Bearing housing body group of an exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-8926274-B2
Application number	US-99937009-A
Country	US
Kind code	B2
Filing date	Jun 26, 2009
Priority date	Jul 2, 2008
Publication date	Jan 6, 2015
Grant date	Jan 6, 2015

Abstract

The invention relates to a bearing housing body group ( 1 ) of an exhaust-gas turbocharger, having a housing ( 2 ) for a bearing arrangement of a rotor shaft ( 3 ); having a turbine wheel ( 4 ) on one end ( 5 ) of the rotor shaft ( 3 ); having a compressor wheel ( 6 ) on the opposite end ( 7 ) of the rotor shaft ( 3 ); and having a compressor-wheel-side housing cover ( 8 ) which can be fixed by means of a fastening device ( 9 ) in a compressor-wheel-side housing opening ( 10 ), wherein the fastening device ( 9 ) is designed as a bayonet connection.

First claim

The invention claimed is:

1. A bearing housing body group ( 1 ) of an exhaust-gas turbocharger comprising:
a housing ( 2 ) for a bearing arrangement of a rotor shaft ( 3 );
a turbine wheel ( 4 ) on one end ( 5 ) of the rotor shaft ( 3 );
a compressor wheel ( 6 ) on an opposite end ( 7 ) of the rotor shaft ( 3 ); and
a compressor-wheel-side housing cover ( 8 ) fixed by means of a fastening device ( 9 ) in a compressor-wheel-side housing opening ( 10 ), wherein the compressor-wheel-side housing cover ( 8 ) is located substantially entirely within the housing ( 2 ), wherein the compressor-wheel-side housing cover ( 8 ) is substantially flush with an axially outermost face of the housing ( 2 ), and wherein the fastening device ( 9 ) is a bayonet connection.

2. The bearing housing body group according to claim 1 , wherein the bayonet connection ( 9 ) has a web arrangement ( 11 ) on the housing cover ( 8 ) and a groove arrangement ( 12 ) in the housing opening ( 10 ).

3. The bearing housing body group according to claim 2 , wherein the web arrangement ( 11 ) has three webs which are arranged uniformly on the periphery of a web ring ( 21 ) of the housing cover ( 8 ) and which can be inserted into an annular groove arrangement ( 12 ) of the housing opening ( 10 ).

4. The bearing housing body group according to claim 3 , wherein the annular groove arrangement ( 12 ) includes three insertion recesses ( 13 , 14 ).

5. The bearing housing body group according to claim 1 , wherein the housing cover ( 8 ) has a holding groove ( 15 , 16 ) for holding an O-ring ( 17 ).

6. The bearing housing body group according to claim 5 , wherein the holding groove ( 15 ) is formed so as to be open at one of its two end sides.

7. The bearing housing body group according to claim 5 , wherein the holding groove ( 16 ) is formed so as to be closed at both end sides.

8. A bearing housing body group ( 1 ) of an exhaust-gas turbocharger comprising:
a housing ( 2 ) for a bearing arrangement of a rotor shaft ( 3 );
a turbine wheel ( 4 ) on one end ( 5 ) of the rotor shaft ( 3 );
a compressor wheel ( 6 ) on an opposite end ( 7 ) of the rotor shaft ( 3 ); and
a compressor-wheel-side housing cover ( 8 ) fixed by means of a fastening device ( 9 ) in a compressor-wheel-side housing opening ( 10 ), wherein the fastening device ( 9 ) is a bayonet connection, wherein the bayonet connection ( 9 ) has a web arrangement ( 11 ) on the housing cover ( 8 ) and an annular groove arrangement ( 12 ) in the housing opening ( 10 ),
wherein the annular groove arrangement ( 12 ) includes part ring grooves ( 24 ), wherein an end of each part ring groove ( 24 ) includes a recess ( 25 ) having a contact surface ( 26 ) and a latching edge ( 27 ).

9. A bearing housing body group ( 1 ) of an exhaust-gas turbocharger comprising:
a housing ( 2 ) for a bearing arrangement of a rotor shaft ( 3 );
a turbine wheel ( 4 ) on one end ( 5 ) of the rotor shaft ( 3 );
a compressor wheel ( 6 ) on an opposite end ( 7 ) of the rotor shaft ( 3 ); and
a compressor-wheel-side housing cover ( 8 ) fixed by means of a fastening device ( 9 ) in a compressor-wheel-side housing opening ( 10 ), wherein the fastening device ( 9 ) is a bayonet connection,
wherein a spring plate ( 18 ) for fixing an axial bearing ( 19 ) of the rotor shaft ( 3 ) is arranged between and directly operatively engages the axial bearing ( 19 ) and the housing cover ( 8 ).

Assignees

• Kuzi Hildwin
• Fitting Thomas
• Borgwarner Inc

Inventors

• Kuzi Hildwin
• Fitting Thomas

Classifications

• F01D25/162 Primary

  Bearing supports · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F02B37/00

  Engines characterised by provision of pumps driven at least for part of the time by exhaust · CPC title

• F05D2260/33

  with a bayonet coupling · CPC title