Patent ID: 7871021

Claim:
The injection nozzle being such that the outer valve member disengages with the external seating at the same time as it disengages with the internal seating, while the insert remains seated on the seating surface, a nozzle body defining a seating surface and having a first nozzle outlet; an outer valve member received within the nozzle body and being engageable with an external seating defined by the seating surface so as to control fuel injection through the first nozzle outlet, the outer valve member defining a blind axial bore having an internal bore surface, the outer valve member defining a passage allowing continuous fluid communication between the bore and the exterior of the outer valve member; and an insert received within the bore, the insert defining an annular gap with the internal bore surface, wherein the outer valve member is engageable with an internal seating defined by a surface of the insert to control fuel flow through the annular gap to the first nozzle outlet, the injection nozzle being such that the outer valve member is arranged to disengage with the external seating at the same time as it disengages with the internal seating such that the fuel which is to be ejected from the nozzle is always caused to flow simultaneously along: (a) a first path between the outer valve member and the external seating; and (b) a second path through the annular gap.