Groove injector nozzle combustion shield
AssigneeCummins Inc.
InventorsThomas O. Hahn, Terry L. Johnson, Aamir Ibrahim, Raheel Ahmed, Joseph A. Worthington, Chandan Mahato
Life of this patent
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Abstract
An injector seal assembly including a nozzle combustion shield is disclosed, the thermally conductive component of the injector seal assembly defining at least one groove to allow fluid communication between the main combustion chamber and a gap defined by a fuel injector and the injector seal assembly to facilitate the prevention of corrosion of the components.
Claims22
An injector seal comprising:
- a seal component formed of a first material;
- and
- a thermally conductive component coupled to the seal component and comprising a first portion positioned adjacent to the seal component and defining a substantially planar end surface, the end surface including at least one groove defined by the end surface and extending into at least a portion of the first portion of the thermally conductive component, the thermally conductive component formed of a second material, the second material having a higher thermal conductivity than the first material.
An internal combustion engine including a fuel injector assembly for mounting in an engine cylinder head, comprising:
- a cylinder head defining a bore, the bore defining a sidewall surface;
- a fuel injector body including a longitudinal axis, a nozzle housing defining a tip portion, and a retainer;
- and
- an injector seal assembly positioned between the fuel injector body and the sidewall surface, the injector seal assembly comprising:
- a seal component formed of a first material, the seal component positioned in a space formed longitudinally between the fuel injector body and the sidewall surface, and
- a thermally conductive component positioned radially between the nozzle housing and the seal component and coupled to the seal component, the thermally conductive component being formed of a second material, the second material having a higher thermal conductivity than the first material and configured to transfer heat from the nozzle housing to the seal component, the thermally conductive component comprising:
- a first portion positioned adjacent to the seal component and defining a substantially planar end surface, the end surface including, at least one groove defined by the end surface and extending into at least a portion of the thermally conductive component, and
- a second portion positioned adjacent to the tip portion of the nozzle housing.
An internal combustion engine including a fuel injector assembly for mounting in an engine cylinder head, comprising:
- a cylinder head defining a bore, the bore defining a sidewall surface;
- a fuel injector body including a longitudinal axis, a nozzle housing defining a tip portion, and a retainer;
- and
- an injector seal assembly positioned between the fuel injector body and the sidewall surface, the injector seal assembly comprising:
- a seal component formed of a first material, the seal component positioned in a space formed longitudinally between the fuel injector body and the sidewall surface, and
- a thermally conductive component positioned radially between the nozzle housing and the seal component and coupled to the seal component, the thermally conductive component being formed of a second material, the second material having a higher thermal conductivity than the first material and configured to transfer heat flow the nozzle housing to the seal component, the thermally conductive component comprising:
- a first portion positioned adjacent to the seal component and defining a substantially planar end surface, the end surface including at least one groove defined by the end surface and extending into at least a portion of the first portion of the thermally conductive component, and
- a second portion positioned adjacent to the tip portion of the nozzle housing and wrapped around the tip portion of the nozzle housing.
Dependencies are inferred from the claim text.