Patent ID: 7721546

Claim:
A fuel injection system for gas turbine engine including a compressor, a combustor and a turbine, comprising: an annular internal fuel manifold disposed adjacent the combustor within a surrounding gas generator casing, the fuel manifold having at least one fuel conveying passage therein in fluid flow communication with a plurality of fuel injection nozzles disposed along the fuel manifold and adapted to spray fuel into the combustor; and a mounting system supporting and positioning the fuel manifold relative to the combustor within said gas generator casing, the mounting system including three supports equally spaced apart by approximately 120 degrees about the annular fuel manifold, the three supports including only two pin supports and a single radially extending fuel inlet providing fuel flow to the fuel conveying passage, the two pin supports and the fuel inlet disposed between the fuel manifold and the gas generator casing, each of the two pin supports including a radially extending pin co-operating with an aligned lug slidingly disposed around the pin for relative sliding displacement therebetween, said pin having an outer end removably engaged to the gas generator casing such that the pin is replaceable, the outer end of the pin being threaded and received within a corresponding threaded boss defined in an inner surface of the gas generator casing, the pin supports providing axial constraint while permitting the fuel manifold to radially displace relative to the surrounding gas generator casing due to thermal size change, and the fuel inlet providing both fuel flow to the fuel conveying passage and load bearing support for the fuel manifold ring.