Integrated emergency lubrication system having single feed line

Details Integrated emergency lubrication system having single feed line Integrated emergency lubrication system having single feed line

1990-06-27

1991-05-28

Lazarus, Ira S.

Lubrication

Systems

With safety or indicating means

184 611, 184 626, F01M 118

Patent

active

050186019

ABSTRACT:
An integrated emergency lubrication system for lubricating the bearings of a gas turbine engine in the event that the normal lubrication system for the engine fails for any reason. The emergency system includes an accumulator for storing oil, derived from the normal lubrication system, that is released in a controlled manner, mixed with air and supplied, as a mist to lubricate the engine's bearings for several minutes after the normal lubrication system fails. Energy for operating the emergency lubrication system is derived from high pressure compressed air admitted from the compressor section of the engine when the oil pressure of the normal lubrication falls, a portion of the compressed air being pressure-regulated and combined with oil from the accumulator to form an air/oil mist that is sprayed over the bearings to be lubricated. A flow control valve is provided to control the flow of the oil from the accumulator under the influence of high pressure compressed air, for admixture with the regulated air to form the mist. Thus the oil flow rate remains substantially constant independently of the upstream and downstream air pressures and the oil temperatures.

REFERENCES:
patent: 1896036 (1933-01-01), Bell
patent: 2667236 (1954-01-01), Graves
patent: 3816040 (1974-06-01), Janik
patent: 4717000 (1988-01-01), Waddington et al.
patent: 4858644 (1989-08-01), Decker

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