KR20200128264A - Dct for vehicle - Google Patents

Abstract

The present invention includes: a first clutch and a second clutch installed to control supply of power to a first input shaft and a second input shaft arranged concentrically; a first output shaft and a second output shaft arranged parallel to the first input shaft and the second input shaft; a plurality of shift gear driving gears installed on the first input shaft and the second input shaft; a plurality of shift gear driven gears provided on the first and second output shafts so as to be engaged with the plurality of shift gear driving gears to form a plurality of shift gears; and a third clutch provided to connect or separate a first selected gear and a second selected gear, which are two shift gear driven gears, installed adjacent to each other on the selected output shaft which is one of the first output shaft and the second output shaft, among the shift gear driven gears.

Description

Vehicle DCT{DCT FOR VEHICLE}

The present invention relates to a DCT for a vehicle, and more particularly, to a DCT structure capable of relatively reducing an electric length while implementing a plurality of shift stages.

FF (Front engine Front drive) vehicles are often arranged in the transverse direction of the vehicle in a state in which the engine and transmission are combined to form an assembly. In this case, the overall length of the engine transmission assembly must be accommodated within the lateral width of the vehicle engine compartment. In addition, the reduction of the overall length of the engine transmission assembly is one of the very important goals in powertrain design.

On the other hand, since the engine's power and fuel economy characteristics vary greatly depending on the driving area, it is desirable to operate the engine in the optimal driving range, and for this purpose, the transmission connecting the engine and the driving wheels provides as many speeds as possible. You should be able to do it.

In general, as the gearbox that the transmission can provide increases, the overall length of the transmission becomes longer, and thus, the increase in the gearshift level and the vehicle mountability of the transmission are incompatible with each other.

The matters described as the background technology of the present invention are only for enhancing an understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art. Will be

KR 1020100088731 A

The present invention provides a DCT for a vehicle capable of providing a plurality of shift stages and allowing a relatively short overall length to improve fuel economy of the vehicle and secure vehicle mounting. There is a purpose.

The present invention vehicle DCT for achieving the object as described above,

A first clutch and a second clutch installed to intermittent power to the first input shaft and the second input shaft respectively arranged as concentric shafts;

A first output shaft and a second output shaft disposed parallel to the first input shaft and the second input shaft;

A plurality of shift stage driving gears installed on the first and second input shafts;

A plurality of shift stage driven gears provided on the first and second output shafts so as to be engaged with the plurality of shift stage driving gears to form a plurality of shift stages;

To be able to connect or separate the first selected gear and the second selected gear, which are two shift-stage driven gears installed adjacent to each other, to a selected output shaft that is one of the first output shaft and the second output shaft among the shift stage driven gears. A third clutch provided;

It characterized in that it is configured to include.

The speed change gears are installed to rotate together with the first input shaft or the second input shaft, respectively;

The shift stage driven gears are respectively installed to be relatively rotatable to the first output shaft or the second output shaft,

A plurality of single shift gear units may be provided on the first output shaft and the second output shaft so that the shift gear driven gear can be intermittently interrupted to the first output shaft or the second output shaft, respectively.

One of the first selection gear and the second selection gear is meshed with a shift stage driving gear installed on the first input shaft, and the other is meshed with a shift stage driving gear installed on the second input shaft;

The third clutch may be formed of a sleeve synchronizing device provided to intercept between the first selection gear and the second selection gear rotatably installed on the selection output shaft.

The plurality of shift stage driving gears and shift stage driven gears are installed to implement the rest of the shift stages except for the lowest gear stage with the largest transmission ratio and the highest gear stage with the smallest transmission ratio among a series of gear stages that can be implemented by the DCT. ;

The lowermost shift stage and the uppermost shift stage may be configured to be implemented using the remaining shift stage driving gear and the shift stage driven gear in a state in which the sleeve synchronous device connects the first selected gear and the second selected gear.

A reverse drive gear for implementing a reverse stage is integrally provided with the first selection gear;

The reverse driven gear installed on the output shaft other than the selected output shaft among the first output shaft and the second output shaft may be engaged with the reverse drive gear.

A reverse drive gear for implementing a reverse stage is integrally provided with the first selection gear;

A reverse driven gear engaged with the reverse drive gear is rotatably installed on a reverse idler shaft provided parallel to the selected output shaft;

A reverse vibrator device may be provided on the reverse idler shaft to intercept the reverse driven gear to the reverse idler shaft.

The first input shaft is provided with the gear shift drive gear for implementing an odd number of gear stages among the series of shift stages;

The second input shaft is provided with the shift gear drive gear for implementing an even shift speed among the series of shift stages;

The selected output shaft is a second output shaft;

The first selected gear is a gear shift driven gear installed to implement an odd shift gear on the second output shaft;

The second selected gear may be a gear shift driven gear provided to implement an even shift gear on the second output shaft.

The first input shaft is provided with 3&5 stage drive gears;

The second input shaft is provided with a two-stage driving gear and a four- and sixth-stage driving gear;

The first output shaft is provided with a five-stage driven gear and a sixth-stage driven gear;

The second output shaft may be provided with a two-stage driven gear, a three-stage driven gear and a four-stage driven gear.

The first selected gear is the three-stage driven gear;

The second selected gear is the four-stage driven gear;

The sleeve synchronizing device may be installed so as to intercept between the three-stage driven gear and the four-stage driven gear.

The first input shaft is provided with the gear shift drive gear for implementing an even shift gear among the series of gear shift stages;

The second input shaft is provided with the gear shift drive gear for implementing an odd number of gear stages among the series of shift stages;

The selected output shaft is a second output shaft;

The first selected gear is a gear shift driven gear installed to implement an odd shift gear on the second output shaft;

The second selected gear may be a gear shift driven gear provided to implement an even shift gear on the second output shaft.

A two-stage drive gear, a four-stage drive gear, and a six-stage drive gear are provided on the first input shaft;

A three-stage driving gear and a five-stage driving gear are provided on the second input shaft;

A two-stage driven gear and a five-stage driven gear are provided on the first output shaft;

The second output shaft may be provided with a three-stage driven gear, a four-stage driven gear, and a sixth-stage driven gear.

The first selected gear is the three-stage driven gear;

The second selected gear is the four-stage driven gear;

The sleeve synchronizing device may be installed so as to intercept between the three-stage driven gear and the four-stage driven gear.

The present invention is capable of providing a plurality of shift stages, while allowing a relatively short overall length, thereby improving vehicle mountability of a transmission, and ultimately contributing to the improvement of fuel economy of a vehicle by providing a plurality of shift stages. .

1 is a view showing a first embodiment of a vehicle DCT according to the present invention;
FIG. 2 is a view explaining that the first embodiment of FIG. 1 implements stage 1;
FIG. 3 is a diagram explaining that the first embodiment of FIG. 1 implements a second stage;
FIG. 4 is a diagram explaining that the first embodiment of FIG. 1 implements three stages;
FIG. 5 is a diagram illustrating that the first embodiment of FIG. 1 implements a fourth stage;
6 is a view explaining that the first embodiment of FIG. 1 implements a fifth stage;
FIG. 7 is a view explaining that the first embodiment of FIG. 1 implements a sixth stage;
FIG. 8 is a diagram illustrating that the first embodiment of FIG. 1 implements stage A;
9 is a view explaining that the first embodiment of FIG. 1 implements stage B;
FIG. 10 is a diagram explaining that the first embodiment of FIG. 1 implements the R stage;
11 is an operation table summarizing whether a clutch and a synchronizing device are operated at each shift stage implemented in the first embodiment of FIG. 1;
12 is a view showing a second embodiment of a vehicle DCT according to the present invention;
13 is a view showing a third embodiment of a vehicle DCT according to the present invention;
14 is a diagram showing a fourth embodiment of a vehicle DCT according to the present invention.

1 to 11, a first embodiment of a DCT for a vehicle according to the present invention is a first clutch installed to control power on the first input shaft IN1 and the second input shaft IN2 arranged concentrically. (CL1) and a second clutch (CL2); A first output shaft OUT1 and a second output shaft OUT2 disposed parallel to the first input shaft IN1 and the second input shaft IN2; A plurality of shift stage driving gears installed on the first input shaft IN1 and the second input shaft IN2; A plurality of shift stage driven gears provided on the first output shaft OUT1 and the second output shaft OUT2 so as to be engaged with the plurality of shift stage driving gears to form a plurality of shift stages; Among the shift-stage driven gears, a first selection gear (SG1), which is two shift-stage driven gears installed adjacent to each other, to a selection output shaft (OUT_S) that is one of the first output shaft (OUT1) and the second output shaft (OUT2), and It is configured to include a third clutch CL3 provided to connect or separate the second selection gear SG2 from each other.

That is, in the present invention, a plurality of shift stages can be implemented by the shift stage driving gear and the shift stage driven gear, and the first selection gear SG1 and the second selection gear SG2 by the third clutch CL3. Is configured to be connected to or separated from each other, and in a state in which the first selected gear (SG1) and the second selected gear (SG2) are connected to each other, it is possible to achieve simple engagement between one shift stage drive gear and one shift stage driven gear. It is configured to additionally implement shift stages other than the shift stages formed by the above.

The shift stage driving gear is installed to rotate together with the first input shaft IN1 or the second input shaft IN2, respectively, and the shift stage driven gear is relative to the first output shaft OUT1 or the second output shaft OUT2, respectively. It is installed to be rotatable, and a plurality of gears are provided on the first output shaft OUT1 and the second output shaft OUT2 so that the shift stage driven gear can be intermittently connected to the first output shaft OUT1 or the second output shaft OUT2, respectively. A speed change gearbox is provided.

Therefore, when one of the shift-stage driven gears is connected to the first output shaft (OUT1) or the second output shaft (OUT2) with the shift-stage driven gear, it is formed through the shift-stage driven gear and the gear-shift drive gear meshed thereto. The shift stage becomes the shift stage currently implemented by DCT.

For reference, in this embodiment, the selected output shaft OUT_S is the second output shaft OUT2.

One of the first selection gear SG1 and the second selection gear SG2 meshes with a shift stage drive gear installed on the first input shaft IN1, and the other one is a shift stage drive installed on the second input shaft IN2. It is meshed with the gear.

Therefore, when the first selection gear SG1 and the second selection gear SG2 are connected to each other by the third clutch CL3, the first input shaft IN1 and the second input shaft IN2 are connected to each other. There is an effect of connecting through the first selected gear (SG1) and the second selected gear (SG2).

The third clutch CL3 is a sleeve synchronization device ST provided to intercept between the first and second selection gears SG1 and SG2 rotatably installed on the selection output shaft OUT_S. Done.

The plurality of shift stage driving gears and shift stage driven gears are installed to implement the rest of the shift stages except for the lowest gear stage with the largest transmission ratio and the highest gear stage with the smallest transmission ratio among a series of gear stages that can be implemented by the DCT. .

For example, if the series of shift stages that can be implemented by the DCT are 1 to 7 gears, the lowest gear with the largest speed ratio is 1, and the highest gear with the smallest gear ratio is 7 gears, The plurality of gear shift drive gears and shift gear driven gears are paired with each other to form a direct gear, excluding the 1st and 7th gears.

The lowermost and uppermost gears are connected by the sleeve synchronizing device ST to the first and second selection gears SG1 and SG2. As a result, the first input shaft IN1 and the second input shaft ( In a state in which IN2) is connected, it is configured to be implemented using the remaining shift stage driving gear and shift stage driven gear.

For example, in the above example, the first and seventh stages are used to implement the second to sixth stages in a state in which the first selection gear (SG1) and the second selection gear (SG2) are connected by the sleeve synchronization device (ST). The first and second selected gears (SG1) and second selected gears (SG2) among the shift stage drive gears and the shift stage driven gears are implemented by the rest of the shift stage drive gears and the shift stage driven gears except for the shift stage drive gears meshing therewith. will be.

In the first embodiment, the first input shaft IN1 is provided with the shift stage driving gear for implementing an odd number of shift stages among the series of shift stages; The second input shaft IN2 is provided with the shift gear drive gear for implementing an even shift gear among the series of shift stages; The selected output shaft OUT_S is a second output shaft OUT2; The first selection gear SG1 is a shift stage driven gear installed to implement an odd number of shift stages on the second output shaft OUT2; The second selection gear SG2 is a shift stage driven gear provided to implement an even number of shift stages on the second output shaft OUT2.

That is, as shown in FIG. 1, the first input shaft IN1 is provided with 3&5 stage drive gears 3&5D; The second input shaft IN2 is provided with a two-stage driving gear (2D) and a four- and sixth-stage driving gear (4&6D); The first output shaft OUT1 is provided with a 5-gear driven gear (5P) and a 6-gear driven gear (6P); The second output shaft OUT2 is provided with a two-stage driven gear (2P), a three-stage driven gear (3P), and a four-stage driven gear (4P).

Here, the first selection gear (SG1) is the three-stage driven gear (3P); The second selected gear (SG2) is the four-stage driven gear (4P); The sleeve synchronizing device ST is installed so as to intercept between the three-stage driven gear 3P and the four-stage driven gear 4P.

On the other hand, the first selection gear (SG1) is provided with a reverse drive gear (RD) for implementing a reverse end integrally; The reverse driven gear (RP) installed on the first output shaft (OUT1), which is the remaining output shaft (OUT_S) of the first output shaft (OUT1) and the second output shaft (OUT2), is engaged with the reverse drive gear (RD). Can be used to implement a backward diagnosis.

Alternatively, as in the second embodiment illustrated in FIG. 12, the first selection gear SG1 is integrally provided with a reverse drive gear RD for implementing a reverse stage; A reverse driven gear (RP) engaged with the reverse drive gear (RD) is rotatably installed on a reverse idler shaft (IDS) provided parallel to the selected output shaft (OUT_S); The reverse idler shaft IDS may be provided with a reverse vibrator device RS so that the reverse driven gear RP can be intercepted to the reverse idler shaft IDS to implement a reverse diagnosis.

For reference, for reference, the first output shaft OUT1, the second output shaft OUT2, and the reverse idler shaft IDS have a first output gear OG1, a second output gear OG2, and a reverse output gear. OGR) is provided, and these first output gear (OG1), second output gear (OG2) and reverse output gear (OGR) are commonly engaged with a differential ring gear (not shown) to draw power to the differential. It is structured to do.

The implementation of each of the shift stages in the embodiment of FIG. 1 as described above is described in FIGS. 2 to 10, respectively, and FIG. 11 shows the first clutch CL1 and the second clutch ( CL2), the operation of the gearbox synchronizing device and the sleeve synchronizing device (ST) are summarized in a table.

In FIG. 11, a total of four single speed shifting devices are shown, and a 5-stage shifting device 5S installed to intercept the 5-speed driven gear 5P from the first output shaft OUT1 to the first output shaft OUT1. And, a 6&R single synchronous device (6&RS) installed to intercept the six-stage driven gear (6P) or the reverse driven gear (RP) from the first output shaft (OUT1) to the first output shaft (OUT1), and the second output shaft A three-stage synchronous device (3S) installed to interrupt the three-stage driven gear (3P) to the second output shaft (OUT2) at (OUT2), and the two-stage driven gear (2P) at the second output shaft (OUT2) or It consists of a 2&4 stage synchronous device 2&4S installed to interrupt the 4-stage driven gear 4P to the second output shaft OUT2.

Among the shift stages implemented by the DCT of the first embodiment, the 2nd to 6th gears are substantially the same as the operation of a conventional general transmission, so a detailed description is omitted. Hereinafter, the 1st gear, the A gear, the B gear, and the reverse gear R Let's look at the implementation of stage.

Here, the A-stage typically forms a speed ratio between the 5th speed ratio and the 6th speed ratio in a series of speed ratio arrangements as in this embodiment, and the B-stage may form a speed ratio corresponding to the 7th speed.

When the B-stage is used as the 7th stage, as can be seen with reference to FIG. 11, the 1st to 6th stages are shifted by crossing the first clutch CL1 and the second clutch CL2 to each other. As the so-called "CLUTCH TO CLUTCH" shift can be implemented, torque interruption in which torque is cut off to the driving wheel during shifting does not occur, but since the 6th and 7th gears use the same second clutch (CL2), the torque during shifting INTERRUPTION may occur. However, the 6th and 7th gears are high gearshifts used in a high vehicle speed state, and do not have a large gear-to-step ratio and do not cause a significant problem in shifting feeling due to the driving inertia of the vehicle.

2 illustrates a state in which the first stage is implemented, and the power transmitted to the first input shaft IN1 through the first clutch CL1 is the 3&5 stage drive gear (3&5D), the 3-stage driven gear (3P), and the sleeve Synchronization device (ST), 4-speed driven gear (4P), 4&6 gear drive gear (4&6D), 2nd input shaft (IN2), 2-speed drive gear (2D), 2-speed driven gear (2P), 2&4 gear drive (2&4S) , While passing through the second output shaft OUT2 in order to form a first gear stage.

Here, the sleeve synchronizing device ST connects the three-stage driven gear 3P and the four-stage driven gear 4P, so that the first input shaft IN1 is the 3&5 stage driven gear (3&5D), the 3-stage driven gear. It is connected to transmit power to the second input shaft IN2 through the gear 3P, the fourth driven gear 4P, and the 4&6 gear drive gear 4&6D, and the second input shaft IN2 from the first input shaft IN1 The power transmitted to is the transmission ratio multiplied by the transmission ratio between the 3&5 gears (3&5D) and the 3rd driven gear (3P) and the 4th driven gear (4P) and the 4&6 gears (4&6D). Is transferred to, and then shifts back to the speed ratio between the two-stage driving gear 2D and the two-stage driven gear 2P, thereby forming a first speed ratio.

For reference, the sleeve synchronizing device (ST) is composed of a synchro mesh mechanism having a synchronizer ring almost the same as a conventional synchronizing device, but the hub is fixed to the three-stage driven gear (3P), and the sleeve is on the hub. It may be configured to connect the three-stage driven gear 3P and the four-stage driven gear 4P in a state that linearly slides and meshes with the hub and the clutch gear provided in the four-stage driven gear 4P at the same time.

8 is a state in which a stage A is formed, and the power transmitted to the first input shaft IN1 through the first clutch CL1 is a 3&5 stage drive gear (4&6D), a 3-stage driven gear (3P), and a sleeve synchronization. As described above, while being drawn out to the first output shaft (OUT1) through the device (ST), 4-stage driven gear (4P), 4&6 gears (4&6D), 6-stage driven gear (6P) and 6&R single synchronous device (6&RS). It forms the transmission ratio between 5th and 6th gear.

9 is a state in which the B-stage is formed, and the power transmitted to the second input shaft IN2 through the second clutch CL2 is the 4&6 stage drive gears 4&6D, the 4-stage driven gear 4P, and the sleeve Synchronization device (ST), 3-stage driven gear (3P), 3&5 gears (3&5D), 5-stage driven gear (5P) and 5-stage synchronous device are transferred to the first output shaft (OUT1), forming a 7-speed transmission ratio Is done.

FIG. 10 is a state in which the R-stage, which is a reverse shift stage, is formed, and the power transmitted to the first input shaft IN1 through the first clutch CL1 is a 3&5 gear drive gear (3&5D), a 3-step driven gear (3P). ), the reverse drive gear RD, the reverse driven gear RP, and the 6&R single synchronous device are transferred to the first output shaft OUT1, forming a reverse stage.

13 shows a third embodiment of the present invention, wherein the first input shaft IN1 is provided with the shift gear drive gear for implementing an even shift speed among the series of shift stages; The second input shaft IN2 is provided with the shift gear drive gear for implementing an odd number of shift stages among the series of shift stages; The selected output shaft OUT_S is a second output shaft OUT2; The first selection gear SG1 is a shift stage driven gear installed to implement an odd number of shift stages on the second output shaft OUT2; The second selection gear SG2 is a shift stage driven gear provided to implement an even number of shift stages on the second output shaft OUT2.

That is, the first input shaft IN1 is provided with a two-stage driving gear (2D), a four-stage driving gear, and a six-stage driving gear; The second input shaft IN2 is provided with a three-speed drive gear and a five-speed drive gear; The first output shaft OUT1 is provided with a two-stage driven gear (2P) and a five-stage driven gear (5P); The second output shaft OUT2 is provided with a three-stage driven gear (3P), a four-stage driven gear (4P), and a six-stage driven gear (6P). In contrast to the first embodiment, the first input shaft IN1 Even speed shifts are arranged at and odd shift speeds are arranged at the second input shaft IN2.

Here too, the first selection gear SG1 is the three-stage driven gear 3P; The second selected gear (SG2) is the four-stage driven gear (4P); The sleeve synchronizing device ST is installed to intercept between the three-stage driven gear 3P and the four-stage driven gear 4P.

The first selection gear SG1 is integrally provided with a reverse driving gear RD for implementing a reverse stage; The reverse driven gear (RP) installed on the first output shaft (OUT1), which is the remaining output shaft (OUT_S) of the first output shaft (OUT1) and the second output shaft (OUT2), is engaged with the reverse drive gear (RD). Configuration.

The first output shaft OUT1 is provided with 2&5 single synchronous devices 2&5D so as to interrupt the 2nd and 5th driven gears 2P and 5P to the first output shaft OUT1, and the reverse A reverse vibrator (RS) is provided to interrupt the driven gear (RP) to the first output shaft (OUT1), and the three-stage driven gear (3P) is connected to the second output shaft (OUT2). A three-stage synchronous device (3S) for intercepting OUT2), and a 4&6 synchronous device (4&6S) to intercept the four-stage driven gear (4P) and six-stage driven gear (6P) to the second output shaft (OUT2). It is equipped.

14 shows a fourth embodiment of the present invention, the other configuration is the same as in the third embodiment, and only the part implementing the reverse end is different. The first selection gear SG1 implements the reverse end. A reverse drive gear (RD) for integrally provided; A reverse driven gear (RP) engaged with the reverse drive gear (RD) is rotatably installed on a reverse idler shaft (IDS) provided parallel to the selected output shaft (OUT_S); The reverse idler shaft IDS is provided with a reverse vibrator device RS so that the reverse driven gear RP can be intercepted with the reverse idler shaft IDS.

The above embodiments basically have almost the same technical idea as the first embodiment, and the operation thereof is almost the same, and a detailed description thereof will be omitted.

As described above, the present invention can reduce the overall length of the DCT by not having separate gear shift drive gears and shift gear driven gears for the lowest and highest gears, while providing a relatively large number of gears to provide fuel economy of the vehicle. Can contribute to improvement.

In addition, as described above, if separate shift stage driving gears and shift stage driven gears are not provided for the lowest and highest gears, the distance between the shaft supporting the shift stage driving gear and the shaft supporting the shift stage driven gear can be shortened. Accordingly, it is possible to reduce the volume and weight of the transmission, thereby improving the fuel efficiency of the vehicle and reducing the manufacturing cost of the transmission.

Although the present invention has been illustrated and described with reference to specific embodiments, it is understood in the art that the present invention can be variously improved and changed within the scope of the technical spirit of the present invention provided by the following claims. It will be obvious to a person of ordinary knowledge.

IN1; 1st input axis
IN2; 2nd input shaft
CL1; 1st clutch
CL2; 2nd clutch
CL3; 3rd clutch
OUT1; 1st output shaft
OUT2; 2nd output shaft
OUT_S; Selected output shaft
SG1; First selected gear
SG2; 2nd selected gear
ST; Sleeve synchronization device

Claims (12)

A first clutch and a second clutch installed to intermittent power to the first input shaft and the second input shaft respectively arranged as concentric shafts;
A first output shaft and a second output shaft disposed parallel to the first input shaft and the second input shaft;
A plurality of shift stage driving gears installed on the first and second input shafts;
A plurality of shift stage driven gears provided on the first and second output shafts so as to be engaged with the plurality of shift stage driving gears to form a plurality of shift stages;
To be able to connect or separate the first selected gear and the second selected gear, which are two shift-stage driven gears installed adjacent to each other, to a selected output shaft that is one of the first output shaft and the second output shaft among the shift stage driven gears A third clutch provided;
DCT for a vehicle, characterized in that configured to include. The method according to claim 1,
The speed change gears are installed to rotate together with the first input shaft or the second input shaft, respectively;
The shift stage driven gears are installed to be relatively rotatable to the first output shaft or the second output shaft, respectively,
A plurality of single shift gear units are provided on the first output shaft and the second output shaft so that the shift stage driven gear can be intermittently interrupted to the first or second output shaft
Vehicle DCT, characterized in that. The method according to claim 2,
One of the first selection gear and the second selection gear is meshed with a shift stage driving gear installed on the first input shaft, and the other is meshed with a shift stage driving gear installed on the second input shaft;
The third clutch is composed of a sleeve synchronizing device provided to intercept between the first selected gear and the second selected gear rotatably installed on the selected output shaft
Vehicle DCT, characterized in that. The method of claim 3,
The plurality of shift stage driving gears and shift stage driven gears are installed to implement the rest of the shift stages except for the lowest shift stage with the largest transmission ratio and the highest transmission stage with the smallest transmission ratio among a series of transmission stages that the DCT can implement. ;
The lowermost and uppermost gears are configured to be implemented using the remaining shift stage driving gear and shift stage driven gear in a state in which the sleeve synchronization device connects the first and second selected gears.
Vehicle DCT, characterized in that. The method of claim 4,
A reverse drive gear for implementing a reverse stage is integrally provided with the first selection gear;
In the reverse drive gear, a reverse driven gear installed on the output shaft other than the selected output shaft among the first and second output shafts is engaged.
Vehicle DCT, characterized in that. The method of claim 4,
A reverse drive gear for implementing a reverse stage is integrally provided with the first selection gear;
A reverse driven gear engaged with the reverse drive gear is rotatably installed on a reverse idler shaft provided parallel to the selected output shaft;
The reverse idler shaft is provided with a reverse vibrator device so as to interrupt the reverse driven gear to the reverse idler shaft.
Vehicle DCT, characterized in that. The method of claim 4,
The first input shaft is provided with the gear shift drive gear for implementing an odd number of gear stages among the series of shift stages;
The second input shaft is provided with the shift gear drive gear for implementing an even shift speed among the series of shift stages;
The selected output shaft is a second output shaft;
The first selected gear is a gear shift driven gear installed to implement an odd shift gear on the second output shaft;
The second selected gear is a shift gear driven gear provided to implement an even shift gear on the second output shaft
Vehicle DCT, characterized in that. The method of claim 7,
The first input shaft is provided with 3&5 stage drive gears;
The second input shaft is provided with a two-stage driving gear and a four- and sixth-stage driving gear;
The first output shaft is provided with a five-stage driven gear and a sixth-stage driven gear;
The second output shaft is provided with a 2-stage driven gear, a 3-stage driven gear and a 4-stage driven gear
Vehicle DCT, characterized in that. The method of claim 8,
The first selected gear is the three-stage driven gear;
The second selected gear is the four-stage driven gear;
The sleeve synchronizing device is installed so as to intercept between the three-stage driven gear and the four-stage driven gear.
Vehicle DCT, characterized in that. The method of claim 4,
The first input shaft is provided with the shift gear drive gear for implementing an even shift speed among the series of shift stages;
The second input shaft is provided with the gear shift drive gear for implementing an odd number of shift stages among the series of shift stages;
The selected output shaft is a second output shaft;
The first selected gear is a shift stage driven gear installed to implement an odd number of shift stages on the second output shaft;
The second selected gear is a shift gear driven gear provided to implement an even shift gear on the second output shaft
Vehicle DCT, characterized in that. The method of claim 10,
A two-stage drive gear, a four-stage drive gear, and a six-stage drive gear are provided on the first input shaft;
A three-stage driving gear and a five-stage driving gear are provided on the second input shaft;
A two-stage driven gear and a five-stage driven gear are provided on the first output shaft;
The second output shaft is provided with a three-stage driven gear, a four-stage driven gear, and a sixth-stage driven gear.
Vehicle DCT, characterized in that. The method of claim 11,
The first selected gear is the three-stage driven gear;
The second selected gear is the four-stage driven gear;
The sleeve synchronizing device is installed so as to intercept between the three-stage driven gear and the four-stage driven gear.
Vehicle DCT, characterized in that.

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