公开(公告)号：US20250102058A1

公开(公告)日：2025-03-27

申请号：US18972185

申请日：2024-12-06

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Xiaohua Zhang ,  Miriam Manzoni ,  Flavia Turi ,  Andrea Piazza ,  Arthur W. Sibbach ,  Brandon W. Miller

IPC: F16H57/04 ,  F01D15/12 ,  F01D25/20

Abstract: A gearbox assembly includes a gearbox having a gear assembly and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, inclusive of the endpoints. The lubricant extraction volume ratio is defined by V G V GB . VG is a gutter volume of the gutter and VGB is a gearbox volume. A gas turbine engine includes the gearbox assembly and a lubrication system. The lubrication system includes a sump that is a primary reservoir having a first lubricant level and a secondary reservoir in the gearbox assembly. The secondary reservoir has a second lubricant level. The lubrication system fills the secondary reservoir with a lubricant between the first lubricant level and the second lubricant level. The gear assembly collects the lubricant in the secondary reservoir to supply the lubricant to the gear assembly.

公开(公告)号：US11994204B2

公开(公告)日：2024-05-28

申请号：US17355282

申请日：2021-06-23

Applicant: GE Avio S.r.l.

Inventor： Pietro Molesini ,  Saypen Baraggia Au Yeung ,  Miriam Manzoni

IPC: F16H57/04

CPC classification number: F16H57/0423 ,  F16H57/045 ,  F16H57/046 ,  F16H57/0495 ,  F05D2220/323

Abstract: A gear assembly for an aeronautical engine includes a first gear disposed at a centerline axis of the gear assembly, a second gear coupled to the first gear in adjacent radial arrangement to form a first mesh between the first gear and the second gear, a static portion coupled to the second gear in adjacent circumferential arrangement, the static portion defining a pocket, and a spraybar disposed within the static portion such that a supply opening of the spraybar is directed at the first mesh between the first gear and the second gear. The supply opening provides a flow of lubricant to the first mesh between the first gear and the second gear and at least a portion of the flow of lubricant is collected by the pocket. The flow of lubricant is continuously released from the pocket to the gear system.

公开(公告)号：US20230417185A1

公开(公告)日：2023-12-28

申请号：US18068017

申请日：2022-12-19

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Xiaohua Zhang ,  Miriam Manzoni ,  Flavia Turi ,  Andrea Piazza ,  Arthur W. Sibbach

IPC: F02C7/06 ,  F02C7/36 ,  F16H57/04

CPC classification number: F02C7/06 ,  F02C7/36 ,  F16H57/0408 ,  F16H57/0479 ,  F05D2260/40311 ,  F05D2260/98 ,  F05D2260/602

Abstract: A gearbox assembly includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, inclusive of the endpoints. A gas turbine engine includes the gearbox assembly.

公开(公告)号：US20250101916A1

公开(公告)日：2025-03-27

申请号：US18972172

申请日：2024-12-06

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Xiaohua Zhang ,  Miriam Manzoni ,  Flavia Turi ,  Andrea Piazza ,  Arthur W. Sibbach ,  Brandon W. Miller

IPC: F02C7/06 ,  F16H57/04 ,  F16N7/38

Abstract: A gas turbine engine includes a gearbox assembly that includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, inclusive of the endpoints. The lubricant extraction volume ratio defined by: V G V G ⁢ B · V G is a gutter volume of the gutter and VGB is a gearbox volume. The gas turbine engine includes a lubricant flow control system that includes a variable flow lubricant pump that generates a pump variable flow of lubricant to the gearbox assembly. The gearbox assembly has a variable consumption demand for delivery of lubricant. A lubricant flow controller is configured to generate a pump control command for the variable flow lubricant pump to produce the pump variable flow of lubricant based on the variable consumption demand.

公开(公告)号：US20250101911A1

公开(公告)日：2025-03-27

申请号：US18972209

申请日：2024-12-06

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Xiaohua Zhang ,  Miriam Manzoni ,  Flavia Turi ,  Andrea Piazza ,  Arthur W. Sibbach

IPC: F02C3/30 ,  F02C7/06 ,  F16H57/04

Abstract: A gas turbine engine includes a fan, a combustor positioned in a core air flowpath that generates combustion gases, a steam system that extracts water from the combustion gases and generates steam, and a gearbox assembly. The steam system includes water storage devices that store the water therein. The water storage devices include a first state in which a level of the water increases or is maintained and a second state in which the level of the water decreases as the water flows through the water storage devices. The gearbox assembly includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, inclusive of the endpoints. The lubricant extraction volume ratio defined by: V G V G ⁢ B · V G is a gutter volume of the gutter and VGB is a gearbox volume.

公开(公告)号：US20250003482A1

公开(公告)日：2025-01-02

申请号：US18510014

申请日：2023-11-15

Applicant: GE Avio S.r.l.

Inventor： Miriam Manzoni ,  Michele Gravina ,  Federico Leonardi ,  Alessandro Anderlini

IPC: F16H57/04

Abstract: A lubrication system for a gear assembly. The gear assembly includes a first gear and a second gear. The first gear and the second gear mesh with each other at a mesh. The lubrication system includes one or more lubricant injectors. The one or more lubricant injectors include one or more first lubricant outlets directed to the mesh. The one or more first lubricant outlets supply a first portion of lubricant to the mesh. The one or more lubricant injectors include one or more second lubricant outlets directed to a location that is different than the mesh. The one or more second lubricant outlets supply a second portion of lubricant to the location different than the mesh.

公开(公告)号：US12168239B2

公开(公告)日：2024-12-17

申请号：US17643544

申请日：2021-12-09

Applicant: GE Avio S.r.l.

Inventor： Saypen Baraggia Au Yeung ,  Pietro Molesini ,  Miriam Manzoni ,  Fabio De Bellis

IPC: B01D45/16 ,  B04C5/04 ,  B04C5/28 ,  F02C7/06

Abstract: An air/oil separator is provided. The air/oil separator includes an oil manifold having a first air/oil inlet and a second air/oil inlet; a first separation chamber in communication with the first air/oil inlet; and a second separation chamber separate from the first separation chamber, the second separation chamber in communication with the second air/oil inlet.

公开(公告)号：US20240280170A1

公开(公告)日：2024-08-22

申请号：US18477960

申请日：2023-09-29

Applicant: GE Avio S.r.l.

Inventor： Michele Gravina ,  Miriam Manzoni ,  Federico Leonardi ,  Andrea Piazza

IPC: F16H57/04

CPC classification number: F16H57/0471 ,  F16H57/0424 ,  F16H57/0428 ,  F16H57/0443 ,  F02C7/36

Abstract: A gearbox assembly includes a plurality of planet gears secured by a planet carrier. The plurality of planet gears and the planet carrier rotate about a longitudinal centerline axis. A planet pin is disposed in each planet gear. One or more journal bearings are defined by the planet pin and the planet gear, each planet gear rotating about the one or more journal bearings. The gearbox assembly includes an auxiliary lubrication system that stores lubricant therein. The auxiliary lubrication system includes one or more lubricant lines that provide fluid communication between the auxiliary lubrication system and the one or more journal bearings. Rotation of the planet carrier and the one or more journal bearings generates a suction effect that causes the lubricant in the auxiliary lubrication system to flow to the one or more journal bearings during windmilling conditions and during zero gravity conditions or negative gravity conditions.

公开(公告)号：US11519346B2

公开(公告)日：2022-12-06

申请号：US16920159

申请日：2020-07-02

Applicant: GE Aviation Czech s.r.o. ,  GE Avio S.r.l.

Inventor： Giuseppe Cervelli ,  Simone Castellani ,  Miriam Manzoni ,  Giuseppe Bellocchio ,  Vojtech Jirasek

IPC: F02D29/02 ,  B64C11/38 ,  B64C11/40 ,  B63H3/10 ,  F02B61/04

Abstract: A variable pitch propeller assembly operatively coupled with an engine and methods for controlling the pitch of a plurality of propeller blades thereof is provided. In one example aspect, the variable pitch propeller assembly includes features for combining overspeed, feathering, and reverse functionality in a single secondary control valve. The secondary control valve is operable to selectively allow a controlled amount of hydraulic fluid to flow to or from a pitch actuation assembly such that the pitch of the propeller blades can be adjusted to operate the variable pitch propeller assembly in one of a constant speed mode, a feather mode, and a reverse mode.

公开(公告)号：US20220184641A1

公开(公告)日：2022-06-16

申请号：US17643544

申请日：2021-12-09

Applicant: GE Avio S.r.l.

Inventor： Saypen Baraggia Au Yeung ,  Pietro Molesini ,  Miriam Manzoni ,  Fabio De Bellis

IPC: B04C5/28 ,  B01D45/16 ,  B04C5/04 ,  F02C7/06

Abstract: An air/oil separator is provided. The air/oil separator includes an oil manifold having a first air/oil inlet and a second air/oil inlet; a first separation chamber in communication with the first air/oil inlet; and a second separation chamber separate from the first separation chamber, the second separation chamber in communication with the second air/oil inlet.