Abstract: A power train for a vehicle may include a differential case; a differential ring gear aligned to be concentric to the differential case, and provided in a relatively rotatable state therebetween; and a connection/disconnection mechanism provided to connect or disconnect the differential ring gear and the differential case in a state where power is transferred thereto.

Abstract: A vehicle parking apparatus may include a parking rod having a first end portion connected to a detent plate and a second end portion on which a cam is placed, the parking rod rectilinearly moving in accordance with rotation of the detent plate and causing the cam to rotate a sprag about a rotation shaft; and a ‘U’-shaped stopper extending from the second end portion of the parking rod and operating to surround or release the sprag in accordance with the motion of the parking rod, the stopper allowing rotation of the sprag by releasing the sprag when the detent plate is rotated to a P range position and preventing the rotation of the sprag by surrounding the sprag when the detent plate is rotated to a certain range position other than the P range position.

Abstract: A vehicle parking apparatus may include a parking rod having a first end portion connected to a detent plate and a second end portion on which a cam is placed, the parking rod rectilinearly moving in accordance with rotation of the detent plate and causing the cam to rotate a sprag about a rotation shaft; and a ‘U’-shaped stopper extending from the second end portion of the parking rod and operating to surround or release the sprag in accordance with the motion of the parking rod, the stopper allowing rotation of the sprag by releasing the sprag when the detent plate is rotated to a P range position and preventing the rotation of the sprag by surrounding the sprag when the detent plate is rotated to a certain range position other than the P range position.

Abstract: A power transmission system of a hybrid electric vehicle may include, a generating device adapted to generate electricity by torque of an engine or to start the engine. an input device adapted to receive the torque of the engine. a speed output device changing the torque transmitted from the input device into two speed steps and outputting the changed torque. an auxiliary power source disposed between the input device and the speed output device and adapted to supply torque to the speed output device or to generate electricity by the torque of the speed output device. a final reduction device outputting the torque transmitted from the speed output device.

Abstract: A power transmission system of a hybrid electric vehicle may include, a generating device adapted to generate electricity by torque of an engine or to start the engine. an input device adapted to receive the torque of the engine. a speed output device changing the torque transmitted from the input device into two speed steps and outputting the changed torque. an auxiliary power source disposed between the input device and the speed output device and adapted to supply torque to the speed output device or to generate electricity by the torque of the speed output device. a final reduction device outputting the torque transmitted from the speed output device.