Turbine-end bearing support and cooling system

Patent metadata

Field	Value
Publication number	US-2016130976-A1
Application number	US-201414898483-A
Country	US
Kind code	A1
Filing date	Jun 25, 2014
Priority date	Jul 1, 2013
Publication date	May 12, 2016
Grant date	—

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 ).

First claim

What is claimed is:

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 ).

Assignees

• Borgwarner Inc

Inventors

• Bucking Michael

Classifications

• F05D2220/40

  in turbochargers · CPC title

• F05D2240/60

  Shafts · CPC title

• F01D25/162 Primary

  Bearing supports · CPC title

• F01D25/24

  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 title

• F05D2240/24

  for turbines · CPC title