| 摘要 |
A fuel injection system for a turbine engine has a an injector 22 configured to inject a primary fuel flow output (26 Fig. 2) from a primary fuel circuit at all engine speeds, and a secondary fuel flow output (28 Fig. 2) from a secondary fuel circuit above a predetermined engine speed. The injector system has an injection head 23 opening up into an internal space in the injection system, i.e. a combustion chamber (8 Fig. 2), and an associated swirler 30 with an air flow channel 34. The system includes a first annular deflector 52 surrounded by an end wall bowl 42 and which extends in a downstream direction from a downstream transverse surface 40 that delimits the downstream side of the swirler, the bowl including first air orifices 46 and may include second air orifices 50. The deflector has a downstream end 54 offset in the upstream direction from the bowl downstream end 44 and which guides an air film output (58 Fig. 5) from the first orifices (46). The internal radius ψ of the cross section of the first annular deflector increases from the downstream transverse surface as far as the downstream end of the first annular deflector. |
