A hybrid drive module is disclosed. An exemplary embodiment of the present invention provides a hybrid drive module that selectively transmits torque transmitted from an engine and a motor to a transmission including a housing disposed between the engine and the transmission, a drive shaft rotatably mounted inside the housing in a radial direction with its one end portion toward the engine based on an axial direction protruding from the housing and to which torque of the engine is inputted, a rotor hub provided within the housing and mounted with a rotor of the motor on its radially outer side, and in which a hub plate part integrally extending toward the drive shaft and rotatably connected to the other end portion of the drive shaft toward the transmission based on the axial direction is formed on its radially inner side, a rotor hub ridge, an inner circumferential surface of which is rotatably supported by the housing based on the radial direction and an external circumferential surface of which is fixed to the rotor hub based on the axial direction at the side of the engine, an engine clutch disposed at the engine side in the axial direction with the hub plate part interposed therebetween, and configured to directly connect the drive shaft and the rotor hub to selectively transmit the torque of the engine to the rotor hub, and a torque converter disposed at the side of the transmission in the axial direction with the hub plate part interposed therebetween to be connected to the rotor hub, and configured to multiply the torque of the engine, torque of the motor, or the torque of the engine and the motor when a vehicle is initially driven, or to transmit it to the transmission in a ratio of 1:1, wherein at least one fluid groove for supplying an operating fluid to the rotor to cool the rotor between the rotor hub and the engine clutch is formed on a surface of the hub plate part toward the engine clutch based on the axial direction.

A hybrid vehicle control apparatus including a torque converter temperature detector detecting a torque converter temperature, a rotor temperature detector detecting a rotor temperature, a stator temperature detector detecting a stator temperature, and an electronic control unit including a microprocessor. The microprocessor is configured to perform controlling an engine, a transmission, a lockup clutch, a motor-generator and a stator cooling device based on the torque converter temperature detected by the torque converter temperature detector, the rotor temperature detected by the rotor temperature detector and the stator temperature detected by the stator temperature detector so that the torque converter temperature is equal to or lower than a first predetermined temperature, the rotor temperature is equal to or lower than a second predetermined temperature and the stator temperature is equal to or lower than a third predetermined temperature.

A transfer for a four wheel drive vehicle includes first and second distribution mechanisms that respectively include first and second clutches configured to be controlled to a half-engaged state. The first and second distribution mechanisms distribute a portion of power outputted from a power source to a second transmission mechanism respectively through the first and second clutches. A first difference is different from a second difference. The first difference is a difference between a gear ratio from an input shaft of the first clutch to a first driving wheel and a gear ratio from an output shaft of the first clutch to a second driving wheel. The second difference is a difference between a gear ratio from an input shaft of the second clutch to the first driving wheel and a gear ratio from an output shaft of the second clutch to the second driving wheel.

A transfer for a four wheel drive vehicle includes first and second distribution mechanisms. The first distribution mechanism includes a first clutch and is configured to distribute a portion of power from a power source to a second transmission mechanism through the first clutch. The second distribution mechanism includes a planetary gear set and a second clutch, and is configured to distribute a portion of power from the power source to a second transmission mechanism through the planetary gear set and the second clutch in order. The first and second clutches are configured to be controlled to a half-engaged state between engagement and disengagement. An input shaft of the first distribution mechanism and an input shaft of the planetary gear set are unitized.

A hybrid drive train for a motor vehicle including: a drive unit having an internal combustion engine, an electric machine and a separating clutch operatively arranged between these components; a transmission; and a hydrodynamic torque converter arranged between the transmission and the drive unit. In order to advantageously further develop a hybrid drive train of this type, at least one torsional vibration absorber is arranged between the internal combustion engine and a converter housing of the torque converter.

A P1 hybrid module for a vehicle includes a housing, a motor stator, an input shaft, a resolver rotor, an output flange, a motor rotor, a housing plate, and a resolver stator. The housing is arranged for fixing to an engine and a multi-speed transmission. The motor stator is fixed to the housing. The input shaft is arranged for driving connection to a flange of a damper. The resolver rotor is fixed to the input shaft. The output flange is arranged for fixing to a torque converter. The motor rotor is rotatably fixed to the output flange. The housing plate is fixed to the housing by a first fastener. The resolver stator is fixed to the housing plate radially outside of the resolver rotor.

A drive unit is disclosed. The drive unit includes a first drive source, a first torque converter, a second drive source, a second torque converter, and a transmission. A torque is inputted from the first drive source to the first torque converter. The first torque converter includes a first turbine. A torque is inputted from the second drive source to the second torque converter. The second torque converter includes a second turbine. The second turbine is coupled to the first turbine. The transmission is disposed between a drive wheel and both the first and second torque converters.

An all-wheel drive system includes a center differential, a limited-slip differential clutch, a front-wheel torque transmission system, a rear-wheel torque transmission system, and a controller. The center differential distributes torque between front and rear wheels of a vehicle. The limited-slip differential clutch limits a differential operation of the center differential in accordance with an engaging pressure, and changes a front-rear torque distribution ratio between the front and rear wheels. The front-wheel torque transmission system transmits torque between the center differential and the front wheels. The rear-wheel torque transmission system transmits torque between the center differential and the rear wheels. The controller adjusts the engaging pressure based on a driving state of the vehicle. Reduction ratios of the front-wheel and rear-wheel torque transmission systems are set different from each other. The center differential is configured such that the front-rear torque distribution ratio is initially unequal and is changeable.

A transfer for a four wheel drive vehicle includes first and second distribution mechanisms that respectively include first and second clutches configured to be controlled to a half-engaged state. The first and second distribution mechanisms distribute a portion of power outputted from a power source to a second transmission mechanism respectively through the first and second clutches. A first difference is different from a second difference. The first difference is a difference between a gear ratio from an input shaft of the first clutch to a first driving wheel and a gear ratio from an output shaft of the first clutch to a second driving wheel. The second difference is a difference between a gear ratio from an input shaft of the second clutch to the first driving wheel and a gear ratio from an output shaft of the second clutch to the second driving wheel.

A vehicle includes an engine, and a transmission including a torque converter having an impeller. The vehicle further includes an electric machine configured to provide drive torque to the impeller. The impeller is selectively coupled to the engine via a clutch. At least one vehicle controller is configured to, in response to the engine being OFF, the transmission being in DRIVE, a vehicle speed being zero and a brake pedal being released beyond a threshold position, command the electric machine to provide a torque to the impeller. The torque is a predetermined feedforward torque adjusted by a feedback torque that is based on a difference between measured and calculated speeds. The speeds may be the speeds of the electric machine.