A hybrid drive assembly includes an internal combustion engine as a first drive machine having a first drive shaft, an electromechanical energy converter as a second drive machine having a second drive shaft, a switchable traction transmission device with a first transmission input shaft selectively connected to the first drive shaft, and a second transmission input shaft connected to the second drive shaft. The traction transmission device has an input planetary gear set having at least three transmission shafts, an input sun gear shaft, an input ring gear shaft, and an input planet carrier shaft. One of which is the first transmission input shaft, with a first torsional vibration reducing device arranged between it and the first drive shaft. Another of which is the second transmission input shaft, with a second torsional vibration reducing device arranged between it and the second drive shaft.

A counter gear mechanism includes: a fifth gear in mesh with a third gear; a sixth gear in mesh with a fourth gear; and a seventh gear in mesh with a differential input gear. The seventh gear is disposed between the fifth gear and the sixth gear in an axial direction. A switching mechanism is disposed between the third gear and the fourth gear in the axial direction. The switching mechanism makes switching among: a state in which the third gear is coupled to a second input member; a state in which the fourth gear is coupled to the second input member; and a state in which the third gear and the fourth gear are decoupled from the second input member. This structure is able to make an entirety of an apparatus compact in size in the axial direction when the apparatus includes the switching mechanism to change the speed ratio between the second input member, which is drivingly coupled to an internal combustion engine, and output members.

An engine start controller for a hybrid vehicle and a method thereof are provided. The engine start controller includes a hybrid starter generator (HSG) that is connected to an engine by a belt, a sensor that is configured to measure an HSG speed, and a processor that applies a starting torque to the HSG. When starting the engine, the processor calculates an HSG speed estimated based on the applied starting torque and calculates an amount of slip of the belt using the HSG speed. In addition, the processor calculates a torque change rate correction value based on the calculated amount of slip, and corrects a rate of change rate in the starting torque based on the torque change rate correction value.

A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of an automobile, a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft and a regeneration control of performing regeneration by at least one of distributing a braking force by the friction brake system and imparting a regenerative braking torque to rear wheels by causing the motor to perform a regeneration operation. The controller executes a first coordinated gear-shifting control of reducing hydraulic pressure in the friction brake system and, at the same time, changing the shift stage while continuing the regeneration operation during brake regeneration and executes a second coordinated gear-shifting control of changing the shift stage after increasing an input torque during non-brake regeneration.

A transmission module for a hybrid drive vehicle adapted to be interposed between an internal combustion engine and a vehicle transmission has a tray-like support structure defining a housing for a decoupling clutch and adapted to be fixed to the internal combustion engine. A module drive is carried by the support structure and has a first transmission member adapted to be connected to the decoupling clutch by means of a torsional vibration damper and has a second transmission member adapted to be connected to an electric machine. The torsional vibration damper has an actuator defining a centering with respect to the crankshaft and to a transmission torque converter and has a seat for a support bearing with respect to the support structure.

A hybrid transmission device (3) includes at least one drive device (EM2), a transmission (4) with a first transmission input shaft (12) and a second transmission input shaft (14) mounted on the first transmission input shaft (12). At least two gear-step gears (16, 18) are arranged on the second transmission input shaft (14), and the gear-step gear (16) of the highest gear step (G3) is arranged on the second transmission input shaft (14) in an axial direction toward an outer side (46, 50).

A hybrid transmission (20) for a motor vehicle drive train (12) with an internal combustion engine (14), a first electric prime mover (16), and a second electric prime mover (18), includes: a first transmission input shaft (24) for a first sub-transmission coaxially drivingly connectable to the internal combustion engine and/or drivingly connectable to the second electric prime mover in an axially parallel manner; a second transmission input shaft (26) for a second sub-transmission drivingly connectable to the first electric prime mover in an axially parallel manner; a countershaft (28); idler gears and fixed gears arranged in multiple gear set planes for forming gear steps; and multiple gear change devices including shift elements (A-E) for engaging the gear steps. All even gear steps are associated with one sub-transmission and all odd gear steps are associated with the other sub-transmission such that all electric-machine gear steps are power shiftable.

When the state of charge of a battery is greater than or equal to a lower limit value and less than or equal to an upper limit value, an electronic control unit calculates a charging electric energy transferred between a motor-generator and the battery such that the battery is neither charged nor discharged. When the state of charge is less than the lower limit value, a required torque of the engine is calculated based on the charging electric energy, a power consumption of an auxiliary device, and a driving torque. When the state of charge is greater than or equal to the lower limit value and less than or equal to the upper limit value, the required torque is calculated based on the charging electric energy and the driving torque, without taking the power consumption into consideration.

A hybrid vehicle includes: a crankcase having a main chamber formed in a case body and accommodating at least a crankshaft, an input shaft, an output shaft, and a gear train, the crankcase further having a subsidiary chamber formed between the case body and a cover and accommodating at least a main clutch; a rotary member disposed in the subsidiary chamber so as to be capable of power transmission to the input shaft; and a power transmission member that transmits drive power from a drive motor to the rotary member.

A control apparatus for a motive power transmission device equipped with a first input shaft, a second input shaft to which a motive power from a motor is input, a rear wheel-side output shaft from which a motive power is output to a first driving wheel, a front wheel-side output shaft from which a motive power is output to a second driving wheel, and a planetary gear device that has, as three rotating elements, a sun gear to which the second input shaft is coupled, a carrier to which the front wheel-side output shaft is coupled, and a ring gear to which the first input shaft and the rear wheel-side output shaft are coupled engages an engagement device when a torque of the rear wheel-side output shaft is equal to or smaller than a threshold with the motor outputting the motive power.