Patent ID: 11867076
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A system for lubricating an aeronautical engine and a reduction gearbox associated with the aeronautical engine, the system comprising a lubricating oil reservoir feeding at least a first oil supply pump supplying a first lubrication circuit of the reduction gearbox opening into at least one lubrication enclosure of the reduction gearbox and in parallel a second lubrication circuit of the aeronautical engine opening into lubrication enclosures of the aeronautical engine, recirculation pumps at the exit of the aeronautical engine and of the reduction gearbox returning the oil to the oil reservoir, wherein the second circuit comprises a variable-section jet pump supplied at least by said at least one first supply pump bypassing the first circuit, a second driven supply pump being integrated into the second circuit downstream of the variable-section jet pump, a part of a flow rate in the first circuit being collected by the variable-section jet pump to supply the second circuit.