Abstract: A multiple speed transmission includes an input member, an output member, first, second, third and fourth planetary gearsets each having first, second and third members, and a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets. The transmission includes a plurality of torque-transmitting mechanisms between the input and output members, wherein the torque transmitting mechanisms are selectively engageable in combinations of at least four to establish at least ten forward speed ratios between the input member and the output member.

Abstract: Connecting section for a two-part hub that support a driven shaft of a hybrid drive module having a first hub section and a second hub section. The connecting section can be arranged coaxially with the first hub section and the second hub section and can be arranged between the first hub section and the second hub section. The connecting section is designed as a sliding bearing.

Abstract: A gear unit for a powertrain of a motor vehicle includes a drive shaft, a driven shaft, first and second planetary gearsets and first and second shifting elements. The first shifting element drivingly connects the drive shaft to an input of the first planetary gearset, and the second shifting element drivingly connects the drive shaft to an input of the second planetary gearset. An output element of the second planetary gearset is connected to the input of the first planetary gearset to be fixed with respect to rotation relative to it, and an output of the first planetary gearset is at least indirectly drivingly connected to the driven shaft. A shared element is fixed with respect to relative rotation and, with an inner toothing, forms a ring gear of the first planetary gearset and, with an outer toothing, forms a sun gear of the second planetary gearset.

Abstract: Methods and systems for an electric motor system are provided. In one example, a motor system is provided which comprises a first electric machine rotationally coupled to a second electric machine by a planetary gear set that has three components: a ring gear, a sun gear, and a carrier with a plurality of planet gears. In the system, the first electric machine varies in size from the second electric machine and one of the planetary assembly components is permanently grounded.

Abstract: Various methods and systems are provided for a multi-speed electric axle assembly with three gear ratios. The multi-speed electric axle assembly includes one or more power supplies, one or more shafts operatively coupled to the one or more power supplies and a differential, and one or more Ravigneaux gear assemblies integrated with the one or more shafts. The one or more Ravigneaux gear assemblies of the multi-speed electric axle assembly providing the three gear ratios.

Abstract: Provided are a method for manufacturing a wet friction plate, whereby efficiency of the work of forming a fine groove on a friction material can be improved, the wet friction plate, and a wet multiple-plate clutch device having the wet friction plate. In the method for manufacturing a wet friction plate 200, a core metal 201 and a friction material 210 are prepared, a resin layer 203 is formed on the core metal, the friction material is attached onto the resin layer, and a fine groove 211 is formed in the friction material. Specifically, irradiation of a laser beam L is started on an exposed portion 205 of the core metal. A laser head 301 is displaced in an annular shape while continuously emitting the laser beam. Thus, annular fine grooves 204 and 211 are formed in the exposed portion of the core metal and the friction material.

Abstract: Provided are a wet friction plate and a wet multiplate clutch device capable of reduction drag torque while suppressing a decrease in the area of a friction member. The wet friction plate includes multiple friction members through oil grooves on a flat plate annular core metal. The friction member has first fine grooves opening at an inner peripheral edge of the friction member and extending to an outer peripheral edge side and second fine grooves opening at an outer peripheral edge of the friction member and extending to an inner peripheral edge side. The first fine groove and the second fine groove are formed to have a groove width of equal to or greater than 0.1 mm and equal to or less than 0.8 mm, and overlap portions overlapping with each other in a circumferential direction at the same position in a radial direction of the core metal.

Abstract: A torque converter disposed between a prime mover and an output shaft is disclosed. The torque converter includes a cover, an impeller, a turbine, and a first clutch. The impeller is unitarily rotated with the cover. The turbine is disposed opposite to the impeller. The first clutch is configured to allow and block transmitting power outputted from the prime mover to the cover.

Abstract: A shift control method for an automated manual transmission (AMT) of a vehicle includes: when a shift operation is started, a torque of the second motor is increased so that a change in an output torque of the output shaft due to a change in a torque of the first motor is minimized while the torque of the first motor is being decreased. According to the shift control method, the increased torque of the second motor is maintained to be constant while controlling transmission release, speed synchronization, and transmission coupling. After the control over the transmission coupling is completed, the torque of the second motor is controlled so that the output torque of the output shaft follows a predetermined target torque while the torque of the first motor is controlled to be increased.

Abstract: A hybrid power transmission mechanism includes an engine; a motor/generator having a rotor and a stator; a driven machine; a planetary gear mechanism having a sun gear, an internal gear drivingly connected to the rotor, a planetary gear, and a planetary carrier shaft including first and second extension shaft parts extending from the planetary gear in opposite directions; a first clutch switchable between a state of allowing transmission of power between the first shaft and the internal gear and a state of not allowing transmission of power therebetween; and a second clutch switchable between a state of allowing rotation of the sun gear and a state of not allowing rotation thereof. A first shaft that outputs power of the engine and a second shaft that inputs power to the driven machine are drivingly connected to the first and second extension shaft parts of the planetary carrier shaft, respectively.

Abstract: A wet friction disc includes a lubrication groove and a plurality of lands defined by the lubrication groove. The lubrication groove has a plurality of circumferential groove portions that extends in a circumferential direction and has a predetermined groove width in a radial direction, and a plurality of intersecting groove portions that extends in directions intersecting the circumferential direction. At least some of the circumferential groove portions have an arc shape such that an end in the circumferential direction is located adjacent to one of the lands in the circumferential direction and that the groove width is entirely contained within a range in the radial direction spanned by that land.

Abstract: Transmission system for a vehicle having an input arranged for connection to a drive source, and an output arranged for connection to a load. The transmission includes a transmission. The transmission includes first input shaft, a first output shaft connected to the output, and a first speed transforming gear connecting the first input shaft and the first output shaft, and a second input shaft, a second output shaft connected to the output, and a second speed transforming gear connecting the second input shaft and the second output shaft. The transmission includes a first coupling member, arranged for coupling the input to the first input shaft at a first speed ratio and a second coupling member, arranged for coupling the input to the second input shaft at a second speed ratio.

Abstract: A power transmission apparatus for a hybrid vehicle of which a second motor shaft gear of a second motor-generator is disposed on one side of a second motor shaft disposed in parallel with the first motor shaft, includes a planetary gear set disposed on the first motor shaft and including one rotation element and the other rotation element are fixedly connected to the engine output shaft and the first motor shaft, respectively, and one remaining rotation element is engaged to the other rotation element, and the planetary gear set in which a drive gear is connected to the remaining rotation element through a one-way clutch, and an output shaft disposed in parallel between the engine output shaft and the second motor shaft, externally gear-engaged with each of the drive gear and the second motor shaft gear through a driven gear fixedly connected to one side.

Abstract: A freewheel has a first ring which has a first blocking contour on a first axial side and a second ring which is rotatable relative to the first ring and which has a second blocking contour on a second axial side pointing toward the first axial side of the first ring. Tiltable blocking bodies can be caused to engage into the first blocking contour and into the second blocking contour. A switching element tilts the blocking bodies. A displacement unit axially displaces the second blocking contour relative to the first ring between an active setting, which is axially approximated to the first ring, and an inactive setting, which is axially remote from the first ring and in which torque-transmitting blocking of the first ring with the second ring is prevented in any setting of the blocking bodies.

Abstract: A first electric motor is coupled to a first rotating element of a first differential mechanism, and a second electric motor is coupled to a first rotating element of a second differential mechanism. A first rotating element coupling body, formed by coupling a second rotating element of the first differential mechanism and a second rotating element of the second differential mechanism with each other, is coupled to an output shaft. a second rotating element coupling body, formed by coupling a third rotating element of the first differential mechanism and a third rotating element of the second differential mechanism with each other, is coupled to a first connection/disconnection portion. A first rotating element of the first differential mechanism, the first rotating element coupling body, the second rotating element coupling body, a first rotating element of the second differential mechanism are aligned in this order on a collinear diagram.

Abstract: Aspects of the disclosure provide an electric actuator including a first driving source coupled to an output through a first pathway created by a transmission, a second driving source coupled to the output though a second pathway created by the transmission that, upon the electric actuator losses electrical power to the electric actuator, causes the output to be positioned at a fail-safe position, a differential coupled to the first driving source and the second driving source through a third pathway created by the transmission to store energy from the first driving source in the second driving source, and an eddy current brake coupled to the output through the transmission that reduces a speed at which the second driving source moves the output to the fail-safe position.

Abstract: A method of assembling an epicyclic gear train includes positioning a carrier, the carrier being a unitary structure with side walls and mounts unitary with one another, inserting intermediate gears through a central opening of the carrier, moving each of the intermediate gears into intermediate gear pockets, inserting baffles into the carrier, inserting a sun gear through the central opening, and moving the intermediate gears to intermesh with the sun gear, and moving a ring gear into engagement with the intermediate gears.

Abstract: A torque converter comprises a front cover, an impeller including an impeller shell fixed to the front cover, and a turbine including a turbine shell axially movable to frictionally engage the impeller shell such that the turbine shell forms a turbine piston of a lock-up clutch. A damper assembly disposed between the front cover and the turbine shell comprises: springs; a flange connected to the turbine shell and drivingly engaged with the springs; and a spring retainer supporting the springs and connected to a turbine hub. A piston plate may be disposed between the spring retainer and front cover and configured to be axially displaceable to force the turbine piston against the impeller shell for engagement of the lock-up clutch. A seal plate may be fixed to the front cover and disposed between the front cover and the piston plate with the piston plate sealed to the seal plate.

Abstract: An axle assembly having a gear reduction unit that is configured to operatively connect an electric motor to a drive pinion. The gear reduction unit includes at least two gear sets. At least one clutch is engageable to provide a torque path between the electric motor and the drive pinion.

Abstract: An electric axle is configured to selectively enable an electric motor to power a pair of drive shafts of a vehicle. The electric axle includes a planetary gearset configured to drivably couple an electric motor with first and second drive shafts coaxially arranged. The planetary gearset including a ring gear. A housing at least partially surrounds the planetary gearset and is configured to be grounded to the vehicle. A clutch is configured to selectively ground the ring gear with the housing to enable an electric motor to power the first and second drive shafts. The electric axle may include a second planetary gearset, namely a differential planetary gearset. The differential planetary gearset may include a carrier that is shared or common amongst the planetary gearset and the differential planetary gearset.