SYSTEME D'INJECTION POUR CHAMBRE DE COMBUSTION DE TURBOMACHINE COMPORTANT UNE PAROI ANNULAIRE A PROFIL INTERNE CONVERGENT

摘要

An air and fuel injection system for a turbine engine combustion chamber dome, including at least two fuel injection devices including a central injector and a peripheral annular injector arranged around the central injector, and an inner annular air inlet channel into which the central injector opens up to enable mixing between the fuel from the central injector and the air inlet into the inner annular channel, and at least one outer annular air inlet channel to enable enrichment of this mix with air and to stabilise the pilot combustion zone, wherein the inner annular channel and at least one outer annular channel are separated by an intermediate annular wall extending around the central injector and having a convergent inner profile.