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US 2019/0193704 A1Published application
Hydraulic failure isolation valve
AssigneeGoodrich Corporation
InventorsBRIAN KEITH ZELL, MARC GEORGIN, PAUL R. BURTE, GREGORY HICKEY, EFREM E. AYICHEW, CLIFTON R. BOGGS, ERIC MERAZ, BRIAN RALPH
Life of this patent
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Abstract
Braking control systems, such as for an aircraft, use a hydraulic failure isolation valve intermediate an accumulator power source and a dual valve assembly for mechanical operation when a hydraulic power source experiences a disruption.
Claims19
A brake control system for maintaining hydraulic pressure, comprising:
- a hydraulic power source configured for fluid communication with a dual valve assembly through a main hydraulic line;
- an accumulator power source configured for fluid communication with the dual valve assembly through an accumulator hydraulic line;
- and
- a hydraulic failure isolation valve comprising a check valve operative between a first position and a second position, the hydraulic failure isolation valve positioned along the accumulator hydraulic line and configured for operation in the event of a disruption between the hydraulic power source and the dual valve assembly, wherein the first position is configured to maintain fluid communication along the main hydraulic line and the second position is configured to maintain fluid communication along the accumulator hydraulic line through the check valve of the hydraulic failure isolation valve.
1 more element
A hydraulic failure isolation valve, comprising:
- a check valve operable between a first position to maintain hydraulic pressure between a hydraulic power source and a dual valve assembly along a main hydraulic line and a second position to maintain hydraulic pressure between an accumulator power source and the dual valve assembly along an accumulator hydraulic line;
- and
- a sensing line operative between the main hydraulic line and the hydraulic failure isolation valve, configured to move the check valve between the first position and the second position in the event of a disruption between the hydraulic power source and the dual valve assembly.
A method of maintaining hydraulic pressure in a brake control system, comprising:
- maintaining hydraulic pressure between a hydraulic power source and a dual valve assembly through a main hydraulic line;
- maintaining hydraulic pressure between an accumulator power source and the dual valve assembly through an accumulator hydraulic line;
- and
- engaging a hydraulic failure isolation valve along the accumulator hydraulic line in the event of a disruption to the hydraulic power source to provide the hydraulic pressure between the accumulator power source and the dual valve assembly.
1 more element
Dependencies are inferred from the claim text.