US 12,276,333 B2
Gearbox assembly lubrication system for a turbine engine
Brandon W. Miller, Middletown, OH (US); Arthur W. Sibbach, Boxford, MA (US); Andrew Hudecki, Milford, OH (US); and Ryan T. Roehm, West Chester, OH (US)
Assigned to GENERAL ELECTRIC COMPANY, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Oct. 5, 2023, as Appl. No. 18/481,582.
Claims priority of provisional application 63/509,445, filed on Jun. 21, 2023.
Prior Publication US 2024/0426374 A1, Dec. 26, 2024
Int. Cl. F01D 25/18 (2006.01); F02C 7/36 (2006.01); F16H 57/04 (2010.01)
CPC F16H 57/045 (2013.01) [F02C 7/36 (2013.01); F16H 57/0421 (2013.01); F16H 57/0435 (2013.01); F16H 57/0436 (2013.01); F16H 57/0442 (2013.01); F16H 57/0471 (2013.01); F05D 2260/4031 (2013.01); F05D 2260/98 (2013.01); F16H 57/0443 (2013.01); F16H 57/0486 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lubrication system for a gearbox assembly for a turbine engine, the gearbox assembly having a gear assembly including one or more gears and one or more bearings, the lubrication system comprising:
a sump in fluid communication with the gearbox assembly, the sump being a primary reservoir having a first lubricant level;
a secondary reservoir in the gearbox assembly, the secondary reservoir having a second lubricant level that is greater than the first lubricant level;
a first drain port in fluid communication with the sump; and
a second drain port in fluid communication with the secondary reservoir,
wherein the lubrication system fills the secondary reservoir with a lubricant between the first lubricant level and the second lubricant level and a portion of the lubricant drains through the second drain port, and the one or more gears collects the lubricant in the secondary reservoir to supply the lubricant from the secondary reservoir to the one or more gears or to the one or more bearings.