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US 2011/0300982 A1Published application
Transmission for hybrid electric vehicle
AssigneeHyundai Motor Company
InventorsJongsool Park, Changwook Lee
Life of this patent
Estimating the term…
Abstract
Provided is a transmission for a hybrid electric vehicle that makes it possible to more effectively transmit the torque from an engine to an output shaft, provide sufficient power performance in WOT start, achieve excellent controllability without generating transmission shock by allowing modes to be naturally and smoothly switched, and improve acceleration response.
Claims19
A transmission for a hybrid electric vehicle, comprising:
- an input element where a 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 to which the input element, the output element, and the first motor generator are connected;
- a second planetary gear set that is a multiple planetary gear set to which the output element and the second motor generator are connected and that includes at least four or more rotary elements;
- 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
- the second rotary element of the first planetary gear set and a fourth rotary element of the second planetary gear set are switched to be selectively connected by the second clutch.
8 more elements
A transmission for a hybrid electric vehicle, comprising:
- a first planetary gear set including three rotary elements connected with an input element, an output element, and a first motor generator, respectively;
- a second planetary gear set including at least four or more rotary elements having a rotary element connected to the output element, a rotary element having the same rotation speed as a rotation speed of a rotary element of the first planetary gear set which is connected to the input element, and rotary elements connected to the second motor generator;
- a second clutch connecting/disconnecting the rotary element of the second planetary gear set which has the same rotation speed as the rotation speed of the rotary element of the first planetary gear set which is connected to the input element, with/from the rotary element of the first planetary gear set which is connected to the input element;
- and
- a first clutch that switches a rotatable state of one rotary element that is not connected to the output element, the second motor generator, and the second clutch, in the at least four or more rotary elements of the second planetary gear set.
2 more elements
Dependencies are inferred from the claim text.