Lubrication and scavenge system
AssigneeROLLS-ROYCE plc
InventorsEric Wilson, John Gebhard, Josh Gear, Mihir Desai
Life of this patent
Estimating the term…
Abstract
A lubrication system comprises a lubricant feed tank, a lubricant feed pump, one or more lubricant nozzles, a scavenge pump drive motor, and one or more scavenge pumps. The lubricant feed pump takes suction from the lubricant feed tank and pumps a lubricant feed as lubricant jets exiting the one or more lubricant nozzles. The lubricant feed pump has a rotating feed pump shaft coupled to a power source. The scavenge pump drive motor drives a rotating scavenge pump shaft that is coupled to the one or more scavenge pumps. The scavenge pumps return lubricant to the lubricant feed tank. The feed pump shaft and scavenge pump shaft rotate independently of each other.
Claims20
A lubrication system comprising:
- a lubricant supply tank;
- a lubricant feed pump having a rotatable feed pump shaft, said lubricant feed pump configured to draw a lubricant from said lubricant supply tank and discharge a lubricant feed;
- one or more lubricant jets configured to direct the lubricant from the lubricant feed to one or more components;
- one or more scavenge pump drive motors configured to drive a rotatable scavenge pump shaft;
- and
- one or more scavenge pumps, the scavenge pump shaft configured to drive the one or more scavenge pumps;
- wherein the scavenge pump shaft is configured to rotate independently of the feed pump shaft,
- wherein the lubricant feed pump is configured to drive a first scavenge pump drive motor and a second scavenge pump drive motor included in the one or more scavenge pump drive motors.
A lubrication system comprising:
- a lubricant supply tank;
- a lubricant feed pump having a rotatable feed pump shaft, said lubricant feed pump configured to draw a lubricant from said lubricant supply tank and discharge a lubricant feed;
- one or more hydraulically-driven scavenge pump drive motors configured to be driven by said lubricant feed and configured to drive a rotatable scavenge pump shaft;
- one or more lubricant jets configured to direct the lubricant feed to one or more bearing chambers;
- and one or more scavenge pumps, the scavenge pump shaft configured to drive the one or more scavenge pumps, wherein the one or more scavenge pumps are configured to take suction from said one or more bearing chambers;
- wherein the lubricant feed pump is configured to drive a first scavenge pump drive motor and a second scavenge pump drive motor included in the one or more scavenge pump drive motors.
A lubrication system comprising:
- a lubricant supply tank;
- a lubricant feed pump having a rotatable feed pump shaft, said lubricant feed pump configured to draw a lubricant from said lubricant supply tank and discharge a lubricant feed;
- a plurality of hydraulically-driven scavenge pump drive motors configured to be driven by said lubricant feed and configured to drive a rotatable scavenge pump shaft;
- one or more lubricant jets configured to direct the lubricant feed to one or more bearing chambers;
- and one or more scavenge pumps, the scavenge pump shaft configured to drive the one or more scavenge pumps, wherein the one or more scavenge pumps are configured to take suction from said one or more bearing chambers,
- wherein the lubricant feed discharged from a first of said plurality of hydraulically-driven scavenge pump drive motors is used to drive a second of said plurality of hydraulically-driven scavenge pump drive motors.
Dependencies are inferred from the claim text.