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US 12,025,050 B2Granted
Pre-chamber and method for producing a pre-chamber
AssigneeInnio Jenbacher GmbH & Co OG
InventorsWolfgang Fimml, Nikolaus Spyra, Jakub Pinkowicz
Life of this patent
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Abstract
Pre-chamber for an internal combustion engine, preferably gas engine, comprising: a pre-chamber body; a pre-chamber volume which is surrounded by the pre-chamber body; and a pre-chamber tip portion comprising at least two, preferably more than two, spray nozzles, wherein the at least two spray nozzles are in fluid communication with the pre-chamber volume, and the pre-chamber tip portion is affixed to the pre-chamber body by a welding process or a brazing process; wherein the pre-chamber body consists of a material with higher thermal conductivity than the pre-chamber tip portion.
Claims25
A system, comprising:
- a pre-chamber for an internal combustion engine, comprising:
- a pre-chamber body;
- a pre-chamber volume surrounded by the pre-chamber body;
- and
- a pre-chamber tip portion comprising at least two spray nozzles, wherein the at least two spray nozzles are in fluid communication with the pre-chamber volume, and the pre-chamber tip portion is affixed to the pre-chamber body by a welded joint or a brazed joint;
- wherein the pre-chamber body consists of a first material with a higher thermal conductivity than a second material of the pre-chamber tip portion, wherein the first material of the pre-chamber body consists of copper or a copper alloy and/or the second material of the pre-chamber tip portion consists of an alloyed steel having a higher wear resistance than the first material of the pre-chamber body.
3 more elements
A method for producing a pre-chamber, comprising:
- providing a first part and a second part, the first part consisting of a first material with a higher thermal conductivity than a second material of the second part;
- joining the first part with the second part by a welding process or a brazing process;
- machining of the first part to form a first outer contour of a pre-chamber body of the pre-chamber;
- machining of the first part to form a first inner contour of a pre-chamber volume and/or at least part of a riser passage of the pre-chamber;
- machining of the second part to form a second outer contour of a pre-chamber tip portion of the pre-chamber;
- and
- machining of the second part to form a second inner contour of at least two spray nozzles and/or at least part of the riser passage.
4 more elements
A system, comprising:
- a pre-chamber for an internal combustion engine, comprising:
- a pre-chamber body consisting essentially of a first material;
- a pre-chamber volume surrounded by the pre-chamber body;
- and
- a pre-chamber tip portion consisting essentially of a second material, wherein the pre-chamber tip portion comprises one or more fluid nozzles in fluid communication with the pre-chamber volume, and the pre-chamber tip portion is coupled to the pre-chamber body;
- wherein the first material of the pre-chamber body has a higher thermal conductivity than the second material of the pre-chamber tip portion, and the second material of the pre-chamber tip portion has a higher wear resistance than the first material of the pre-chamber body.
3 more elements
A system, comprising:
- a pre-chamber for an internal combustion engine, comprising:
- a pre-chamber body;
- a pre-chamber volume surrounded by the pre-chamber body;
- and
- a pre-chamber tip portion comprising at least two spray nozzles, wherein the at least two spray nozzles are in fluid communication with the pre-chamber volume, and the pre-chamber tip portion is affixed to the pre-chamber body by a welded joint or a brazed joint;
- wherein the pre-chamber body consists of a first material with a higher thermal conductivity than a second material of the pre-chamber tip portion;
- and
- wherein the pre-chamber volume and the at least two spray nozzles are in fluid connection via a riser passage, wherein at least a part of the riser passage is disposed in the pre-chamber tip portion.
5 more elements
A system, comprising:
- a pre-chamber for an internal combustion engine, comprising:
- a pre-chamber body consisting essentially of a first material;
- a pre-chamber volume surrounded by the pre-chamber body;
- and
- a pre-chamber tip portion consisting essentially of a second material, wherein the pre-chamber tip portion comprises one or more fluid nozzles in fluid communication with the pre-chamber volume, and the pre-chamber tip portion is coupled to the pre-chamber body;
- wherein the first material of the pre-chamber body has a higher thermal conductivity than the second material of the pre-chamber tip portion, and the second material of the pre-chamber tip portion consists essentially of steel.
3 more elements
Dependencies are inferred from the claim text.