Safran Aircraft Engines

Sébastien Alain Christophe Bourgois

Didier Hippolyte Hernandez

Romain Nicolas Lunel

Haris Musaefendic

Sébastien Loval

Clément Bernard

Frédéric Dos Santos

The fuel injection conduits in a multipoint device surrounding a so-called pilot central injection device include tubes of circumferential orientation. By separating the injection conduits from each other, it is possible to attribute to them different head losses which compensate the differences in length that the fuel has to travel: a uniform flow of fuel may be hoped for, for each of the injection holes. The tubes are individual but joined to form a crown that is unitary or composed of two almost symmetrical unitary portions, which lends itself well to manufacture by addition of material.

Multipoint fuel injection device

An injection system for a turbomachine combustion chamber includes a swirler and a mixing bowl. The mixing bowl includes a converging frustoconical portion and a diverging frustoconical portion. The diverging frustoconical portion is connected to the converging frustoconical portion, forming a continuous aerodynamic profile with the converging frustoconical portion. The diverging frustoconical portion is passed through by vortex holes which each includes a circumferential component around a longitudinal axis of the injection system and an axial component along the longitudinal axis of the injection system.

Injection system for turbomachine, comprising a swirler and mixing bowl vortex holes

An injection system for a turbine engine annular combustion chamber includes The system further includes a bowl configured to mix air and fuel arranged downstream of the support and The channels open at their upstream ends on said frustoconical surface.

Growing community of inventors

Moissy-Cramayel, France

Sébastien Alain Christophe Bourgois