US 12,281,796 B1
Combustion system with dual fuel capability
Owen Wong, Markham (CA); and Jayaprakash Kannan, North York (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Mar. 18, 2024, as Appl. No. 18/608,525.
Int. Cl. F23R 3/36 (2006.01); F02C 7/22 (2006.01); F02C 7/232 (2006.01); F23R 3/28 (2006.01)
CPC F23R 3/36 (2013.01) [F02C 7/22 (2013.01); F02C 7/232 (2013.01); F23R 3/286 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A fuel injector comprising:
a head body comprising a first fuel inlet passage and a second fuel inlet passage;
a nozzle comprising a first fuel outlet passage, a second fuel outlet passage, and an air outlet passage;
a fuel body mated to the head body and extending from the head body to the nozzle body, wherein the fuel body bounds a fuel cavity that fluidly connects the second inlet passage to the second outlet passage; and
a first fuel tube mated to the head body and extending through the fuel cavity to the nozzle body, wherein the first fuel tube fluidly connects the first inlet passage to the first outlet passage;
an outer body mated to the head body and concentric with the fuel body at the head body, the outer body including an air inlet passage extending through the outer body;
an air cavity bound by the outer body, the fuel body, and the nozzle that fluidly connects the air inlet passage to the air outlet passage;
a first fuel path that includes, in series, the first fuel inlet passage, the first fuel tube, and the first fuel outlet passage;
a second fuel path that is independent from the first fuel path and includes, in series, the second fuel inlet passage, the fuel cavity, and the second fuel outlet passage; and
an air path includes, in series, the air inlet passage, the air cavity, and the air outlet passage.