Nozzle assembly with a central fuel pipe that is sealed against an in-flow of air

A nozzle assembly for a combustion chamber of an engine, comprising:

• at least one nozzle for injecting a fuel into a combustion space of the combustion chamber, wherein the at least one nozzle comprises a nozzle main body which extends along a nozzle longitudinal axis and a nozzle holder which is connected to the nozzle main body and has at least one fuel feed line,
• wherein the nozzle main body comprises a central fuel pipe extending along the nozzle longitudinal axis and sealed against an inflow of air, in which fuel supplied via the at least one fuel feed line is guided within the nozzle main body up to a fuel outlet opening of the fuel pipe which is positioned at a nozzle end of the at least one nozzle and via which the fuel is introduced into the combustion chamber;
• wherein the at least one nozzle comprises a feed reservoir which is connected to the at least one fuel feed line and to which the fuel is supplied from the at least one fuel feed line and from which the fuel is supplied to the fuel pipe;
• wherein the feed reservoir is formed as a ring chamber and the ring chamber tapers in cross-section towards a portion of a wall which borders the ring chamber on the radial outside and lies opposite a feed opening via which the fuel is supplied from the at least one fuel feed line to the ring chamber.

A nozzle assembly for a combustion chamber of an engine, comprising:

• at least one nozzle for injecting a fuel into a combustion space of the combustion chamber, wherein the at least one nozzle comprises a nozzle main body which extends along a nozzle longitudinal axis and a nozzle holder which is connected to the nozzle main body and has at least one fuel feed line,
• wherein the nozzle main body comprises a central fuel pipe extending along the nozzle longitudinal axis and sealed against an inflow of air, in which fuel supplied via the at least one fuel feed line is guided within the nozzle main body up to a fuel outlet opening of the fuel pipe which is positioned at a nozzle end of the at least one nozzle and via which the fuel is introduced into the combustion chamber;
• wherein the at least one nozzle comprises a feed reservoir which is connected to the at least one fuel feed line and to which the fuel is supplied from the at least one fuel feed line and from which the fuel is supplied to the fuel pipe;
• at least one passage opening, via which fuel will flow from the feed reservoir into the fuel pipe;
• wherein the at least one passage opening extends through an inner wall of the fuel pipe running around the nozzle longitudinal axis;
• wherein the at least one passage opening includes a plurality of passage openings on the inner wall;
• and
• wherein the plurality of passage openings includes a first passage opening and a further passage opening and cross-sectional areas of the first passage opening and the further passage opening increase over the circumference, starting from the first passage opening to the further passage opening, such that equal proportions of a total mass flow of fuel flowing into the ring chamber flow into the first pipe portion via the first passage opening and the further passage opening.