Disclosed is a wet friction member for use in a wet clutch that can achieve an increased coefficient of static friction (μs) between it and a counterpart surface in frictional contact with it. The wet friction member includes base paper that is formed using a fiber base material and a filler, and a binder for curing the base paper. The filler includes rubber particles made of at least one kind of highly lipophilic rubber material. The rubber particles contains carbon black for reinforcement.

A venting arrangement for use with power transfer assemblies of the type used in motor vehicle driveline and drivetrain applications includes a vent oil deflector assembly. The vent oil deflector assembly is associated with an inside wall within an enclosed chamber and is configured to deflect lubricating oil splashed within the chamber away from an air venting passageway. The deflection feature and the venting feature are integrated into a common assembly.

A venting arrangement for use with power transfer assemblies of the type used in motor vehicle driveline and drivetrain applications includes a vent oil deflector assembly. The vent oil deflector assembly is associated with an inside wall within an enclosed chamber and is configured to deflect lubricating oil splashed within the chamber away from an air venting passageway. The deflection feature and the venting feature are integrated into a common assembly.

The present invention discloses a dual-clutch automatic transmission cooling and lubrication hydraulic control system and a vehicle. The dual-clutch automatic transmission cooling and lubrication hydraulic control system comprises a clutch lubrication control valve whose outlet end is connected with a clutch lubricating oil circuit, a gear lubrication control valve whose outlet end is connected with a gear and bearing lubricating oil circuit, the inlet end of the gear lubrication control valve being connected with the inlet end of the clutch lubrication control valve in parallel at the first common end, further comprises a mechanical pump and an electronic pump whose inlet ends are connected to an oil tank respectively. The outlet end of the mechanical pump and the outlet end of the electronic pump are connected in the second common end in parallel, and a cooler disposed between the first common end and the second common end. The dual-clutch automatic transmission cooling and lubrication hydraulic control system disclosed herein have a variety of working modes, reducing the defects such as large displacement of the mechanical pump when working alone.

A friction plate for wet-running applications includes an annular main body having a first and a second surface. A friction lining having first oil grooves and second oil grooves is disposed on at least one of the first and the second surfaces. The first oil grooves extend from a radially inner end face of the friction lining in the direction towards a radially outer end face of the friction lining and terminate at a distance short of the radially outer end face, and the second oil grooves are disposed directly adjoining the first oil grooves in the radial direction and have a smaller maximum width in the circumferential direction than the first oil grooves. The first oil grooves are provided with a cross-sectional widening in the region of a radially outer end. The cross-sectional widenings of the first oil grooves are disposed at different radial heights.

A friction plate for wet-running applications includes an annular main body having a first and a second surface. A friction lining having first oil grooves and second oil grooves is disposed on at least one of the first and the second surfaces. The first oil grooves extend from a radially inner end face of the friction lining in the direction towards a radially outer end face of the friction lining and terminate at a distance short of the radially outer end face, and the second oil grooves are disposed directly adjoining the first oil grooves in the radial direction and have a smaller maximum width in the circumferential direction than the first oil grooves. The first oil grooves are provided with a cross-sectional widening in the region of a radially outer end. The cross-sectional widenings of the first oil grooves are disposed at different radial heights.

A clutch carrier assembly for a transmission comprising: an axis of rotation, a clutch carrier outer ring concentric about the axis of rotation and having: an outer surface including undulating peaks; and, an inner surface including an axially extending stiffening rib portion; and, an outer race having a radially outward protrusion including a notch arranged for receiving and retaining the axially extending stiffening rib portion.

A separator plate for use as a clutch plate for a multiplate wet clutch is formed of a steel plate. The steel plate has a chemical composition containing, on a basis of percent by mass, C from 0.03 to 0.08%, Si from 0 to 1.0%, Mn from 0.2 to 0.8%, P at 0.03% or less, S at 0.01% or less, and Al at 0.05% or less, so as to satisfy a formula, 5*C %−Si %+Mn %−1.5*Al %<1. In addition, the steel plate has the chemical component containing at least one of Nb from 0.03 to 0.4%, V from 0.01 to 0.3%, and Ti from 0.01 to 0.3%, so as to satisfy a formula, 0.04<(Nb %/1.4)+(V %/1.1)+Ti %<0.3. Then, an average diameter of particles of a carbide as a precipitate is controlled to be from 20 to 100 nm. The plate is formed by heating, hot rolling, winding and forming.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

A clutch assembly includes a clutch housing, a clutch hub, a clutch pack and an oil deflector. The clutch pack includes at least one friction plate connected to one of the clutch housing and the clutch hub and at least one separator plate connected to the other of the clutch housing and the clutch hub. The oil deflector includes a circumferential wall and a flange. The circumferential wall includes a drain slot. The flange extends radially outwardly from an end of the circumferential wall and is mounted to one of the at least one separator plate and the at least one friction plate. The circumferential wall and the first flange cooperate to define a channel. Lubricant flowing along the clutch housing flows to the channel where the lubricant is directed away from the clutch pack and out of the drain slot.