Bearing frame or cylinder head cover of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-9512872-B2
Application number	US-201414222289-A
Country	US
Kind code	B2
Filing date	Mar 21, 2014
Priority date	Mar 22, 2013
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A bearing frame or cylinder head cover of an internal combustion engine may include at least one camshaft mounted therein. The camshaft may be tunnel-mounted in at least two bearing openings arranged along a bearing channel. The bearing openings may enclose the camshaft. At least one axial bearing disc may be arranged on the camshaft. The bearing frame or cylinder head cover may have at least one recess which is open towards the camshaft. The at least one recess may be configured to circumferentially guide the axial bearing disc via two opposing axial bearing end faces of the axial bearing disc interacting with a side wall region of at least one side wall of the at least one recess, thereby forming an axial bearing for the camshaft.

First claim

The invention claimed is:

1. A bearing frame or cylinder head cover of an internal combustion engine, comprising: at least one camshaft mounted therein,
the at least one camshaft being tunnel-mounted in at least two bearing openings arranged along a bearing channel, wherein the at least two bearing openings enclose the at least one camshaft,
at least one axial bearing disc arranged on the at least one camshaft,
wherein the bearing frame or the cylinder head cover has at least one recess which is open towards the at least one camshaft, the at least one recess configured to circumferentially guide the at least one axial bearing disc via two opposing axial bearing end faces of the at least one axial bearing disc interacting with a side wall region of at least one side wall of the at least one recess, thereby forming an axial bearing for the at least one camshaft, and
wherein the camshaft includes an oil hole via which oil supply for lubricating the at least one axial bearing disc is delivered, wherein the oil hole in the camshaft has a greater diameter than an oil hole in the at least one axial bearing disc.

2. The bearing frame or cylinder head cover according to claim 1 , wherein the at least one camshaft is mounted in a radial direction via at least one anti-friction bearing.

3. The bearing frame or cylinder head cover according to claim 1 , wherein the at least one camshaft is mounted in a radial direction via at least one slide bearing.

4. The bearing frame or cylinder head cover according to claim 1 , wherein the oil hole of the at least one axial bearing disc can be supplied with oil through at least one of the bearing frame, the camshaft and the cylinder head cover.

5. The bearing frame or cylinder head cover according to claim 1 , wherein the at least one axial bearing disc is configured as a sensor wheel.

6. The bearing frame or cylinder head cover according to claim 1 , further comprising a cap fitted over the at least one axial bearing disc and secured to the bearing frame or the cylinder head cover.

7. The bearing frame or cylinder head cover according to claim 2 , wherein the at least one anti-friction bearing includes a needle bearing.

8. The bearing frame or cylinder head cover according to claim 4 , further comprising a cap fitted over the at least one axial bearing disc and secured to the bearing frame or the cylinder head cover.

9. An internal combustion engine, comprising: at least one of a bearing frame and a cylinder head cover;
at least one camshaft tunnel-mounted in at least two bearing openings arranged along a bearing channel, the at least two bearing openings enclosing the at least one camshaft; and
at least one axial bearing disc arranged on the at least one camshaft;
wherein at least one of the bearing frame and cylinder head cover includes at least one recess which is open towards the at least one camshaft, the at least one recess configured to circumferentially guide the at least one axial bearing disc via two opposing axial bearing end faces of the at least one axial bearing disc interacting with a side wall region of at least one side wall of the at least one recess, thereby forming an axial bearing for the at least one camshaft; and
wherein the at least one camshaft includes an oil hole via which oil supply for lubricating the at least one axial bearing disc is delivered, and wherein the oil hole in the at least one camshaft has a greater diameter than an oil hole in the at least one bearing disc.

10. The internal combustion engine according to claim 9 , wherein the at least one camshaft is mounted in a radial direction via at least one anti-friction bearing.

11. The internal combustion engine according to claim 9 , wherein the oil hole of the at least one axial bearing disc can be supplied with oil through at least one of the bearing frame, the at least one camshaft and the cylinder head cover.

12. The internal combustion engine according to claim 9 , further comprising a cap fitted over the at least one axial bearing disc and secured to at least one of the bearing frame and the cylinder head cover.

13. The internal combustion engine according to claim 9 , wherein the at least one axial bearing disc is configured as a sensor wheel.

14. The internal combustion engine according to claim 10 , wherein the at least one anti-friction bearing includes a needle bearing.

15. The internal combustion engine according to claim 10 , wherein the at least one anti-friction bearing is a slide bearing.

16. A mounting frame of an internal combustion engine, comprising:
at least two bearing openings arranged along a bearing channel;
a camshaft tunnel-mounted in the at least two bearing openings, wherein the at least two bearing openings enclose the camshaft;
an axial bearing disc arranged on the camshaft;
wherein the mounting frame has at least one recess open towards the camshaft, the at least one recess configured to circumferentially guide the axial bearing disc to define an axial bearing for the camshaft via two opposing axial bearing end faces of the axial bearing disc interacting with a side wall region of at least one side wall of the at least one recess; and
wherein the axial bearing disc includes an oil hole for supplying oil, and wherein the oil hole in the axial bearing disc has a smaller diameter than an oil hole extending radially through the camshaft.

17. The mounting frame according to claim 16 , wherein the mounting frame is a bearing frame or a cylinder head cover.

18. The mounting frame according to claim 16 , wherein the oil hole in the camshaft is aligned with the oil hole in the bearing disc.

19. The mounting frame according to claim 16 , wherein the camshaft is mounted in a radial direction via at least one anti-friction bearing.

20. The mounting frame according to claim 16 , wherein the axial bearing disc is configured as a sensor wheel.

Assignees

• Mahle Int Gmbh

Inventors

• Menonna Antonio
• Steichele Stefan
• Steinmetz Christoph

Classifications

• B23P2700/02

  Camshafts · CPC title

• F01L2001/0476

  Camshaft bearings · CPC title

• F16C17/04 Primary

  for axial load only · CPC title

• F16C21/00

  Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement (F16C17/24, F16C19/52 take precedence) · CPC title

• Y10T29/49865

  by temperature differential [e.g., shrink fit] · CPC title