OIL SYSTEM OF AN AIRCRAFT GAS TURBINE ENGINE Russian patent published in 2021 - IPC F02C7/06 

FIELD: aircrafts.

SUBSTANCE: invention relates to the field of aircraft engine building and pertains to the structure of the oil system of an aircraft gas turbine engine. The oil system of an aircraft gas turbine engine comprises an oil tank, a discharge pump with a bypass valve and a pressure line connected to the lines for oil supply to the oil cavities of the bearing supports of the rotor and the accessory gear box. The pressure line of the discharge pump is connected to the oil tank via an additional line with a dosage throttle apparatus. The dosage throttle apparatus is made in the form of a body built into the additional line, located wherein is a seat with a conical needle configured to move axially along the longitudinal axis of the throttle apparatus, and is equipped with an adjustable needle position lock.

EFFECT: invention allows for continuously variable regulation of the pressure of oil supply to the engine and increase in the reliability of operation of the engine due to the maintained optimal value of the oil supply pressure in the entire range of operating modes.

3 cl, 2 dwg