公开(公告)号：US20190293204A1

公开(公告)日：2019-09-26

申请号：US15927471

申请日：2018-03-21

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Jeffry K. Kamenetz ,  James Joyce ,  Erin G. Kline ,  John M. Maljanian ,  Jay H. Hartman

IPC: F16K37/00 ,  B64D13/08 ,  B64D13/04 ,  B64D45/00

Abstract: An aircraft environmental control system (ECS) includes a first valve that is adjustable between a plurality of first positions to open or shut-off a bleed air flow that flows from an inlet of the first valve to an outlet of the first valve. A second valve includes an inlet in fluid communication with the first valve outlet, and is adjustable between a plurality of second positions to throttle the bleed air that flows from the inlet of the second valve to an outlet of the second valve. A valve position sensor outputs a position signal indicating a measured position among the plurality of second positions. A controller is in signal communication with the valve position sensor. The controller is configured to determine a primary effective area of the second valve based on the measured position, and to diagnose operation of the first valve based on the primary effective area.

公开(公告)号：US10711916B2

公开(公告)日：2020-07-14

申请号：US15927471

申请日：2018-03-21

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Jeffry K. Kamenetz ,  James Joyce ,  Erin G. Kline ,  John M. Maljanian ,  Jay H. Hartman

IPC: F16K37/00 ,  B64D13/04 ,  B64F5/60 ,  B64D13/08 ,  B64D45/00 ,  B64D13/06

Abstract: An aircraft environmental control system (ECS) includes a first valve that is adjustable between a plurality of first positions to open or shut-off a bleed air flow that flows from an inlet of the first valve to an outlet of the first valve. A second valve includes an inlet in fluid communication with the first valve outlet, and is adjustable between a plurality of second positions to throttle the bleed air that flows from the inlet of the second valve to an outlet of the second valve. A valve position sensor outputs a position signal indicating a measured position among the plurality of second positions. A controller is in signal communication with the valve position sensor. The controller is configured to determine a primary effective area of the second valve based on the measured position, and to diagnose operation of the first valve based on the primary effective area.