tire pressure. The controller can send inflation commands to adjust tire pressure based on the signal indicative of the payload weight. The compliance commands can depend on the components and compliance adjustment methods of the ride control circuit.

A tyre inflation pressure control system including a vehicle wheel having a tyre interior providing a first fluid chamber and an air reservoir providing a second fluid chamber. A first valve arrangement is installed remote from the wheel and is connectable to a pressurised fluid source. A second valve arrangement, suitably mounted on the wheel, is connected to the first valve arrangement by means of first and second fluid connections. The second valve arrangement is controllably operable to connect the first fluid connection to either fluid chamber. Controlled variation of fluid pressure in and between the fluid connections is provided by the first valve arrangement to control said second valve arrangement for operating the tyre pressure control system to connect the second fluid chamber to the first valve arrangement, and to connect the first and second fluid chambers.

A two-piece rim and tire assembly. The tire is held to the rim by fasteners extending through flanges integral with the tire main body and then into the rim. Further, the outer edges of the rim clinchably mount the tire main body thereto. A flexible overhanging portion extends outwardly of the tire main body minimizing dirt and mud accumulation on the tire and rim. A bearing is held within the rim by a ring.

A tire inflation system is provided for a vehicle supported by a plurality of inflatable tires. The system includes a compressor carried on the vehicle, and an air storage tank carried on the vehicle and connected to the compressor for storing compressed air. A plurality of automatically operable fill valves are provided, each fill valve being associated with a respective one of the tires so that each tire is communicated with the air storage tank via a separate one of the fill valves to increase inflation pressure in the tire when its respective fill valve is in an open position. A controller is operably associated with all of the fill valves. The controller has a multiple tire rapid inflation mode in which the fill valves associated with at least two of the tires are maintained in their open positions for an initial period until pressure in the air storage tank and the at least two tires substantially equalizes, and for a subsequent period during which the compressor provides additional inflation air to the at least two tires.

A tire inflation system is provided for a vehicle supported by a plurality of inflatable tires. The system includes a compressor, a main air storage tank and an auxiliary air storage tank. An automated shut off valve is disposed between the main air storage tank and the auxiliary air storage tank. An inflation sensor is arranged to detect an inflation pressure provided to the tires. A controller has a rapid inflation mode configured to initially communicate stored compressed air from both the main air storage tank and the auxiliary air storage tank to the tire or tires being inflated, and to then close the automated shut off valve so that additional compressed air from the compressor is communicated to the tire or tires being inflated without repressurizing the auxiliary air storage tank.

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.

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.

Tread (10) for agricultural tire (1) comprising a plurality of lugs protruding from the ground of the tread (11) in radially outer direction extending at a given inclination angle from a central portion of the tread toward both axial ends of the tread and alternately arranged at given intervals in the circumferential direction on one side and on the other with respect to the equatorial plane of the tire. The lugs (2) comprising a stepping-in surface (21) wherein the stepping-in surface (21) of at least one lug (2) comprises on its sidewall a first radially outer, concave surface (211) and a second, radially inner, concave surface (212) intersecting each other in a transition point (D) when viewed in a circumferential section.

A tire pressure control device (1) of an off-road vehicle is configured for changing tire pressures of vehicle wheels (2a, 2b, 3a, 3b) of at least one vehicle axle (2, 3). Each pneumatic tire has a pressure-controlled wheel valve (4a, 4b, 5a, 5b) which is pneumatically connected to a control pressure line (S1, S2) and to a supply pressure line (V1, V2). The control pressure lines (S1, S2) and the supply pressure lines (V1, V2) are configured to be pneumatically connected to a compressed air supply device (6) and to be controlled by an electronic control unit (10) The actuation of the wheel valves (4a, 4b, 5a, 5b) takes place axle by axle via control valves (15, 16), and the compressed air supply of the vehicle wheels (2a, 2b, 3a, 3b) is carried out by side via supply valves (11, 12).