Bearing housing of an exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-9638060-B2
Application number	US-201214007155-A
Country	US
Kind code	B2
Filing date	Mar 19, 2012
Priority date	Apr 11, 2011
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A bearing housing ( 1 ) of an exhaust-gas turbocharger (EGT), having a mounting bore ( 2 ); a bearing device ( 3 ) which has two bearing bushes ( 4, 5 ) which are arranged in the mounting bore ( 2 ), between which bearing bushes is arranged a spacer ( 6 ); a rotational speed sensor ( 7 ) which engages into a sensor recess ( 8 ) of the spacer ( 6 ); and a locating pin ( 9 ) which is screwed into a pin bore ( 10 ) and which engages with its pin head ( 12 ) into a pin recess ( 11 ) of the spacer ( 6 ); wherein the pin recess ( 11 ) is formed as a slot.

First claim

The invention claimed is:

1. A bearing housing ( 1 ) of an exhaust-gas turbocharger (EGT), having
a mounting bore ( 2 );
a bearing device ( 3 ) which has two bearing bushes ( 4 , 5 ) which are arranged in the mounting bore ( 2 ), between which bearing bushes is arranged a spacer ( 6 ) having an oil supply bore ( 13 ), an oil discharge bore ( 14 ) arranged diametrically opposite the oil supply bore ( 13 ), a pin through-opening ( 11 ) and a sensor through-opening ( 8 ) arranged diametrically opposite the pin through-opening ( 11 );
a rotational speed sensor ( 7 ) which engages into the sensor through-opening ( 8 ) of the spacer ( 6 ); and
a locating pin ( 9 ) having a threaded part and a pin head ( 12 ), which is screwed at its threaded part into a pin bore ( 10 ) in the bearing housing ( 1 ) and which engages with its pin head ( 12 ) into the pin through-opening ( 11 ) of the spacer ( 6 );

wherein
the pin through-opening ( 11 ) is formed as a slot.

2. The bearing housing as claimed in claim 1 , wherein the sensor through-opening ( 8 ) is formed as a slot.

3. The bearing housing as claimed in claim 1 , wherein the pin through-opening ( 11 ) and the sensor through-opening ( 8 ) are formed symmetrically.

4. The bearing housing as claimed in claim 1 , wherein the spacer ( 6 ) has two symmetrically formed oil supply and oil discharge bores ( 13 , 14 ) arranged diametrically opposite one another.

5. The bearing housing as claimed in claim 1 , wherein the locating pin ( 9 ) is a screw with a threaded portion ( 9 A) adjoining the pin head ( 12 ).

6. The bearing housing as claimed in claim 1 , wherein the locating pin ( 9 ) is an internally situated cylinder head screw.

7. The bearing housing as claimed in claim 1 , wherein the rotational speed sensor ( 7 ) has a threaded portion ( 19 ) with a self-locking thread.

8. The bearing housing as claimed in claim 1 , wherein the diameter of the pin head is greater than the diameter of the pin threaded part.

9. A spacer assembly of an exhaust-gas turbocharger bearing housing ( 1 ) device ( 3 ), having
a spacer ( 6 ) having a cylindrical body ( 18 ) with first and second ends; a sensor through-opening ( 8 ) on one side of the body ( 18 ); a pin through-opening ( 11 ) on a side of the body ( 18 ) arranged diametrically opposite the sensor through-opening ( 8 ); and an oil supply bore ( 13 ) and, arranged diametrically opposite the oil supply bore ( 13 ), an oil discharge bore ( 14 ), wherein the pin through-opening ( 11 ) is formed as a slot, and
a locating pin ( 9 ) having a threaded part and a pin head ( 12 ), which is screwed at its threaded part into a pin bore ( 10 ) in the bearing housing ( 1 ) and which engages with its pin head ( 12 ) into the pin through-opening ( 11 ) of the spacer ( 6 ).

10. The spacer assembly as claimed in claim 9 , wherein the sensor through-opening ( 8 ) is formed as a slot.

11. The spacer assembly as claimed in claim 9 , wherein the pin through-opening ( 11 ) slot is axially elongate.

Assignees

• Watanpour Jens
• Baumgartl Andreas
• Hemer Josef-Hans
• Borgwarner Inc

Inventors

• Watanpour Jens
• Baumgartl Andreas
• Hemer Josef-Hans

Classifications

• F05D2240/50

  Bearings · CPC title

• F02B39/00

  Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00 · CPC title

• F01D25/166 Primary

  Sliding contact bearing (gas bearings F01D25/22) · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F01D25/16 Primary

  Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C) · CPC title