초록 ▼

A hydraulic bulkhead configured for use with a limited slip differential includes a plenum comprising a passageway for hydraulic fluid and a boss. A first seal is located on an outer surface of the boss. The outer surface of the boss is a low pressure area relative to the inner surface of the boss.

A hydraulic bulkhead configured for use with a limited slip differential includes a plenum comprising a passageway for hydraulic fluid and a boss. A first seal is located on an outer surface of the boss. The outer surface of the boss is a low pressure area relative to the inner surface of the boss. The plenum is stationary relative to the limited slip differential. A differential assembly including the inventive hydraulic bulkhead is also disclosed.

대표청구항 ▼

1. A hydraulic bulkhead configured for use with a limited slip differential, the bulkhead comprising: a plenum that is configured to be inserted into an axle housing and supported relative to the limited slip differential, the plenum including a boss that is configured to be inserted into a through-

1. A hydraulic bulkhead configured for use with a limited slip differential, the bulkhead comprising: a plenum that is configured to be inserted into an axle housing and supported relative to the limited slip differential, the plenum including a boss that is configured to be inserted into a through-hole in the axle housing for holding the plenum stationary against rotation relative to the axle housing; anda first seal located on an outer surface of the boss to seal an interface between the plenum and the axle housing. 2. The hydraulic bulkhead of claim 1, wherein the boss is substantially cylindrical. 3. The hydraulic bulkhead of claim 1, wherein the through-hole in the axle housing is machined. 4. The hydraulic bulkhead of claim 3, wherein a gap between the boss and the axle housing is greater than about 0.5 mm. 5. The hydraulic bulkhead of claim 1, further comprising a second seal located on the outer surface of the boss. 6. The hydraulic bulkhead of claim 1, further comprising a third seal located on an inner surface of the boss. 7. The hydraulic bulkhead of claim 6, wherein the third seal comprises a static seal. 8. The hydraulic bulkhead of claim 1, wherein the outer surface of the boss is at a lower pressure than an inner surface of the boss. 9. The hydraulic bulkhead of claim 1, wherein the first seal is configured for operation up to about 15 psi. 10. The hydraulic bulkhead of claim 1, further comprising a hydraulic fitting in fluid communication with the plenum. 11. The hydraulic bulkhead of claim 10, further comprising a hose fitting in fluid communication with the hydraulic fitting. 12. The hydraulic bulkhead of claim 11, further comprising a pump in fluid communication with the hose fitting. 13. The hydraulic bulkhead of claim 1, wherein the first seal comprises an o-ring. 14. The hydraulic bulkhead of claim 1, wherein the limited slip differential comprises: a piston chamber;a piston located in the piston chamber; anda clutch pack configured for actuation by movement of the piston. 15. A differential assembly comprising: an axle housing;a differential case disposed within the axle housing;a differential gear assembly disposed within the differential case, the differential gear assembly driven by an input shaft and configured to allow differential rotational speed between a pair of opposing output shafts;a clutch pack disposed within the differential case, the clutch pack configured to retard the differential rotational speed between the output shafts;a hydraulic bulkhead comprising: a plenum that is configured to be inserted into the axle housing and supported relative to the differential case, the plenum including a boss that is configured to be inserted into a through-hole in the axle housing for holding the plenum stationary against rotation relative to the axle housing; anda first seal located on an outer surface of the boss to seal an interface between the plenum and the axle housing. 16. The differential assembly of claim 15, wherein the hydraulic bulkhead further comprises a second seal located on the outer surface of the boss. 17. The differential assembly of claim 16, wherein the hydraulic bulkhead further comprises a third seal located on an inner surface of the boss.