Proportional force modification of passive spool for control of secondary nozzle circuits

US12313004B2 · kind B2 · utility

Assignee

• Collins Engine Nozzles, Inc. · US

Inventors

• Brandon P. Williams · Johnston, US
• Michael Ferrarotti · Durham, US
• Murtuza Lokhandwalla · South Windsor, US
• Todd Haugsjaahabink · Granby, US
• Russell P. Rourke, Jr. · Town of East Granby, US
• Jay W. Kokas · Town of East Granby, US
• Richard E. Versailles · 3a Avenida SO, US

Key dates

• Filing date: Jul 21, 2023
• Grant date: May 27, 2025
• Expiry date: Aug 1, 2043

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23N2241/20
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A system includes an injector having a scheduling valve assembly and a nozzle in fluid communication with the valve assembly. The scheduling valve assembly is configured for regulation of flow from an inlet of the injector to the nozzle. The injector includes two fluid circuits between the inlet of the injector and two respective outlets of the nozzle for staged flow output from the nozzle. A first one of the two fluid circuits is a primary circuit, and a second one of the two fluid circuits is a secondary circuit. A solenoid valve is connected in fluid communication with the scheduling valve assembly, wherein the solenoid valve is configured to adjust position of a hydromechanical valve spool of the valve assembly.