DRY SUMP PISTON ENGINE LUBRICATION SYSTEM Russian patent published in 2023 - IPC F01M1/02 F01M1/12 F01M11/06 

FIELD: lubrication systems.

SUBSTANCE: invention relates to lubrication systems for reciprocating engines, in particular for aircraft reciprocating internal combustion engines. The lubrication system of a piston engine with a dry sump contains an oil tank 1 having an oil intake device 2 with a gravitational drive 3, a pressure pump 4 connected to the oil intake device 2 of the oil tank 1, and the output to the pressure oil pipeline 5, which is connected to the lubrication channels 6 of the engine parts , at least two oil collectors 9, 11, interconnected by overflow oil pipelines 8 and placed - one lower under the crankcase 10 of the engine, and the other upper one - in the cylinder head 12, and a suction pump 13 connected by oil pipelines 14 to the oil collectors 9, 11 and the oil tank 1. The lubrication system is equipped with a gravitational switch 15 installed in the oil pipelines between the oil collectors 9, 11, and the suction pump 13, the oil tank is sealed, equipped with a vent valve 16, the body of which is connected to the gravitational drive 3. The oil intake device 2 of the oil tank 1 is made in in the form of oil pipelines 18 with gravity valves 1 9, located at opposite ends of the oil tank 1, and rigidly connected to each other and with the gravitational drive 3. The gravitational drive 3 of the ventilation valve 16 and the oil lines 18 of the oil intake device 2 is made in the form of a cruciform bracket 20, with two horizontal opposite ends 21 pivotally mounted in the middle part oil tank 1, rigidly connected by one of the vertical ends 22 with the oil lines 18 of the oil intake device 2, and the other vertical end 23 with the body 17 of the ventilation valve 16, and the oil collectors 9, 11 are equipped with oil receivers 24, and the oil receiver 24 of the lower oil collector 9 is equipped with gravity valves 25 located along the periphery of the oil collector 9.

EFFECT: invention makes it possible to increase the efficiency of lubrication of high-speed parts of a piston engine in all modes of its operation by providing a continuous process of supplying lubricant under pressure at various positions of the aircraft.

1 cl, 5 dwg