Valve needle
AssigneeA.P. Møller—Mærsk A/S
InventorTim REEVE
Life of this patent
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Abstract
Disclosed is a valve needle for a needle valve of a slurry fuel injector valve, the valve needle comprising: a tip for abutting a needle valve seat of the needle valve; a sealing portion for location in a bore of the needle valve; and a fuel chamber portion between the tip and the sealing portion, wherein the fuel chamber portion is for location in a needle fuel chamber of the needle valve; wherein a surface of the sealing portion of the valve needle comprises at least one groove and wherein at least part of the or each groove extends in a direction that is non-perpendicular to an axial direction of the valve needle.
Claims18
A valve needle for a needle valve of a slurry fuel injector valve, the valve needle comprising:
- a tip for abutting a needle valve seat of the needle valve;
- a sealing portion for location in a bore of the needle valve;
- and
- a fuel chamber portion between the tip and the sealing portion, wherein the fuel chamber portion is for location in a needle fuel chamber of the needle valve;
- wherein a surface of the sealing portion of the valve needle comprises at least one groove, and wherein at least part of the or each groove extends in a direction that is non-perpendicular to an axial direction of the valve needle.
A needle valve for a slurry fuel injector valve, the needle valve comprising:
- a bore;
- a needle fuel chamber;
- and
- a valve needle that is moveable in the bore to protrude from within the bore into the needle fuel chamber to a variable extent;
- wherein the valve needle has a sealing portion that is within the bore and outside of the needle fuel chamber, wherein a surface of the sealing portion comprises at least one groove, and wherein at least part of the or each groove extends in a direction that is non-perpendicular to an axial direction of the valve needle.
Dependencies are inferred from the claim text.