Turbocharger with dual-use mounting holes

Patent metadata

Field	Value
Publication number	US-9777747-B2
Application number	US-201514642621-A
Country	US
Kind code	B2
Filing date	Mar 9, 2015
Priority date	Mar 9, 2015
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A housing for a turbocharger includes a first outer surface, a second outer surface opposite the first outer surface, and a mounting hole extending between the first outer surface and the second outer surface. The mounting hole includes a first end opposite a second end and a counterbore formed at the first end. The counterbore includes threads that are configured to engage with threads on a shank of a lifting device. The mounting hole also includes a throughbore extending from the counterbore to the second end and configured to receive a fastener for mounting the turbocharger housing. The counterbore forms a first opening through the first outer surface of the turbocharger housing, and the throughbore forms a second opening through the second outer surface of the turbocharger housing. The mounting hole is configured to receive only one fastener or shank at a time.

First claim

What is claimed is:

1. A housing for a turbocharger, the turbocharger housing comprising:
a first outer surface;
a second outer surface opposite the first outer surface;
a mounting hole extending between the first outer surface and the second outer surface, the mounting hole including:
a first end opposite a second end,
a counterbore formed at the first end, the counterbore including threads that are configured to engage with threads on a shank of a lifting device, and
a throughbore extending from the counterbore to the second end and configured to receive a fastener for mounting the turbocharger housing;

wherein the counterbore forms a first opening through the first outer surface of the turbocharger housing and the throughbore forms a second opening through the second outer surface of the turbocharger housing,
wherein the mounting hole is configured to receive only one fastener or shank at a time.

2. The turbocharger housing of claim 1 , wherein the threads of the counterbore have a minor diameter that is larger than a diameter of the throughbore.

3. The turbocharger housing of claim 1 , wherein the counterbore extends to about 30 mm or less from the first outer surface.

4. The turbocharger housing of claim 1 , wherein the counterbore extends to between about 20 mm and about 30 mm from the first outer surface.

5. The turbocharger housing of claim 1 , wherein:
the turbocharger housing includes a bearing housing including bearings for supporting a shaft connecting a compressor wheel and a turbine wheel of the turbocharger; and
the bearing housing includes the first outer surface, the second outer surface, and the mounting hole.

6. The turbocharger housing of claim 5 , wherein:
the bearing housing includes a first end, a second end opposite the first end of the bearing housing, and a channel extending through the first end of the bearing housing and the second end of the bearing housing; and
the channel is configured to receive the shaft, the mounting hole having an axis that is generally perpendicular to an axis of the channel.

7. The turbocharger housing of claim 5 , wherein:
the turbocharger housing further includes a compressor housing configured to receive the compressor wheel and a turbine housing configured to receive the turbine wheel; and
the bearing housing includes a first flange fastened to the compressor housing and a second flange fastened to the turbine housing.

8. The turbocharger housing of claim 1 , wherein the mounting hole is one of a plurality of mounting holes in the bearing housing.

9. The turbocharger housing of claim 8 , wherein the plurality of mounting holes have axes that are generally parallel.

10. The turbocharger housing of claim 1 , wherein the first outer surface and the second outer surface are generally perpendicular to an axis of the mounting hole.

11. The turbocharger housing of claim 1 , wherein the lifting device includes a lifting eye.

12. A turbocharger comprising:
a compressor housing including a compressor wheel;
a turbine housing including a turbine wheel;
a shaft attached at a first end to the compressor wheel and attached at a second end to the turbine wheel; and
a bearing housing connecting the compressor housing to the turbine housing, the bearing housing including bearings for supporting the shaft, the bearing housing including:
a first outer surface,
a second outer surface opposite the first outer surface, and
a mounting hole extending between the first outer surface and the second outer surface, the mounting hole including;
a first end opposite a second end,
a counterbore formed at the first end of the mounting hole, the counterbore including threads that are configured to engage with threads on a shank of a lifting device,
a throughbore extending from the counterbore to the second end of the mounting hole and configured to receive a fastener for mounting the bearing housing;

wherein the counterbore forms, a first opening through the first outer surface of the bearing housing and the throughbore forms a second opening through the second outer surface of the bearing housing; and
wherein the mounting hole is configured to receive only one fastener or shank at a time.

13. The turbocharger of claim 12 , wherein the mounting hole is one of a plurality of mounting holes in the bearing housing.

14. The turbocharger of claim 13 , wherein each of the mounting holes has an axis that is generally perpendicular to an axis of the shaft.

15. The turbocharger of claim 13 , wherein the plurality of mounting holes are disposed around the shaft such that at least a first pair of the mounting holes is disposed on one side of the shaft and at least a second pair of the mounting holes is disposed on an opposite side of the shaft.

16. The turbocharger of claim 12 , wherein the hearing housing includes a first flange on a first end and a second flange on a second end opposite the first end of the bearing housing, the first flange being configured to connect to the compressor housing, the second flange being configured to connect to the turbine housing, the bearing housing including a channel configured to receive the shaft.

17. A method of mounting a turbocharger to a machine, the method comprising:
detaching a lifting device from a housing of the turbocharger by removing a shank of the lifting device from a counterbore in a mounting hole in the turbocharger housing, wherein the mounting hole extends between a first outer surface and a second outer surface of the turbocharger housing, and the second outer surface is opposite the first outer surface; and
after removing the shank, inserting a fastener through a throughbore in the mounting hole and attaching the fastener to the machine,
wherein the mounting hole has a first end and a second end, the counterbore is formed at the first end and forms a first opening through the first outer surface of the turbocharger housing, the throughbore is formed at the second end and forms a second opening through the second outer surface of the turbocharger housing.

18. The method of claim 17 , wherein:
removing the shank of the lifting device from the counterbore in the turbocharger housing includes disengaging threads on the shank from threads on the counterbore.

19. The method of claim 17 , further including using the lifting device to lift the turbocharger before removing the shank of the lifting device from the counterbore in the turbocharger housing.

20. The method of claim 17 , wherein the mounting hole is one of a plurality of mounting holes in the turbocharger housing, the lifting device is one of a plurality of lifting devices that are detached from the turbocharger housing, and the fastener is one of a plurality of fasteners that are inserted through the respective plurality of mounting holes.

Assignees

• Caterpillar Inc

Inventors

• Annati Richard E
• Powers Gary W
• Mccormack Jeffrey W
• Williams Thomas J

Classifications

• F05D2230/68

  using auxiliary equipment for lifting or holding · CPC title

• F02C6/12

  Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure · CPC title

• F05D2260/31

  Retaining bolts or nuts · CPC title

• F05D2250/281

  threaded · CPC title

• F05D2220/40

  in turbochargers · CPC title