A drivetrain system for a vehicle is described, and includes an internal combustion engine, a geartrain, an electric machine, a power take-off unit, and a driveline. The internal combustion engine is coupled to the geartrain via a disconnect clutch and a torque converter. The geartrain includes a transmission and a differential gearset, including an output member of the transmission coupled to an input member of the differential gearset. The input member of the differential gearset is coupled to a rotor of the electric machine and the power take-off unit. The differential gearset is coupled to first and second intermediate driveshaft members of the driveline to transfer propulsion power to vehicle wheels that are arranged in a front-wheel configuration.

Provided herein is an auxiliary hybrid system (AHS) that may be configured to provide electrical propulsion to an e.g., internal combustion-powered vehicle through the use of a battery and electric motor. Alternatively, the AHS may be configured to increase range to electric vehicles through the use of an internal combustion-powered generator. In either embodiment, the AHS is added to a vehicle without altering the operation of the vehicles' standard drivetrain, allowing the vehicle to operate conventionally when the AHS is not engaged. The AHS is compatible with a wide range of vehicles with a minimum of vehicle-specific parts.

A gearing device for a motor vehicle, which is equipped with an input shaft that can be operationally connected to a drive unit, as well as a first output shaft and a second output shaft, wherein the first output shaft is connected or can be connected via a first gear with a first partial shaft of a wheel axle and the second output shaft is operationally connected or can be operationally connected via a second gear with a second partial shaft of the wheel axle.

A transmission unit includes: input shafts, each of the input shafts being provided with a shift driving gear thereon; output shafts, each of the output shafts being provided with a shift driven gear configured to mesh with a corresponding shift driving gear; a generator gear disposed on one of the output shafts; a motor power shaft; a first motor power shaft gear disposed on the motor power shaft and configured to rotate together with the generator gear; a second motor power shaft gear disposed on the motor power shaft and configured to rotate together with a shift driven gear; a reverse idler gear; and a reverse output gear configured to rotate together with a shift driving gear via the reverse idler gear. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.

A transmission unit includes: input shafts; output shafts; an output unit fitted over one of the output shafts; output gears fixed on other output shafts; a generator gear fixed on one of the output shafts; an output unit synchronizer disposed on one of the output shafts and at least configured to engage with the output unit; a motor power shaft gear fixed on a motor power shaft and configured to rotate together with the generator gear. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.

A transmission unit includes: gear pairs; input shafts; output shafts performing power transmission with the input shafts via the gear pairs; a motor power output gear disposed on one of the output shafts; a motor power shaft; a first motor power shaft gear disposed on the motor power shaft and configured to rotate together with one shift driving gear; a second motor power shaft gear disposed on the motor power shaft and configure to rotate together with the motor power output gear; and an output idler gear fitted over the motor power shaft and configured to rotate together with the motor power shaft via a synchronizer. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.

A vehicle control system to be mounted in a hybrid electric vehicle includes an engine, a center differential that includes a front-wheel-side output portion and a rear-wheel-side output portion and distributes torque outputted from the engine to a front wheel and a rear wheel, a limited slip differential mechanism that limits a differential between the front-wheel-side output portion and the rear-wheel-side output portion, and a motor disposed in a drive-power transferring system that transfers drive power from the rear-wheel-side output portion to the rear wheel. The vehicle control system includes a processor. When the hybrid electric vehicle is switched from a first traveling mode to a second traveling mode, the processor stops the engine while causing the limited slip differential mechanism to limit the differential between the front-wheel-side output portion and the rear-wheel-side output portion.

A method for operating a vehicle drivetrain (1) having a drive machine (2), an output (3) and a gearbox (4) with the gearbox (4) arranged in power flow between the drive machine (2) and the output (3) includes opening, in the presence of a demand for activation of a sailing operating function of the vehicle drivetrain (1) and a simultaneously activated engine start-stop function, a positively engaging shift element (F) while the drive machine (2) is left both decoupled from the output (3) and shut down.

A hybrid vehicle drive device includes a power transmission mechanism including a transmission coupled to an engine output shaft, a clutch coupled to a transmission output shaft, a first gear coupled to a clutch output shaft, a final reduction gear that constantly meshes with the first gear, a drive shaft coupled to the final reduction gear, a first rotary element coupled to an electric motor, and a second rotary element that meshes with the final reduction gear and rotates in accordance with the rotation of the rotary element. The power transmission mechanism is disposed so that, when viewed from the rotational axis direction of each gear, a line that connects the rotational axis of the first rotary element and the rotational axis of the second rotary element is inclined to the first gear side in relation to the vertical direction of the vehicle when mounted to a vehicle.

A hybrid vehicle system includes: an engine that is capable of outputting a torque to be transmitted to a driving wheel; a first motor generator that is provided in a coupled manner to the engine and that is capable of outputting a torque to be transmitted to the driving wheel; a transmission that converts a torque output from one or both of the engine and the first motor generator at a predetermined transmission gear ratio; a transmission clutch that is capable of switching on and off power transmission between the first motor generator and the transmission; a second motor generator that is capable of outputting a torque to be transmitted to the driving wheel in a state where the transmission clutch is disengaged; and an oil pump that is coupled to a motor shaft of the first motor generator and that is driven by rotation of the motor shaft.