Auxiliary lubrication system with flow management valve
AssigneeRaytheon Technologies Corporation
InventorsFrancis Parnin, Anthony Spagnoletti
Life of this patent
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Abstract
A lubrication system is disclosed. In various embodiments, the lubrication system includes a storage tank configured to store a lubricant; a flow management valve configured to direct the lubricant to a starvation tolerant component and to a valve exit conduit; and a main pump configured to receive the lubricant from the storage tank and to pump the lubricant to the flow management valve and to a starvation intolerant component.
Claims16
A lubrication system, comprising:
- a storage tank configured to store a lubricant;
- a flow management valve configured to direct the lubricant to a starvation tolerant component and to a valve exit conduit;
- and
- a main pump configured to receive the lubricant from the storage tank and to pump the lubricant to the flow management valve and to a starvation intolerant component,
- wherein the flow management valve includes a two-way valve configured to direct the lubricant to the starvation tolerant component during a normal operation state and to the valve exit conduit during a non-normal operation state and
- wherein the valve exit conduit is configured to direct the lubricant to the main pump during the non-normal operation state.
A gas turbine engine, comprising:
- one or more starvation tolerant components;
- one or more starvation intolerant components;
- and
- a lubrication system, including:
- a storage tank configured to store a lubricant,
- a flow management valve configured to selectively direct the lubricant to the one or more starvation tolerant components,
- a main pump configured to receive the lubricant from the storage tank and to pump the lubricant to the flow management valve and to the one or more starvation intolerant components, and
- a make-up reservoir configured to provide a make-up volume of the lubricant to the lubrication system during a negative gravity event, the make-up reservoir configured to adjust a volume of the lubricant within the make-up reservoir between a normal operation volume and a negative gravity event volume.
A method of selectively supplying a lubricant to a starvation tolerant component of a gas turbine engine, comprising:
- operating a main pump configured to receive the lubricant from a storage tank and to pump the lubricant to a flow management valve and to a starvation intolerant component;
- detecting a negative gravity event;
- and
- causing the flow management valve to terminate delivery of the lubricant to the starvation tolerant component and to reroute the lubricant to supply the main pump.
Dependencies are inferred from the claim text.