Abstract: A fuel injection valve for arrangement in a combustion chamber (40) of an internal combustion engine has a nozzle support with a nozzle body (30) disposed thereon in fixed fashion by way of a nozzle clamping nut (20), the nozzle body designed to protrude into the combustion chamber (40) and being provided for holding a nozzle needle, and at least one annular combustion chamber sealing element (50) with an upper support surface (60) facing the nozzle clamping nut (20) and a lower support surface (70) facing the combustion chamber (40), the lower surface surrounding the nozzle body (30) and being provided for sealing the nozzle support off from the combustion chamber (40). At least one additional sealing element (80) is provided for sealing the nozzle body (30) in the area of the nozzle clamping nut (20).

Abstract: A nozzle module for an injection valve has a nozzle body with a recess with a wall, being operable to hydraulically couple the recess to a high pressure fluid circuit, a seal seat embodied on the wall, at least one nozzle needle arranged in an axially moveable fashion in the recess. The needle has a seat area with a sealing surface interacting with the seal seat to open and close the valve, respectively, and a supporting area, arranged radially outside and axially at a distance from the seat area and supporting the needle against the wall when the needle closes. The needle has at least one needle recess, which when the supporting area rests against the wall of the body recess, an area of the body recess facing axially away from the seat area is hydraulically coupled to an area of the body recess which axially faces the seat area.

Abstract: A fuel injection valve for arrangement in a combustion chamber (40) of an internal combustion engine has a nozzle support with a nozzle body (30) disposed thereon in fixed fashion by way of a nozzle clamping nut (20), the nozzle body designed to protrude into the combustion chamber (40) and being provided for holding a nozzle needle, and at least one annular combustion chamber sealing element (50) with an upper support surface (60) facing the nozzle clamping nut (20) and a lower support surface (70) facing the combustion chamber (40), the lower surface surrounding the nozzle body (30) and being provided for sealing the nozzle support off from the combustion chamber (40). At least one additional sealing element (80) is provided for sealing the nozzle body (30) in the area of the nozzle clamping nut (20).

Abstract: An injection device for injecting fuel comprises a nozzle needle (2), which is arranged in a nozzle body (1), and a micro-bore (10) formed in the nozzle body (1), in which at least one injection hole (8) is configured. Here one tip (3) of the nozzle needle (2) projects into the micro-bore (10) in such a way that the tip (3) is arranged at the level of the injection holes (8) in the axial direction (X—X) of the nozzle needle, with recesses being formed in the tip at the tip (3) of the nozzle needle (2) level with the injection holes (8), in order to ensure a minimum distance between the tip (3) and the injection holes (8).