POWER TRANSMISSION APPARATUS FOR HYBRID ELECTRIC VEHICLE

摘要

A power transmission apparatus for a hybrid electric vehicle is disclosed. According to an embodiment of the present invention, the power transmission apparatus for a hybrid electric vehicle comprises: a first input shaft selectively connected to the output of an engine; a second input shaft as a hollow shaft to be arranged without rotation interference with the first input shaft, wherein the second input shaft is selectively connected to the output of the engine and one or more input gears are arranged on the outer circumference; a third input shaft as a hollow shaft to be arranged in the rear side of the second input shaft without rotation interference with the second input shaft, wherein one or more input gears are arranged on the outer circumference; a motor/generator to function as a motor and a generator; and a planetary gear set having first to third rotation factors, wherein each of the rotation factors is directly connected to one among the first and third input shafts and the motor/generator; two clutches to selectively connect the first or second input shaft to the output of the engine; a first transmission output mechanism to change the speed of the rotational power inputted from the second and third input shafts to output it; and a second transmission output mechanism to change the speed of the rotational power inputted from the second and third input shafts to output.