A hybrid module for a drive train of a vehicle includes an intermediate shaft configured for torque transmission from an internal combustion engine and/or an electric machine to a transmission. The shaft is mounted on a dividing wall by two bearings, wherein a securing element is provided on a transmission side of the dividing wall to fix an axial position of a torque transmission component that can be mounted on the intermediate shaft on a motor/engine side of the dividing wall.

Methods and systems are provided for launching a vehicle in an electric-only mode of operation. In one example, a driveline operating method comprises engaging a parking pawl to an output shaft of a dual clutch transmission in response to a request to engine a vehicle into a parked state, and disengaging the parking pawl via rotating an engine via an integrated starter/generator in response to a request to propel the vehicle solely via power of an electric machine positioned downstream of the dual clutch transmission. In this way, the vehicle may be launched in the electric-only mode without activating the engine in a fueled mode of operation and then deactivating the engine, which may increase vehicle operator satisfaction and which may improve fuel economy.

A hybrid vehicle having a pendulum damper in which resonance at around an idling speed of an engine can be prevented to improve N.V. performance. The hybrid vehicle comprises an engine and at least one motor. In the hybrid vehicle, a power transmission path is formed between the engine and drive wheels. In the power transmission path, a pendulum damper is disposed to suppress torsional vibrations, and a disconnecting clutch is disposed to selectively interrupt power transmission between the engine and the pendulum damper.

A drive device is equipped with a countershaft, an engine, a first MG, a second MG, and a Ravigneaux-type planetary gear unit that includes a ring gear, a pinion, a carrier, a first sun gear, and a second sun gear. The pinion includes a first tooth portion that meshes with the ring gear and the first sun gear, and a second tooth portion that is provided at a position offset from the first tooth portion in an axial direction of the pinion and that meshes with the second sun gear. The drive device is further equipped with a first clutch that changes over a state of connection between the first sun gear and the engine, a second clutch that changes over a state of connection between the carrier and the engine, and a first brake that changes over a state of fixation of the second sun gear to a case.

An apparatus for determining a failure of an engine clutch is provided. The apparatus includes an engine clutch that is disposed between an engine generating power and a motor and a driving information detector that senses driving information including a shift speed stage, an engine speed, a motor speed, a SOC of a battery, and a vehicle speed. A controller then determines a driving mode of the engine from the detected driving information and determines whether oil leakage of the engine clutch is generated from the driving information and the driving mode.

A hybrid drivetrain for a hybrid-driven vehicle, having a transmission, which can be shifted by shifting elements into different transmission steps, and which is connectable via an internal combustion engine shaft to an internal combustion engine, via an electric machine shaft to an electric machine, and via an output shaft to at least one vehicle axis. The internal combustion engine shaft and a pinion shaft, which can be connected with respect to drive to the output shaft, are connectable via spur gearwheel sets, which can be shifted by means of shifting elements and which each form wheel levels, of which at least one hybrid wheel level is additionally connectable to the electric machine shaft.

A hybrid module for a motor vehicle for coupling an internal combustion engine includes a disconnect clutch, an electrical machine, a clutch, a dry space and a wet space, and a seal. The disconnect clutch is for transmitting a first torque from the internal combustion engine to the hybrid module, and disconnecting the hybrid module from the internal combustion engine. The electrical machine is for generating a drive torque and includes a rotor. The clutch is for transmitting a second torque from the electrical machine or the disconnect clutch to a drivetrain. The seal is for sealing off the dry space with respect to the wet space. A one of the disconnect clutch or the clutch is a dry clutch in the dry space and the other of the disconnect clutch or the clutch is a wet clutch in the wet space.

A multimode clutch may be adapted for selectively connecting and disconnecting front and/or rear axles from respective internal combustion engine and electric motor powertrains connected to such front and rear driving axles in a through-the-road hybrid vehicle. For example, the engine may be part of a front axle driven powertrain connected to the front wheels, while the motor may be part of a separate rear axle driven powertrain connected to the rear wheels, or vice versa. By selective disconnection of an axle not being actively driven, a real time reduction in parasitic losses may be achieved, leading to higher overall operating efficiencies. The multimode clutch offers greater flexibility over the use of standard friction clutches; each multimode clutch may provide four distinct operational modes for accommodating a wide diversity of driving conditions. For example, bi-rotational freewheeling of the rear axle may occur whenever the motor is not in use.

A vehicle driveline system for a vehicle, said system comprising a differential (100) having a differential housing (106) connectable to an engine via a pinion (103), and two output shafts (111, 112) being connectable with respective wheel axles, and an electrical motor (180) being selectively connected to the differential housing (106). Said differential housing (106) extends into a hollow shaft (113) and the differential housing (106) comprises an outer gearing (104) configured to mesh with the pinion (103) and an inner gearing (107) being connected with the output shafts (111, 112). The vehicle driveline system further comprises a first reduction gearing (160) connected to the hollow shaft (113) and an actuator arrangement (190) arranged between the differential housing (106) and the first reduction gearing (160). The actuator arrangement is configured to selectively transfer torque in any of the following modes: i) a first drive mode in which the actuator arrangement (190) is configured to be actuated to allow for torque transfer from the electrical motor (180) to the differential housing (106) only via the hollow shaft (113). ii) a second drive mode in which the actuator arrangement (190) is configured to be actuated to allow for torque transfer from the electrical motor (180) to the hollow shaft (113) via the first reduction gearing (160).

A transmission for a vehicle includes a first input shaft installed to receive power from an engine, a second input shaft concentrically disposed with the first input shaft and installed to receive power from a motor, an output shaft disposed in parallel with the first input shaft and the second input shaft, a first synchronizer provided at the first input shaft to selectively connect the first input shaft and the second input shaft, a first stage driving gear and a second stage driving gear provided at the second input shaft, a first stage driven gear and a second stage driven gear disposed at the output shaft to be freely rotated and meshed with the first stage driving gear and the second stage driving gear, respectively, to form a first stage shift ratio and a second stage shift ratio, and a second synchronizer installed to selectively connect any one of the first stage driven gear and the second stage driven gear with the output shaft.