| 摘要 |
<p>Disclosed is a transmission system of a hybrid electric vehicle. The transmission system according to an embodiment of the present invention comprises a first shaft connected to an output side of an engine; a first hollow shaft arranged on the outer circumferential side of the first shaft without rotation interference, including a first output gear formed on one end; a second hollow shaft arranged on the outer circumferential side of the first hollow shaft without rotation interference, and including a second output gear formed on one end; a second shaft arranged to be parallel to the first shaft, and selectively delivering rotation power from the first shaft to the first hollow shaft by being power connected to the first shaft and the first hollow shaft through an external gear unit; a clutch selectively connecting the second shaft to the first hollow shaft; a first motor/generator formed on a transmission housing and connected to the second hollow shaft; and a second motor/generator formed on the transmission housing, and connected to the second shaft, thereby realizing EV mode, continue mode, and parallel mode of direct connection operation.</p> |
