Diagnostic system for a closed fluid system

US11656146B2 · kind B2 · utility

Assignee

• The Boeing Company · US

Inventors

• Omid B. Nakhjavani · Tukwila, US
• Ryan K. Coleman · Leisure World, US
• Franz D. Betz · Seattle, US
• Greg Jackson · Sunrise, US
• Sean Warlick · Tukwila, US
• Darren Puigh · Bellevue, US
• Andrey A. Zaikin · Tukwila, US
• James Schimert · Tukwila, US
• Steven C. Runo · Bellevue, US

Key dates

• Filing date: Dec 6, 2017
• Grant date: May 23, 2023
• Expiry date: Apr 26, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B23/024
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A diagnostic system for a closed fluid system is provided. The closed fluid system includes a first fluid subsystem and a second fluid subsystem connected using a valve or valve/actuator. The diagnostic system includes a first sensor disposed in the first fluid subsystem, a second sensor disposed in the second fluid subsystem and a computer. The computer receives first time-ordered fluid level measurements and second time-ordered fluid level measurements from respectively the first sensor and the second sensor and performs a comparison of first fluid level of the first fluid subsystem and second fluid level of the second fluid subsystem. The computer produces a notification indicating a predicted transfer of hydraulic fluid when the first time-ordered fluid level measurements and the second time-ordered fluid level measurements have at least a threshold divergence and outputs the notification for display to a user.