FUEL FEEDING SYSTEM OF AIR-BREATHING ENGINE Russian patent published in 2010 - IPC F02C9/26 

FIELD: power industry.

SUBSTANCE: system is intended for fuel feeding to combustion chamber of air-breathing engine with possibility of multiple activation and deactivation of feeding. System includes fuel flow metering device, constant pressure drop control (CPDC) of fuel on metering device, which consists of sensitive and actuating elements, as well as fuel cutoff valve and locking valve of CPDC. During cutoff of fuel feeding, the fuel cutoff valve connects spring cavity of actuating element of CPDC to fuel discharge lines to injectors, as a result of which the actuating element of CPDC closes the discharge of metered fuel to engine injectors. When switching on fuel feeding, locking valve of CPDC connects control cavity of actuating element of CPDC to fuel discharge line to engine injectors, thus ensuring the specified quick action of movement of actuating element of CPDC for opening; when the specified fuel pressure drop is reached on metering device, the locking slide valve of CPDC cuts off control cavity of actuating element of CPDC from fuel discharge line to engine injectors.

EFFECT: increasing engine efficiency and increasing flight range of aircraft.

2 cl, 1 dwg