Cylinder head assembly having fuel injector sleeve for mid-deck reacting of injector clamping load
AssigneeProgress Rail Locomotive Inc.
InventorRaji Rexavier
Life of this patent
Estimating the term…
Abstract
A cylinder head assembly includes a cylinder head casting, and an injector sleeve within an injector bore in the cylinder head casting. The injector sleeve includes a first sleeve end, and an injector clamping surface formed by an inner sleeve surface adjacent to a cylindrical second sleeve end. The injector sleeve further includes a sleeve clamping surface in contact with an upward facing middle deck surface of the cylinder head casting, and a reaction wall extending between the injector clamping surface and the sleeve clamping surface to transfer an injector clamping load to the upward facing middle deck surface.
Claims19
A fuel injector sleeve comprising:
- an elongate sleeve body including an outer sleeve surface, and an inner sleeve surface extending circumferentially around a longitudinal axis and forming an injector socket extending axially from a first sleeve end to a cylindrical second sleeve end forming an injector tip hole;
- the inner sleeve surface further including a conical injector clamping surface adjacent to the cylindrical second sleeve end;
- the elongate sleeve body further including a radially outward shoulder having a sleeve clamping surface formed thereon and facing a direction of the cylindrical second sleeve end, and a straight cylindrical wall extending from the radially outward shoulder in a direction of the cylindrical second sleeve end;
- the elongate sleeve body further including a reaction wall having the conical injector clamping surface formed thereon and extending transversely to the longitudinal axis from the straight cylindrical wall to the cylindrical second sleeve end;
- the reaction wall includes an increased wall thickness relative to wall thicknesses of the cylindrical second sleeve end and the straight cylindrical wall;
- and
- the outer sleeve surface includes, upon the reaction wall, a convex profile opposite to the injector clamping surface.
A fuel injector sleeve comprising:
- an elongate sleeve body including an outer sleeve surface, and an inner sleeve surface extending circumferentially around a longitudinal axis and forming an injector socket extending axially from a first sleeve end to a second sleeve end forming an injector tip hole;
- and
- the elongate sleeve body further including a radially outward shoulder having a sleeve clamping surface formed thereon and facing a direction of the second sleeve end, and a relief groove formed in the radially outward shoulder.
A fuel injector assembly comprising:
- a fuel injector sleeve including an inner sleeve surface extending between a first sleeve end and a second sleeve end, and a conical injector clamping surface adjacent to the second sleeve end;
- the fuel injector sleeve further including a radially outward shoulder having a sleeve clamping surface facing a direction of the second sleeve end, and a relief groove formed in the radially outward shoulder;
- and
- a fuel injector within the injector socket and in contact with the conical injector clamping surface.
Dependencies are inferred from the claim text.