US 12,066,188 B2
Modular injector bolt for an engine
Lawrence A. Binek, Glastonbury, CT (US); Sean R. Jackson, Palm City, FL (US); Jose R. Paulino, Jupiter, FL (US); Anthony Van, Palm City, FL (US); and Timothy S. Snyder, Glastonbury, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Mar. 26, 2021, as Appl. No. 17/214,730.
Prior Publication US 2022/0307694 A1, Sep. 29, 2022
Int. Cl. F23R 3/28 (2006.01)
CPC F23R 3/283 (2013.01) [F23R 2900/00012 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An assembly for an engine, comprising:
an engine structure comprising a tubular sidewall, an injector aperture, a first fuel supply passage and a second fuel supply passage, the tubular sidewall forming a portion of the injector aperture within the engine structure, the injector aperture extending longitudinally through the engine structure along a centerline, the first fuel supply passage extending laterally within the engine structure to a first supply passage orifice in the tubular sidewall, the second fuel supply passage extending laterally within the engine structure to a second supply passage orifice in the tubular sidewall, the second supply passage orifice separated from the first supply passage orifice by an intermediate portion of the tubular sidewall, and the injector aperture between the first supply passage orifice and the second supply passage orifice;
a fuel injector mated with the injector aperture and arranged between the first fuel supply passage and the second fuel supply passage, the fuel injector comprising a nozzle passage and a nozzle orifice, the nozzle passage extending longitudinally along the centerline within the fuel injector to the nozzle orifice, and the nozzle passage fluidly coupled with the first fuel supply passage and the second fuel supply passage;
the fuel injector including a fuel nozzle, a fuel coupler and an injector mount, the fuel nozzle including the nozzle passage and the nozzle orifice, the fuel coupler within the injector aperture adjacent the first supply passage orifice and the second supply passage orifice, and the fuel coupler configured to fluidly couple the first fuel supply passage with the nozzle passage;
the fuel coupler including a first end wall, a second end wall and a plurality of struts, the plurality of struts arranged circumferentially about the centerline, the plurality of struts connected to and extending longitudinally along the centerline between the first end wall and the second end wall, and the fuel coupler disposed longitudinally between and connected to the fuel nozzle and the injector mount; and
the injector mount forming a solid longitudinal section of the fuel injector configured without any pathways through which fuel may travel;
a first seal element within the injector aperture, the first seal element laterally between and sealingly engaged with the fuel injector and the engine structure;
a second seal element within the injector aperture, the second seal element laterally between and sealingly engaged with the fuel injector and the engine structure; and
a first port in the fuel coupler located longitudinally along the centerline between the first seal element and the second seal element, the first port fluidly coupling the first fuel supply passage with the nozzle passage, and the first port formed circumferentially between an adjacent pair of the plurality of struts.