公开(公告)号：US20220381187A1

公开(公告)日：2022-12-01

申请号：US17879277

申请日：2022-08-02

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Peter Cocks ,  Michael K. Ikeda

IPC: F02C7/236 ,  F02C3/13 ,  F02C7/36 ,  F02C9/26 ,  F04D13/06

Abstract: A fuel system for a gas turbine engine includes a main fuel pump generating a main fuel flow into a main fuel passage and a secondary pump generating a secondary fuel flow into a secondary flow passage. A first control valve is disposed in a passage between the main fuel passage and the secondary flow passage. The first control valve selectively directs an excess portion of the main fuel flow to the secondary flow passage to provide at least a portion of the secondary fuel flow.

公开(公告)号：US11781484B2

公开(公告)日：2023-10-10

申请号：US17879277

申请日：2022-08-02

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Peter Cocks ,  Michael K. Ikeda

IPC: F02C7/236 ,  F02C3/13 ,  F02C7/36 ,  F02C9/26 ,  F04D13/06

CPC classification number: F02C7/236 ,  F02C3/13 ,  F02C7/36 ,  F02C9/26 ,  F04D13/06 ,  F05D2220/32 ,  F05D2240/35 ,  F23K2203/20

Abstract: A fuel system for a gas turbine engine includes a main fuel pump generating a main fuel flow into a main fuel passage and a secondary pump generating a secondary fuel flow into a secondary flow passage. A first control valve is disposed in a passage between the main fuel passage and the secondary flow passage. The first control valve selectively directs an excess portion of the main fuel flow to the secondary flow passage to provide at least a portion of the secondary fuel flow.

公开(公告)号：US20210363925A1

公开(公告)日：2021-11-25

申请号：US17392653

申请日：2021-08-03

Applicant: Raytheon Technologies Corporation

Inventor： Joseph Turney ,  Michael K. Ikeda

IPC: F02C7/232 ,  F02C7/143 ,  F16K17/20

Abstract: A gas turbine engine includes a main compressor section and a main turbine section. A cooling air supply system cools a location in at least one of the main compressor section and the main turbine section. The cooling air supply system includes a tap for tapping cooling air compressed by the main compressor section, connected for passing the cooling air through a heat exchanger and to a boost compressor, and then to the cooling location in the at least one of the main compressor section and the main turbine section. A fuel supply system has a fuel tank for delivering fuel to a fuel pump. At least one valve for selectively returning fuel downstream of the main pump back to an upstream location. At least one return turbine drives at least one fluid moving device in the air cooling system.