公开(公告)号：US20190145282A1

公开(公告)日：2019-05-16

申请号：US16242164

申请日：2019-01-08

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Nathan D. Korn ,  Marc Muldoon

IPC: F01D25/20 ,  F01D25/18 ,  F01D25/34 ,  F02C7/06 ,  F02C7/14 ,  F01D5/00 ,  F02C7/224 ,  F01D25/16 ,  F01D15/12 ,  F02C7/18

Abstract: A method of maintaining a gas-turbine engine is provided. The method includes the steps of removing a conduit from the gas-turbine engine, installing a temporary oil filter in place of the conduit in the gas-turbine engine, and starting the gas-turbine engine with the temporary oil filter installed. A fan-drive gear system is also provided and comprises a journal bearing, a main oil pump fluidly coupled to the journal bearing, a main oil filter fluidly coupled between the journal bearing and the main oil pump, and an auxiliary oil pump fluidly coupled to the journal bearing. The auxiliary oil pump may be configured to supply oil to the journal bearing on startup. An auxiliary oil filter may also be installed between the auxiliary oil pump and the journal bearing.

公开(公告)号：US20160010549A1

公开(公告)日：2016-01-14

申请号：US14763535

申请日：2014-01-24

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Michael E. McCune ,  Marc Muldoon

IPC: F02C7/06 ,  F01D5/02 ,  F02C7/36 ,  F16H57/04 ,  F02C3/04

CPC classification number: F02C7/06 ,  F01D5/02 ,  F02C3/04 ,  F02C7/36 ,  F05D2220/36 ,  F05D2240/24 ,  F05D2240/35 ,  F05D2260/40311 ,  F05D2260/98 ,  F16H57/0423 ,  F16H57/0427 ,  F16H57/0482 ,  F16H57/0486 ,  F16H57/082

Abstract: A gearbox assembly for a gas turbofan engine includes a sun gear rotatable about an axis and a plurality of intermediate gears driven by the sun gear. A baffle disposed between at least two of the plurality of intermediate gears includes a first gap distance within a first gap portion and a second gap distance within a second gap portion. The first gap portion is disposed between the baffle and one of the intermediate gears away from the meshed interface with the sun gear and the second gap portion is disposed near the interface with the sun gear. The first gap distance within the first gap portion is different than the second gap distance within the second gap portion to define a desired lubricant flow path.

Abstract translation: 用于气体涡轮风扇发动机的齿轮箱组件包括可围绕轴线旋转的太阳齿轮和由太阳齿轮驱动的多个中间齿轮。 布置在所述多个中间齿轮中的至少两个之间的挡板包括在第一间隙部分内的第一间隙距离和在第二间隙部分内的第二间隙距离。 第一间隙部分设置在挡板和远离与太阳齿轮的啮合界面的一个中间齿轮之间，并且第二间隙部分设置在与太阳齿轮的界面附近。 第一间隙部分内的第一间隙距离不同于第二间隙部分内的第二间隙距离，以限定所需的润滑剂流动路径。