Nozzle assembly having swirl-free air and hydrogen inflow

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

• at least one nozzle for injecting hydrogen into a combustion space of the combustion chamber, wherein the at least one nozzle includes a nozzle main body which extends along a nozzle longitudinal axis and a nozzle head at one end of the nozzle main body, the at least one nozzle further including:
• at least one first air-guiding duct to guide a first air flow in a direction of the combustion space and to conduct the first air flow via at least one first air outlet opening of the at least one first air-guiding duct into the combustion space,
• at least one fuel duct on the nozzle head to guide the hydrogen in the direction of the combustion space, and
• at least one second air-guiding duct to guide a second air flow in the direction of the combustion space and to conduct the second air flow via at least one second air outlet opening of the second air-guiding duct into the combustion space,
• wherein the at least one fuel duct includes a fuel outlet opening for the hydrogen to be injected into the combustion space, the at least one fuel duct being arranged between the first and second air-guiding ducts with their first and second air outlet openings, with respect to a radial direction running perpendicularly to the nozzle longitudinal axis,
• wherein the at least one second air-guiding duct is situated radially to an outside of the at least one fuel duct and is configured for supplying an unswirled air flow to the combustion space and wherein the at least one fuel duct is configured for supplying an unswirled flow of the hydrogen into the combustion space,
• a stabilization body positioned centrally at one end of the at least one nozzle, said stabilization body comprising a substantially flat end face facing the combustion space,
• wherein the substantially flat end face of the stabilization body facing the combustion space includes an extent in a radial direction, with respect to the nozzle longitudinal axis, that corresponds to at least twenty times, a duct height of the at least one first air-guiding duct at the at least one first air outlet opening and/or a duct height of the at least one second air-guiding duct at the second air outlet opening and/or a duct height of the at least one fuel duct at the fuel outlet opening.

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

• at least one nozzle for injecting hydrogen into a combustion space of the combustion chamber, wherein the at least one nozzle includes a nozzle main body which extends along a nozzle longitudinal axis and a nozzle head at one end of the nozzle main body, the at least one nozzle further including:
• at least one first air-guiding duct to guide a first air flow in a direction of the combustion space and to conduct the first air flow via at least one first air outlet opening of the at least one first air-guiding duct into the combustion space,
• at least one fuel duct on the nozzle head to guide the hydrogen in the direction of the combustion space, and
• at least one second air-guiding duct to guide a second air flow in the direction of the combustion space and to conduct the second air flow via at least one second air outlet opening of the second air-guiding duct into the combustion space,
• wherein the at least one fuel duct includes a fuel outlet opening for the hydrogen to be injected into the combustion space, the at least one fuel duct being arranged between the first and second air-guiding ducts with their first and second air outlet openings, with respect to a radial direction running perpendicularly to the nozzle longitudinal axis,
• wherein the at least one second air-guiding duct is situated radially to an outside of the at least one fuel duct and is configured for supplying an unswirled air flow to the combustion space and wherein the at least one fuel duct is configured for supplying an unswirled flow of the hydrogen into the combustion space,
• wherein the at least one first air-guiding duct is provided centrally on the nozzle main body running along the nozzle longitudinal axis and a fuel feed line for the at least one fuel duct is provided in the nozzle main body in a portion of the nozzle main body which is situated radially to an outside of the at least one first air-guiding duct,
• a centrally arranged flow divider positioned in the at least one first air-guiding duct, via which the first air flow in the at least one first air-guiding duct is divided between an inner and outer air-guiding duct part at an end of the at least one nozzle,
• wherein the flow divider includes a pipe portion with a cross-sectional area remaining constant along the nozzle longitudinal axis and a diffuser part which adjoins the pipe portion toward the nozzle end and has a cross-sectional area increasing along the nozzle longitudinal axis.