Injection nozzle

An injection nozzle for an internal combustion engine, the injection nozzle including:

• a nozzle body having a first nozzle outlet, a second nozzle outlet and a first delivery chamber for fuel;
• an outer valve needle engageable with an outer valve seating to control fuel injection through the first nozzle outlet, the outer valve needle defining first and second seating lines for engagement with first and second seats, respectively, defined by the outer valve seating;
• an inner valve needle engageable with an inner valve seating to control fuel injection through the second nozzle outlet, wherein the outer valve needle is provided with an axial bore within which the inner valve needle is slidable;
• the injection nozzle further including a sleeve member coupled to the inner valve needle and a ring member coupled to the outer valve needle, wherein the ring member and the sleeve member have respective first and second end faces, the first end face of the ring member being opposed to and spaced apart from the second end face of the sleeve member by a predetermined distance when the outer valve needle and the inner valve needle are seated, and wherein the ring member is brought into engagement with the sleeve member when the outer valve needle is moved axially through a distance that is greater than the predetermined distance so as to impart axial movement to the inner valve needle.