Invention Grant
- Patent Title: Redundant electro-hydraulic servo valve (EHSV) control in a fuel metering system
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Application No.: US18340508Application Date: 2023-06-23
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Publication No.: US12000346B2Publication Date: 2024-06-04
- Inventor: Carthel C. Baker , Andrew D. Splitt
- Applicant: Woodward, Inc.
- Applicant Address: US CO Fort Collins
- Assignee: Woodward, Inc.
- Current Assignee: Woodward, Inc.
- Current Assignee Address: US CO Fort Collins
- Agency: Reinhart Boerner Van. Deuren P.C.
- Main IPC: F02C9/26
- IPC: F02C9/26 ; F02C7/232 ; F02C9/46 ; F23R3/34

Abstract:
A redundant fuel metering system and method for a multi-stage combustor that utilizes a fuel metering valve EHSV from a less critical combustor stage fuel metering system as a redundant backup to the main metering valve EHSV. In the event of a failure of the main FMV EHSV, a control module signals a transfer system to switch control of the main FMV to the less critical combustor stage fuel metering system EHSV, thus maintaining control of the FMV for the main combustor. In doing this, the transfer valve then drives the less critical combustor stage fuel metering system FMV to its failsafe position while maintaining control of the main system.
Public/Granted literature
- US20230417193A1 REDUNDANT ELECTRO-HYDRAULIC SERVO VALVE (EHSV) CONTROL IN A FUEL METERING SYSTEM Public/Granted day:2023-12-28
Information query
IPC分类: