SYSTEM TO CONTROL FUEL DELIVERY INTO GAS-TURBINE ENGINE Russian patent published in 2004 - IPC

FIELD: mechanical engineering; gas-turbine engines.

SUBSTANCE: proposed system contains pump, meter made in form of metering needle with servopiston, electrohydraulic converter and metering needle position electric pickup coupled with electronic regulator and meter, comparison control valve connected by spring with needle, pneumohydraulic converter connected with channel to supply air from compressor, hydraulic passage chamber with throttles and interthrottle chamber connected with comparison valve. First throttle is connected with engine mode setter. Command pressure generated by penumohydraulic converter proportional to pressure in compressor is reduced in different throttles owing to changing of throttle passage area which causes change of pressure in interthrottle chamber and control space of comparison valve and, consequently, change of engine fuel rate by the law as spool shifts, depending on position of mode setter not shown in the Drawing, and defines passage section area of first throttle.

EFFECT: provision of simple system to control fuel delivery into engine.

1 dwg