AIRCRAFT GAS-TURBINE ENGINE LUBRICATION SYSTEM Russian patent published in 2003 - IPC

FIELD: aircraft engines. SUBSTANCE: proposed lubrication system contains supply main line and pumping out system with pump to inlet of which pipeline with filter is connected to pump oil from sump. Pipeline with check valve is connected at pump outlet. Pump consists of gears installed in housing with end face walls. Channels for additional supply of oil are made in end face wall. For gears with module m<4 mm one channel is made in zone of conjugation of gear pitch circles. For gears with module m<4 mm two channels are made which is located on pitch circles from side of pump outlet. In pumps with wide gears channels can be made also on second end face wall in the same points as on first wall. Such design of engine lubrication system provides self-suction of pump making it possible to eliminate overfilling of sump and failures at oil pumping out. Such pumps can operate on air as working medium and are always ready for pumping out oil when it gets into pumping out line. EFFECT: improved operation reliability. 4 cl, 3 dwg