The present disclosure relates to an in-wheel driving apparatus, and an in-wheel driving apparatus includes a case having an interior space, a first gear disposed in the interior space to be rotatable about a first rotary shaft, a second gear engaged with the first gear and disposed in the interior space to be rotatable about a second rotary shaft, and a first partition wall including a first area provided along a circumference of the first gear and a second area extending from one end of the first area in a direction that is away from the first rotary shaft, and disposed in the interior space.

Disclosed is a motor operating module, where the motor operating module includes a motor including a rotor and a stator, a gear unit provided on one side of the motor, and being configured to receive torque of the rotor and to transmit the torque to outside, and a housing configured to accommodate the motor and the gear unit in an inner space, wherein the inner space of the housing comprises a front space formed on a first side of the motor, a rear space formed on a second side of the motor opposite to the first side, rear-facing connection flow paths extending from the front space toward the rear space and providing a path for a cooling fluid to flow, and the cooling fluid is churned by the rotation of the gear unit to flow from a lower region of the housing into the rear space via the rear-facing connection flow paths. According to the present disclosure, a motor may be cooled by using a churning effect of an oil caused by rotation of a gear without a separate operating device such as a pump.

A lubricant supply for a powertrain in an electrically driven motor vehicle has a hydraulic oil pump, which can be driven by a drive actuator, a lubricant supply point and a lubricant reservoir. The hydraulic oil pump can generate a first lubricant volume flow from the lubricant reservoir to the lubricant supply point and a second lubricant flow volume from the lubricant supply point or an additional lubricant supply point in the lubricant reservoir. The drive actuator is an electric motor. The lubricant supply point is arranged in a traction motor with a rotor shaft and a motor housing. The additional lubricant supply location is disposed in a traction transmission. The lubricant supply points can be supplied with lubricant by way of the first lubricant volume flow.

A transfer is located on an axial first side that is one side in axial direction relative to a transmission, and a rotating electric machine is located coaxially with a transmission output member, between the transmission and the transfer in the axial direction.

Disclosed is a driving system having an oil circulation structure in which churned oil is collected in a housing and in which the collected oil is efficiently distributed to driving structures, which include a motor and a speed reducer, thereby smoothly cooling and lubricating the respective driving structures. In addition, it is possible to adjust the level of the oil depending on whether the driving structures are in a low-load state or a high-load state, thereby improving lubrication and cooling performance.

An intermediate wall is provided with a return oil hole through which oil discharged from a friction engagement device returns toward an oil reservoir. A chain drive is disposed adjacent to the intermediate wall. The chain drive transmits a driving force from an input member and/or a rotary electric machine to an oil pump. There is provided an oil guide through which oil flowing through the return oil hole is guided to a region other than a chain placement region inside a case. The chain placement region is a region where a chain of the chain drive is placed.

A drive unit for a powertrain of an electrically driveable motor vehicle is disclosed having a first electrical machine and a second electrical machine and an output shaft, wherein a rotor of the second electrical machine is connected to the output shaft for conjoint rotation. The drive unit also has a disconnect clutch, by which a rotor of the first electrical machine for torque transmission is connectable to the output shaft, wherein the rotor of one of the electrical machines is at least indirectly supported radially on the rotor of the other electrical machine by at least one bearing.

An axle assembly having a housing assembly, an electric motor module, and a transmission module. A first lubricant passage may route lubricant from the housing assembly to the transmission housing cavity of the transmission module. The first lubricant passage may extend through a motor housing, a motor cover, and a first transmission housing.

Arrangement (1) comprising an electric machine (2), a gearbox (3), a shaft (9) coupling the electric machine (2) with the gearbox (3) and having an axial blind bore (18) extending from a machine-side end (19) of the shaft (9) into the gearbox (3), a coolant insertion element (21) configured to supply a coolant into the bore (18) and a coolant conduction element (22) extending inside the bore (18) from the machine-side end (19) into the gearbox (3) and defining a flow path (23) for the inserted coolant.

An automatic gearbox for a motor vehicle includes a lubricating or cooling device, a hydraulic pump having a first pump connection via which, in a forward operation of the hydraulic pump, the lubricating or cooling device can be supplied with a hydraulic fluid conveyed by the hydraulic pump during forward operation and thus flows through the first pump connection, and with a parking lock, which can be moved between an engaged state and a disengaged state and has a first operating space, into which the hydraulic fluid conveyed by the hydraulic pump during forward operation can be introduced so that the parking lock is hydraulically operable and an adjustment of the parking lock from one of the states into the other state can thereby be effected.