POWER TRANSMISSION SYSTEM OF HYBRID ELECTRIC VEHICLE

摘要

A power transfer apparatus for a hybrid electric vehicle is disclosed. The power transfer apparatus for a hybrid electric vehicle according to an embodiment of the present invention comprises: a first input shaft connected to an output side of an engine; a second input shaft disposed on the axial line of the first input shaft, selectively connected to the first input shaft by a clutch, and provided with a plurality of input gears; a first motor/generator disposed on the first input shaft to receive the rotational power of the engine by the plurality of gears on the first input shaft and a plurality of gears on an idle shaft disposed in parallel with the first input shaft to generate power; an output shaft disposed in parallel with the second input shaft and provided with a plurality of transmission gears externally engaged with the plurality of input gears on the second input shaft and disposed to rotate without interference and an output gear formed in one piece and disposed on one side thereof; a synchronization unit disposed on the output shaft to selectively connect the plurality of transmission gears to the output shaft; a second motor/generator disposed on the second input shaft and connected to a motor driving gear on the second input shaft externally engaged with a motor driven gear on the output shaft to generate electric rotational power; and a final deceleration means to finally reduce rotational power received from the output gear on the output shaft to output reduced rotational power.