Bearing housing of an exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-9739172-B2
Application number	US-201113816518-A
Country	US
Kind code	B2
Filing date	Aug 18, 2011
Priority date	Aug 24, 2010
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A bearing housing ( 1 ) of an exhaust-gas turbocharger, having a compressor-side housing flange ( 2 ), a central housing section ( 3 ) which is integrally connected to the housing flange ( 2 ) and in which a first partial section ( 4 ) of an oil chamber ( 5 ) is arranged; and a turbine-side housing section ( 6 ) which has a turbine-side housing flange ( 7 ) and in which a second partial section ( 8 ) of the oil chamber ( 5 ) is formed. The central housing section ( 3 ) and the turbine-side housing section ( 6 ) are formed in one piece. A bearing housing ( 9 ) which forms a separate component is inserted into the central housing section ( 3 ) and into the turbine-side housing section ( 6 ), with these delimiting the oil chamber ( 5 ).

First claim

The invention claimed is:

1. A bearing housing ( 1 ) of an exhaust-gas turbocharger, with
a compressor-side housing flange ( 2 ),
a turbine-side housing flange ( 7 ), and
a central housing section ( 3 ) which is integrally connected to the compressor-side housing flange ( 2 ) and turbine-side housing flange ( 7 ), and in which an oil inlet bore ( 20 ) having a single inlet opening and a single outlet opening is arranged; wherein
a bearing sleeve ( 9 ), having an outer circumferential surface, an inner cylindrical bore, and oil inflow ducts ( 11 , 12 ), each oil inflow duct having a single inlet opening and a single outlet opening, as a separate component is inserted into the central housing section ( 3 ) and fixed against rotation
an axially extending oil supply channel ( 4 ) in communication with the oil inlet bore ( 20 ) outlet opening and the oil inflow duct ( 11 , 12 ) inflow openings, and an oil collection chamber ( 5 ), are defined between the bearing sleeve ( 9 ) outer circumferential surface and the central housing section ( 3 ), said oil supply channel ( 4 ) and said oil collection chamber ( 5 ) being separated at the outer circumferential surface of the bearing sleeve ( 9 ) by a barrier, and
axially spaced journal bearings are inserted in the inner cylindrical bore of the bearing sleeve ( 9 ), wherein the oil inlet bore ( 20 ), oil supply channel ( 4 ) and oil inflow ducts ( 11 , 12 ) are in communication with the journal bearings, and

wherein the bearing housing extends axially between a compressor end and a turbine end, and wherein the bearing sleeve ( 9 ) extends axially in the direction of the turbine beyond the turbine end of the bearing housing ( 1 ).

2. The bearing housing ( 1 ) as claimed in claim 1 , wherein the bearing sleeve ( 9 ) is substantially cylindrical and of constant diameter to the extent housed in the bearing housing ( 1 ).

3. A bearing housing ( 1 ) of an exhaust-gas turbocharger, with
a compressor-side housing flange ( 2 ),
a turbine-side housing flange ( 7 ), and
a central housing section ( 3 ) which is integrally connected to the compressor-side housing flange ( 2 ) and turbine-side housing flange ( 7 ), and in which an oil inlet bore ( 20 ) having a single inlet opening and a single outlet opening is arranged; wherein
a bearing sleeve ( 9 ), having an outer circumferential surface, an inner cylindrical bore, and oil inflow ducts ( 11 , 12 ), each oil inflow duct having a single inlet opening and a single outlet opening, as a separate component is inserted into the central housing section ( 3 ) and fixed against rotation
an axially extending oil supply channel ( 4 ) in communication with the oil inlet bore ( 20 ) outlet opening and the oil inflow duct ( 11 , 12 ) inflow openings, and an oil collection chamber ( 5 ), are defined between the bearing sleeve ( 9 ) outer circumferential surface and the central housing section ( 3 ), said oil supply channel ( 4 ) and said oil collection chamber ( 5 ) being separated at the outer circumferential surface of the bearing sleeve ( 9 ) by a barrier, and
axially spaced journal bearings are inserted in the inner cylindrical bore of the bearing sleeve ( 9 ), wherein the oil inlet bore ( 20 ), oil supply channel ( 4 ) and oil inflow ducts ( 11 , 12 ) are in communication with the journal bearings, and
a water chamber ( 10 ) is provided which is separate from the oil chamber ( 5 ) and which is delimited by the central housing section ( 3 ) and the bearing sleeve ( 9 ).

4. The bearing housing ( 1 ) as claimed in claim 3 , wherein the water chamber ( 10 ) is of semi-circular design.

5. The bearing housing ( 1 ) as claimed in claim 3 , wherein the water chamber ( 10 ) is provided with two water ports ( 13 , 14 ).

6. The bearing housing ( 1 ) as claimed in claim 3 , wherein the water chamber ( 10 ) has only one water port ( 13 ).

7. A bearing housing ( 1 ) of an exhaust-gas turbocharger, with
a compressor-side housing flange ( 2 ),
a turbine-side housing flange ( 7 ), and
a central housing section ( 3 ) which is integrally connected to the compressor-side housing flange ( 2 ) and turbine-side housing flange ( 7 ), and in which an oil inlet bore ( 20 ) having a single inlet opening and a single outlet opening is arranged; wherein
a bearing sleeve ( 9 ), having an outer circumferential surface, an inner cylindrical bore, and oil inflow ducts ( 11 , 12 ), each oil inflow duct having a single inlet opening and a single outlet opening, as a separate component is inserted into the central housing section ( 3 ) and fixed against rotation
an axially extending oil supply channel ( 4 ) in communication with the oil inlet bore ( 20 ) outlet opening and the oil inflow duct ( 11 , 12 ) inflow openings, and an oil collection chamber ( 5 ), are defined between the bearing sleeve ( 9 ) outer circumferential surface and the central housing section ( 3 ), said oil supply channel ( 4 ) and said oil collection chamber ( 5 ) being separated at the outer circumferential surface of the bearing sleeve ( 9 ) by a barrier, and
axially spaced journal bearings are inserted in the inner cylindrical bore of the bearing sleeve ( 9 ), wherein the oil inlet bore ( 20 ), oil supply channel ( 4 ) and oil inflow ducts ( 11 , 12 ) are in communication with the journal bearings, and
a heat decoupling chamber ( 25 ) is provided
which, at its end pointing toward the shaft ( 16 ),
is closed off by the bearing sleeve ( 9 ).

Assignees

• Hornbach Johannes
• Becker Martin
• Borgwarner Inc

Inventors

• Hornbach Johannes
• Becker Martin

Classifications

• F16C17/26

  Systems consisting of a plurality of sliding-contact bearings · CPC title

• Y10T29/49988

  Metal casting · CPC title

• F16C17/18

  with floating brasses or brushing, rotatable at a reduced speed {(F16C17/03, F16C17/06 take precedence)} · CPC title

• B23P17/00

  Metal-working operations, not covered by a single other subclass or another group in this subclass · CPC title

• F16C2360/24

  Turbochargers · CPC title