A driving device includes a first one-way clutch OWC1 provided on a power transmission path between a driving source and a driven portion which becomes in an engaged state when rotational power in one direction of the driving source side is input to the driven portion side and becomes in a disengaged state when rotational power in the other direction of the driving source side is input to the driven portion side and which becomes in a disengaged state when rotational power in one direction of the driven portion side is input to the driving source side and becomes in an engaged state when rotational power in the other direction of the driven portion side is input to the driving source side, a connection/disconnection unit which is provided in parallel with the first one-way clutch OWC1 on the power transmission path, and a second one-way clutch OWC2 provided in parallel with the first one-way clutch OWC1 and in series with the connection/disconnection unit on the power transmission path which performs an operation opposite to that of the first one-way clutch OWC1.

An automotive axle includes a housing including gears and a bath lubricating the gears, the bath including gear oil and about 0.1 to 5 wt. % secondary alcohol ethoxylate based on total weight of the bath such that during automotive operation at temperatures less than a threshold, reverse micelles form to trap air bubbles in the bath, emulsifying the bath, and at temperatures greater than the threshold, the reverse micelles dissipate.

A wheel driving unit including a casing in which an electric motor and a speed reducer are incorporated, the wheel driving unit being disposed in a rim of a wheel so as to rotate the wheel, wherein a portion of the wheel driving unit located below the electric motor and the speed reducer is a lubricant reservoir for storing lubricant in the casing, and wherein a protrusion is provided at a lower portion of the lubricant reservoir so as to protrude in a direction toward an inner circumferential surface of the rim.

A vehicle drive device includes an electric motor that is configured to drive a vehicle, a case that houses therein the electric motor and a lubricating oil storage unit that stores lubricating oil, and a soundproof material that covers one side portion of the case. The one side portion of the case has a through hole through which a shaft member is inserted. An outer surface of the soundproof material is covered with a cover member. The cover member includes a partition wall portion that blocks a space between an opening of the through hole and the soundproof material.

An axle assembly having a differential carrier that includes a bearing support wall that at least partially defines a first lubricant chamber. A rotor output flange that is fixedly coupled to a rotor may at least partially defines a second lubricant chamber. At least one seal may separate the first lubricant chamber from the second lubricant chamber.

A vehicle drive device that includes a case forming a first accommodating space that accommodates a speed change device and a second accommodating space that accommodates a rotary electric machine; an storage that is disposed under the first accommodating space and stores oil; a hydraulic pump including a suction that suctions the oil from the oil storage; a first oil passage that supplies the oil discharged by the hydraulic pump to the speed change device as hydraulic oil; a second oil passage that supplies the oil discharged by the hydraulic pump to the rotary electric machine as cooling oil; and a third oil passage that returns the oil supplied to the rotary electric machine, from the second accommodating space to the oil storage, by allowing the oil to flow in a direction from the second accommodating space toward the first accommodating space.

An active transfer case for a motor vehicle may comprise a clutch assembly configured to rotatably couple a primary output shaft to an input sprocket when engaged. The clutch assembly may include a clutch pack having a plurality of clutch plates, and a clutch hub having a clutch hub center defined between an inner ring and an outer ring. The outer ring of the clutch hub may have a hub aperture placing the clutch hub center in fluid communication with the clutch plates. The active transfer case may further comprise a retainer slidingly inserted in the clutch hub center between the inner ring and the outer ring. The retainer may include a retainer aperture that aligns with the hub aperture of the clutch hub when the clutch assembly is engaged to permit a flow of a lubricant fluid from the clutch hub center to the clutch plates.

An electrical drive unit for an electrically at least partially driveable motor vehicle and also to a drive arrangement for an electrically at least partially driveable motor vehicle, comprising an electrical drive unit according to the disclosure. An electrical drive unit for an electrically at least partially driveable motor vehicle comprises an electrical drive machine and also an output device for transmitting a torque, which is provided by the electrical drive machine, to driven vehicle wheels of a motor vehicle, and also comprising a torque converter, which is arranged in the torque transmission path between a rotor of the electrical drive machine and the output device, for the purpose of matching the torque which is provided by the electrical drive machine to a respective torque requirement.

A vehicle drive device includes: a casing within which lubricating oil is received; a rotating electrical machine provided within the casing, and including a stator with a coil; a temperature sensor provided within the casing; and a control device that functions as: a coil temperature estimation device executing a first temperature estimation in which correlation with a detected temperature is relatively high, and a second temperature estimation in which the correlation is relatively low; a determination device determining whether or not positional relationship between the temperature sensor and oil level is in a permitted state that permits the first temperature estimation; and a limitation device limiting load factor of the rotating electrical machine based on a result of the first temperature estimation when being in the permitted state, and limiting the load factor based on a result of the second temperature estimation when not being in the permitted state.

An axle system having a first axle assembly, a second axle assembly, and a conduit. The conduit may fluidly connect the first axle assembly to the second axle assembly such that lubricant may flow between a first housing assembly of the first axle assembly and a second housing assembly of the second axle assembly.