公开(公告)号：US10816019B2

公开(公告)日：2020-10-27

申请号：US15969413

申请日：2018-05-02

Applicant: THE BOEING COMPANY

Inventor： Matthew D. Uhlman ,  Barry D. Hance ,  Herbert Guttler ,  Robert J. Hawk ,  Paul Smith ,  Patrick Fahey ,  Ellen A. Pifer ,  Christopher P. Beamis ,  Ali Abdelmagid ,  Patrick McCormick ,  Mark W. Lesyna

IPC: F15B21/04 ,  F15B21/042 ,  B64C13/40 ,  F15B11/08 ,  F15B20/00

Abstract: A hydraulic system (e.g., of an aircraft or other vehicle) includes a pump, a pressure line coupled to the pump and configured to distribute pressurized hydraulic fluid, and a return line configured to return hydraulic fluid to a reservoir. The hydraulic system also includes an auxiliary leakage valve coupled to the pressure line, to the return line, and to an actuator. The auxiliary leakage valve is configured to receive a control signal and, based on the control signal, selectively open a restricted fluid path. The restricted fluid path couples the pressure line to the return line to allow a restricted amount of the hydraulic fluid to flow from the pressure line to the return line.

公开(公告)号：US20190338793A1

公开(公告)日：2019-11-07

申请号：US15969413

申请日：2018-05-02

Applicant: THE BOEING COMPANY

Inventor： Matthew D. Uhlman ,  Barry D. Hance ,  Herbert Guttler ,  Robert J. Hawk ,  Paul Smith ,  Patrick Fahey ,  Ellen A. Pifer ,  Christopher P. Beamis ,  Ali Abdelmagid ,  Patrick McCormick ,  Mark W. Lesyna

IPC: F15B21/04 ,  F15B20/00 ,  F15B11/08 ,  B64C13/40

Abstract: A hydraulic system (e.g., of an aircraft or other vehicle) includes a pump, a pressure line coupled to the pump and configured to distribute pressurized hydraulic fluid, and a return line configured to return hydraulic fluid to a reservoir. The hydraulic system also includes an auxiliary leakage valve coupled to the pressure line, to the return line, and to an actuator. The auxiliary leakage valve is configured to receive a control signal and, based on the control signal, selectively open a restricted fluid path. The restricted fluid path couples the pressure line to the return line to allow a restricted amount of the hydraulic fluid to flow from the pressure line to the return line.