公开(公告)号：US20200333002A1

公开(公告)日：2020-10-22

申请号：US16390315

申请日：2019-04-22

Applicant: United Technologies Corporation

Inventor： Sami Chukrallah ,  Andre M. Ajami ,  Robert B. Davis

IPC: F23N1/00 ,  F23N5/20 ,  F23R3/28 ,  F02C3/32

Abstract: A gas turbine engine includes a compressor section, a combustor fluidly connected to the compressor section via a primary flowpath, a turbine section fluidly connected to the combustor via the primary flowpath, and a plurality of fuel injectors disposed within the combusto. The plurality of fuel injectors including at least one start fuel injector. Also included is a controller having a memory and processor. The memory stores instructions configured to cause the at least one start fuel injector to pulse fuel through the start injector nozzle, thereby preventing stagnant fuel in the start injector nozzle from exceed a coking temperature threshold.

公开(公告)号：US11199325B2

公开(公告)日：2021-12-14

申请号：US16390315

申请日：2019-04-22

Applicant: United Technologies Corporation

Inventor： Sami Chukrallah ,  Andre M. Ajami ,  Robert B. Davis

IPC: F23N1/00 ,  F02C3/32 ,  F23N5/20 ,  F23R3/28 ,  F02C7/264 ,  B05B1/08

Abstract: A gas turbine engine includes a compressor section, a combustor fluidly connected to the compressor section via a primary flowpath, a turbine section fluidly connected to the combustor via the primary flowpath, and a plurality of fuel injectors disposed within the combustor. The plurality of fuel injectors including at least one start fuel injector. Also included is a controller having a memory and processor. The memory stores instructions configured to cause the at least one start fuel injector to pulse fuel through the start injector nozzle, thereby preventing stagnant fuel in the start injector nozzle from exceed a coking temperature threshold.