Patent ID: 8579750
Filing Date: 2013-11-12
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 that is a multiple planetary gear set where the input element, the output element, and the first motor generator are connected and that includes at least four or more rotary elements; a second planetary gear set where the output element and the second motor generator are connected; 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 third rotary element of the second planetary gear set is switched to be rotatable by the first clutch, and a fourth rotary element of the first planetary gear set and the second rotary element of the second planetary gear set are switched to be selectively connected by the second clutch.