公开(公告)号：CA2193653C

公开(公告)日：2006-03-21

申请号：CA2193653

申请日：1995-05-30

Applicant: UNITED TECHNOLOGIES CORP SIKOR

Inventor： KISH JULES G ,  SAMMATARO STEPHEN R ,  ISABELLE CHARLES J

IPC: F16H57/04 ,  B64C27/12 ,  F16N7/18 ,  F16N7/40

Abstract: A self-scavenging, hybrid lubrication subsystem for a main transmission gearbox includes a sump that is fabricated as an integral structural extension of the gearbox so that the dynamic fluid level of the lubricating medium in the sump is a predetermined distance above the bottom (18) of the gearbox. The radial discontinuity between the cylindrical (22) and throat segments (26) in combination define a nozzle inlet (28) that is operative to direct outflow of the lubricating medium collected in the bottom of the gearbox to another sump with higher fluid level by means of a nozzle (60). The interaction between the peripheral surface of the rotating annular planetary carrier plate and the structurally-modified side wall of the gearbox exerts a viscous pumping action on the lubricating medium in the flow channels causing the lubricating medium to flow therethrough and being transported through the nozzle (60) to a higher level.