In a vehicle transmission device including an oil in a case, the case comprises a solid defoaming agent disposed therein, and the solid defoaming agent is disposed at a position at which the solid defoaming agent is at least partially located above the oil level of the oil during running of the vehicle.

A planetary reduction gear (10) for an aircraft turbine engine, said reduction gear comprising a rotatable sun gear, a rotatable ring gear (9) and satellite gears meshed with the sun gear and the ring gear and carried by a planet carrier intended to be fixed to a stator, the reduction gear further comprising an annular trough for recovering and channelling lubrication oil that is mounted around the ring gear, characterised in that the reduction gear further comprises an annular deflector (22) fixed to the ring gear and configured to route the oil exiting radially towards the outside of the ring gear up to the trough by virtue of centrifugal forces, the trough comprising an annular chamber (18) which is axially remote relative to a median plane (P) substantially passing through the centre of the ring gear, and an annular duct (20) located on a side of said chamber and emerging in said chamber.

An oil tank for an engine is provided with a separator that reduces the amount of entrained air in the oil tank. The separator includes a body with an outer wall, a divider wall, and an outlet. The divider wall is located between the outer wall and at least a first portion of the outlet. The divider wall is offset from a curved portion of the outer wall, which defines a flow channel through which the oil flows towards the outlet. The oil increases speed as travels around the divider wall. This movement keeps the oil with some and/or more entrained air closer to the outer wall. In contrast, the oil with less or no entrained air moves closer to the divider wall and may travel more directly to the outlet.

A gas turbine engine includes a fan section including a fan rotor, a compressor section, a turbine section including a fan drive turbine that drives the fan rotor through a gear reduction, and a lubrication system that supplies oil to the gear reduction and includes a lubricant pump that supplies a mixed air and oil to an inlet of a deaerator during operation. The deaerator includes a shell defining a cavity and a separator that separates the mixed air and oil in the cavity, delivers separated air to an air outlet of the deaerator and delivers separated oil back into an oil tank during operation. A method of designing a gas turbine engine is also disclosed.

A degas bottle for inducing a cyclonic direction of flow to incoming coolant is disclosed. The degas bottle includes a body and an air separator having a cylindrical wall. An incoming coolant inlet is attached to the upper end of the air separator and is positioned at a tangent with respect to the cylindrical wall of the air separator, thus inducing cyclonic action as the coolant enters the air separator. The air separator may be of a cylindrical shape or of a conical shape. As air trapped coolant tangentially flows into the air separator, it will follow the cylindrical or conical shape of the air separator. The centrifugal force keeps the incoming coolant pressed against the inner wall of the air separator coolant on the wall while air separates from the coolant. The cyclonically flowing coolant circles downward to the reservoir while air remains on top of the coolant.

Oil System for Hinges is a mechanism that provides door hinges with a controlled consistent oiling to prevent the problems related to the lack of lubrication or/and for the sake of scenting. It is mainly a small article placed on the top of the hinge pin cap. It is provided with a lubricant chamber and a lubricant flow-controlling mechanism. The means of controlling the lubricant flow can be passive, active or indirect.

Oil System for Hinges is a mechanism that provides door hinges with a controlled consistent oiling to prevent the problems related to the lack of lubrication or/and for the sake of scenting. It is mainly a small article placed on the top of the hinge pin cap. It is provided with a lubricant chamber and a lubricant flow-controlling mechanism. The means of controlling the lubricant flow can be passive, active or indirect.

The present application concerns a method for separate lubrication of a drive system for a motor vehicle, the system including a compressor and an internal combustion engine including a top end and a bottom end that are coupled together, the method including: lubricating the bottom end with a lubricating composition CL1 having an SAE J300 grade defined by the formula (X)W(Y) in which X represents 0 or 5 and Y represents 4, 8, 12, 16 or 20; lubricating the top end with a lubricating composition CL2 different from the lubricating composition CL1; and lubricating the compressor with a lubricating composition CL2 or with a lubricating composition CL3 different from the lubricating compositions CL1 and CL2.

A gas turbine engine comprises bearing(s). A structure supporting the bearing defines a bearing cavity surrounding the at least one bearing, an ambient chamber and an intermediate chamber having a portion between the bearing cavity and the ambient chamber, with at least one wall forming a passage from the bearing cavity to the ambient chamber and through the portion of the intermediate chamber. A tube is received in the passage and having a first end open to the bearing cavity and a second end open to the ambient chamber, the second end adapted to be connected to a conduit for fluid communication between the bearing cavity and the through the tube, wherein a portion of or near the first end of the tube is sealingly joined to the at least one wall, and the second end of the tube contacts the at least one wall and is free to move relative to the at least one wall.

A sump assembly for use in a gas turbine engine includes a housing and a shaft assembly. The housing is arranged about a central axis of the sump assembly to define a cavity configured to house oil and high-pressure gasses. The shaft assembly is mounted to rotate about the central axis and to direct the high-pressure gasses into the housing.