POWER TRANSMISSION APPARATUS FOR HYBRID ELECTRIC VEHICLE

摘要

A power transmission apparatus for hybrid electric vehicle is disclosed. According to an embodiment of the present invention, the power transmission apparatus for a vehicle comprises: a first input shaft which is selectively connected to the output side of an engine; a second input shaft which is a hollow shaft disposed without rotational interference with the first input shaft and has at least one input gear on the circumferential surface; a third input shaft which is a hollow shaft disposed without rotational interference with the first input shaft at the rear side of the second input shaft and has at least one input gear on the circumferential surface; a fourth input shaft which is a hollow shaft disposed without rotational interference with the first input shaft at the rear side of the third input shaft; a planetary gear set which has first, second and third rotary elements wherein each rotary element is directly connected to any one of the first, the third and the fourth input shafts; a first clutch which selectively connects an output side of the engine to the first input shaft; a second clutch which selectively connects the output side of the engine and the second input shaft; a motor/generator which is connected to the fourth input shaft to execute functions of a motor and a generator; a first transmission output apparatus which outputs by transmitting rotary power inputted from the second and the third input shafts; and a second transmission output apparatus which outputs by transmitting rotary power inputted from the second and the third input shafts.