Pressure fed oil drain for gas turbine engine sump
AssigneeGeneral Electric Company
InventorsKevin Michael DO, Keith Lloyd JONES
Life of this patent
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Abstract
A pressure fed oil drain for gas turbine engine (10) includes an oil sump (48) and a passage (60, 63) in selective flow communication with the oil sump (48), the passage in flow communication with a drain (62), the passage being pressurized and creating a differential between the passage and ambient atmosphere (65), the drain is disposed at an elevation beneath a passage feature (64) when the turbine engine is disposed at an extreme attitude angle, the passage (63) extending upwardly when in the extreme attitude angle.
Claims20
A pressure fed oil drain for a gas turbine engine, comprising:
- an oil sump for a shaft bearing;
- a passage in flow communication with said oil sump, said passage for use in failure conditions;
- a pressure differential between said passage and atmospheric conditions;
- a drain disposed near a lower position of said passage;
- a wall adjacent said drain being disposed at a preselected angle which is equal to or greater than an extreme attitude angle of an engine centerline;
- said drain location and said wall providing for formation of an oil pool to cover said drain in said extreme attitude angle.
A pressure fed oil drain for gas turbine engine, comprising:
- an oil sump and a passage in selective flow communication with said oil sump;
- a oil seal positioned at one end of said sump;
- said passage in flow communication with a drain, said passage being pressurized and creating a differential between said passage and ambient atmosphere;
- said drain disposed at an elevation beneath a passage feature when said turbine engine is disposed at an extreme attitude angle;
- said passage extending upwardly when in said extreme attitude angle.
A pressure fed oil drain for a gas turbine engine, comprising:
- an oil sump;
- at least one seal retaining oil in said oil sump;
- a drain passage in overflow flow communication with said oil sump, said passage being pressurized;
- a drain located at a lower position of said drain passage;
- a passage wall adjacent to said drain and a feature creating a pool of said oil during seal failure;
- a geometry of said drain, passage and said feature at an extreme attitude position causing said pressure to force said oil from said drain upwardly through a passage portion downstream of said drain.
Dependencies are inferred from the claim text.