GAS-TURBINE ENGINE FUEL SUPPLY SYSTEM Russian patent published in 2017 - IPC F02C9/26 

FIELD: engines and pumps.

SUBSTANCE: gas-turbine engine fuel supply system fall within the domain of the drive engineering, specifically of the air vehicle gas-turbine engine fuel supply system. The system comprises a controller that is related to detector elements of the engine operating conditions, a high-lift pump and a main fuel pump for the fuel supply, switches for the attachment of the pumps with the control devices that are connected to the controller, and also fuel pressure transmitters that are mounted on the pumps output and connected to the controller. In the system there is a regulable hydraulically actuated fuel-injection pump that comprises a restricting element with a pilot engine, a gear-type hydraulic motor and a gear wheel pump that are kinematically interconnected, and a fuel pressure transmitter at an output. With regard to the above mentioned, the gear-type hydraulic motor input is hydraulically attached to the high-lift pump output through the restricting element, the gear-type hydraulic motor output is hydraulically attached to the gear wheel pump output, and a pilot engine of a restricting element is hydraulically attached to a switch.

EFFECT: invention allows to improve the energy efficiency and to lower the fuel heating by means of the decrease of the fuel offtake from the high-pressure fuel pump and also by means of the main fuel pump work at the mode with the greater degree of efficiency value.

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