A work vehicle drive includes a housing; an electric machine at least partially housed within the housing, configured to generate rotational power, and comprising an interface coupling at an electric machine output; a transmission at least partially housed within the housing, rotationally coupled to the interface coupling, and configured to transfer at least a portion of the mechanical power from the electric machine to a drive output; a pump at least partially housed within the housing and configured to facilitate circulation of lubrication fluid about the transmission, wherein the pump is selectively driven, in a first mode of operation, by the rotational power of the electric machine; and a solenoid device at least partially housed within the housing and configured to selectively drive the pump in a second mode of operation.

A vehicle includes a motor, a gear mechanism connected downstream of the motor, a box that has a motor chamber that houses the motor, a gear chamber that houses the gear mechanism and lubricating oil, and an exhaust pipe. A first cooling box, in which cooling liquid that cools the motor is introduced, is configured on an outer circumference of the motor. A second cooling box, which is connected so that cooling liquid can circulate between the second cooling box and the first cooling box, is configured on an outer circumference of the box. The motor chamber is arranged at a position spaced further apart from the exhaust pipe than the gear chamber.

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 compact drive unit is predominantly intended for traction vehicles, especially for rail vehicles. This invention allows significant reduction of volume and weight of drive units. The drive unit comprises high-speed electrical motor (1) with passive cooling, which is supplied by power electronics converter (2), whose rotor is supported by bearings (3) along with pinion gear (4) of the input spur/helical gear (5). The output shaft (6) of the gear (5) is a part of the next following gear (7). Output shaft of this gear (7) can be connected either directly or by using the coupling (12) to the axle (8) of the traction vehicle, or to the wheel (9). Alternatively, in case the higher transmission ratio is required, it can be connected to another gears (10), where the output shaft of the gears (10) is connected to the wheel (9), or to the axle (8) of the traction vehicle directly or by using the coupling (12). The drive unit can be equipped with brake (13).

The invention relates to a lubricating oil deflector for a speed reduction gear of a turbomachine, the deflector comprising a body having a first end intended to be disposed facing a sun gear of the reduction gear, the first end being configured to receive oil from the sun gear and an opposite second end configured to discharge the oil from the body, the body including two side faces each intended to be disposed facing a planet gear of the reduction gear and each connecting the first and second ends together, the body including at least one inner oil guide channel that opens out at the first end and at the second end and is configured to discharge the oil by gravity through the second end.

Systems and methods for cooling power transmission systems are include providing oil through an aperture defined in a housing to a stator cooling ring, through the stator cooling ring and into stator cooling channels, through the stator cooling channels and into spaces defined between the housing and jet rings, and through holes in the jet rings and onto the end-windings. The stator cooling ring, stator cooling channels and jet rings can encircle the stator and end-windings and, via the holes in the jet rings, spray pressurized jets of oil from various angles onto the end-windings, and in particular middle regions thereof. Seals may be used between the jet rings and housing, and between the jet rings and stator ends. The seals may be compressed so as to form an interference fit between the jet rings and housing or stator ends as the case may be.

A thermostat for a transmission oil circuit has a thermostat inlet, a thermostat outlet, and a bypass channel, which fluidically connects the thermostat inlet to the thermostat outlet. A circuit inlet and a circuit outlet are provided for coupling to a cooler. A control element and a pressure loss element are accommodated in the interior of the thermostat housing. The pressure loss element is arranged in the bypass channel, and the control element is arranged between the thermostat inlet and the circuit inlet or the circuit outlet and the thermostat outlet. The thermostat can be connected directly to a housing of the transmission.

A rotary electric machine that includes a stator including a stator core and a coil, and including a radial protrusion for fastening, and a case that supports the stator core. The case includes a fastening portion to which the radial protrusion is fastened, paired stator holding portions located on respective sides of the fastening portion when viewed in an axial direction, and forming respective curved holding surfaces extending in the axial direction and abutting against or facing an outer peripheral surface of the stator core in a radial direction, and axial stator cooling oil passages formed in the respective paired stator holding portions.

A drive device includes a housing, and a rotary electric machine and a transmission housed in the housing. A lubricating oil for lubricating a gear of the transmission is stored in a bottom portion of the housing. The housing includes a refrigerant passage through which a refrigerant for cooling the rotary electric machine flows, and a storage portion adjacent to the refrigerant passage and configured to temporarily store the lubricating oil scooped up by the gear of the transmission.

An electric drive module (EDM) configured to generate and transfer drive torque to a driveline for propulsion of an electric vehicle. The EDM includes a gearbox assembly, an electric motor having a rotor and a stator, and a thermal management system. The thermal management system includes a fluid circuit configured to supply a fluid to the gearbox assembly, the rotor, and the stator, and a pump configured to direct the fluid through the fluid circuit. A valve is disposed on the fluid circuit and configured to selectively move between (i) a closed position where the fluid is not supplied to the stator, and (ii) an open position where the fluid is supplied to the stator for cooling thereof.