POWER TRANSMISSION APPARATUS OF HYBRID ELECTRIC VEHICLE
First Claim
Patent Images
1. A power transmission apparatus for a hybrid vehicle including power sources of an engine and a motor/generator, the power transmission apparatus comprising:
- an input unit including a first input shaft selectively connected with an the engine and the motor/generator, a second input shaft selectively connected with the motor/generator, a third input shaft fixedly disposed with at least one input gear, and a fourth input shaft selectively connected with the first input shaft and fixedly disposed with at least one input gear;
a torque converting unit including a planetary gear set having a first rotational element connected with the second input shaft, a second rotational element connected with the third input shaft, and a third rotational element connected with the first input shaft; and
a shifting output unit configured to shift torques received from the third and fourth input shafts and configured to output a shifted torque.
1 Assignment
0 Petitions
Accused Products
Abstract
A power transmission apparatus of a hybrid electric vehicle includes an input unit including four input shafts disposed with several input gears, torque converting unit including a planetary gear set having rotational elements connected with the input shafts, and a shifting output unit for shifting torques received from the input shafts and outputting the shifted torque.
11 Citations
17 Claims
-
1. A power transmission apparatus for a hybrid vehicle including power sources of an engine and a motor/generator, the power transmission apparatus comprising:
-
an input unit including a first input shaft selectively connected with an the engine and the motor/generator, a second input shaft selectively connected with the motor/generator, a third input shaft fixedly disposed with at least one input gear, and a fourth input shaft selectively connected with the first input shaft and fixedly disposed with at least one input gear; a torque converting unit including a planetary gear set having a first rotational element connected with the second input shaft, a second rotational element connected with the third input shaft, and a third rotational element connected with the first input shaft; and a shifting output unit configured to shift torques received from the third and fourth input shafts and configured to output a shifted torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A power transmission apparatus for a hybrid vehicle including power sources of an engine and a motor/generator, the power transmission apparatus comprising:
-
an input unit comprising; a first input shaft selectively connected with the engine and the motor/generator, a second input shaft formed as a hollow shaft, coaxially and rotatably disposed on the first input shaft, and selectively connected with the motor/generator, a third input shaft formed as a hollow shaft, coaxially and rotatably disposed on the second input shaft, and fixedly disposed with first and second input gears, and a fourth input shaft formed as a hollow shaft, disposed rearward to the second and third input shafts, coaxially and rotatably disposed on the first input shaft, selectively connected with the first input shaft, and fixedly disposed with third and fourth input gears; torque converting unit of a single pinion planetary gear set having a sun gear connected with the second input shaft, a ring gear connected with first input shaft, and a planet carrier connected with the third input shaft; and a shifting output unit configured to shift torques received from the third and fourth input shafts and to output a shifted torque. - View Dependent Claims (13, 14, 15, 16)
-
-
17. A power transmission apparatus of a hybrid electric vehicle including power sources of an engine and a motor/generator, the power transmission apparatus comprising:
-
an input unit including; a first input shaft selectively connected with the engine and the motor/generator, a second input shaft formed as a hollow shaft, coaxially and rotatably disposed on the first input shaft, and selectively connected with the motor/generator, a third input shaft formed as a hollow shaft, coaxially and rotatably disposed on the second input shaft, and fixedly disposed with first and second input gears, a fourth input shaft formed as a hollow shaft, disposed rearward to the second and third input shafts, coaxially and rotatably disposed on the first input shaft, selectively connected with the first input shaft, and fixedly disposed with a third input gear; torque converting unit of a single pinion planetary gear set having a sun gear connected with the second input shaft, a ring gear connected with first input shaft, and a planet carrier connected with the third input shaft; and a shifting output unit configured to shift torques received from the third and fourth input shafts and to output a shifted torque, wherein the shifting output unit comprises first and second shifting output devices, wherein the first shifting output device comprises; a first output shaft disposed in parallel with the first input shaft, forward first and third speed shifting gears rotatably disposed on the first output shaft, externally engaged with the first and second input gears, and selectively synchronized with the first output shaft by a first synchronizer, a forward second speed shifting gear rotatably disposed on the first output shaft, externally engaged with the third input gear, and selectively synchronized with the first output shaft by a second synchronizer, and a first output gear fixedly disposed at an upstream portion of the first output shaft, wherein a second shifting output device comprises; a second output shaft disposed in parallel with the first input shaft, a reverse speed shifting gear rotatably disposed on the second output shaft and selectively synchronized with the second output shaft by a third synchronizer, a reverse speed idle shaft disposed in parallel with the second output shaft, a reverse speed idle gear rotatably disposed on the reverse speed idle shaft and externally engaged with the first input gear and the reverse speed shifting gear, a forward second speed shifting gear rotatably disposed on the second output shaft, externally engaged with the third input gear, and selectively synchronized with the second output shaft by a fourth synchronizer, and a second output gear fixedly disposed at an upstream portion of the second output shaft.
-
Specification