Lubrication cut-off at high speed

摘要

A mechanical system has a component to be lubricated that requires greater lubrication at lower speed conditions than would be required at higher speed conditions. A lubricant tower is biased to a position allowing a greater flow of lubrication to the component at lower speed conditions, then moved to a position at higher speed conditions where there is a lesser flow of lubrication.

主权项

1. A gas turbine engine comprising:
a core engine including a compressor, a combustor, and a turbine, said turbine driving a shaft, said shaft driving an accessory gear box, and said accessory gear box connecting a starter for the gas turbine engine to said shaft, said starter including gears; and a lubricant tower having a valve, said lubricant tower in fluid communication with a source of a lubricant and said gears, said valve having a first position establishing fluid communication for a flow of said lubricant from said source to said gears through said lubricant tower, said valve having a second position obstructing said flow relative to said first position, wherein said valve is biased by a biasing force so as to be configured in said first position at low shaft speeds, and wherein said valve is moved in opposition to said biasing force to said second position as at high shaft speeds, said high shaft speeds being higher than said low shaft speeds.