Turbocharger bearing damper assembly

Patent metadata

Field	Value
Publication number	US-9745992-B2
Application number	US-201514840011-A
Country	US
Kind code	B2
Filing date	Aug 30, 2015
Priority date	Aug 30, 2015
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A turbocharger system can include a housing that includes a bore defined at least in part by a bore wall; a rolling element bearing unit that includes an outer race; and a mixed-element damper assembly disposed at least in part between the outer race and the bore wall where the mixed-element damper assembly includes a lobed-spring element and a squeeze film damper element.

First claim

What is claimed is:

1. A turbocharger system comprising:
a housing that comprises a bore defined at least in part by a bore wall;
a rolling element bearing unit that comprises an outer race; and
a mixed-element damper assembly disposed at least in part between the outer race and the bore wall wherein the mixed-element damper assembly comprises a lobed-spring element and a squeeze film damper element and wherein the squeeze film damper element comprises a squeeze film damper ring element.

2. The turbocharger system of claim 1 wherein the lobed-spring element comprises radially inwardly extending lobes.

3. The turbocharger system of claim 2 wherein the squeeze film damper element is disposed at least in part radially between the radially inwardly extending lobes and the outer race.

4. The turbocharger system of claim 1 wherein the lobed-spring element comprises radially outwardly extending lobes.

5. The turbocharger system of claim 4 wherein the lobed-spring element comprises radially inwardly extending lobes.

6. The turbocharger system of claim 4 wherein the radially outwardly extending lobes contact the bore wall.

7. The turbocharger system of claim 1 comprising at least two lobed-spring elements.

8. The turbocharger system of claim 7 wherein at least two of the two lobed-spring elements differ in lobe shape of radially inwardly extending lobes.

9. The turbocharger system of claim 1 wherein the squeeze film damper element comprises a lubricant opening.

10. The turbocharger system of claim 1 wherein the squeeze film damper element defines a low pressure squeeze film space and a high pressure squeeze film space.

11. The turbocharger system of claim 1 wherein the mixed-element damper assembly comprises keys and keyways that orient the lobed-spring element with respect to the squeeze film damper element.

12. The turbocharger system of claim 1 comprising an end cap that is coupled to the lobed-spring element that is coupled to a spacer that is coupled to another lobed-spring element.

13. The turbocharger system of claim 12 comprising another spacer that is coupled to the other lobed-spring element.

14. The turbocharger system of claim 1 wherein the lobed-spring element and the squeeze film damper element comprise compressor side elements and further comprising another lobed-spring element and another squeeze film damper element that comprise turbine side elements.

15. The turbocharger system of claim 1 wherein the lobed-spring element and the squeeze film damper element act in series.

16. The turbocharger system of claim 15 comprising another lobed-spring element that acts in parallel to the in series elements.

17. A turbocharger system comprising:
a housing that comprises a bore defined at least in part by a bore wall;
a rolling element bearing unit that comprises an outer race; and
a mixed-element damper assembly disposed at least in part between the outer race and the bore wall wherein the mixed-element damper assembly comprises a lobed-spring element and a squeeze film damper element and wherein the squeeze film damper element defines a low pressure squeeze film space and a high pressure squeeze film space.

18. A turbocharger system comprising:
a housing that comprises a bore defined at least in part by a bore wall;
a rolling element bearing unit that comprises an outer race; and
a mixed-element damper assembly disposed at least in part between the outer race and the bore wall wherein the mixed-element damper assembly comprises a lobed-spring element and a squeeze film damper element and wherein the mixed-element damper assembly comprises keys and keyways that orient the lobed-spring element with respect to the squeeze film damper element.

19. A turbocharger system comprising:
a housing that comprises a bore defined at least in part by a bore wall;
a rolling element bearing unit that comprises an outer race; and
a mixed-element damper assembly disposed at least in part between the outer race and the bore wall wherein the mixed-element damper assembly comprises a lobed-spring element and a squeeze film damper element and wherein the lobed-spring element and the squeeze film damper element act in series.

20. The turbocharger system of claim 19 comprising another lobed-spring element that acts in parallel to the in series elements.

Assignees

• Honeywell Int Inc

Inventors

• Barber Timothy Daniel
• Hindle Timothy
• Gjika Kostandin
• Talbert Paul
• Young Ken
• Davis Toren S

Classifications

• F16C19/184

  in O-arrangement · CPC title

• F16C19/18

  with two or more rows of balls · CPC title

• F04D29/059 Primary

  Roller bearings · CPC title

• F16F15/0237

  involving squeeze-film damping · CPC title

• F16C27/045

  with a fluid film, e.g. squeeze film damping · CPC title