An internal combustion engine control unit is configured to, in a case where a traveling mode setting unit sets a first traveling mode, increase a rotational speed of an internal combustion engine in accordance with an increase in a speed of a vehicle, and when a rotational speed reaches a predetermined first rotational speed, decrease the rotational speed to a second rotational speed lower than the first rotational speed. In a case where the internal combustion engine control unit decreases the rotational speed of the internal combustion engine to the second rotational speed, the traveling mode setting unit forbids a transition to the second traveling mode for a predetermined period from when the rotational speed is decreased to the second rotational speed.

A hybrid powertrain may include an engine input shaft connected to an engine by a main clutch, a motor input shaft mounted coaxially with the engine input shaft and connected to a motor, a center synchronizer installed to interrupt connection between the engine input shaft and the motor input shaft, first and second output shafts mounted parallel to the engine input shaft, a variable driving gear provided on the motor input shaft to maintain or increase a rotation speed of the motor input shaft and then to transmit the maintained or increased rotation speed to the first output shaft, and plural external gear pairs installed to form different transmission gear ratios between the engine input shaft and the first output shaft and between the engine input shaft and the second output shaft.

A transmission device for a motor vehicle, having an input shaft, which is operatively connectable to a drive device of the motor vehicle, and a first output shaft and a second output shaft, and comprising a spur gear differential transmission which is designed as a planetary transmission, by means of which the input shaft is coupled to the first output shaft and the second output shaft. It is provided that the spur gear differential transmission comprises a first sun gear coupled to the first output shaft and a second sun gear coupled to the second output shaft, wherein the first sun gear meshes with a first planet gear which is rotatably mounted on a planet gear carrier coupled to the input shaft, which first planet gear also meshes with a second planet gear which is likewise rotatably mounted on the planet gear carrier and which meshes with the second sun gear.

An electrical machine comprising: at least one stator, at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, an integrated electrical differential coupled to at least one of the rotors, the at least one integrated electrical differential permitting the at least one rotor to output at least two rotational outputs to corresponding shafts, wherein the at least two rotational outputs are able to move the shafts at different rotational velocities to one another. The electrical machine is configured to fit into a housing, and that can be retrofitted into a conventional vehicle by replacing the mechanical differential.

A transverse vehicle drive assembly, wherein the transverse vehicle drive assembly comprises a first power source and an automatic transmission (10), a first intermediate shaft (31) is provided parallel to a first input shaft (21) of the automatic transmission (10), a second intermediate shaft (32) is provided coaxial with the first input shaft (21), a third intermediate shaft (33) is provided coaxial with the first intermediate shaft (31), a first clutch (41) is provided between the first intermediate shaft (31) and the third intermediate shaft (33), and a second clutch (42) is provided between the first input shaft (21) and the second intermediate shaft (32). A first gear (11) on the first input shaft (21) and a second gear (12) on the first intermediate shaft (31) are in engaged transmission; and a third gear (13) on the second intermediate shaft (32) and a fourth gear (14) on the third intermediate shaft (33) are in engaged transmission, and the fourth gear (14) on the third intermediate shaft (33) is simultaneously in engaged transmission with a fifth gear (15) on a differential (50). The drive assembly can realize transmission of two speed ratios, and the transmission modes are flexible. The longitudinal dimension and the lateral dimension of the drive assembly are reduced, to be adapted for vehicles of a compact structure. Because a small quantity of gears are used, the transmission structure is simplified.

A power transmission system includes: a power source; a speed change unit, where the speed change unit is selectively power-coupled to the power source; a first motor generator unit; a system power output portion; and a mode conversion device, where the mode conversion device includes: a conversion device input portion and a conversion device output portion, the conversion device input portion outputs power from at least one of the power source and the first motor generator unit, the conversion device output portion is connected to an input end of the system power output portion, and the conversion device input portion is selectively power-coupled to the conversion device output portion; and when the conversion device input portion is power-coupled to the conversion device output portion, the rotational speed of the conversion device input portion is greater than or equal to the rotational speed of the conversion device output portion.

The power transmission system includes: a power source; a first motor generator unit; a system power output portion; and a mode conversion device, where the mode conversion device includes: an input portion, a first conversion portion, a second conversion portion and an output portion, the output portion is connected to an input end of the system power output portion, the input portion is suitable for outputting power from at least one of the power source and the first motor generator unit, the input portion is selectively connected to one of the first conversion portion and the second conversion portion, and each of the first conversion portion and the second conversion portion cooperates with the output portion to perform transmission; and the input portion is connected to the second conversion portion, so that a rotational speed output by the input portion is reduced and then output to the input end of the system power output portion.

A hybrid drivetrain includes an output element, a combustion powertrain, an electrical powertrain, and a torque-transmitting, fixed-speed reduction gearing connected to the output element for reducing a speed of the internal combustion engine and the electric machine. The combustion powertrain has an internal combustion engine with a drive shaft for delivering a first torque, a generator with a generator shaft for converting the first torque into electrical energy, a variable transmission arranged to variably transmit the first torque, and a torque clutch for connecting and disconnecting transmission of the first torque between the internal combustion engine and the output element. The electrical powertrain has an electric machine with a rotor shaft for delivering a second torque. In an example embodiment, the torque-transmitting, fixed-speed reduction gearing has a direct combustion input stage for the combustion powertrain and a direct electrical input stage for the electrical powertrain.

A drive device for a vehicle axle, especially a rear axle, of a two-track vehicle, wherein the vehicle axle includes an axle differential, which can be connected at the input end to a primary drive machine and can be connected at the output end across flange shafts arranged on either side to vehicle wheels of the vehicle axle, wherein the vehicle axle is associated with an additional drive machine and a shiftable superimposing gear, which can be shifted to a torque distribution gear in which a drive torque is generated by the additional drive machine, a torque distribution on the two vehicle wheels can be changed depending on the magnitude and direction of rotation of the drive torque, and shifting can be done to a hybrid mode in which the drive torque generated by the additional drive machine can be coupled to both flange shafts of the vehicle wheels.

A multi-stage dual clutch transmission for a vehicle includes: a first input shaft selectively connectable to an engine through a first clutch and having odd driving gears fixed thereon; a second input shaft disposed coaxially with the first input shaft, selectively connectable to the engine through a second clutch, and having even driving gears fixed thereon; a first output shaft and a second output shaft disposed in parallel with the first and second input shafts and have odd and even driven gears being freely rotatable thereon in mesh with the odd and even driving gears, respectively; and a motor shaft disposed in parallel with the first and second output shafts, connected to a motor, having first and second delivery gears being freely rotatable thereon, and having first and second one-way clutches transmitting power to the first and second delivery gears, respectively, when rotating in a predetermined direction thereof.