A drive unit includes an electric motor, a torque converter, a reducer, a first shaft, a second shaft, and a clutch. The torque converter amplifies a torque generated by the electric motor when the torque is directed in a first rotational direction. The reducer is configured to output the torque by reducing a speed of rotation of the electric motor. The first shaft transmits the torque from the electric motor to the torque converter. The second shaft transmits the torque from the torque converter to the reducer. The clutch is disposed in the interior of the reducer. The clutch allows or blocks transmission of the torque between the first shaft and the second shaft.

A controller for a transmission including a continuously variable transmission mechanism including a primary pulley to which power of an engine is input, a secondary pulley that transmits the power to a drive wheel, and a belt that is wound around the primary pulley and the secondary pulley, increases a rotation speed of the secondary pulley as a torque transmission capacity of a lock-up clutch of a torque converter provided between the engine and the primary pulley increases, and the lock-up clutch is engaged, performs a gear shift process to change a gear ratio of the continuously variable transmission mechanism to a high side or a low side so as to cancel return movement of a drive shaft which has been twisted by the engagement of the lock-up clutch.

An industrial power system includes a hybrid electric transmission assembly to transfer power from an internal combustion engine to an industrial load. The transmission assembly includes a first driveshaft coupled to the engine and a second driveshaft coupled to the load with a primary drivetrain gear assembly coupling the first driveshaft to the second driveshaft. An electric drive gearset is disposed between the primary drivetrain gear assembly and the load. An electric motor is couplable to the electric drive gearset, thereby allowing power to be passed from the electric motor to drive the load and bypass the primary drivetrain gear assembly during the gear change. The system may include a plurality of electric motors each having an electric motor axis and an output gearset coupled to the electric drive gearset, where each of the electric motor axii are spaced radially outward from the first and second driveshafts.

An industrial power system includes a hybrid electric transmission assembly to transfer power from an internal combustion engine to an industrial load. The transmission assembly includes a first driveshaft coupled to the engine and a second driveshaft coupled to the load with a primary drivetrain gear assembly coupling the first driveshaft to the second driveshaft. An electric drive gearset is disposed between the primary drivetrain gear assembly and the load. An electric motor is couplable to the electric drive gearset, thereby allowing power to be passed from the electric motor to drive the load and bypass the primary drivetrain gear assembly during the gear change. The system may include a plurality of electric motors each having an electric motor axis and an output gearset coupled to the electric drive gearset, where each of the electric motor axii are spaced radially outward from the first and second driveshafts.

A power transmission device includes a housing that accommodates a power transmission mechanism, a partition section that is provided in the housing and that supports the power transmission mechanism, a first oil path that is provided inside the partition section, a second oil path that is provided inside the partition section, a recess that is provided in the partition section, and a filter member that is disposed inside the recess. The recess is provided with an opening facing a direction of an axis of rotation of the power transmission device. The first oil path and the second oil path communicate via the recess.

An industrial power system includes a hybrid electric transmission assembly to transfer power from an internal combustion engine to an industrial load. The transmission assembly includes a first driveshaft coupled to the engine and a second driveshaft coupled to the load with a primary drivetrain gear assembly coupling the first driveshaft to the second driveshaft. An electric drive gearset is disposed between the primary drivetrain gear assembly and the load. An electric motor is couplable to the electric drive gearset, thereby allowing power to be passed from the electric motor to drive the load and bypass the primary drivetrain gear assembly during the gear change. The system may include a plurality of electric motors each having an electric motor axis and an output gearset coupled to the electric drive gearset, where each of the electric motor axii are spaced radially outward from the first and second driveshafts.

An industrial power system includes a hybrid electric transmission assembly to transfer power from an internal combustion engine to an industrial load. The transmission assembly includes a first driveshaft coupled to the engine and a second driveshaft coupled to the load with a primary drivetrain gear assembly coupling the first driveshaft to the second driveshaft. An electric drive gearset is disposed between the primary drivetrain gear assembly and the load. An electric motor is couplable to the electric drive gearset, thereby allowing power to be passed from the electric motor to drive the load and bypass the primary drivetrain gear assembly during the gear change. The system may include a plurality of electric motors each having an electric motor axis and an output gearset coupled to the electric drive gearset, where each of the electric motor axii are spaced radially outward from the first and second driveshafts.