A transmission (2) of a motor vehicle includes a first sub-transmission (5) including a first input shaft (7) and a countershaft (11) coupled to the first input shaft (7) via a constant ratio (ic). The transmission (2) further includes a second sub-transmission (6) including a second input shaft (8), the second sub-transmission (6) being a planetary transmission (PG) with a sun gear (24), a ring gear (22), and a carrier (23). Moreover, the transmission (2) includes an output shaft (9), and a shift element (E). The carrier (23) is coupleable to the output shaft (9) via the shift element (E), and the ring gear (22) is the second input shaft (8) of the second sub-transmission (6).

The present invention is a powertrain for a hybrid vehicle, comprising a driving/receiving machine (20), a thermal engine (10) and engine shaft (12), a speed variation device (14) including an engine epicyclic gear train (24) with a sun gear (34) and a crown (42) which are each connected to the engine shaft (12) by an engine controlled coupling (26, 28) and to a fixed part (40) of the powertrain by a one-way automatic coupling (30, 32). A planet gear carrier (46) and a machine epicyclic gear train (60) are arranged on a shaft (62) substantially parallel to engine shaft (12). The planet gear carrier comprises a sun gear (64), a crown (72), a planet gear carrier (68) and an epicyclic gear train controlled coupling (88). The speed variation device (14) comprises a device (94) for connecting/disconnecting electric machine (20) with machine epicyclic gear train (60).

A hybrid drive device has an internal combustion engine, a clutch transmission which has at least one free partial transmission and a partial transmission connected to an electric machine with in each case a clutch, and at least one electric machine. In order to start the internal combustion engine, pulse energy is provided from an inertia of the clutch associated with the free partial transmission and/or a rotation in the free partial transmission.

A switchable powertrain comprises at least four points of freedom. The switchable powertrain comprises a main gear set configured for gear ratio selection, the main gear set comprising main gears coupled to a main shaft and second gears coupled to a second shaft. An adapter comprises a first selective coupling configured to selectively couple to the main shaft, and a second selective coupling configured to selectively couple to the second shaft. A first torque source and a clutch are configured for selectively coupling or decoupling first torque to the main shaft. A second torque source is configured for selectively outputting second torque to the first selective coupling or to the second selective coupling.

An embodiment hybrid powertrain for a vehicle includes a first input shaft configured to be interlocked with an engine, a second input shaft configured to be interlocked with a first motor and to be parallel to the first input shaft, a third input shaft configured to be interlocked with a second motor and to be parallel to the second input shaft, an output shaft mounted parallel to the third input shaft, a first selective mesh device configured to transmit power from the second input shaft to the output shaft at multiple different gear ratios, a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios, and a third selective mesh device configured to transmit the power from the first input shaft to the second input shaft or the third input shaft.

To provide a drive system for a hybrid vehicle capable of suppressing energy loss by slip control at a start of an internal combustion engine during electric vehicle (EV) travel, a power transmission system for the hybrid vehicle is configured to couple an internal combustion engine, an electric motor, and a transmission by planetary gear mechanisms, has a brake that engages and disengages the internal combustion engine with and from a case, engages the brake during EV travel in which only the electric motor is used as a drive source, and is configured to start the internal combustion engine by disengaging the brake at the time of switching from the EV travel to hybrid vehicle (HEV) travel in which the internal combustion engine and the electric motor are used as drive sources.

A powertrain includes an engine; a driveline including a gearbox having an input shaft connected to the engine, an output shaft to be connected to driving wheels of the vehicle and a countershaft for transmitting a rotation of the input shaft to the output shaft which can be coupled to the input shaft; an electric machine; a gear reduction mechanism having a free wheel and at least three separate and rotatable junction elements, the rotational speeds of the junction elements being interdependent but not having a fixed ratio relative to one another:a first junction element that is connected to the electric machine; a second junction element that is connectable to the free wheel; a third junction element that is connected to the countershaft. The torque ratio between the third junction element and the first junction element can be selected from at least two different ratios.

A hybridised drivetrain for a motor vehicle. A transmission assembly of the vehicle has at least one first planetary gear set. A first element of the first planetary gear set is a ring gear. A second element of the first planetary gear set can be connected to an electric machine of the vehicle with a clutch and can be secured against a housing. The second element is a sun gear. A third element of the first planetary gear set is connected to an output. The third element is a planet carrier. The ring gear can also be connected to the electric machine by means of a clutch. The clutch has an output disc carrier connected to the sun gear. The clutch has an output disc carrier connected to the ring gear. The input disc carrier and the output disc carrier can rotate relative to one another.

The disclosure relates to a torque transmission device between a first drive element and an output element, having a torque transmission unit; an input, which is rotatable about a rotation axis and can be coupled to the first drive element, and an output, which can be connected to the output element. A separating clutch is arranged outside of the torque transmission unit and the fluid chamber, and is designed for selective torque transmission between the first drive element and the torque transmission unit. The separating clutch has a clutch input and a clutch output that is selectively connectable via a clutch actuating device.

A hybrid sub-assembly for driving a vehicle includes at least one primary shaft, at least one secondary shaft, a transmission gearbox including at least one intermediate shaft different from the primary shaft and the secondary shaft, and an electromotive unit. The electromotive unit includes at least one reversible electric machine, and a coupling device that can take up at least one intermediate coupling position in which an output shaft of the reversible electric machine is kinematically connected to the intermediate shaft, and a secondary coupling position in which an output shaft of the reversible electric machine is kinematically connected to the secondary shaft without going via the intermediate shaft.