Method and apparatus for lubricating a differential in an axle assembly
AssigneeAmerican Axle & Manufacturing, Inc.
InventorsGregory J. Hilker, Gregory E. Woodside
Life of this patent
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Abstract
A method for lubricating an axle assembly can include: coupling a pair of bearing to opposite ends of a differential housing; placing the differential housing into a carrier housing assembly such that the bearings support the differential housing on the carrier housing assembly for rotation about a first axis; collecting a lubricant proximate a side of one of the bearings opposite the differential housing; and rotating the differential housing about the first axis to cause the one of the bearings to move a portion of the collected lubricant through the differential housing. A related axle assembly is also provided.
Claims20
An axle assembly comprising:
- a carrier housing assembly that defines a cavity;
- a differential housing received in the cavity;
- first and second bearings disposed between the carrier housing and the differential housing, the first and second bearings supporting the differential housing for rotation about a first axis;
- a differential gear set received in the differential housing;
- a ring gear coupled to the differential housing;
- a pinion received in the cavity and supported for rotation about a second axis that is perpendicular to the first axis;
- and
- a lubricant received in the cavity;
- wherein the first bearing includes an outer race, an inner race and a plurality of rollers between the outer race and the inner race;
- wherein a lubricant reservoir is formed by at least one of the outer race and the carrier housing, the lubricant reservoir being disposed on a first side of the first bearing opposite the differential gear set, the lubricant reservoir extending at least partially about the first bearing and collecting a first portion of the lubricant therein;
- and
- wherein an oil gallery is formed through the differential housing;
- and
- wherein the first portion of the lubricant is moved by the first bearing when the differential housing is rotating about the first axis such that the first portion of the lubricant flows through the first bearing and into the oil gallery.
A method for operating an axle assembly that includes a carrier housing assembly that defines a cavity, a differential housing received in the cavity, first and second bearings disposed between the carrier housing assembly and the differential housing and supporting the differential housing for rotation about a first axis, a differential gear set received in the differential housing, a ring gear coupled to the differential housing, a pinion received in the cavity and supported for rotation about a second axis that is perpendicular to the first axis, and a lubricant received in the cavity, the method comprising:
- collecting a first portion of lubricant in a lubricant reservoir adjacent the first bearing;
- and
- rotating the differential housing about the first axis to cause the first portion of lubricant to be moved through an oil gallery in the differential housing, the first portion of lubricant flowing from the lubricant reservoir and through the oil gallery to at least partially lubricate the differential gear set.
A method for lubricating an axle assembly, the method comprising:
- coupling a pair of bearing to opposite ends of a differential housing;
- placing the differential housing into a carrier housing assembly such that the bearings support the differential housing on the carrier housing assembly for rotation about a first axis;
- collecting a lubricant in a lubricant reservoir proximate a side of one of the bearings opposite the differential housing;
- and
- rotating the differential housing about the first axis to cause the one of the bearings to move a portion of the collected lubricant through the differential housing.
Dependencies are inferred from the claim text.