TURBINE-END BEARING SUPPORT AND COOLING SYSTEM

• US 20160130976A1
• Filed: 06/25/2014
• Published: 05/12/2016
• Est. Priority Date: 07/01/2013
• Status: Active Grant

• Current Assignee: BorgWarner Incorporated
• Original Assignee: BorgWarner Incorporated
• Inventors: BUCKING, Michael
• Granted Patent: US 10,119,417 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01D 25/16 Arrangement of bearings; Supporting or mounting bearings in casings bearings per se F16C
• CPC Class Codes: F01D 25/162 Bearing supports
• CPC Class Codes: F01D 25/18 Lubricating arrangements of machines or engines in general F01M
• CPC Class Codes: F01D 25/24 Casings modified for heating or cooling F01D25/14; Casing parts, e.g. diaphragms, casing fastenings casings for rotary machines or engines in general F16M ; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045
• CPC Class Codes: F02C 7/06 Arrangements of bearings bearings F16C; Lubricating of turbo machines F01D25/18; of machines or engines in general F01M
• CPC Class Codes: F05D 2220/40 in turbochargers
• CPC Class Codes: F05D 2240/24 for turbines
• CPC Class Codes: F05D 2240/54 Radial bearings
• CPC Class Codes: F05D 2240/60 Shafts
• CPC Class Codes: F16C 2360/24 Turbochargers in general F02C6/12
• CPC Class Codes: F16C 35/02 in the case of sliding-contact bearings

Abstract

A turbocharger (300) having a rotatable shaft (312) passing through a bearing housing (303) with a turbine-end bearing support (580) with a support bar (600). A turbine-end bearing support (580) may include the support bar (600) with radial supports (610) and (620) connected to each opposite side (492) and (494) of cavity (496) of the bearing housing (303) wherein oil can flow in recesses (640) and (650) above the radial supports (610) and (620). Each radial support (610) and (620) of the support bar (600) is preferably integrated in the corresponding side (492) and (494). A turbine-end bearing support (580) may also include the support bar (600) with a rod portion (622) forming a bottom tie support bar (612) that supports the bottoms of both bearing supports (490) and (580), which are top-supported by the bearing housing (303). Each support bar (600) is preferably integral with the bearing support (580).

Claims

1. A turbocharger (300) having a rotatable shaft (312) passing through a bearing housing (303) comprising a turbine-end bearing support (580) for the rotatable shaft (312) in the bearing housing (303) with a support bar (600) having radial supports (610) and (620) connected to each opposite side (492) and (494) of a cavity (496) of the bearing housing (303) wherein oil can flow in recesses (640) and (650) above the radial supports (610) and (620) adjacent to the bearing support (580).

2. The turbocharger of claim 1 wherein the support bar (600) is integral with the turbine-end bearing support (580) and the radial supports (610) and (620) of the support bar (600) are each integral with the respective side (492) and (494).

3. The turbocharger of claim 1 further comprising a rear bearing support (490) for a first journal bearing (316) wherein the turbine-end journal bearing support (580) supports a second journal bearing (320) in the bearing housing (303).

4. The turbocharger of claim 1 wherein a portion of the support bar (600) with its radial supports (610) and (620) forms a substantially planar portion (630) above a portion of the cavity (496).

5. The turbocharger of claim 1 wherein a cavity portion (606) in the bearing housing (303) extends above the turbine-end bearing support (580).

6. A turbocharger (300) having a rotatable shaft (312) passing through a bearing housing (303) comprising:

a turbine-end journal bearing support (580) supporting a journal bearing (320) for the rotatable shaft (312) in the bearing housing (303) with a support bar (600) having radial supports (610) and (620) integral with each opposite side (492) and (494) of a cavity (496) of the bearing housing (303) wherein oil can flow in recesses (640) and (650) above the radial supports (610) and (620) adjacent to the journal bearing support (580), and

another journal bearing support (490) supporting a compressor-end journal bearing (316) for the rotatable shaft (312).

7. A turbocharger (300) having a rotatable shaft (312) passing through a bearing housing (303) comprising a turbine-end bearing support (580) for the rotatable shaft (312) in the bearing housing (303) with a support bar (600) having a radial support (610), (620) or rod portion (622) integral with and extending from a distal end of the turbine-end bearing support (580) extending from the bearing housing (303).

8. The turbocharger (300) of claim 7 wherein the support bar (600) has radial supports (610) and (620) connected to each opposite side (492) and (494) of a cavity (496) of the bearing housing (303) wherein oil can flow in recesses (640) and (650) above the radial supports (610) and (620), wherein each radial support (610) and (620) of the support bar (600) is integral with the corresponding side (492) and (494).

9. The turbocharger (300) of claim 7 wherein the rod portion (622) forms a bottom tie support bar (612) that supports a bottom of the turbine-end bearing support (580) and a bottom of another bearing support (490), and the bearing supports (580) and (490) are also top-supported by the bearing housing (303).

10. The turbocharger (300) of claim 9 wherein the rod portion (622) of the support bar (600) forms a substantially planar portion (630) above a portion of the cavity (496).

11. The turbocharger of claim 7 wherein a cavity portion (606) in the bearing housing (303) extends above the turbine-end bearing support (580).