CONTROL SYSTEM COMMAND DEVICE FOR GAS-TURBINE ENGINE Russian patent published in 1994 - IPC

FIELD: control of gas-turbine engines. SUBSTANCE: control unit is essentially spring-loaded double-belt slide valve 11 with drilling 12 installed in bushing 10; drilling 12 communicates with first electromagnetic valve 8 and via jet 13, with rod space of servo piston whose piston space 4 communicates with second electromagnetic valve 9 via valve saddle of shut-off device formed by small end of double-step slide valve 15; intermediate space 16 of shut-off device formed by large- diameter end of slide valve 15 and body 3 communicates through throttling slit 17 with end space 18 of slide valve 11 which opposes its spring-loaded space 19. Device is provided with first additional electromagnetic valve 20 fitted between end space 28 and constant-pressure channel 21, throttle stack 22 linking rod space 5 with first electromagnetic valve 8, second additional electromagnetic valve 23 placed between channel 21 and servo piston space 5, and jets 24 and 25. EFFECT: improved reliability of control. 1 dwg