公开(公告)号：US20240077032A1

公开(公告)日：2024-03-07

申请号：US18504453

申请日：2023-11-08

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Cédric SAINTIGNAN ,  Joseph Daniel Maxim CIRTWILL ,  Kian MCCALDON ,  David WADDLETON ,  Marc-André TREMBLAY ,  Ignazio BROCCOLINI ,  Stephen TARLING

IPC: F02C7/30 ,  F02C6/00 ,  F02C6/16 ,  F02C7/22 ,  F02C7/232 ,  F02C7/236 ,  F02C9/42

CPC classification number: F02C7/30 ,  F02C6/00 ,  F02C6/16 ,  F02C7/222 ,  F02C7/232 ,  F02C7/236 ,  F02C9/42 ,  F23D2209/30 ,  F23K2300/203

Abstract: Methods and systems of operating a gas turbine engine in a low-power condition are provided. In one embodiment, the method includes supplying fuel to the combustor by supplying fuel to the first fuel manifold via a first flow divider valve and supplying fuel to the second fuel manifold via a second flow divider valve. While supplying fuel to the combustor by supplying fuel to the first fuel manifold, the method includes stopping supplying fuel to the second fuel manifold and supplying pressurized gas to the second fuel manifold via the second flow divider valve to flush fuel in the second fuel manifold into the combustor and hinder coking in the second fuel manifold and associated nozzles.

公开(公告)号：US20210062714A1

公开(公告)日：2021-03-04

申请号：US16751393

申请日：2020-01-24

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Stephen TARLING ,  Philippe BEAUCHESNE-MARTEL ,  Jeffrey VERHIEL

IPC: F02C3/04 ,  F02C7/232 ,  F02C7/22

Abstract: A system and method for operating a gas turbine engine are provided. The system and method remove fuel from a fuel manifold during a low-power mode of operation of the gas turbine engine. The method includes supplying fuel to a combustor of the gas turbine engine via a first manifold and a second manifold during a first mode of operation; stopping fuel supply to the combustor via the second manifold and continuing to supply fuel to the combustor via the first manifold during a second mode of operation; and, after stopping fuel supply to the combustor via the second manifold, purging fuel from the second manifold using a pressure inside the combustor to drive the fuel in the second manifold away from the combustor.

公开(公告)号：US20240337222A1

公开(公告)日：2024-10-10

申请号：US18750320

申请日：2024-06-21

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Stephen TARLING ,  Philippe BEAUCHESNE-MARTEL ,  Jeffrey VERHIEL

IPC: F02C9/36

CPC classification number: F02C9/36

Abstract: A system and method for operating a gas turbine engine are provided. The system and method remove fuel from a fuel manifold during a low-power mode of operation of the gas turbine engine. The method includes supplying fuel to a combustor of the gas turbine engine via a first manifold and a second manifold during a first mode of operation; stopping fuel supply to the combustor via the second manifold and continuing to supply fuel to the combustor via the first manifold during a second mode of operation; and, after stopping fuel supply to the combustor via the second manifold, purging fuel from the second manifold using a pressure inside the combustor to drive the fuel in the second manifold away from the combustor.

公开(公告)号：US20220298972A1

公开(公告)日：2022-09-22

申请号：US17836510

申请日：2022-06-09

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Cédric SAINTIGNAN ,  Joseph Daniel Maxim CIRTWILL ,  Kian MCCALDON ,  David WADDLETON ,  Marc-André TREMBLAY ,  Ignazio BROCCOLINI ,  Stephen TARLING

IPC: F02C7/30 ,  F02C6/00 ,  F02C6/16 ,  F02C7/22 ,  F02C7/236 ,  F02C9/42 ,  F02C7/232

Abstract: Methods and systems of operating a gas turbine engine in a low-power condition are provided. In one embodiment, the method includes supplying fuel to the combustor by supplying fuel to the first fuel manifold via a first flow divider valve and supplying fuel to the second fuel manifold via a second flow divider valve. While supplying fuel to the combustor by supplying fuel to the first fuel manifold, the method includes stopping supplying fuel to the second fuel manifold and supplying pressurized gas to the second fuel manifold via the second flow divider valve to flush fuel in the second fuel manifold into the combustor and hinder coking in the second fuel manifold and associated nozzles.