Axle assembly having wheel hubs configured for use in vehicle with central tire inflation system

摘要

An axle assembly, including an axle shaft, annular member, hub, inner and outer hub bearings, abutment ring, first and second seals, and an air inlet port. The annular member is disposed about the axle shaft. The hub is coupled for rotation with the axle shaft and defines an outlet port. The first and second shaft seals form seals between the hub and the annular member. The air inlet port is mounted to one of the annular member and the abutment ring and includes an inlet boss. A first fluid conduit is defined by the abutment ring or both the abutment ring and the inlet port. The first fluid conduit is in fluid communication with the air inlet boss. The second shaft seal is spaced apart from the first shaft seal along the rotational axis to at least partially define a second fluid conduit in fluid communication inlet and outlet ports.

主权项

1. An axle assembly comprising:
an inner hub assembly having an annular member and an abutment ring, the annular member being disposed about a rotational axis, the abutment ring being fixedly coupled to the annular member, wherein one of the annular member and the abutment ring has an inlet boss that defines an inlet port; a drive hub that is adapted to be to be coupled to a wheel, the drive hub defining an outlet port; first and second hub bearings supporting the drive hub for rotation on the annular member; and first and second shaft seals sealingly engaged to the drive hub and the inner hub assembly; wherein a first fluid conduit is partly defined by the abutment ring, the first fluid conduit being in fluid communication with the air inlet port; and wherein the second shaft seal is spaced apart from the first shaft seal along the rotational axis to at least partially define a second fluid conduit, the second fluid conduit coupling the outlet port in fluid communication with the first fluid conduit.