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US 10,513,949 B2Granted
Auxiliary journal oil supply system
AssigneeUnited Technologies Corporation
InventorsFrancis Parnin, Justin W. Heiss
Life of this patent
Estimating the term…
Abstract
A fluid circulation system may comprise a main pump configured to provide oil to a journal bearing. An auxiliary system including a pump system may be configured to provide oil to the journal bearing. A manifold may be configured to mix the oil from the main pump with oil from the auxiliary system. A journal delivery line may be configured to deliver the oil from the manifold to the journal bearing.
Claims20
A fluid circulation system, comprising:
- a main pump configured to provide oil to a journal bearing;
- an auxiliary system including a pump system configured to provide oil to the journal bearing continuously through an auxiliary journal supply line;
- a manifold configured to mix the oil from the main pump with oil from the auxiliary system;
- and
- a journal delivery line configured to deliver the oil from the manifold to the journal bearing, wherein the auxiliary journal supply line is fluidly coupled uninterruptedly and directly to the manifold.
2 more elements
A gas turbine engine, comprising:
- a fan drive gear system;
- a fan mechanically coupled to the fan drive gear system and configured to rotate about an axis, the fan drive gear system including a journal bearing;
- a main pump configured to provide oil to a manifold;
- and
- an auxiliary system comprising an auxiliary journal supply line, the auxiliary journal supply line fluidly coupled uninterruptedly and directly to the manifold, the auxiliary journal supply line configured to continuously provide oil to the manifold, wherein the manifold is configured to supply the journal bearing with oil from the main pump and the auxiliary system.
2 more elements
A method of supplying fluid to journal bearings of a fan drive gear system, comprising:
- collecting oil from a bearing compartment into a compartment sump;
- collecting oil from a gutter of the fan drive gear system into an auxiliary reservoir;
- pumping oil from at least one of the auxiliary reservoir or the compartment sump to a manifold through an auxiliary journal supply line fluidly coupled uninterruptedly and directly to the manifold, wherein the auxiliary journal supply line is configured to deliver oil continuously to the manifold;
- pumping oil from a main reservoir to the manifold;
- and
- delivering the oil from the manifold to a journal bearing.
3 more elements
Dependencies are inferred from the claim text.