| US 7,584,619 B2 | ||
| System for reducing oil consumption in gas turbine engines | ||
| Charles Robert Granitz, Loveland, Ohio (US); and Mark Eden Zentgraf, Cincinnati, Ohio (US) | ||
| Assigned to General Electric Company, Schenectady, N.Y. (US) | ||
| Filed on Apr. 13, 2007, as Appl. No. 11/735,020. | ||
| Application 11/735020 is a division of application No. 09/998432, filed on Nov. 29, 2001. | ||
| Prior Publication US 2007/0180830 A1, Aug. 09, 2007 | ||
| Int. Cl. F02C 6/04 (2006.01) | ||
| U.S. Cl. 60—785 [60/39.08; 415/110; 184/6.4] | 8 Claims |
| 1. Apparatus, comprising:
a) a gas turbine engine;
b) a lubrication sump in the engine having a vent;
c) a pressurization chamber for pressurizing the sump;
d) an eductor in fluid communication with the vent;
e) means for tapping pressurized air from a compressor in the engine and delivering the pressurized air to the eductor;
f) valve means for activating and de-activating delivery of pressurized air to the eductor; and
g) a pressure sensor for ascertaining whether pressure in the pressurization chamber falls below that in the sump by a predetermined
amount and, if so, causing the valve means to deliver pressurized air to the eductor, to thereby reduce pressure in the sump.
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