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：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.