KR101575321B1 - Power transmission apparatus for hybrid electric vehicle - Google Patents

Abstract

A vehicular transmission is disclosed. According to an embodiment of the present invention, a vehicular transmission includes a first input shaft selectively connected to an output side of an engine, A second input shaft disposed on the hollow shaft so as not to interfere with the first input shaft and selectively connected to the first input shaft, and having one or more input gears disposed on an outer circumferential surface thereof; A third input shaft disposed on the rear side of the second input shaft as a hollow shaft without rotational interference with the first input shaft and selectively connected to the first input shaft and having at least one input gear disposed on the outer circumferential surface thereof; A motor / generator that performs motor and generator functions; A planetary gear set having first, second and third rotating elements, each of which is connected directly to any one of the first, third, and motor / generators; A first clutch selectively connecting the output side of the engine and the first input shaft; A second clutch selectively connecting the second input shaft or the third input shaft to the first input shaft; A first shift output mechanism for shifting and outputting rotational power input from the second and third input shafts; And a second shift output mechanism for shifting and outputting rotational power input from the second and third input shafts.

Description

TECHNICAL FIELD [0001] The present invention relates to a shift device for a vehicle,

More particularly, the present invention relates to an automatic transmission (AMT) structure in which a motor / generator and a planetary gear set are added to realize smooth oscillation and quick shifting, and a regenerative braking and an oscillating charge are implemented, The present invention relates to a vehicular transmission.

Eco-friendly technology in vehicles is a core technology with survival of the future automobile industry, and car makers are concentrating on developing environment-friendly vehicles to achieve environmental and fuel efficiency regulations.

The future type of automobile technology can be exemplified by Electric Vehicle (EV), Hybrid Electric Vehicle (HEV), Double Clutch Transmission (DCT) and the like, which are improved in efficiency and convenience .

In addition, automobile makers are expected to improve the efficiency of the power transmission system in order to satisfy exhaust gas regulations of the respective countries and to improve the fuel efficiency performance by using an ISG (Idle Stop And Go) device and a regenerative braking device We are trying to put the technology into practical use.

The ISG device is a technology for starting the engine when the vehicle is stopped and stopping the vehicle while the vehicle is stopped. The regenerative braking device drives the generator using kinetic energy of the vehicle instead of braking by the existing friction during deceleration braking of the vehicle And the electric energy generated at this time is stored in a battery and reused.

The hybrid electric vehicle to which the transmission of the present invention can be applied is an automobile using two or more energy sources and can be combined in various ways. Generally, a hybrid electric vehicle using a gasoline engine or a diesel engine And a motor / generator driven by electric energy are hybridized.

In addition, DCT (double clutch transmission) is one example of a transmission that can be applied to the hybrid electric vehicle, and DCT can improve efficiency and convenience by applying two clutches to the manual transmission structure .

That is, the DCT is a transmission in which two clutches are applied to alternately operate the hole means and the even means. As described above, the mechanism that alternately operates the shifting of the hole means and the even means is a conventional MT (manual transmission) (Automatic manual transmission) can improve the torque cut-off feeling in the shifting process.

However, in the DCT, when the clutch is slipped, the DCT is disadvantageous in terms of the clutch disconnection and the energy loss due to the clutch slip, and the back slip due to the clutch slip occurs excessively during the back plate oscillation. And therefore, there is a problem in that the shift shock is larger than the automatic transmission.

Embodiments of the present invention provide a vehicle transmission capable of improving the fuel economy by realizing smooth oscillation and quick shifting by adding a motor / generator and a planetary gear set to an automatic manual transmission (AMT) structure, realizing regenerative braking and oscillation charging, ≪ / RTI >

In one or more embodiments of the present invention, a first input shaft selectively connected to an output side of the engine; A second input shaft disposed on the hollow shaft so as not to interfere with the first input shaft and selectively connected to the first input shaft, and having one or more input gears disposed on an outer circumferential surface thereof; A third input shaft disposed on the rear side of the second input shaft as a hollow shaft without rotational interference with the first input shaft and selectively connected to the first input shaft and having at least one input gear disposed on the outer circumferential surface thereof; A motor / generator that performs motor and generator functions; A planetary gear set having first, second and third rotating elements, each of which is connected directly to any one of the first, third, and motor / generators; A first clutch selectively connecting the output side of the engine and the first input shaft; A second clutch selectively connecting the second input shaft or the third input shaft to the first input shaft; A first shift output mechanism for shifting and outputting rotational power input from the second and third input shafts; And a second speed change output mechanism for shifting and outputting rotational power input from the second and third input shafts.

Further, the second input shaft may be provided with an input gear associated with an even-numbered gear stage, and the third input shaft may be arranged with an input gear associated with an odd-numbered gear stage including a reverse.

The input gear on the second input shaft is arranged in order from the front side to the rear side, and the input gear on the third input shaft is arranged in the order of the first input gear for realizing the fourth speed and the second input gear for realizing the second speed, A third input gear for implementing the first gear and the reverse gear, and a fourth input gear for implementing the third gear may be sequentially arranged from the front side to the rear side.

The second clutch may be a synchronizer and may be disposed between the second input shaft and the third input shaft.

Further, the planetary gear set is a double pinion planetary gear set, in which the sun gear, which is the first rotary element, is directly connected to the motor / generator, the ring gear, which is the second rotary element, is directly connected to the third input shaft, The planetary carrier can be directly connected to the first input shaft.

The motor / generator may include a rotor connected to the first rotary element of the planetary gear set, and a stator disposed on the outer circumferential side of the rotor and fixed to the transmission housing.

The first shift output mechanism includes a first output shaft disposed in parallel with the second and third input shafts, a first output gear fixedly disposed at one end of the first output shaft and outputting rotational power of the first output shaft, And a first synchronizer disposed on the first output shaft.

The first synchronizer may include first and second speed-change gears that are externally connected to the third input gear, a fourth speed-change gear that is connected to the first input gear and the external gear, have.

The second shift output mechanism includes a second output shaft disposed in parallel with the second and third input shafts, a second output gear fixedly connected to one end of the second output shaft and outputting rotational power of the second output shaft, And second and third synchronizers disposed on the second output shaft.

In addition, the second synchronizer may selectively connect the second input gear and the second speed change gear connected to the external gear to the second output shaft.

In addition, the third synchronizer may selectively synchronously connect a third speed gear connected to the fourth input gear and the external gear to the second output shaft.

The embodiment of the present invention realizes the fourth speed forward gear stage by the rotational power of the engine and realizes the second speed forward mode of the HEV mode by the rotational power of the engine and the motor / It is possible to realize the EV mode forward second speed range and improve the fuel efficiency.

In addition, since the engine and the motor / generator connected to the respective rotation elements of the planetary gear set can smoothly oscillate the friction member without slip, and the motor can be oscillated with only the motor / generator in the state in which the engine is shut off, Lt; / RTI >

Further, since the slip of the friction member does not occur at the time of oscillation, the durability of the friction member is improved, so that the energy loss can be minimized and the fuel consumption can be improved.

In addition, since the shifting control by the motor / generator can be performed instead of the shifting by the slip of the friction member, smooth shifting may be possible.

Further, when traveling is performed by the rotational power of the engine, the rotational power of the motor / generator can be used as an auxiliary power, so that acceleration performance can be improved.

Further, since the reverse speed change stage can be realized by driving the motor / generator in the reverse direction, a separate reverse speed transmission mechanism is not required for the first and second speed change output mechanisms, thereby reducing the total length of the transmission, .

1 is a schematic diagram of a transmission according to an embodiment of the present invention.
2 is a shift operation table of the transmission according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In order to clearly illustrate the embodiments of the present invention, parts that are not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the entire specification.

In the following description, the names of the components are denoted by the first, second, etc. in order to distinguish them from each other because the names of the components are the same and are not necessarily limited to the order.

1 is a schematic diagram of a transmission according to an embodiment of the present invention.

Referring to FIG. 1, a transmission according to an embodiment of the present invention includes first, second, and third input shafts IS1, IS2, IS3, a planetary gear set PG, a motor / generator MG, 1, the second clutch CL1, CL2, and the first and second speed change output mechanisms OUT1, OUT2.

The first input shaft IS1 is selectively connected to the output side of the engine ENG.

The second input shaft IS2 is a hollow shaft and is disposed on the outer circumference side of the first half of the first input shaft IS1 without rotation intervention and is selectively connected to the first input shaft IS1.

The first and second input gears G1 and G2 are disposed on the outer circumferential side of the second input shaft IS2 in order from the front side.

The third input shaft IS3 is a hollow shaft and is disposed on the rear side of the second input shaft IS1 on the rear half of the second input shaft without rotational interference and selectively connected to the first input shaft IS1.

At this time, the third and fourth input gears G3 and G4 are arranged on the outer peripheral side of the third input shaft IS3 in order from the front side.

The first input gear G1 is an input gear for each shift stage and the first input gear G1 is an input gear for implementing the fourth gear. The first, second, third, and fourth input gears G1, G2, G3, The second input gear G2 is an input gear for implementing the second speed and the third input gear G3 is an input gear for implementing the reverse and first gear and the fourth input gear G4 Is set to the number of gear teeth so as to respectively act as an input gear for implementing the third gear.

The second input shaft IS2 is provided with input gears for implementing an even speed change stage and the third input shaft IS3 is formed with input gears for implementing a reverse and odd speed change stage.

The planetary gear set PG is disposed on the rear side of the third input shaft IS3 and has first, second, and third rotary elements.

The first rotary element is directly connected to the motor / generator MG, the second rotary element is directly connected to the third input shaft IS3, and the third rotary element is connected to the first input shaft IS1 Directly connected.

That is, the planetary gear set PG is a double pinion planetary gear set in which the first rotating element is made up of the sun gear S, the second rotating element is made up of the ring gear R, And a planetary carrier (PC).

The motor / generator MG is capable of performing a motor and a generator function, and is disposed on the rear outer side of the planetary gear set PG.

That is, the motor / generator MG is composed of a stator ST fixed to the transmission housing and a rotor RT rotatably supported in the radial direction of the stator ST, And is directly connected to the sun gear S which is the first rotation element of the planetary gear set PG through the fourth input shaft IS4.

Accordingly, the motor / generator MG can function as a motor for charging the battery with electrical energy generated by the rotational power of the engine ENG while generating a generator function, or generating a driving force for running the vehicle .

The first clutch CL1 is disposed between the output side of the engine ENG and the first input shaft IS1 and interrupts the power. The first clutch CL1 may be a conventional fluid multiple-plate clutch, Operation and non-operation control.

The second clutch CL2 is a conventional synchronizer and selectively connects the second input shaft IS2 to the first input shaft IS1 or connects the third input shaft IS3 to the first input shaft IS1, IS1 to perform variable direct connection of the planetary gear set PG.

Since the synchronizer for forming the second clutch CL2 is a well-known structure, a detailed description thereof will be omitted. The sleeve SLE applied to the synchronizer may include a separate actuator , The actuator can be controlled by the transmission control unit.

The synchronizer is represented by the second clutch CL2 in the above description because the function of the synchronizer selectively connects the rotating body and the rotating body in the same manner as the clutch is used for the convenience of explanation.

Therefore, the second clutch CL2 is not necessarily limited to a synchronizer, and a dog clutch or a hydraulic multi-plate clutch that can be automatically controlled can be applied.

The first speed change output mechanism OUT1 includes a first output shaft OS1 disposed in parallel with the second and third input shafts IS2 and IS3 at a predetermined interval and a second output shaft OS1 disposed between the first and second speed change gears D1 / R and a fourth synchronizer SL1 including a fourth speed change gear D4.

The first and the second speed change gears D1 / R forming the first synchronizer SL1 are connected to the third input gear G3 and the external gear. The fourth speed change gear D4 is connected to the first input gear G1, (G1) and the external gear.

Accordingly, the first synchronizer SL1 selectively connects the first and second speed change gears D1 / R and the fourth speed change gear D4 to the first output shaft OS1.

The rotational power transmitted through the first shift output mechanism OUT1 is transmitted to the first output gear OG1 mounted on the front end or the rear end of the first output shaft OS1 and the longitudinally driven reduction gear FG ) To the differential mechanism (DIFF).

The second speed change output mechanism OUT2 includes a second output shaft OS2 disposed in parallel with the second and third input shafts IS2 and IS3 at a predetermined interval and a second speed change gear mechanism D2 And a third synchronizer SL3 including a third speed change gear mechanism D3.

The second synchronizer SL2 is disposed on the front side of the second output shaft OS2 and the third synchronizer SL3 is disposed on the rear side of the second output shaft OS2.

The second speed change gear mechanism D2 forming the second synchronizer SL2 is connected to the second input gear G2 and the external gear.

Accordingly, the second synchronizer SL2 selectively connects the second speed change gear mechanism D2 with the second output shaft OS2.

The third speed change gear mechanism D3 forming the third synchronizer SL3 is connected to the fourth input gear G4 and the external gear.

Accordingly, the third synchronizer SL3 selectively connects the third speed change gear mechanism D3 with the second output shaft OS2.

The rotational power shifted through the second speed change output mechanism OUT2 is transmitted to the second output gear OG2 mounted on the front end or the rear end of the second output shaft IS2 and the longitudinal reduction gear FD connected to the external gear, To the differential mechanism (DIFF).

The second and third synchronizers SL2 and SL3 are disposed so that the second and third sleeves SLE2 and SLE3 can face each other.

Since the first, second and third synchronizers SL1 to SL3 are well known in the art, a detailed description thereof will be omitted. In the first, second and third synchronizers SL1 to SL3, The second and third sleeves SLE1, SLE2, and SLE3 may include separate actuators not shown in the drawings, and the actuators may be shifted while being controlled by the transmission control unit .

FIG. 2 is a shift operation table of the transmission according to the embodiment of the present invention.

[Neutral charge]

In the case where the neutral charging is performed in the state that the engine is started, the first speed change gear mechanism D1 and the first output shaft IS1 are synchronously connected through the first sleeve SLE1 of the first synchronizer SL1 , And controls the first clutch CL1.

Then, in the planetary gear set PG, the input is made to the planetary carrier PC via the first input shaft IS1, and the ring gear R is operated as the fixed element by the third input shaft IS3, Charging is performed by driving the motor / generator MG to the generator by generating electric energy while the sun gear S rotates at a high speed.

[Advancing first gen]

The first synchronizer SL1 is operated by the rotational power of the engine ENG in the first forward speed and the first sleeve SLE1 of the first synchronizer SL1 is operated to control the first speed change gear D1 and the first output shaft IS1, When the first clutch CL1 is operated after the first input shaft IS1 and the third input shaft IS3 are connected through the sleeve SLE of the second clutch CL2, .

Thus, the rotational power of the engine ENG is transmitted to the first clutch CL1, the first input shaft IS1, the second clutch CL2, the third input shaft IS3, the third input gear G3, The forward first speed gear FG is transmitted to the forward speed reduction gear FG via the first output shaft OS1 and the first output gear OG1.

After the first forward speed change is completed, the second speed change gear D2 and the second output speed OS2 are transmitted through the sleeve SLE2 of the second synchronizer SL2 for the next forward second speed change, Can be synchronously connected.

[Advancing second gen]

When the vehicle speed is increased to shift to the second forward speed in the first speed state, the first clutch CL2 is operated to control the sleeve (SLE) of the first clutch CL2 to engage the first input shaft IS1, And the third input shaft IS3, and controls the first input shaft IS1 and the second input shaft IS2 to be connected.

In a state where the second speed change gear D2 and the second output shaft OS2 are synchronously connected through the second sleeve SLE2 of the second synchronizer SL2 in the preliminary operation in the forward first speed state, The rotational power of the engine ENG is naturally transmitted through the first clutch CL1, the first input shaft IS1, the second clutch CL2, the second input shaft IS2, the second input gear G2, The second output shaft OS2 and the second output gear OG2 to the longitudinal reduction gear FG to perform forward second speed running.

After completion of the second forward speed shift as described above, the first sleeve SLE1 of the first synchronizer SL1 is controlled to be in the neutral state, and the second sleeve SLE1 of the third synchronizer SL3 The third sleeve SLE3 may be preliminarily operated to synchronize the third speed change gear D3 and the second output shaft IS2.

[Three steps forward]

In the second speed state, when the vehicle speed is to be increased to the third speed, the sleeve (SLE) of the second clutch (CL2) is controlled to operate in the second speed state and the first input shaft IS1 The connection state of the second input shaft IS2 is released, and the first input shaft IS1 and the third input shaft IS3 are connected to each other.

Then, the third speed change gear mechanism D3 and the second output shaft OS2 are synchronously connected through the third sleeve SLE3 of the third synchronizer SL3 in the preliminary operation in the forward second speed state, The rotational power of the engine ENG is naturally transmitted through the first clutch CL1, the first input shaft IS1, the second clutch CL2, the third input shaft IS3, the fourth input gear G4, The third forward speed travel is carried out while being transmitted to the longitudinal reduction gear FG through the second output shaft D3, the second output shaft OS2 and the second output gear OG2.

After completion of the third forward speed shift as described above, the second sleeve SLE2 of the second synchronizer SL2 is controlled to be in a neutral state, and the second sleeve SLE2 of the first synchronizer SL1 The first sleeve SLE1 may be previously operated and controlled so that the fourth speed change gear D4 and the first output shaft IS1 are synchronously connected.

[Advance 4th gen]

In the third speed state, when the vehicle speed is to be increased and the shift to the fourth forward speed is to be made, the sleeve SLE of the second clutch CL2 is operated under the third speed to operate the first input shaft IS1, And the third input shaft IS3, and controls the first input shaft IS1 and the second input shaft IS2 to be connected.

In a state where the fourth speed change gear D4 and the first output shaft OS1 are synchronously connected through the first sleeve SLE1 of the first synchronizer SL1 in the preliminary operation in the forward third speed state, The rotational power of the engine ENG is naturally transmitted through the first clutch CL1, the first input shaft IS1, the second clutch CL2, the second input shaft IS2, the first input gear G1, Speed forward gear FG via the first output shaft D4, the first output shaft OS1, and the first output gear OG1.

After the fourth forward speed shift is completed as described above, the third sleeve SLE3 of the third synchronizer SL3 is controlled to be in a neutral state.

[EV backward]

The first output shaft IS1 and the first and second speed change gears D1 / R are controlled by operating the first sleeve SEL1 of the first synchronizer SL1 while the engine is stopped, And then controls the second clutch CL2 to control the first input shaft IS1 and the third input shaft IS3 to be connected to each other.

This reverse speed change stage is implemented in the EV mode and the planetary gear set PG is directly connected by the operation of the second clutch CL2 so that the reverse rotation power of the motor / Through the first input gear PG, the third input shaft IS3, the third input gear G3, the first and the reverse transmission gears D1 / R, the first output shaft OS1 and the first output gear OG1, And the rearward traveling is carried out while being transmitted to the gear FG.

The description of the shifting process as described above is one example in which the speed change stages are sequentially ascended, and when the speed change stages descend sequentially, the reverse sequence may be made.

Generator MG can be used as an auxiliary power for the engine ENG when the engine ENG is driven by the rotational power of the engine ENG, the motor / generator MG is driven by the rotor RT Because it rotates all the time, it operates as a generator and generates electrical energy to charge the battery.

In addition, the transmission according to the embodiment of the present invention can shift to second forward speed in the HEV mode.

This is because both the engine ENG and the motor / generator MG are driven in the HEV mode, so that only the speed change stage related to the third input shaft IS3 can be shifted.

Accordingly, the forward first speed is shifted to the HEV 1 speed and the third forward speed to the HEV speed 2, and at this time, the third clutch CL3 is disengaged.

That is, the rotational power of the engine ENG and the motor / generator MG is simultaneously input to the planetary gear set PG, and the rotational power of the engine ENG and the motor / 3 input shaft IS3 and shifted in the same manner as the forward speed change stage, detailed description thereof will be omitted.

Further, the transmission according to the embodiment of the present invention can be shifted to second forward speed in the EV mode.

This is because, in the EV mode, only the speed change stage connected to the third input shaft IS3 can be shifted by being driven by the rotational power of the motor / generator MG.

Thus, the first clutch CL2 shifts the first input shaft IS1 and the third rotational shaft IS3 to be always connected to each other, do.

The rotational power of the motor / generator MG is transmitted to the third input shaft IS3 while the planetary gear set PG is in the direct-coupled state, and the shifting operation is performed in the same manner as the forward speed change stage.

As described above, the transmission for a vehicle according to the first embodiment of the present invention realizes the fourth-speed shift stage as the rotational power of the engine ENG, and at the same time, the rotational speed of the engine ENG and the motor / Speed forward mode in the HEV mode and the forward second speed and reverse speed change stage can be implemented in the EV mode by the rotational power of the motor / generator MG, thereby improving fuel economy.

The engine ENG and the motor / generator MG connected to the respective rotation elements of the planetary gear set PG can smoothly oscillate the friction member without slippage and shut off the rotational power of the engine MG The oscillation can be performed only by the motor / generator MG, so that the soft oscillation can be performed.

Further, since the slip of the friction member does not occur at the time of oscillation, the durability of the friction member is improved, energy loss is minimized, and fuel economy can be improved.

In addition, since the shift control through the motor / generator MG can be performed instead of the shift by the slip of the friction member, a smooth shift can be performed.

Further, when traveling is performed by the rotational power of the engine ENG, the rotational power of the motor / generator MG can be used as an auxiliary power, thereby improving the acceleration performance.

In addition, since the reverse gear stage can be realized by driving the motor / generator MG in reverse, a separate reverse gear mechanism is not required in the first and second shift output mechanisms OUT1 and OUT2, thereby reducing the total length of the transmission , Which can increase the mountability.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, but can be easily and reliably invented by those skilled in the art to which the present invention belongs And all changes in the range of

CL1, CL2: First and second clutches
D1 / R: First and reverse speed change gears
D2, D3, D4: second speed, third speed, fourth speed gear
G1, G2, G3, G4: First, second, third, and fourth input gears
IS1, IS2, IS3: First, second and third input axes
MG: Motor / generator
OS1 and OS2: First and second output axes
OUT1, OUT2: First and second speed change output mechanisms
PG: Planetary gear set
SL1, SL2, SL3: first, second, and third synchronizers

Claims (21)

A first input shaft selectively connected to the output side of the engine;
A second input shaft disposed on the hollow shaft with no rotation interfering with the first input shaft and selectively connected to the first input shaft and having one or more input gears disposed on the outer circumferential surface thereof in relation to the even gears;
One or more input gears disposed on an outer circumferential surface of the hollow shaft in relation to an odd gear stage including a reverse gear, the gear shaft being disposed on the rear side of the second input shaft without rotating intervention with the first input shaft and selectively connected to the first input shaft A third input shaft;
A motor / generator that performs motor and generator functions;
A planetary gear set including a double pinion planetary gear set, wherein a sun gear as a first rotation element is directly connected to the motor / generator, a ring gear as a second rotation element is directly connected to the third input shaft, A planetary gear set directly connected to the first input shaft;
A first clutch selectively connecting the output side of the engine and the first input shaft;
A second clutch selectively connecting the second input shaft or the third input shaft to the first input shaft;
A first shift output mechanism for shifting and outputting rotational power input from the second and third input shafts; And
A second shift output mechanism for shifting and outputting rotational power input from the second and third input shafts;
(20). delete The method according to claim 1,
The input gears on the second input shaft are arranged in order from the front side to the rear side, the first input gear for realizing the fourth speed and the second input gear for realizing the second speed,
Wherein the input gear on the third input shaft is disposed sequentially from the front side to the rear side, the third input gear for implementing the first speed and the reverse speed, and the fourth input gear for implementing the third speed. The method according to claim 1,
And the second clutch is composed of a synchronizer and is disposed between the second input shaft and the third input shaft. delete The method according to claim 1,
The motor / generator
A rotor connected to the first rotary element of the planetary gear set; and a stator disposed on an outer peripheral side of the rotor and fixed to the transmission housing. The method according to claim 1,
The first shift output mechanism
A first output gear disposed in parallel with the second and third input shafts, a first output gear fixedly connected to one end of the first output shaft and outputting rotational power of the first output shaft, And a first synchronizer. 8. The method of claim 7,
The first synchronizer
A first speed change gear and a second speed change gear which are connected to the first input gear and the second input gear in a circumferential direction; The method according to claim 1,
The second shift output mechanism
A second output gear disposed in parallel with the second and third input shafts, a second output gear fixedly connected to one end of the second output shaft and outputting rotational power of the second output shaft, Second, and third synchronizers. 10. The method of claim 9,
The second synchronizer
And a second speed change gear connected to the second input gear and an external gear is selectively and synchronously connected to the second output shaft. 10. The method of claim 9,
The third synchronizer
And a third speed change gear connected to the fourth input gear and the external gear is selectively and synchronously connected to the second output shaft. A first input shaft selectively connected to the output side of the engine;
A second input shaft disposed on the first input shaft without rotation interference with the first input shaft and selectively connected to the first input shaft and having two or more input gears disposed on the outer circumferential surface thereof with different gear teeth and related to the even gears;
Wherein the first input shaft and the second input shaft are connected to the first input shaft and the second input shaft on the first input shaft without rotating intervention and are selectively connected to the first input shaft, A third input shaft on which the input gear is disposed;
A motor / generator disposed on a rear side of the third input shaft on the first input shaft to perform a motor and a generator function;
A pinion planetary gear set disposed at an inner diameter portion of the motor / generator, a sun gear connected to the motor / generator, a ring gear connected to the third input shaft, and a planetary carrier connected to the first input shaft Planetary gear set;
A first clutch selectively connecting the output side of the engine and the first input shaft;
A second clutch configured by a synchronizer disposed on a first input shaft between the second input shaft and a third input shaft, the second clutch selectively connecting the first input shaft to the second input shaft or the third input shaft;
A first speed change output mechanism including a first synchronizer that shifts rotational power inputted from the second and third input shafts to first forward speed, forward reverse speed and forward fourth speed and outputs the same; And
A second synchronizer for shifting the rotational power input from the second input shaft to second forward speed and outputting the rotational power to the forward second speed, and a third synchronizer for shifting the rotational power input from the third input shaft to third forward speed and outputting the rotational power; 2-speed output mechanism;
(20). delete 13. The method of claim 12,
The input gears on the second input shaft are arranged in order from the front side to the rear side, the first input gear for realizing the fourth speed and the second input gear for realizing the second speed,
Wherein the input gear on the third input shaft is disposed sequentially from the front side to the rear side, the third input gear for implementing the first speed and the reverse speed, and the fourth input gear for implementing the third speed. delete 13. The method of claim 12,
The motor / generator
A rotor connected to the first rotary element of the planetary gear set; and a stator disposed on an outer peripheral side of the rotor and fixed to the transmission housing. 13. The method of claim 12,
The first shift output mechanism
A first output gear disposed in parallel with the second and third input shafts, a first output gear fixedly connected to one end of the first output shaft and outputting rotational power of the first output shaft, And a first synchronizer. 18. The method of claim 17,
The first synchronizer
A first speed change gear and a second speed change gear which are connected to the first input gear and the second input gear in a circumferential direction; 13. The method of claim 12,
The second shift output mechanism
A second output gear disposed in parallel with the second and third input shafts, a second output gear fixedly connected to one end of the second output shaft and outputting rotational power of the second output shaft, Second, and third synchronizers. 20. The method of claim 19,
The second synchronizer
And a second speed change gear connected to the second input gear and an external gear is selectively and synchronously connected to the second output shaft. 20. The method of claim 19,
The third synchronizer
And a third speed change gear connected to the fourth input gear and the external gear is selectively and synchronously connected to the second output shaft.

Images