A vehicle drive unit assembly having a ring gear with a plurality of ring gear teeth extending from an outer surface thereof. At least a portion of a lubricant collector having a body portion with a first side, a second side, a first end portion, a second end portion and an intermediate portion is disposed proximate to and directly adjacent at least a portion of the ring gear. The lubricant collector has one or more first receiving portions and/or one or more second receiving portions defining a collector reservoir therein. The one or more first receiving portions and/or one or more second receiving portions of the collector reservoir receive an amount of lubricating fluid that is expelled or thrown from the ring gear.

A limited oil displacement system is positioned within a tandem housing of a tandem of a work vehicle. The tandem includes a tandem oil where a chain assembly is at least partially submerged. The limited oil displacement system may include one or more oil displacement unit used for displacing the tandem oil. The oil displacement unit has an upper portion and a lower portion coupled to and positioned under the upper portion. A volume of the upper portion is larger than a volume of the lower portion such that when the tandem of the work vehicle pivots about a lateral axis, the oil displacement unit displaces the tandem oil more than when the tandem of the work vehicle remains horizontally.

A differential unit includes: a pinion gear shaft including a shaft portion and a gear portion; a ring gear meshing with the gear portion; a differential case that rotates with the ring gear; a differential gear mechanism accommodated in the differential case; a differential carrier having an accommodating space accommodating the differential case and the ring gear; and a pair of bearings supporting the pinion gear shaft such that the pinion gear shaft is rotatable with respect to the differential carrier. The differential carrier has an inner cylindrical portion, an outer cylindrical portion, and a connecting portion that are provided as a single member. The inner cylindrical portion has the pair of bearings fitted in the inner cylindrical portion. The outer cylindrical portion is provided radially outward of the inner cylindrical portion. The connecting portion connects the inner cylindrical portion and the outer cylindrical portion.

A transmission (G) for a motor vehicle includes a pump (P), an oil sump (S), a hydraulic control unit (HCU), a gear set (RS) for providing different transmission ratios between an input shaft (GW1) and an output shaft (GW2) of the transmission (G), and a cavity (HY) arranged on an input side, in which a torque converter (TC) and/or an electric machine (EM) are accommodated. The cavity (HY) is connected to the oil sump (S) via a gap (C) configured for a passive return of oil out of the cavity (HY) into the oil sump (S). In order to reduce the gap (C), a separating element (T) is configured for making it difficult for oil to flow out of the oil sump (S) to the cavity (HY). A drive train comprising such a transmission (G) is also provided.

A gas turbine engine includes an engine core, a power gearbox, and a lubrication system. The engine core is configured to drive rotation of at least one shaft. The power gearbox is configured to transfer torque from the at least one shaft to other parts of the gas turbine engine. The lubrication system is configured to deliver lubrication to the power gearbox to reduce friction and cool rotating components within the power gearbox.

An eccentric oscillating speed reducer includes an input rotor, a first rotor, a second rotor, a planetary rotor, a flow passage, a contact portion and a radial relief groove. The flow passage includes an axial gap located between the planetary rotor and a contact member. The flow passage conducts a lubricant oil that is forced to flow by a centrifugal force. The contact portion is placed in a drive force transmission path from the planetary rotor to the second rotor. The contact portion includes: a planetary rotor end surface of the planetary rotor located on a side where the second rotor is placed; and a second rotor end surface of the second rotor, which is opposed to the planetary rotor end surface. The radial relief groove forms a portion of the flow passage and extends through a radial width of the planetary rotor end surface.

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.

A transfer structure for a vehicle which retains a stable amount of lubricant in a coupling chamber and maintains a cooling effect for a coupling by agitation of the lubricant irrespective of an inclination of a vehicle in a front-rear direction. The transfer structure includes a gear chamber housing first and second gears meshing with each other; a coupling chamber housing a coupling provided coaxially with the first gear; an introduction path which introduces a lubricant in the gear chamber into the coupling chamber; and a return path through which the lubricant in the coupling chamber is returned to the gear chamber. The return path is inclined downward toward the gear chamber from an opening that opens in a lower part of an intermediate part of the coupling chamber in a vehicle front-rear direction to an oil discharge hole that opens in the gear chamber.

A gearbox comprising a gearbox housing at least partially surrounding a cavity, an oil sump connected to the gearbox housing and surrounding another cavity, and a separating element separating the cavity from the other cavity and having a passage through which oil located in the cavity is fed into the other cavity. The passage is arranged in a plane at an intersection line between a first oil level upper side and a second oil level upper side. The oil is fed from the cavity into the other cavity exclusively through the passage. The separating element has a passage section and a separating section, the passage section protrudes from the separating section in the radial direction.

A Lubrication system for an engine component of a gas turbine engine, such as a planetary gearbox. The system comprises a main lubrication system comprising a main tank configured to supply lubricant to the engine component, and a main reservoir configured to collect lubricant scavenged from the engine component after lubrication; and an auxiliary lubrication system comprising an auxiliary reservoir configured to collect lubricant scavenged from the engine component after lubrication and to supply scavenged lubricant to the engine component. Main reservoir comprises an interior and the auxiliary reservoir is located within the interior of the main reservoir. The auxiliary reservoir comprises an upper portion, a lower portion and a lubricant pickup region, the upper portion comprising an opening arranged to permit lubricant to overflow into the main reservoir, and the lower portion of the auxiliary reservoir being shaped to cause lubricant to drain towards the lubricant pickup region.