Patent ID: 8500585
Filing Date: 2013-08-06
Classification: B60K,F16H,Y02T

Abstract:
1. A power transmission system of a hybrid electric vehicle, comprising: a first planetary gear set having a first sun gear, a first planet carrier, and a first ring gear as rotation elements thereof; a second planetary gear set having a second sun gear, a second planet carrier, and a second ring gear as rotation elements thereof; first and second motor/generators adapted to be operated as a motor or a generator; a torque delivery apparatus including first and second clutches and first and second brakes, wherein the first sun gear is directly connected to the second planet carrier, the first planet carrier is selectively connected to the second sun gear by interposing the first clutch therebetween and is directly connected to the first motor/generator, the first ring gear is connected to an input shaft and is selectively connected to the second motor/generator by interposing the second clutch therebetween, the second sun gear is selectively connected to a transmission housing through the first brake, the second planet carrier is connected to an output gear, and the second ring gear is directly connected to the second motor/generator and is selectively connected to the transmission housing through the second brake.