Cylinder head gasket with one carrier layer and at least one insert

Patent metadata

Field	Value
Publication number	US-11512664-B2
Application number	US-202017012693-A
Country	US
Kind code	B2
Filing date	Sep 4, 2020
Priority date	Sep 6, 2019
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A cylinder head gasket with a carrier layer and at least one inserted sealing element, wherein the inserted sealing element has a passage opening for combustion gas, the inserted sealing element is fastened on the carrier layer on an outer side which is spaced apart from the passage opening, and the inserted sealing element has at least a first layer and at least one further layer. An engine component comprising the cylinder head gasket is disclosed, the engine component having an engine block unit, a cylinder sleeve unit which delimits the engine block unit at least in regions from a combustion chamber, and a cylinder head unit, wherein the cylinder head gasket is arranged between the cylinder head unit on one hand and the engine block unit and the cylinder sleeve unit on the other hand.

First claim

The invention claimed is:

1. A cylinder head gasket with a carrier layer and at least one inserted sealing element, wherein
the inserted sealing element has a passage opening for combustion gas;
the inserted sealing element is fastened on the carrier layer on an outer side which is spaced apart from the passage opening;
the inserted sealing element has at least a first layer and at least one further layer; and
exactly one layer of the inserted sealing element is welded to the carrier layer via a weld bead at an interface edge of the exactly one layer and a side edge of the carrier layer.

2. The cylinder head gasket according to claim 1 , wherein the first layer of the inserted sealing element is a plain metal sheet layer.

3. The cylinder head gasket according to claim 2 , wherein the plain metal sheet layer of the inserted sealing element and the further layer of the inserted sealing element are welded together.

4. The cylinder head gasket according to claim 1 , wherein the plain metal sheet layer of the inserted sealing element is welded to the carrier layer and/or, in the case of an inserted sealing element with three layers, a middle layer of the inserted sealing element is welded to the carrier layer.

5. The cylinder head gasket according to claim 1 , wherein a distance between the further layer and carrier layer is greater than zero.

6. The cylinder head gasket according to claim 1 , wherein the carrier layer, in a plane running parallel to the main plane of extent of the cylinder head gasket, has at least one nose pointing in the direction of the passage opening of the inserted sealing element on which the inserted sealing element is fastened.

7. The cylinder head gasket according to claim 6 , wherein the carrier layer, in the region of a free end of the at least one nose, has a lesser material thickness M Red than the material thickness M 1 in a region adjoining the nose.

8. The cylinder head gasket according to claim 7 , wherein a reduction in the material thickness M 1 -M Red of the carrier layer is greater than a material thickness M a of the first layer.

9. The cylinder head gasket according to claim 6 , wherein the nose is arranged in a region of the carrier layer in which the inner edge of the carrier layer relative to the rest of the circumambient inner edge is set back.

10. The cylinder head gasket according to claim 6 , wherein the inserted sealing element is fastened on the carrier layer exclusively on the at least one nose of the carrier layer.

11. The cylinder head gasket according to claim 1 , wherein a material thickness measured perpendicularly to the main plane of extent of the cylinder head gasket is greater for the inserted sealing element than for the carrier layer by more than 5% and/or less than 30% thicker.

12. The cylinder head gasket according to claim 1 , wherein the further layer has a sealing element surrounding the passage opening, with the sealing element being moulded into or embossed into the further layer.

13. The cylinder head gasket according to claim 1 , wherein the first layer, in a plane running parallel to the main plane of extent of the cylinder head gasket, has at least one nose pointing away from the passage opening of the inserted sealing element, and is fastened on the nose of the carrier layer.

14. The cylinder head gasket according to claim 13 , wherein the further layer, in a plane running parallel to the main plane of extent of the cylinder head gasket, has at least one protrusion pointing away from the passage opening of the inserted sealing element, which protrusion protrudes across the first layer, and the further layer is welded to the first layer at the protrusion, with an edge of the first layer on a face of the further layer.

15. The cylinder head gasket according to claim 14 , wherein the protrusion of the further layer and the nose of the first layer, in a projection onto the main plane of extent of the cylinder head gasket, partially overlap, with two protrusions per nose, in the projection being arranged in each case partially next to the nose.

16. The cylinder head gasket according to claim 1 , wherein the first layer is arranged on a side of the inserted sealing element which in the installed state of the cylinder head gasket faces a cylinder head unit.

17. The cylinder head gasket according to claim 1 , wherein the cylinder head gasket has a plurality of inserted sealing elements which are arranged in a row.

18. The cylinder head gasket according to claim 17 , wherein an angle which is measured with a centre point of the passage opening of the respective inserted sealing elements as a vertex between a point of the shortest distance of the respective inserted sealing element from a next-adjacent inserted sealing element and the nose of the carrier layer and/or the nose of the first layer and/or the protrusion of the further layer is at least 15°.

19. An engine component, with an engine block unit, a cylinder sleeve unit which delimits the engine block unit at least in regions from a combustion chamber, and a cylinder head unit, wherein a cylinder head gasket according to claim 1 is arranged between the cylinder head unit on one hand and the engine block unit and the cylinder sleeve unit on the other hand.

20. The engine component according to claim 19 , wherein a first gap, in particular in the shape of a ring segment, is present between the engine block unit and cylinder sleeve unit, which gap, at least in regions perpendicularly to the main plane of extent of the cylinder head gasket, continues in a second gap in the shape of a ring segment, between the carrier layer and inserted sealing element.

21. The engine component according to claim 20 , wherein the second gap, at least outside the nose and/or protrusion regions, is larger than the first gap.

22. A cylinder head gasket with a carrier layer and at least one inserted sealing element, wherein
the inserted sealing element has a passage opening for combustion gas;
the inserted sealing element is fastened on the carrier layer on an outer side which is spaced apart from the passage opening;
the inserted sealing element has at least a first layer and at least one further layer;
the first layer is a plain metal sheet layer;
the plain metal sheet layer and the further layer are welded together;
exactly one layer of the inserted sealing element is welded to the carrier layer at an interface edge of the exactly one layer;
the inserted sealing element is fastened on the carrier layer with an elastomer;
wherein a section of the first layer of the inserted sealing element is embedded in the elastomer and the elastomer is attached to the carrier layer; and
the elastomer containing one or more fluororubbers (FKM), and/or hydrogenated nitrile butyl rubbers (HNBR), and/or ethylene propylene diene rubbers (EPDM), and/or acrylonitrile butadiene rubbers (NBR), and/or butyl rubbers (IIR), and/or chlorosulphonated polyethylene rubbers (CSM), and/or ethylene acrylate rubbers (AEM), and/or fluoroalkyl silicones (FMQ), and/or fluoro vinyl methyl silicones (FVMQ), and/or perfluororubbers (FFKM), and/or phenyl silicones (PMQ), and/or phenyl vinyl silicones (PVMQ), and/or polyacrylate rubbers (ACM), and/or vinyl methyl silicones (VMQ).

23. The cylinder head gasket according to claim 22 , wherein the inserted sealing element is fastened on the carrier layer circumferentially on the outer side with exactly one layer of the inserted sealing element.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Salzmann Jochen
• Achatz Paul
• Schlegel Corney
• Stauch Matthias

Classifications

• B32B15/01

  all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)} · CPC title

• F02F11/002 Primary

  involving cylinder heads · CPC title

• F16J15/123 Primary

  Details relating to the edges of the packing · CPC title

• B32B3/30

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• F16J15/0818

  Flat gaskets · CPC title