A drive unit is disclosed. The drive unit includes a first drive source, a first torque converter, a second drive source, a second torque converter, and a transmission. A torque is inputted from the first drive source to the first torque converter. The first torque converter includes a first turbine. A torque is inputted from the second drive source to the second torque converter. The second torque converter includes a second turbine. The second turbine is coupled to the first turbine. The transmission is disposed between a drive wheel and both the first and second torque converters.

A hybrid module includes a torque converter, an electric motor, a cover plate, a connecting pin, a piston, and a pressure plate. The torque converter includes a turbine and an impeller, arranged together to form a hydrodynamic torus. The electric motor includes a rotor with a rotor carrier drivingly engaged with the impeller. The cover plate is fixed to and radially inside of the rotor carrier, and includes a tubular portion with an orifice. The connecting pin is sealed to the tubular portion and extends through the orifice. The piston is disposed on a first axial side of the cover plate, is fixed to the connecting pin, and is arranged to engage a torque converter clutch, and the pressure plate is disposed on a second axial side of the cover plate, opposite the first axial side, is fixed to the connecting pin, and is arranged to engage a K0 clutch.

A P1 hybrid module for a vehicle includes a housing, a motor stator, an input shaft, a resolver rotor, an output flange, a motor rotor, a housing plate, and a resolver stator. The housing is arranged for fixing to an engine and a multi-speed transmission. The motor stator is fixed to the housing. The input shaft is arranged for driving connection to a flange of a damper. The resolver rotor is fixed to the input shaft. The output flange is arranged for fixing to a torque converter. The motor rotor is rotatably fixed to the output flange. The housing plate is fixed to the housing by a first fastener. The resolver stator is fixed to the housing plate radially outside of the resolver rotor.

A rotor for a hybrid drivetrain includes a rotor carrier, at least one rotor segment, and a torque converter. The rotor carrier has a first tubular portion with an outer surface, and an annular portion with a first through hole. The at least one rotor segment is installed on the outer surface. The torque converter has an impeller with a first shell and a plurality of first blades fixed to the first shell, a cover with a second shell fixed to the first shell to form a hydraulic chamber and a fastener fixed to the second shell and extending through the first through hole, and a turbine disposed in the hydraulic chamber and including a third shell and a plurality of second blades fixed to the second shell.

Systems and methods for operating a hybrid powertrain or driveline that includes an engine and an integrated starter/generator are described. In one example, the integrated starter/generator may rotate a torque converter during a vehicle activation process if a vehicle soak time exceeds a threshold. The integrated starter/generator may not rotate the torque converter during a vehicle activation process if a vehicle soak time is less than the threshold.

A hybrid drive module, comprising a cover of a torque converter. The hybrid drive module further includes a carrier hub connected to a rotor of an electric motor and the cover, the hub including a first surface and a protrusion extending outward from the first surface. The hybrid drive module also includes an end ring disposed between the protrusion and the rotor and in contact with the first surface, wherein the end ring is engaged with the protrusion and the rotor, and the protrusion restrains the end ring and rotor utilizing an interference fit between the carrier hub and the end ring.

A control system for hybrid vehicles configured to improve energy efficiency by controlling a speed difference in a coupling. The hybrid vehicle comprises: a power split mechanism; an engine connected to a first rotary element; a first motor connected to the second rotary element; a second motor connected to the third rotary element; drive wheels to which a torque is delivered from the third rotary element; and a coupling comprising a drive member and a driven member. A controller is configured to change the speed difference in the coupling, and to change a speed or a torque of at least one of the first motor and the second motor after changing the speed difference in the coupling.

An electrified vehicle includes a transmission system including a differential and an electrically powered heating device configured to selectively warm a differential fluid of the differential. The electrically powered heating device is selectively powered to warm the differential fluid.

A motor assembly for a hybrid vehicle includes an electric motor, a shaft, a multiplate clutch, and a housing. The electric motor has a rotatable rotor with a carrier. The shaft is arranged for drivingly engaging a combustion engine. The multiplate clutch is drivingly engaged with the carrier for releasably engaging the electric motor to the shaft. The housing includes a center support with a hydraulic channel extending from radially outside of the electric motor to radially inside of the electric motor. In an example embodiment, the motor assembly has a torque converter fixed to the carrier. In some example embodiments, the motor assembly has a concentric slave cylinder for engaging the clutch. The concentric slave cylinder is hydraulically connected to the center support hydraulic channel. In an example embodiment, the motor assembly has a pressing plate in contact with the slave cylinder and the multiplate clutch.

A method for forming a rotor hub that includes a sheet metal cylinder including spline teeth including angularly spaced crests and valleys, a tube surrounding the cylinder, secured to the crests and supporting a rotor thereon, a hub secured to the cylinder and supported for rotation, a torque converter, and a flex plate secured to the hub and the torque converter.