Pre-chamber and internal combustion engine

Patent metadata

Field	Value
Publication number	US-12078094-B2
Application number	US-202118566624-A
Country	US
Kind code	B2
Filing date	Jun 2, 2021
Priority date	Jun 2, 2021
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

Pre-chamber component for an internal combustion engine comprising a longitudinal axis and a gasket for sealing a coolant jacket disposed around the pre-chamber component against a main combustion chamber of the internal combustion engine, which gasket can be braced against a cylinder head of the internal combustion engine, wherein a flange is provided on the pre-chamber component which flange is axially distanced from the gasket along the longitudinal axis in a direction away from the main combustion chamber when the pre-chamber component is mounted in the cylinder head, wherein there are provided a plurality of through holes through the flange which end in a space between the gasket and the flange.

First claim

The invention claimed is:

1. A system, comprising:
a pre-chamber component for an internal combustion engine comprising a longitudinal axis and a gasket for sealing a coolant jacket disposed around the pre-chamber component against a main combustion chamber of the internal combustion engine, wherein the gasket is configured to be braced against a cylinder head of the internal combustion engine, wherein the pre-chamber component comprises a flange that is axially distanced from the gasket along the longitudinal axis in a direction away from the main combustion chamber when the pre-chamber component is mounted in the cylinder head, wherein the flange comprises a plurality of through holes ending in a space between the gasket and the flange.

2. The system according to claim 1 , wherein the plurality of through holes are oriented towards the gasket.

3. The system according to claim 1 , wherein the plurality of through holes are configured to direct at least a portion of a coolant onto the gasket when the coolant flows through the plurality of through holes from a side of the flange facing away from the gasket.

4. The system according to claim 1 , wherein the plurality of through holes are at an angle between 0° and 40° relative to the longitudinal axis when viewed in a cross section through the respective through hole and the longitudinal axis.

5. The system according to claim 1 , wherein the plurality of through holes begin on a first axial surface of the flange facing away from the gasket and/or end on a second axial surface facing towards the gasket.

6. The system according to claim 1 , wherein a ratio of the distance between the plurality of through holes and a diameter of the plurality of through holes is less than three.

7. The system according to claim 1 , wherein the plurality of through holes are evenly spaced around the flange.

8. The system according to claim 1 , wherein a flange diameter of the flange is larger than a gasket diameter of the gasket.

9. The system according to claim 1 , comprising a cylinder head having the pre-chamber component, wherein the gasket is braced against a fire plate of the cylinder head.

10. The system according to claim 8 , wherein a coolant jacket is disposed around the pre-chamber component.

11. The system according to claim 10 , further comprising a pump configured to pump a coolant through a cooling circuit, wherein the plurality of through holes are in fluid communication with the cooling circuit via the coolant jacket, such that the coolant flows through the plurality of through holes in a direction towards the gasket.

12. The system according to claim 8 , wherein a peripheral surface of the flange is circumferentially in contact with the cylinder head around the complete circumference of the flange.

13. The system according to claim 1 , comprising the internal combustion engine having the pre-chamber component.

14. The system according to claim 13 , comprising a generator driven by the internal combustion engine.

15. The system according to claim 1 , wherein the plurality of through holes comprises at least ten through holes configured to impinge a coolant on the gasket.

16. A system, comprising:
a pre-chamber component of an internal combustion engine, wherein the pre-chamber component comprises:
a body having a pre-chamber volume; and
a flange extending circumferentially about the body, wherein the flange comprises a plurality of through holes, and the plurality of through holes are configured to route a coolant to a gasket between the body and a cylinder head of the internal combustion engine.

17. The system according to claim 16 , comprising the gasket disposed about the body and spaced apart from the plurality of through holes.

18. The system according to claim 17 , comprising the internal combustion engine having the pre-chamber component coupled to the cylinder head, wherein the gasket is configured to seat against a corresponding portion of the cylinder head.

19. A method, comprising:
routing a coolant flow through a plurality of through holes in a flange of a body of a pre-chamber component of an internal combustion engine, wherein the body comprises a pre-chamber volume, and the flange extends circumferentially about the body; and
cooling a gasket disposed about the body between the pre-chamber and a cylinder head of the internal combustion engine via the coolant flow.

20. The method according to claim 19 , wherein cooling the gasket comprises impinging the coolant flow on the gasket.

Assignees

• Innio Jenbacher Gmbh & Co Og

Inventors

• Fankhauser Thomas

Classifications

• F02B19/16

  Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10 · CPC title

• F02F11/002

  involving cylinder heads · CPC title

• F02F1/16

  Cylinder liners of wet type · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title

• F02F1/40

  cylinder heads with means for directing, guiding, or distributing liquid stream · CPC title