Axle housing bowl lubricant temperature reduction system

• US 6,267,203 B1
• Filed: 10/26/1999
• Issued: 07/31/2001
• Est. Priority Date: 10/26/1999
• Status: Expired due to Term

• Current Assignee: Meritor Heavy Vehicle Systems, LLC (Meritor, Inc. (Nevada))
• Original Assignee: Meritor Heavy Vehicle Systems, LLC (Meritor, Inc. (Nevada))
• Inventors: Keeney, Christopher S., Kramer, Dennis A., McKenzie, Jack R., Brissette, Ronald N., Bell, Dale, Mueller, Brian J.
• Primary Examiner(s): Bonck, Rodney H
• Application Number:
  US09/426,632
• Time in Patent Office: 644 Days
• Field of Search: 184/6.12, 184/104.1, 475/160, 744/67, 746/06.A
• US Class Current: 184/6.12
• CPC Class Codes: F16H 57/0423 Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes means for guiding lubricant into an axial channel of a shaft F16H57/0426; lubrication by injection, injection nozzles or tubes therefore F16H57/0456
• CPC Class Codes: F16H 57/0483 Axle or inter-axle differentials
• CPC Class Codes: F16N 39/02 by cooling heat-exchangers in general F28
• CPC Class Codes: Y10T 74/19991 Lubrication
• CPC Class Codes: Y10T 74/2189 Cooling

Abstract

An improved method of removing heat from a lubricant in an axle housing includes the use of a deflector in the axle housing. The deflector is positioned on a cover secured to the housing bowl. Lubricant is thrown against the deflector by a ring gear in the bowl. The lubricant is directed by the deflector outwardly to the axle ends of the axle assembly. In this way, the lubricant is exposed to a greater surface area, and the cooling efficiency of this system is greatly improved.

Claims

1. An axle housing comprising:

a central bowl having a vertically lower bowl portion, and a pair of axle housings extending from opposed sides of said central bowl, said central bowl having a portion which is vertically lower than portions of said axle housing when said axle housing is positioned on a vehicle;

a ring gear rotating within said bowl, and facing an inner wall of said bowl, a deflector positioned between said wall and said ring gear, and aligned to deflect lubricant from said ring gear outwardly into at least one of said axle housings, said deflector being positioned at a vertical position within a vertical extent of said ring gear, and further positioned to be within a lateral extent of said ring gear, said lateral extent being defined along a rotational axis of said ring gear and said vertical extent being defined perpendicular to said rotational axis.

2. An axle housing as recited in claim 1, wherein there are a pair of deflectors designed to deflect lubricant to both sides of said central bowl.

3. An axle housing as recited in claim 1, wherein said wall is provided by a removable cover bolted to said bowl of said housing.

4. An axle housing as recited in claim 1, wherein said deflector is angled downwardly toward said ring gear from said wall.

5. An axle housing as recited in claim 4, wherein said deflector is also angled downwardly from a central area in said housing bowl toward said axle housing such that said deflector is angled in two directions.

6. An axle housing as recited in claim 1, wherein said deflector is angled downwardly and toward said axle housing in a direction moving away from a center of said bowl.