Patent ID: 9046002
Filing Date: 2015-06-02
Classification: F01D,F02C,F05D,F16N

Abstract:
1. An oil supply system for an aircraft engine, comprising: at least one closed oil circuit, including: an oil tank having a closing valve associated with an outlet opening of the oil tank connecting to a suction line, an oil pump, at least one consumer of oil, a pressure line supplying oil from the oil pump to the at least one consumer and from the at least one consumer to the oil tank, a negative pressure relief line including a shut-off valve connected between the suction line and the pressure line, the shut-off valve being constructed and arranged to fluidly connect the pressure line to the suction line after shutdown of the engine and closing of the closing valve when a certain negative pressure is reached in the suction line to provide pressure relief to the suction line to reduce the negative pressure in the suction line.