US 12,454,915 B2
Force modification of passive valve spools for control of nozzles
Brandon P. Williams, Johnston, IA (US); Jason A. Ryon, Carlisle, IA (US); Murtuza Lokhandwalla, South Windsor, CT (US); Todd Haugsjaahabink, Amherst, MA (US); and Charles E. Reuter, Granby, CT (US)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Aug. 26, 2022, as Appl. No. 17/896,522.
Prior Publication US 2024/0068404 A1, Feb. 29, 2024
Int. Cl. F02C 7/232 (2006.01); F02C 7/22 (2006.01); F16K 31/06 (2006.01); F16K 31/08 (2006.01)
CPC F02C 7/232 (2013.01) [F02C 7/222 (2013.01); F16K 31/0613 (2013.01); F16K 31/0679 (2013.01); F16K 31/082 (2013.01); F05D 2260/60 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system comprising:
an injector including a scheduling valve assembly and a nozzle in fluid communication with the scheduling valve assembly, wherein the scheduling valve assembly is configured for regulation of flow from an inlet of the injector to the nozzle; and
an electromagnetic device operatively connected to a hydromechanical valve spool of the scheduling valve assembly to selectively adjust position of the hydromechanical valve spool in the scheduling valve assembly;
wherein the electromagnetic device includes:
a first permanent magnet mounted on the hydromechanical valve spool; and
a first electromagnet mounted to the scheduling valve assembly proximate to the first permanent magnet for selectively applying a force to the first permanent magnet to adjust position of the hydromechanical valve spool within the scheduling valve assembly;
a second permanent magnet mounted to the hydromechanical valve spool at a position upstream relative to the first permanent magnet; and
a second electromagnet mounted to the scheduling valve assembly proximate the second permanent magnet at a position in the hydromechanical valve assembly upstream relative to the first electromagnet;
wherein the first permanent magnet and the first electromagnet are mounted proximate a downstream end of the scheduling valve assembly.