Insert and internal combustion engine comprising insert

Patent metadata

Field	Value
Publication number	US-10316971-B2
Application number	US-201314412151-A
Country	US
Kind code	B2
Filing date	Jun 28, 2013
Priority date	Jul 4, 2012
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

An insert that can be positioned in a gap between a first front face of a cylinder liner, the first front face facing a cylinder head, and a second front face of the cylinder head, the second front face facing the cylinder liner. The insert includes at least one compressible material.

First claim

The invention claimed is:

1. An insert for arrangement in a clearance volume between a first, top-most end face of a cylinder liner, the first, top-most end face facing a cylinder head, and a second end face of the cylinder head, the second end face facing the cylinder liner, wherein the insert comprises at least one compressible material;
wherein the insert has an outside diameter and an inside diameter; and
wherein the outside diameter and the inside diameter are matched geometrically to the clearance volume so that in an installed state the insert does not extend radially beyond a boundary between the combustion chamber and the clearance volume, wherein the insert further comprises a substrate material, the at least one compressible material being provided on an axially end-most surface of the substrate material.

2. The insert as claimed in claim 1 , wherein the at least one compressible material has properties so that, as seen in an axial direction of the cylinder liner, a force required to deform the insert to a minimum axial gap dimension, to be expected, of the clearance volume is small in comparison with a static force acting on a force introduction element in a fastening section of the cylinder liner.

3. The insert as claimed in claim 2 , wherein the force is from at least 4 to at most 8 kN.

4. The insert as claimed in claim 3 , wherein the force is from at least 5 to at most 7 kN.

5. The insert as claimed in claim 4 , wherein the force is 6 kN.

6. The insert as claimed in claim 4 , wherein the force is 6.4 kN.

7. The insert as claimed in claim 2 , wherein the force is from at least 0.5 to at most 2 kN.

8. The insert as claimed in claim 7 , wherein the force is from at least 1 to at most 1.5 kN.

9. The insert as claimed in claim 2 , wherein the force is 1.4 kN.

10. The insert as claimed in claim 1 , wherein the at least one compressible material comprises at least one of: a ceramic fiber felt; a woven ceramic fiber material; a ceramic fiber mat; a nonwoven ceramic fiber material; a metal; a metal alloy; and a graphite film.

11. The insert as claimed in claim 1 , wherein the at least one compressible material consists of one of a ceramic fiber felt; a woven ceramic fiber material; a ceramic fiber mat; a nonwoven ceramic fiber material; a metal; a metal alloy; and a graphite film.

12. The insert as claimed in claim 1 , wherein the insert consists of the at least one compressible material.

13. The insert as claimed in claim 1 , wherein the substrate material is at least one metal sheet.

14. The insert as claimed in claim 1 , wherein the at least one compressible material is arranged between two substrate elements that are annular and are arranged concentrically opposite one another.

15. The insert as claimed in claim 1 , wherein the at least one compressible material is a honeycomb structure.

16. The insert as claimed in claim 1 , wherein the insert comprises a half-bead.

17. The insert as claimed in claim 1 , wherein the insert is substantially annular.

18. An internal combustion engine, comprising:
at least one cylinder having a top end, wherein the at least one cylinder comprises: a cylinder liner having a first, top-most end face; and a cylinder head that has a second end face facing the first, top-most end face of the cylinder liner;
a force introduction element is provided so that a static retention force is introduced by the cylinder head into the cylinder liner in a region of the force introduction element, the force introduction element directly contacting the cylinder head and the cylinder liner;
and an insert according to claim 1 is arranged at least in an area in an interspace between the first, top-most end face and the second end face, the insert being a separate part from the force introduction element.

19. The internal combustion engine as claimed in claim 18 , wherein the insert is a separate component.

20. The internal combustion engine as claimed in claim 18 , wherein the insert is part of at least one of: a coke scraper ring; the cylinder liner; the cylinder head; a cylinder head gasket; and the force introduction element.

Assignees

• Mtu Friedrichshafen Gmbh

Inventors

• Schiliro Michele
• Ernst Anko
• Kläser-Jenewein Ludwig

Classifications

• F05C2201/021

  Aluminium · CPC title

• F02F11/005

  involving cylinder liners · CPC title

• F02F1/20

  characterised by constructional features providing for lubrication · CPC title

• B22D19/0009

  Cylinders, pistons · CPC title

• F02F11/002

  involving cylinder heads · CPC title