Cylinder housing of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-10871123-B2
Application number	US-201816485666-A
Country	US
Kind code	B2
Filing date	Feb 14, 2018
Priority date	Feb 14, 2017
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

Aspects of the present disclosure are directed to a cylinder housing of an internal combustion engine. In one embodiment of the present disclosure, the cylinder housing includes at least two adjacently arranged cylinders, each of which includes a wet cylinder liner, a support structure, and a coolant jacket arranged between the support structure and the cylinder liner. The cylinder housing further including at least one screw receptacle for a cylinder head screw, and is positioned between at least two adjacently arranged cylinders in a region of at least one engine transverse plane.

First claim

The invention claimed is:

1. Cylinder housing of an internal combustion engine, the cylinder housing comprising:
at least two adjacently arranged cylinders, each of which includes
a wet cylinder liner,
a support structure which receives the wet cylinder liner, and
a coolant jacket is arranged between the support structure and the wet cylinder liner, the coolant jacket including a closed deck forming a cylinder head sealing surface;

at least one screw receptacle, configured and arranged to receive a cylinder head screw, and is positioned between the at least two adjacently arranged cylinders in a region of at least one engine transverse plane; and
wherein the support structures are free from each other in an intersection region of the at least one engine transverse plane, with an engine longitudinal plane containing a cylinder axes;
wherein the support structure, in a region adjoining the coolant jacket in a direction of a crankcase, has a conically shaped transition region, and wherein the conically shaped transition region tapers in the direction of the closed deck.

2. Cylinder housing according to claim 1 , characterized in that the minimum distance between two adjacent support structures in a region of the coolant jacket corresponds at least to half the cylinder head screw diameter.

3. The cylinder housing of claim 2 , wherein the minimum distance between two adjacent support structures in the region of the coolant jacket corresponds to at least to the cylinder head screw diameter.

4. The cylinder housing of claim 2 , characterized in that at least one screw receptacle is spaced from the deck.

5. The cylinder housing according to claim 1 , characterized in that at least one screw receptacle is spaced from the closed deck.

6. The cylinder housing of claim 5 , characterized in that at least one screw receptacle is arranged in a central region of the cylinder.

7. The cylinder housing according to claim 1 , characterized in that at least one screw receptacle is arranged in a central region of the cylinder.

8. The cylinder housing of claim 7 , characterized in that at least one screw receptacle is arranged in a central third of the cylinder.

9. The cylinder housing of claim 7 , characterized in that at least one screw receptacle borders laterally on support structures of two adjacent cylinders.

10. The cylinder housing of claim 7 , Characterized in that the support structure is formed hollow-cylindrical in the region of the coolant jacket.

11. The cylinder housing according to claim 1 , characterized in that the support structure is a hollow-cylinder in a region of the coolant jacket.

12. The cylinder housing according to claim 1 , characterized in that the support structures, in a region of a base of a conically shaped transition region, are connected to one another via an intermediate deck.

13. The cylinder housing according to claim 12 , characterized in that the intermediate deck is connected to a main bearing wall.

14. The cylinder housing according to claim 1 , characterized in that the coolant jacket is formed between a cylindrical inner wall of the support structure and a cylindrical outer wall of the cylinder liner.

15. The cylinder housing of claim 14 , characterized in that the coolant jacket is formed in an upper third of the cylinder.

16. The cylinder housing according to claim 1 , further includes a main bearing wall formed integrally with the cylinder housing, the main bearing wall is arranged between the at least two adjacently arranged cylinders in the region of the at least one engine transverse plane.

17. The cylinder housing of claim 16 , characterized in that, when installed within an internal combustion engine and during, operation of the internal combustion engine, the support structure is configured and arranged to be subjected to compressive forces in a region formed between the cylinder head sealing surface and the screw receptacle, and the remaining region of the support structure and the main bearing walls are configured and arranged to be subjected to tensile forces.

18. The cylinder housing of claim 1 , characterized in that, in the installed state during operation of the internal combustion engine, the support structure is configured and arranged to be subjected to compressive forces in a region formed between the cylinder head sealing surface and the screw receptacle, and the remaining region of the support structure and the main bearing walls are configured and arranged to be subjected to tensile forces.

19. The cylinder housing of claim 1 , characterized in that the support structure, in a region of the screw receptacle and in the direction of the crankcase, has a conically shaped transition region.

Assignees

• Avl List Gmbh

Inventors

• Feichtinger Stefan
• Stocker-Reicher Stefan
• Häusl Günter

Classifications

• F02F1/16 Primary

  Cylinder liners of wet type · CPC title

• F02F2001/106

  using a closed deck, i.e. the water jacket is not open at the block top face · CPC title

• F02F2007/0063

  Head bolts; Arrangements of cylinder head bolts · CPC title

• F02F7/0007

  Crankcases of engines with cylinders in line · CPC title

• G07C9/00912

  for safes, strong-rooms, vaults or the like · CPC title