Injection nozzle

An injection nozzle (30) for an internal combustion engine, the injection nozzle (30) comprising a nozzle body (32) provided with a bore (36) within which a valve needle (34) is moveable, the valve needle (34) being engageable with a substantially conical valve seating (38) to control fuel delivery through a set of nozzle outlets (40), said nozzle outlets including respective entry openings (40a) defined in a wall of a sac volume of the nozzle body, wherein the valve needle includes a first valve region (52), a second valve region (54) and a seat region (60) defined by a transition between the first and second valve regions (52, 54) which seats against the valve seating (38) when the nozzle is in a non-injecting state. The valve needle (34) comprises a third valve region (62), adjacent the second valve region, the third valve region having an outer surface (65) defining a curved profile, the end of the outer surface (65) terminating substantially in alignment with the entry openings (40a).