Multipoint fuel injection device for annular combustion chamber of e.g. turbojet, of airplane, has venturi including internal cavity supplied with air and communicating with air passage orifices leading to radial inner wall of venturi

摘要

The device (110) has a pilot circuit supplying an injector opening into a venturi (120), and a multipoint circuit supplying an annular row of injection orifices located radially outwardly of the venturi. The venturi includes an internal cavity (160) supplied with air and communicating with air passage orifices (163) leading to the radial inner wall of the venturi. The venturi is connected at its downstream end with a partition wall (168) that separates combustion zones produced by the pilot and multipoint ciruits, respectively.