| 摘要 |
A lubrication supply system for providing lubricant to the bearings and the gear box assemblies of a gas turbine engine includes a three stage poppet control valve means interposed between the source of pressurized lubricant and the bearings. The control valve is responsive to the engine speed which determines the level of pressurization of the pressurized lubricant. The control valve by-passes all lubricant to a sump below a selected speed, opens a first passage to the bearings, etc. during idling speed and, modulates the opening of a second passage to the bearings, etc., at speeds above idling.
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