Patent ID: 7523875

Claim:
An injection nozzle for an internal combustion engine, the injection nozzle including: a nozzle body provided with a bore defining a valve seating surface, and having a first nozzle outlet and a second nozzle outlet; a first delivery chamber upstream of the first and second nozzle outlets; an outer valve member, moveable within the bore and itself provided with an axial bore, wherein the outer valve member is engageable with an outer valve seat defined by the valve seating surface so as to control fuel flow from the first delivery chamber to at least the first nozzle outlet when the outer valve member lifts from its seat; an inner valve member, moveable within the axial bore and including first and second seating lines spaced apart axially from each other, both of the first and second seating lines being engageable with an inner valve seat defined by the valve seating surface so as to control fuel flow from a second delivery chamber to the second nozzle outlet when the inner valve member lifts from the inner valve seat, wherein the inner valve member defines, at least in part, a flow path including an axial passage provided in the inner valve member such that fuel may flow from the first delivery chamber to the second delivery chamber; a sleeve member coupled to the inner valve member; and a ring member coupled to the outer valve member; wherein the ring member and the sleeve member have respective first and second end faces; wherein the ring member is brought into engagement with the sleeve member when the outer valve member is moved axially through a distance that is greater than a predetermined distance so as to impart axial movement to the inner valve member; and wherein the second end face of the ring member abuts a shoulder provided by the inner valve member.