FIELD: mechanical engineering; gas turbine engines. SUBSTANCE: with engine operating at minimum speed, air outlet from oil spaces through vent lines is and air is directed from oil space whereto air penetrates through seals, into manifold through scavenge oil pump, oil tank and further on through centrifugal breather into atmosphere with engine operating at working speed, air is let out into manifold along vent lines opened to order by pressure of air flowing from setting through seals. EFFECT: eliminated overheating and coking of oil in vent lines, provision of optimum pressure differential in oil seals. 2 cl, 1 dwg
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