Bearing arrangement

Patent metadata

Field	Value
Publication number	US-9410577-B2
Application number	US-201314103269-A
Country	US
Kind code	B2
Filing date	Dec 11, 2013
Priority date	Dec 11, 2012
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A bearing arrangement may include at least one sliding bearing having a polymer coating. The bearing arrangement may bear a camshaft, and at least one of the polymer coating is applied to the camshaft, and the polymer coating is arranged in a bearing ring. An oil trough for collecting oil may be provided on at least one of the bearing ring and a cylinder head which receives the bearing ring.

First claim

The invention claimed is:

1. A bearing arrangement, comprising at least one sliding bearing having a polymer coating, wherein the bearing arrangement bears a camshaft, and at least one of:
the polymer coating is applied to the camshaft, and
the polymer coating is arranged in a bearing ring, wherein an oil trough for collecting oil is provided on at least one of the bearing ring and a cylinder head which receives the bearing ring;
wherein at least a portion of the polymer coating has an oil-film-forming structure in the form of depressions; and
wherein the polymer coating includes metallic particles.

2. The bearing arrangement according to claim 1 , wherein an oil supply channel is arranged in the cylinder head, the channel opening out at a bearing point, wherein the bearing point is in sliding contact with the polymer coating applied to the camshaft.

3. The bearing arrangement according to claim 1 , wherein the bearing ring has at least one positioning element on its side facing the cylinder head, the at least one positioning element engages in a recess formed in the cylinder head thereby positioning the bearing ring relative to the cylinder head.

4. The bearing arrangement according to claim 1 , wherein the bearing ring is formed as a sheet metal part.

5. The bearing arrangement according to claim 1 , wherein the polymer coating has at least one of a film-forming and oil-conveying structure.

6. The bearing arrangement according to claim 1 , wherein the polymer coating contains at least one of polyimide, acrylate, polytetrafluoroethylene (PTFE) and epoxy resin.

7. The bearing arrangement according to claim 6 , wherein the polymer coating contains at least one of metallic particles and polytetrafluoroethylene particles in a concentration of 1-15% by volume.

8. The bearing arrangement according to claim 1 , wherein the camshaft has a raised bearing region in which the at least one sliding bearing with the polymer coating runs.

9. The bearing arrangement according to claim 8 , wherein the raised bearing region comprises an enlarged diameter of the camshaft.

10. The bearing arrangement according to claim 3 , wherein at least one of the positioning elements includes beads formed integrally with the bearing ring.

11. The bearing arrangement according to claim 3 , wherein the bearing ring is formed as a sheet metal part.

12. The bearing arrangement according to claim 1 , wherein the polymer coating contains at least one of metallic particles and polytetrafluoroethylene particles in a concentration of 1-15% by volume.

13. The bearing arrangement according to claim 1 , wherein the polymer coating includes at least one of aluminum flakes and ceramic particles.

14. An internal combustion engine, comprising:
a camshaft;
a bearing arrangement bearing the camshaft, the bearing arrangement including at least one sliding bearing having a polymer coating, wherein at least one of:
the polymer coating is applied to the camshaft, and
the polymer coating is arranged in a bearing ring, wherein an oil trough for collecting oil is provided on at least one of the bearing ring and a cylinder head which receives the bearing ring;

wherein at least a portion of the polymer coating has an oil-film-forming structure in the form of depressions including at least one of grooves and furrows; and
wherein the polymer coating includes metallic particles.

15. The internal combustion engine according to claim 14 , wherein the bearing arrangement includes an oil supply channel arranged in the cylinder head, the channel opening out at a bearing point.

16. The internal combustion engine according to claim 15 , wherein the bearing point is in sliding contact with the polymer coating applied to the camshaft.

17. The internal combustion engine according to claim 14 , wherein the bearing ring includes at least one positioning element on its side facing the cylinder head, wherein the at least one positioning element engages in a recess formed in the cylinder head thereby positioning the bearing ring in the axial direction relative to the cylinder head.

18. The internal combustion engine according to claim 14 , wherein the camshaft has a raised bearing region in which the at least one sliding bearing with the polymer coating runs.

19. A bearing arrangement, comprising:
at least one sliding bearing including a bearing ring and a polymer coating arranged in the bearing ring, the bearing arrangement bearing a camshaft; and
a cylinder head that receives the bearing ring, an oil trough for collecting oil being provided in the cylinder head;
wherein at least a portion of the polymer coating has an oil-film-forming structure in the form of at least one of grooves and furrows.

Assignees

• Mahle Int Gmbh

Inventors

• Brodbeck Luke
• Carter Jeff
• Schneider Falk

Classifications

• F01L1/46

  Component parts, details, or accessories, not provided for in preceding subgroups · CPC title

• F16C33/106

  Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid · CPC title

• F16C33/203 Primary

  Multilayer structures, e.g. sleeves comprising a plastic lining · CPC title

• F16C2208/40

  Imides, e.g. polyimide [PI], polyetherimide [PEI] (F16C2208/58 takes precedence) · CPC title

• F16C2208/86

  Epoxy resins · CPC title