A mechanical part for an aircraft turbomachine is made of metal and includes at least one profiled surface configured to ensure an oil flow during operation. The surface has a hydrophobic and/or lipophobic coating or a surface texturing rendering the surface hydrophobic and/or lipophobic.

A mechanical part for an aircraft turbomachine, the mechanical part being made of metal and comprising at least one profiled surface configured to ensure an oil flow during operation. According to the invention, the surface includes a more hydrophobic and/or lipophobic coating than the surface or a surface texturing rendering the surface more hydrophobic and/or lipophobic

Methods and systems are provided for a multi-speed transmission. The multi-speed transmission includes a housing, an electric motor with a stator and a rotor positioned within the housing, and a planetary assembly positioned on a first axial side of the electric motor. The transmission further includes a first and second clutch unit spaced away from one another, each including a synchronizer, and designed to selectively rotationally couple to the rotor and to rotationally couple the rotor to different gears in the planetary assembly and where the electric motor and planetary assembly are coaxially arranged.

A lubricant guide shell (32) for includes a first, radially extending section (33), which is provided for being situated axially opposite an end face (35) of a torque converter (9) in an installed state of the lubricant guide shell (32). The first section (33) transitions radially outwardly into a second, axially extending section (34), which, in the installed state of the lubricant guide shell (32), is configured for axially at least partially and radially outwardly encompassing the torque converter starting from the first section (33). The first section (33) as well as the second section (34) are configured to be completely circumferential.

The invention relates to a transmission (10), preferably a bevel helical transmission, having a transmission housing (1) and having a drive shaft (2.1), on which a fan (9) is mounted, and comprising a ring cooler (4), which surrounds the drive shaft (2.1), oil lines (7.1, 7.2) for transporting transmission oil in an oil circuit from the interior of the transmission housing (1) to the ring cooler (4) and from the ring cooler (4) into the interior of the transmission housing (1), and an air-guiding hood (3.1, 3.2) surrounding the ring cooler (4) for guiding air suctioned by the fan (9) onto the ring cooler (4).

An encapsulated gear train gear train for a machine comprising a support frame, which is non-encasing, an input shaft rotatably mounted in the support frame, an output shaft rotatably mounted in the support frame, gears configured to operatively connect the input shaft with the output shaft, and an encasement configured to encapsulate the input shaft, the output shaft, the gears, and at least a portion of the support frame, wherein the support frame is configured to be mounted on a structure of the machine such that the support frame does not apply any loads onto the encasement.

A bearing lubrication structure for a wind power gearbox includes a housing, a bearing, a planet carrier, and an oil scraper assembly. The planet carrier is rotatably disposed on the housing through the bearing. A first end face of the planet carrier and a second end face of the housing form a receiving chamber. The oil scraper assembly is disposed on the second end face and is located in the receiving chamber. The oil scraper assembly includes an oil scraper member. The oil scraper member is configured to, when the planet carrier rotates, collect oil from the first end face and make the oil flow into the bearing.

A drive device includes a motor having a motor shaft that rotates, a motor housing unit that houses the motor, a gear unit that transmits rotation of the motor shaft to an intermediate shaft, and an inverter housing unit that houses the inverter, wherein the inverter housing unit is disposed above the intermediate shaft, a lower wall portion of the inverter housing unit faces outside air, and the inverter housing unit has a vent that allows an inside of the inverter housing unit and an outside below the inverter housing unit to communication with each other.

A lubricating device of a power transmitting system having a structural member. The lubricating device includes an oil piping assembly fixed to the structural member at a plurality of positions and having an oil passage through which a lubricant oil flows. The oil piping assembly is a resin piping assembly including a plurality of divisional components which cooperate to define a circumference of the oil passage along a length of the oil passage and which are formed of a resin material. The divisional components have respective interfacial surfaces and are bonded together with interfacial surfaces thereof being held in contact with each other. The divisional components of the resin piping assembly include a base divisional component provided with a plurality of fixing portions, and the resin piping assembly is fixed to the structural member at the plurality of positions through only the fixing portions.

A vehicular power transmitting system including a power transmitting member, an oil pump, and an oil piping assembly, and the oil piping assembly includes an oil piping body having an oil inlet and fixed, and a branch pipe. The branch pipe has a width direction parallel to a longitudinal direction of the oil piping body, and includes proximal and distal end portions. The proximal end portion is connected to the oil piping body, and the distal end portion has a delivery nozzle from which the oil is delivered toward the lubricated portion. The branch pipe has an opening formed in the proximal end portion, for communication of the branch pipe with the oil piping body, the opening having a dimension in a width direction of the branch pipe, which dimension is larger than a dimension of the distal end portion in the width direction of the branch pipe.