Patent ID: 9168823
Filing Date: 2015-10-27
Classification: B60K,Y02T,Y10S

Abstract:
1. A transmission system of a hybrid electric vehicle comprising: an input shaft connected to an engine; first and second motors/generators disposed on a transmission housing; a planetary gear set disposed on the input shaft and having three rotation elements, wherein a sun gear is connected to the transmission housing, a first rotation element is connected to the input shaft, and a second rotation element is connected to the first motor/generator and operated as an output element; a first output gear disposed on the input shaft and connected to the second motor/generator; a second output gear disposed on the input shaft; a first clutch selectively connecting the second output gear to the input shaft; and a second clutch selectively connecting the second output gear to the second rotation element of the planetary gear set, wherein the second clutch directly connects the second output gear to the second rotation element of the planetary gear set.