A baffle plate for a differential device disposed inside a differential case, includes a baffle plate main member made of synthetic resin and adapted to be disposed on one lateral side of a ring gear in the differential device; and an elastically deformable seal member attached to an outer peripheral edge portion of the baffle plate main member and adapted to contact a bottom wall portion of the differential case.

The system comprises an oil pump driven in conjunction with an output shaft of a transmission, a first oil path for supplying oil discharged from the oil pump to a lubrication system of the transmission, a second oil path arranged in parallel with the first oil path to guide the oil from the oil pump to a heat exchanger, and a valve inserted on an upstream side of the heat exchanger in the second oil path. The valve opens at a first set pressure to conduct the oil from the oil pump to the second oil path. The oil is supplied to the first oil path in a low vehicle speed area below the first set pressure, so that oil supply necessary for the lubrication system can be ensured. The oil is supplied to the second oil path in a high vehicle speed area over the first set pressure.

A power transmission apparatus includes a first electric motor, a power split mechanism, a second electric motor, a case, a support wall, and a breather mechanism. The case accommodates the first electric motor, the power split mechanism, and the second electric motor. The support wall is provided between the power split mechanism and the second electric motor. The breather mechanism is located in a rotational angle range that is at least equal to 90 degrees and is smaller than 180 degrees. The breather mechanism has a through hole and a breather chamber. The breather chamber is provided at a case inner side end of the through hole and is opened in a direction that does not oppose a virtual surface that passes through the rotational axis at a rotational angle of 90 degrees of the second electric motor.

A differential device includes a differential case having an inner surface with an oil introducing part. The oil introducing part is located between, in an axial direction, a corresponding one side gear support surface and at least a part of a circumferential rim of a window in a circumferential direction. The oil introducing part at least partially protrudes from the inner surface toward a first axial line so as to guide oil such that the oil deviates from a flow direction from the corresponding one side gear support surface to the window along the inner surface and flows around the window.

A transmission system may include a first bevel gear, a second bevel gear and a baffle. The second bevel gear is meshed with the first bevel gear, and includes a plurality of gear teeth arranged in a circumferential array. The baffle includes a baffle wall and a baffle outlet. The baffle wall is arranged next to and covers a subset of the gear teeth. The baffle outlet forms a lubricant outlet passage that extends through the baffle wall.

In one exemplary embodiment, an epicyclic gear train for a turbine engine includes a first shaft that is rotatable about an axis. A ring gear includes first and second portions each having an inner periphery with teeth. The first and second portions are secured to one another at a radial interface. At least one of the first and second portions includes a flange that extends radially outward. The flange is fixed to the first shaft in an axial direction by a fastening element. A carrier supports star gears that mesh with the ring gear. A sun gear meshes with the star gears and is coupled to a second shaft.

A baffle plate for a differential device disposed inside a differential case, includes a baffle plate main member made of synthetic resin and adapted to be disposed on one lateral side of a ring gear in the differential device; and an elastically deformable seal member attached to an outer peripheral edge portion of the baffle plate main member and adapted to contact a bottom wall portion of the differential case.

A gearbox including a housing; an input member rotatably supported in the housing; a rotatable shaft supported in the housing; gearing providing a power transmitting connection between the input member and the rotatable shaft; and an oil feed member held against rotation relative to the housing; wherein the oil feed member has at least one helical formation for causing oil within the gearbox to be fed axially of the oil feed member, on rotation of the rotatable shaft.

An epicyclic gear train for a turbine engine includes a gutter with an annular channel. A rotating structure includes a ring gear that has an aperture that is axially aligned with the annular channel. Axially spaced apart walls extend radially outward relative to the rotating structure to define a passageway. The passageway is arranged radially between and axially aligned with the aperture and the annular channel. The walls are configured to inhibit an axial flow of an oil passing from the aperture toward the annular channel.

Provided is a lubricant guiding structure in an automatic transmission in which a baffle plate configured to regulate the movement of a lubricant agitated by a driven sprocket is provided at one side, where an oil pump is located, in the direction of a rotational axis of the driven sprocket. As viewed from the rotational axis direction, a division wall disposed to extend across a chain is provided closer to the chain than a base of the baffle plate. As viewed from the rotational axis direction, the baffle plate is provided with a guide wall extending along a torque transmission-side chain of the chain wound on the driven sprocket. As viewed from the rotational axis-direction, the guide wall includes an inclined portion inclined in the direction coming closer to the chain as the distance to the distal end side decreases.