Patent ID: 8672789
Filing Date: 2014-03-18
Classification: B60K,F16H,Y02T

Abstract:
1. A transmission for a hybrid electric vehicle, comprising: an input element where rotation power is inputted and an output element from which the rotation power is outputted; a first motor generator and a second motor generator; a first planetary gear set where the input element, the output element, and the first motor generator are connected; a second planetary gear set where the output element and the second motor generator are connected; a third planetary gear set; and a first clutch and a second clutch, wherein a first rotary element of the first planetary gear set and a first rotary element of the second planetary gear set are kept connected with the output element, a second rotary element and a third rotary element of the first planetary gear set are connected with the input element and the first motor generator, respectively, a second rotary element of the second planetary gear set is connected with the second motor generator, a first rotary element of the third planetary gear set is kept connected with one rotary element other than the first rotary element of the first planetary gear set and a second rotary element of the third planetary gear set is kept connected with one rotary element other than the first rotary element of the second planetary gear set, the first clutch is disposed to switch a rotatable state of a third rotary element of the second planetary gear set, the second clutch is disposed to selectively connect a third rotary element of the third planetary gear set to at least one or more rotary elements in the rotary elements that are not kept connected with the third planetary gear set in the rotary elements of the first planetary gear set and the second planetary gear set.