Inward opening dual mode nozzle

The device has a nozzle body (2) protruding into the combustion chamber, two coaxial nozzle needles (5,7), the outer being guided in the nozzle body, a second nozzle needle seat in the body for the outer nozzle needle and a first seat (21) for the inner needle. The inner nozzle needle is guided in the outer nozzle needle and the first seat is arranged in the outer nozzle needle.