US 9,695,932 B2Granted

Power transmission apparatus for vehicle

AssigneeHyundai Motor Company

InventorsKyeonghun Lee, Jongsool Park, Suengho Lee

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Abstract

A power transmission apparatus may include a first input shaft adapted to selectively receive torque of an engine, a second input shaft disposed without rotational interference with the first input shaft, a third input shaft disposed in a row with the second input shaft and without rotational interference with the first input shaft, a planetary gear set including a first rotation element, a second rotation element directly connected to the third input shaft, and a third rotation element directly connected to the first input shaft, a motor/generator directly connected to the first rotation element and configured to achieve a reverse speed by inverse rotation thereof, and a first speed output unit and a second speed output unit each adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque.

Claims19

Dependent claims

A power transmission apparatus for a vehicle comprising:

a first input shaft adapted to selectively receive torque of an engine;
a second input shaft disposed without rotational interference with the first input shaft, adapted to selectively receive the torque of the engine, and having at least one input gear fixedly disposed thereon;
a third input shaft disposed in a row with the second input shaft and without rotational interference with the first input shaft, and having at least one input gear fixedly disposed thereon;
a planetary gear set including a first rotation element, a second rotation element directly connected to the third input shaft, and a third rotation element directly connected to the first input shaft;
a motor/generator directly connected to the first rotation element and operated as a motor or a generator;
a first speed output device adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque;
and
a second speed output device adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque,
wherein the at least one input gear fixedly disposed on the second input shaft includes a first input gear for achieving a fourth forward speed and a second input gear for achieving a second forward speed, and
wherein the at least one input gear fixedly disposed on the third input shaft includes a third input gear for achieving a first forward speed or a reverse speed and a fourth input gear for achieving a third forward speed.

7 more elements

A power transmission apparatus for a vehicle comprising:

a first input shaft adapted to selectively receive torque of an engine;
a second input shaft disposed without rotational interference with the first input shaft, adapted to selectively receive the torque of the engine, and having first and second input gears fixedly disposed thereon;
a third input shaft disposed in a row with the second input shaft and without rotational interference with the first input shaft, and having third and fourth input gears fixedly disposed thereon;
a planetary gear set including a first rotation element, a second rotation element directly connected to the third input shaft, and a third rotation element directly connected to the first input shaft;
a motor/generator directly connected to the first rotation element and operated as a motor or a generator;
a first clutch selectively connecting the engine to the first input shaft;
a second clutch selectively connecting the engine to the second input shaft;
a third clutch selectively connecting two rotation elements among three rotation elements of the planetary gear set and selectively locking-up the planetary gear set;
a first speed output device including:
a first output shaft disposed in parallel with the second and third input shafts;
a first output gear fixedly disposed on the first output shaft and outputting torque of the first output shaft;
a first/reverse speed gear rotatably disposed on the first output shaft and engaged with the third input gear;
a fourth speed gear rotatably disposed on the first output shaft and engaged with the first input gear;
and
a first synchronizer selectively connecting the first/reverse speed gear or the fourth speed gear to the first output shaft;
and
a second speed output device including:
a second output shaft disposed in parallel with the second and third input shafts;
a second output gear fixedly disposed on the second output shaft and outputting torque of the second output shaft;
a second speed gear rotatably disposed on the second output shaft and engaged with the second input gear;
a third speed gear rotatably disposed on the second output shaft and engaged with the fourth input gear;
a second synchronizer selectively connecting the second speed gear to the second output shaft and
a third synchronizer selectively connecting the third speed gear to the second output shaft.

20 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/543,322Filed 17 Nov 2014
Priority: KR 10-2013-015881318 Dec 2013
Published: US 2015/0167805 A118 Jun 2015
Granted: 4 Jul 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

F16H 61/0403
Smoothing ratio shift: synchronisation before shifting
B60K 6/365
Characterised by the transmission gearings: with the gears having orbital motion
B60K 6/48
Characterised by the architecture of the hybrid electric vehicle: parallel type
B60K 6/547
Transmission for changing ratio: the transmission being a stepped gearing