A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

Systems for removing excess coolant oil and air from a radial air gap between a stator and a rotor of an electric motor are provided. In one example, the systems may include a ring covering the radial air gap, the ring configured to route coolant out of the radial air gap via one or more channels.

Systems for removing excess coolant oil and air from a radial air gap between a stator and a rotor of an electric motor are provided. In one example, the systems may include a ring covering the radial air gap, the ring configured to route coolant out of the radial air gap via one or more channels.

Various disclosed embodiments include oil systems, electric motors, and vehicles. In an illustrative embodiment an electrical motor system includes an oil reservoir, a motor, and an oil delivery system. The oil reservoir is configured to hold oil therein. The oil delivery system includes a heat exchanger. The oil delivery system is configured to operate in a low-temperature mode, bypassing the heat exchanger, while the oil temperature is below a first predetermined temperature; operate in a high-temperature mode, directing oil traversing the oil delivery system through the heat exchanger while the oil temperature is above a second predetermined temperature; and operate in an intermediate-temperature mode, partially bypassing the heat exchanger while the oil temperature is between the first predetermined temperature and the second predetermined temperature.

A rotor/stator assembly for a motor, including: a rotor shaft including an internal channel; a rotor core disposed adjacent to the rotor shaft; and end windings disposed adjacent to an end of the rotor shaft and an end of the rotor core; wherein the rotor shaft includes a passage passing through a wall of the rotor shaft adjacent to the end thereof, thereby forming a path by which a cooling fluid passes from the internal channel of the rotor shaft to the end of the rotor core and the end windings when the rotor shaft and rotor core are rotated/rotating.

A rotor/stator assembly for a motor, including: a rotor shaft including an internal channel; a rotor core disposed adjacent to the rotor shaft; and end windings disposed adjacent to an end of the rotor shaft and an end of the rotor core; wherein the rotor shaft includes a passage passing through a wall of the rotor shaft adjacent to the end thereof, thereby forming a path by which a cooling fluid passes from the internal channel of the rotor shaft to the end of the rotor core and the end windings when the rotor shaft and rotor core are rotated/rotating.

A power generation transport includes a gas turbine, an inlet plenum coupled to an intake of the gas turbine, a generator driven by the gas turbine, and an air intake and exhaust module including an air inlet filter housing, an intake air duct coupled to the housing at a first end and to the inlet plenum at a second end, and an exhaust collector coupled to an exhaust of the gas turbine. The transport further includes at least one base frame. The frame mounts and aligns the gas turbine, the inlet plenum, the generator, and the air intake and exhaust module. The intake air duct is mounted on the base frame so as to be disposed underneath the gas turbine, and extend along the base frame from an exhaust end side of the gas turbine to an intake end side, in a longitudinal direction of the power generation transport.

A power generation transport includes a gas turbine, an inlet plenum coupled to an intake of the gas turbine, a generator driven by the gas turbine, and an air intake and exhaust module including an air inlet filter housing, an intake air duct coupled to the housing at a first end and to the inlet plenum at a second end, and an exhaust collector coupled to an exhaust of the gas turbine. The transport further includes at least one base frame. The frame mounts and aligns the gas turbine, the inlet plenum, the generator, and the air intake and exhaust module. The intake air duct is mounted on the base frame so as to be disposed underneath the gas turbine, and extend along the base frame from an exhaust end side of the gas turbine to an intake end side, in a longitudinal direction of the power generation transport.

This gas dryer includes: a first drying tower having a first desiccant provided therein; and a second drying tower having a second desiccant provided therein. Either the first drying tower or the second drying tower is switched to a drying circuit side for drying hydrogen gas of an electric device, and another of the first drying tower or the second drying tower is switched to a reactivation circuit side for reactivating the first desiccant or the second desiccant provided therein. The gas dryer includes a cooler which is provided on the reactivation circuit side and which, with only supply of compressed air, generates air having such a temperature that can condense moisture in the gas on the reactivation circuit side.