The invention provides a pneumatic circuit for supplying air to at least one discharge valve that is pneumatically actuated and to at least one depressurizing device for depressurizing an oil enclosure in a turbine engine, the pneumatic circuit comprising: a pneumatic control unit having at least one solenoid valve supplying compressed air to a discharge valve of a compressor of the turbine engine; at least one depressurizing device for depressurizing an oil enclosure of the turbine engine, the device including a compressed air ejector for depressurizing the oil enclosure; and a pneumatic bistable member that is supplied with air by different first and second compressed air sources and that is suitable for supplying the pneumatic control unit and the depressurizing device with air coming from the first or the second compressed air source as a function of the operating speed of the turbine engine.

The invention provides a pneumatic circuit for supplying air to at least one discharge valve that is pneumatically actuated and to at least one depressurizing device for depressurizing an oil enclosure in a turbine engine, the pneumatic circuit comprising: a pneumatic control unit having at least one solenoid valve supplying compressed air to a discharge valve of a compressor of the turbine engine; at least one depressurizing device for depressurizing an oil enclosure of the turbine engine, the device including a compressed air ejector for depressurizing the oil enclosure; and a pneumatic bistable member that is supplied with air by different first and second compressed air sources and that is suitable for supplying the pneumatic control unit and the depressurizing device with air coming from the first or the second compressed air source as a function of the operating speed of the turbine engine.

The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led, along a lubricant line (19), to a doser (20). The doser (20) doses the lubricant into a dosing line and, therefrom, into a compressed-air line (12) extending to the air motor. The amount of lubricant contained in the storage space (17) is controlled by changing the volume of the storage space (17) by directing the pressure of the compressed-air line (12) to the lubricant storage space (17).

A device for passing lubricant out of a lubricant collecting container to a lubricant pump, in particular for an oil circuit of an internal combustion engine. The device including a lubricant intake pipe and a sedimentation container, which is connected fluidically to the lubricant intake pipe.

A device for passing lubricant out of a lubricant collecting container to a lubricant pump, in particular for an oil circuit of an internal combustion engine. The device including a lubricant intake pipe and a sedimentation container, which is connected fluidically to the lubricant intake pipe.

The invention relates to a refrigerant compressor, comprising: a preferably hermetically sealable compressor housing; an electric drive unit, comprising a rotor (4) and a stator (3); a crankshaft (1), which is connected to the rotor (4) for conjoint rotation and which has a longitudinal axis (2); a piston-cylinder unit, which can be driven by the crankshaft (1); wherein the electric drive unit is designed as an external rotor motor and the rotor (4) has a carrier element (12) extending outward radially with respect to the longitudinal axis (2) at least in some sections and the carrier element (12) is connected to the crankshaft (1) for conjoint rotation. According to the invention, in order to enable an increased delivery rate of lubricant from a lubricant sump together with preferably low or reduced height of the compressor, a sleeve-shaped lubricant receiver (8) for centrifugally conveying lubricant from a lubricant sump formed in a bottom region of the compressor housing toward the piston-cylinder unit is provided on a side of the carrier element (12) facing away from the piston-cylinder unit (5), the sleeve-shaped lubricant receiver (8) being joined to the carrier element (12) for conjoint rotation.

A gas turbine engine including a compressor section including a compressor and a turbine section located downstream of the compressor section. The turbine section including a high pressure turbine, a low pressure turbine, a sump positioned between the high pressure turbine and the low pressure turbine, and a rotating cross flow arrangement defining a plurality of guiding passages fluidly coupling the compressor to the sump.

A gas turbine engine including a compressor section including a compressor and a turbine section located downstream of the compressor section. The turbine section including a high pressure turbine, a low pressure turbine, a sump positioned between the high pressure turbine and the low pressure turbine, and a rotating cross flow arrangement defining a plurality of guiding passages fluidly coupling the compressor to the sump.

A monitoring device of an oil flow mixed with air, including a tubular element coupled with at least one first and one second photoelectric sensor that emit a radiation along a first and a second optical line respectively, the tubular element being at least partially transparent to the radiation, the first and the second photoelectric sensor being mounted on the tubular element so that the first and the second optical line are mutually angled.