CN110686053A - An eight-speed dual-clutch transmission - Google Patents

Abstract

The invention provides an eight-speed dual clutch transmission, comprising an engine input end, a clutch module, a transmission module and an output end; the clutch module includes a first clutch and a second clutch; the transmission module includes a first gear, a second gear and a third gear , fourth gear, fifth gear, sixth gear, seventh gear, eighth gear, ninth gear, tenth gear, eleventh gear, twelfth gear, thirteenth gear, fourteenth gear, idler Wheel, First Synchronizer, Second Synchronizer, Third Synchronizer, Fourth Synchronizer, First Input Shaft, Second Input Shaft, Output Shaft, Intermediate Shaft, First Intermediate Bushing Shaft and Second Intermediate Bushing axis. The transmission module of the present invention adopts 6 pairs of forward gear pairs and 1 pair of reverse gear pairs, and provides eight power shift gears, including one direct gear and An overdrive.

Description

An eight-speed dual-clutch transmission

technical field

The invention relates to a transmission, in particular, to an eight-speed dual-clutch transmission, which belongs to the technical field of vehicle transmission.

Background technique

With the development of today's automobile industry, energy saving and emission reduction have become the main direction of design, and the design requirements of transmissions are becoming more and more strict. Dual-clutch automatic transmissions with high transmission efficiency and simple structure have gradually become the development trend. The dual-clutch transmission combines the advantages of the simple structure and high efficiency of the manual transmission and the power shift of the automatic transmission. It uses two sets of clutches to replace the less efficient torque converter, and the two sets of clutches work alternately to achieve no backlash. The effect of power shifting not only makes the driving of the vehicle easier, but also effectively improves the comfort, power and safety of the car. However, at this stage, the multi-speed dual-clutch transmission is mostly a three-degree-of-freedom transmission mechanism. With the increase in the number of required gears, the volume and weight increase significantly, which makes it impossible to arrange on the car. Therefore, the present invention provides an eight-speed dual-clutch transmission, which adopts a multi-degree-of-freedom fixed-axis gear mechanism design, utilizes the multiplexing of gear pairs, and realizes the multi-speed of the dual-clutch transmission without excessively increasing the volume and weight. , Large transmission ratio range design.

SUMMARY OF THE INVENTION

According to the technical problem that the above-mentioned multi-speed dual-clutch transmission is too large in volume and weight, which leads to the technical problem that it cannot be arranged on the vehicle, a compact eight-speed dual-clutch transmission is provided. The invention mainly makes the transmission structure compact and the reusability of the gear mechanism improved by rationally arranging the gears and the synchronizer, thereby meeting the design requirements of light weight and compact type.

The technical means adopted in the present invention are as follows:

An eight-speed dual-clutch transmission, comprising: an engine input end, a clutch module, a transmission module and an output end;

The clutch module includes: a first clutch and a second clutch;

The transmission module includes: a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a seventh gear, an eighth gear, a ninth gear, a tenth gear, and an eleventh gear , the twelfth gear, the thirteenth gear, the fourteenth gear, the idler gear, the first synchronizer, the second synchronizer, the third synchronizer, the fourth synchronizer, the first input shaft, the second input shaft, the output shaft, intermediate shaft, first intermediate sleeve shaft and second intermediate sleeve shaft;

the first clutch is connected to the first input shaft, and the second clutch is connected to the second input shaft;

The transmission adopts two shaft systems arranged in parallel, and the two shaft systems are a first shaft system and a second shaft system, wherein the first input shaft, the second input shaft and the transmission output shaft are arranged on the first shaft In the system, the second input shaft is sleeved on the first input shaft; the intermediate shaft, the first intermediate shaft sleeve and the second intermediate shaft sleeve are arranged in the second shaft system, and the first An intermediate shaft sleeve shaft and a second intermediate shaft sleeve shaft are both sleeved on the intermediate shaft;

The first clutch, the seventh gear and the ninth gear are all fixedly connected to the first input shaft; the second clutch, the first gear and the first synchronizer are all fixedly connected to the second input shaft , the third gear and the fifth gear are idle on the second input shaft; the second synchronizer and the thirteenth gear are fixedly connected to the output shaft, and the eleventh gear is idle on the on the output shaft; the third synchronizer and the fourteenth gear are fixedly connected to the intermediate shaft, the second gear is idle in the intermediate shaft; the fourth gear, the sixth gear and The fourth synchronizer is fixedly connected to the first intermediate shaft sleeve shaft, the eighth gear is idly sleeved on the first intermediate shaft sleeve shaft; the tenth gear and the twelfth gear are fixedly connected to the on the second intermediate sleeve shaft;

The left side of the first synchronizer meshes with the third gear, the right side meshes with the fifth gear; the left side of the second synchronizer meshes with the first input shaft, and the right side meshes with the tenth gear A gear meshes; the left side of the third synchronizer meshes with the second gear, and the right side meshes with the first intermediate sleeve shaft; the left side of the fourth synchronizer meshes with the eighth gear, and the right side meshes with the eighth gear. The side meshes with the second intermediate sleeve shaft; the first gear meshes with the second gear, the third gear meshes with the fourth gear, and the fifth gear meshes with the sixth gear , the seventh gear meshes with the eighth gear through the idler gear, the ninth gear meshes with the tenth gear, the eleventh gear meshes with the twelfth gear, and the first gear meshes with the twelfth gear. Thirteen gears mesh with the fourteenth gear.

Further, the eight-speed dual-clutch transmission is provided with eight forward gears and one reverse gear, which are:

When the transmission is in the 1st gear state, the first synchronizer, the third synchronizer and the fourth synchronizer work, the first synchronizer meshes to the right, and the third synchronizer meshes to the left , the fourth synchronizer meshes to the right; after the engine power is input to the transmission module through the engine input end through the first clutch and the first input shaft, it sequentially passes through the ninth gear, the Ten gears, the fourth synchronizer, the first intermediate sleeve shaft, the sixth gear, the fifth gear, the first synchronizer, the second input shaft, the first gear , the second gear, the third synchronizer, the intermediate shaft, the fourteenth gear and the thirteenth gear are finally output to the transmission output shaft;

When the transmission is in the 2nd gear state, the third synchronizer works, and the third synchronizer meshes to the left; the engine power passes through the second clutch, the second input shaft, and the engine through the engine input end. the first gear, the second gear, the third synchronizer, the intermediate shaft, the fourteenth gear and the thirteenth gear are finally output to the transmission output shaft;

When the transmission is in the 3rd gear state, the second synchronizer works, and the second synchronizer meshes to the right; the engine power passes through the first clutch, the first input shaft, and the engine through the engine input end. the ninth gear, the tenth gear, the second intermediate sleeve shaft, the twelfth gear, the eleventh gear and the second synchronizer are finally output to the transmission output shaft;

When the transmission is in the 4th gear state, the first synchronizer and the third synchronizer work, the first synchronizer is engaged to the left, and the third synchronizer is engaged to the right; the engine power is transmitted through the engine The input end passes through the second clutch, the second input shaft, the first synchronizer, the third gear, the fourth gear, the first intermediate sleeve shaft, and the third synchronizer , the intermediate shaft, the fourteenth gear and the thirteenth gear are finally output to the transmission output shaft;

When the transmission is in the 5th gear state, the third synchronizer and the fourth synchronizer work, the third synchronizer meshes to the right, and the fourth synchronizer meshes to the right; the engine power is transmitted through the engine The input end passes through the first clutch, the first input shaft, the ninth gear, the tenth gear, the fourth synchronizer, the first intermediate sleeve shaft, and the third synchronizer , the intermediate shaft, the fourteenth gear and the thirteenth gear are finally output to the transmission output shaft;

When the transmission is in the 6th gear state, the first synchronizer and the third synchronizer work, the first synchronizer is engaged to the right, and the third synchronizer is engaged to the right; the engine power is transmitted through the engine The input end passes through the second clutch, the second input shaft, the first synchronizer, the fifth gear, the sixth gear, the first intermediate sleeve shaft, and the third synchronizer , the intermediate shaft, the fourteenth gear and the thirteenth gear are finally output to the transmission output shaft;

When the transmission is in the 7th gear state, the second synchronizer works, and the second synchronizer meshes to the left; the engine power passes through the first clutch, the first input shaft and the engine through the engine input end. the second synchronizer, which is finally output to the transmission output shaft;

When the transmission is in the 8th gear state, the first synchronizer, the second synchronizer and the fourth synchronizer work, the first synchronizer is engaged to the right, and the second synchronizer is engaged to the left , the fourth synchronizer meshes to the right; the engine power passes through the second clutch, the second input shaft, the first synchronizer, the fifth gear, the sixth The gear, the first intermediate sleeve shaft, the fourth synchronizer, the second intermediate sleeve shaft, the tenth gear, the ninth gear and the second synchronizer are finally output to the the transmission output shaft;

When the transmission is in the -1st gear state, the first synchronizer, the third synchronizer and the fourth synchronizer work, the first synchronizer is engaged to the right, and the third synchronizer is to the left The fourth synchronizer is engaged to the left; the engine power is input to the transmission module through the first clutch and the first input shaft through the engine input end, and then passes through the seventh gear and the idler in turn. , the second and eighth gears, the fourth synchronizer, the first intermediate sleeve shaft, the sixth gear, the fifth gear, the first synchronizer, the second input shaft , the first gear, the second gear, the third synchronizer, the intermediate shaft, the fourteenth gear and the thirteenth gear are finally output to the transmission output shaft.

The above-mentioned eight forward gears refer to 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, 6th gear, 7th gear and 8th gear.

The above-mentioned reverse gear refers to -1 gear.

Further, the eight-speed dual-clutch transmission realizes eight forward gears and one reverse gear through seven pairs of gears.

Compared with the prior art, the present invention has the following advantages:

1. The eight-speed dual-clutch transmission provided by the present invention, through the reasonable arrangement of gears and synchronizers, makes the transmission compact in structure and has a high reusability of the gear mechanism, thereby meeting the design requirements of lightweight and compact; six pairs of A forward gear pair, one reverse gear pair, four synchronizers, and eight powershift gears are provided.

2. In the eight-speed dual-clutch transmission provided by the present invention, the main case of the transmission adopts a two-shaft arrangement similar to the manual transmission of a commercial vehicle, and the process inheritance is good.

3. The eight-speed dual-clutch transmission provided by the present invention includes a direct gear and an overspeed gear, which is beneficial to increase the fuel economy of the vehicle.

4. The eight-speed dual-clutch transmission provided by the present invention has no power interruption when switching between all gears, and can realize power shifting of all gears.

To sum up, the application of the technical solution of the present invention can solve the problem that the multi-speed dual-clutch transmission in the prior art is too large in volume and weight, which leads to the problem that it cannot be arranged on the vehicle.

Based on the above reasons, the present invention can be widely promoted in the fields of vehicle transmission and the like.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram of the transmission of the eight-speed dual-clutch transmission of the present invention.

FIG. 2 is a power flow diagram of the first gear of the transmission in the present invention.

FIG. 3 is a power flow diagram of the second gear of the transmission in the present invention.

FIG. 4 is a power flow diagram of the 3rd gear of the transmission in the present invention.

FIG. 5 is a power flow diagram of the 4th gear of the transmission in the present invention.

FIG. 6 is a power flow diagram of the 5th gear of the transmission in the present invention.

FIG. 7 is a power flow diagram of the 6th gear of the transmission in the present invention.

FIG. 8 is a power flow diagram of the 7th gear of the transmission in the present invention.

FIG. 9 is a power flow diagram of the eighth gear of the transmission in the present invention.

FIG. 10 is a power flow diagram of the transmission -1 gear in the present invention.

In the figure: 100, engine input end; 200, clutch module; 300, transmission module; 400, output end; 201, first clutch; 202, second clutch; 301, first gear; 302, second gear; 303, 304, the fourth gear; 305, the fifth gear; 306, the sixth gear; 307, the seventh gear; 308, the eighth gear; 309, the ninth gear; 310, the tenth gear; 311, the tenth a gear; 312, the twelfth gear; 313, the thirteenth gear; 314, the fourteenth gear; 315, the idler gear; 316, the first synchronizer; 317, the second synchronizer; 318, the third synchronizer; 319, the fourth synchronizer; 320, the first input shaft; 321, the second input shaft; 322, the output shaft; 323, the intermediate shaft; 324, the first intermediate sleeve shaft; 325, the second intermediate sleeve shaft.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of the embodiments of the present invention, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that, for convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only and not limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that the orientations indicated by orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientation words do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as a limitation on the scope of protection of the present invention: the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under its device or structure". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood to limit the scope of protection of the present invention.

Example 1

As shown in Figures 1-10, the present invention provides an eight-speed dual-clutch transmission. Through reasonable arrangement of gears and synchronizers, the structure of the transmission is compact, the reusability of the gear mechanism is improved, and it can meet the requirements of lightweight and compact transmission. Design requirements.

Referring to FIG. 1 , the dual clutch transmission includes: an engine input end 100 , a clutch module 200 , a transmission module 300 , and an output end 400 .

The clutch module 200 includes: a first clutch 201 and a second clutch 202;

The transmission module 300 includes: a first gear 301, a second gear 302, a third gear 303, a fourth gear 304, a fifth gear 305, a sixth gear 306, a seventh gear 307, an eighth gear 308, and a ninth gear 309, tenth gear 310, eleventh gear 311, twelfth gear 312, thirteenth gear 313, fourteenth gear 314, idler 315, first synchronizer 316, second synchronizer 317, third synchronizer 318, the fourth synchronizer 319, the first input shaft 320, the second input shaft 321, the output shaft 322, the intermediate shaft 323, the first intermediate sleeve shaft 324 and the second intermediate sleeve shaft 325;

The connection relationship is as follows: the first clutch 201 is connected with the first input shaft 320 , and the second clutch 202 is connected with the second input shaft 321 . The transmission adopts two shaft trains arranged in parallel, the two shaft trains are a first shaft train and a second shaft train, wherein the first input shaft 320, the second input shaft 321 and the transmission output shaft 322 are arranged in the first shaft train, the second shaft train The input shaft 321 is sleeved on the first input shaft 320; the intermediate shaft 323, the first intermediate sleeve shaft 324, the second intermediate sleeve shaft 325 are arranged in the second shaft system, the first intermediate sleeve shaft 324 and the second intermediate shaft The shaft sleeve shafts 325 are all sleeved on the intermediate shaft 323;

In the transmission module 300, the first input shaft 320 is sequentially connected to the first clutch 201, the seventh gear 307 and the ninth gear 309, wherein the first clutch 201, the seventh gear 307 and the ninth gear 309 are all fixedly connected to the first clutch 201, the seventh gear 307 and the ninth gear 309. On the input shaft 320; the second input shaft 321 is sequentially connected to the second clutch 202, the first gear 301, the third gear 303, the first synchronizer 316 and the fifth gear 305, wherein the second clutch 202, the first gear 301 and The first synchronizer 316 is fixedly connected to the second input shaft 321 , the third gear 303 and the fifth gear 305 are hollowly sleeved on the second input shaft 321 ; the output shaft 322 is sequentially connected to the second synchronizer 317 , the eleventh gear The gear 311 and the thirteenth gear 313, wherein the second synchronizer 317 and the thirteenth gear 313 are fixedly connected to the output shaft 322, and the eleventh gear 311 is idle on the output shaft 322; the intermediate shaft 323 is connected to the second The gear 302 , the third synchronizer 318 , the first intermediate sleeve shaft 324 , the second intermediate sleeve shaft 325 and the fourteenth gear 314 , wherein the third synchronizer 318 and the fourteenth gear 314 are fixedly connected to the intermediate shaft 323 , the second gear 302 is idle on the intermediate shaft 323; the first intermediate sleeve shaft 324 is sequentially connected to the fourth gear 304, the sixth gear 306, the eighth gear 308 and the fourth synchronizer 319, wherein the fourth gear 304 , the sixth gear 306 and the fourth synchronizer 319 are fixedly connected to the first intermediate sleeve shaft 324, the eighth gear 308 is empty sleeved on the first intermediate sleeve shaft 324; the second intermediate sleeve shaft 325 is sequentially connected to the first intermediate sleeve shaft 324. The tenth gear 310 and the twelfth gear 312, wherein the tenth gear 310 and the twelfth gear 312 are fixedly connected to the second intermediate sleeve shaft 325;

In the transmission module 300, the left side of the first synchronizer 316 meshes with the third gear 303, the right side meshes with the fifth gear 305; the left side of the second synchronizer 317 meshes with the first input shaft 320, and the right side meshes with the eleventh gear 311 meshes; the left side of the third synchronizer 318 meshes with the second gear 302, and the right side meshes with the first intermediate shaft sleeve shaft 324; the left side of the fourth synchronizer 319 meshes with the eighth gear 308, and the right side meshes with the second intermediate shaft The sleeve shaft 325 is engaged. The first gear 301 meshes with the second gear 302, the third gear 303 meshes with the fourth gear 304, the fifth gear 305 meshes with the sixth gear 306, the seventh gear 307 meshes with the eighth gear 308 through the idler gear 315, and the ninth gear 307 meshes with the eighth gear 308. The gear 309 meshes with the tenth gear 310 , the eleventh gear 311 meshes with the twelfth gear 312 , and the thirteenth gear 313 meshes with the fourteenth gear 314 .

Example 2

The eight-speed dual-clutch transmission has eight forward gears and one reverse gear, specifically:

Referring to FIG. 2 , when the eight-speed dual-clutch transmission is in the 1st gear state, the first synchronizer 316 , the third synchronizer 318 and the fourth synchronizer 319 work, the first synchronizer 316 meshes to the right, and the third synchronizer 318 moves to the right. Left meshing, the fourth synchronizer 319 meshing to the right, the engine power is input to the transmission module 300 through the engine input end 100 through the first clutch 201 and the first input shaft 320, and then passes through the ninth gear 309, tenth gear 310, Fourth synchronizer 319, first intermediate sleeve shaft 324, sixth gear 306, fifth gear 305, first synchronizer 316, second input shaft 321, first gear 301, second gear 302, third synchronizer 318 , the intermediate shaft 323 , the fourteenth gear 314 and the thirteenth gear 313 are finally output to the transmission output shaft 322 .

Referring to FIG. 3 , when the eight-speed dual-clutch transmission is in the second gear state, the third synchronizer 318 works, and the third synchronizer 318 is engaged to the left; the engine power passes through the second clutch 202 and the second input shaft 321 through the engine input end 100 . , the first gear 301 , the second gear 302 , the third synchronizer 318 , the intermediate shaft 323 , the fourteenth gear 314 and the thirteenth gear 313 , and finally output to the transmission output shaft 322 .

Referring to FIG. 4 , when the eight-speed dual-clutch transmission is in the 3rd gear state, the second synchronizer 317 works, and the second synchronizer 317 is engaged to the right; the engine power passes through the first clutch 201 and the first input shaft 320 through the engine input end 100 . , the ninth gear 309 , the tenth gear 310 , the second intermediate sleeve shaft 325 , the twelfth gear 312 , the eleventh gear 311 and the second synchronizer 317 , and finally output to the transmission output shaft 322 .

5, when the eight-speed dual-clutch transmission is in the 4th gear state, the first synchronizer 316 and the third synchronizer 318 work, the first synchronizer 316 meshes to the left, and the third synchronizer 318 meshes to the right; the engine power is The engine input end 100 passes through the second clutch 202, the second input shaft 321, the first synchronizer 316, the third gear 303, the fourth gear 304, the first intermediate sleeve shaft 324, the third synchronizer 318, the intermediate shaft 323, The fourteenth gear 314 and the thirteenth gear 313 are finally output to the transmission output shaft 322 .

Referring to FIG. 6 , when the eight-speed dual-clutch transmission is in the 5th gear state, the third synchronizer 318 and the fourth synchronizer 319 work, the third synchronizer 318 meshes to the right, and the fourth synchronizer 319 meshes to the right; The engine input 100 passes through the first clutch 201 , the first input shaft 320 , the ninth gear 309 , the tenth gear 310 , the fourth synchronizer 319 , the first intermediate sleeve shaft 324 , the third synchronizer 318 , and the intermediate shaft 323 , The fourteenth gear 314 and the thirteenth gear 313 are finally output to the transmission output shaft 322 .

Referring to FIG. 7 , when the eight-speed dual-clutch transmission is in the 6th gear state, the first synchronizer 316 and the third synchronizer 318 work, the first synchronizer 316 meshes to the right, and the third synchronizer 318 meshes to the right; The engine input end 100 passes through the second clutch 202, the second input shaft 321, the first synchronizer 316, the fifth gear 305, the sixth gear 306, the first intermediate sleeve shaft 324, the third synchronizer 318, the intermediate shaft 323, The fourteenth gear 314 and the thirteenth gear 313 are finally output to the transmission output shaft 322 .

Referring to FIG. 8 , when the eight-speed dual-clutch transmission is in the 7th gear state, the second synchronizer 317 works, and the second synchronizer 317 is engaged to the left; the engine power passes through the first clutch 201 and the first input shaft 320 through the engine input end 100 . , the second synchronizer 317 and finally output to the transmission output shaft 322 .

Referring to FIG. 9 , when the eight-speed dual-clutch transmission is in the eighth gear state, the first synchronizer 316 , the second synchronizer 317 and the fourth synchronizer 319 work, the first synchronizer 316 meshes to the right, and the second synchronizer 317 moves to the right. The left meshes, the fourth synchronizer 319 meshes to the right; the engine power passes through the engine input end 100 through the second clutch 202, the second input shaft 321, the first synchronizer 316, the fifth gear 305, the sixth gear 306, the first intermediate The sleeve shaft 324 , the fourth synchronizer 319 , the second intermediate sleeve shaft 325 , the tenth gear 310 , the ninth gear 309 and the second synchronizer 317 are finally output to the transmission output shaft 322 .

Referring to FIG. 10 , when the eight-speed dual-clutch transmission is in the -1st gear state, the first synchronizer 316 , the third synchronizer 318 and the fourth synchronizer 319 work, the first synchronizer 316 is engaged to the right, and the third synchronizer 318 Meshing to the left, the fourth synchronizer 319 meshing to the left; the engine power is input to the transmission module 300 through the engine input end 100 through the first clutch 201 and the first input shaft 320, and then passes through the seventh gear 307, the idler 315, the eighth Gear 308, fourth synchronizer 319, first intermediate sleeve shaft 324, sixth gear 306, fifth gear 305, first synchronizer 316, second input shaft 321, first gear 301, second gear 302, The three synchronizers 318 , the intermediate shaft 323 , the fourteenth gear 314 and the thirteenth gear 313 are finally output to the transmission output shaft 322 .

The working elements of each gear of the transmission are shown in Table 1:

Table 1 The working elements of each gear of the transmission

In Table 1, K1 refers to the first clutch 201, K2 refers to the second clutch 202, A refers to the left side engagement of the first synchronizer 316, B refers to the right side engagement of the first synchronizer 316, and C refers to the second synchronizer 317 The left side is engaged, D means the right side of the second synchronizer 317 is engaged, E means the left side of the third synchronizer 318 is engaged, F means the right side of the third synchronizer 318 is engaged, and G means the left side of the fourth synchronizer 319 Engaged, H means the right side of the fourth synchronizer 319 is engaged.

Example 3

Describe the powershift process of this transmission:

1st gear to 2nd gear shift process:

Before shifting, the transmission is in the 1st gear state, the first clutch 201 is engaged, the first synchronizer 316 is engaged to the right, the third synchronizer 318 is engaged to the left, and the fourth synchronizer 319 is engaged to the right, and the power flow is shown in FIG. 2 . When shifting gears, there is no need to operate the synchronizer; during the shifting process, the first clutch 201 is disengaged and the second clutch 202 is engaged; after the shifting is completed, the first synchronizer 316 and the fourth synchronizer 319 no longer work, and the third synchronizer The engine 318 continues to work, the engine outputs power, and its power flow is shown in FIG. 3 .

2nd gear to 3rd gear shift process:

Before shifting, the transmission is in the 2nd gear state, the second clutch 202 is engaged, the third synchronizer 318 is engaged to the left, and its power flow is shown in Figure 3; Meshing to the right; during the shifting process, the second clutch 202 is disengaged, and the first clutch 201 is engaged; after the shifting is completed, the third synchronizer 318 no longer works, and the second synchronizer 317 is switched to work, the engine outputs power, and its power flow As shown in Figure 4.

3rd gear to 4th gear shift process:

Before shifting, the transmission is in the 3rd gear state, the first clutch 201 is engaged, and the second synchronizer 317 is engaged to the right; its power flow is shown in Figure 4; When the gear is shifted to the left, the third synchronizer 318 is engaged to the right; during the shifting process, the first clutch 201 is disengaged and the second clutch 202 is engaged; The third synchronizer 318 works, the engine outputs power, and its power flow is shown in FIG. 5 .

Shifting process from 4th to 5th gear:

Before shifting, the transmission is in the 4th gear state, the second clutch 202 is engaged, the left side of the first synchronizer 316 is engaged, and the third synchronizer 318 is engaged on the right side, and the power flow is shown in FIG. 5 . When shifting gears, pre-gear 5th gear first, and engage the right side of the fourth synchronizer 319; during the shifting process, the second clutch 202 is disengaged and the first clutch 201 is engaged; after the gear shifting is completed, the first synchronizer 316 will no longer work , the third synchronizer 318 and the fourth synchronizer 319 work, the engine outputs power, and its power flow is shown in FIG. 6 .

Shifting process from 5th to 6th gear:

Before shifting, the transmission is in the 5th gear state, the first clutch 201 is engaged, the third synchronizer 318 is engaged to the right, and the fourth synchronizer 319 is engaged to the right, and its power flow is shown in Figure 6; 6th gear, the first synchronizer 316 is engaged to the right; during the shifting process, the first clutch 201 is disengaged and the second clutch 202 is engaged; after the shifting is completed, the fourth clutch 319 no longer works, and is converted into the first synchronizer 316 and the second clutch 202. The three synchronizers 318 work, the engine outputs power, and its power flow is shown in FIG. 7 .

Shifting process from 6 to 7 gears:

Before shifting, the transmission is in the 6th gear state, the second clutch 202 is engaged, the first synchronizer 316 is engaged to the right, the third synchronizer 318 is engaged to the right, and its power flow is shown in Figure 7; In 7th gear, the second synchronizer 317 is engaged to the left; during the shifting process, the second clutch 202 is disengaged and the first clutch 201 is engaged; after the shifting is completed, the first synchronizer 316 and the third synchronizer 318 no longer work, and are converted into The second synchronizer 317 operates, and its power flow is shown in FIG. 8 .

Shifting process from 7 to 8 gears:

Before shifting, the transmission is in the 7th gear state, the first clutch 201 is engaged, the second synchronizer 317 is engaged to the left, and its power flow is shown in Figure 8; Right engagement, the fourth synchronizer 319 is engaged to the right; during the shifting process, the first clutch 201 is disengaged, and the second clutch 202 is engaged; after the shifting is completed, the first synchronizer 316, the second synchronizer 317 and the fourth synchronizer 319 works, and its power flow is shown in Figure 9.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (2)

1. An eight-speed dual-clutch transmission, comprising: an engine input end (100), a clutch module (200), a transmission module (300) and an output end (400); The clutch module (200) includes: a first clutch (201) and a second clutch (202); The transmission module (300) includes: a first gear (301), a second gear (302), a third gear (303), a fourth gear (304), a fifth gear (305), and a sixth gear (306) , seventh gear (307), eighth gear (308), ninth gear (309), tenth gear (310), eleventh gear (311), twelfth gear (312), thirteenth gear ( 313), fourteenth gear (314), idler gear (315), first synchronizer (316), second synchronizer (317), third synchronizer (318), fourth synchronizer (319), an input shaft (320), a second input shaft (321), an output shaft (322), an intermediate shaft (323), a first intermediate sleeve shaft (324) and a second intermediate sleeve shaft (325); The first clutch (201) is connected with the first input shaft (320), and the second clutch (202) is connected with the second input shaft (321); The transmission adopts two shaft systems arranged in parallel, and the two shaft systems are a first shaft system and a second shaft system, wherein the first input shaft (320), the second input shaft (321) and the transmission output shaft ( 322) is arranged in the first shaft system, the second input shaft (321) is sleeved on the first input shaft (320); the intermediate shaft (323), the first intermediate shaft sleeve shaft (324) ) and the second intermediate sleeve shaft (325) are arranged in the second shaft system, and both the first intermediate sleeve shaft (324) and the second intermediate sleeve shaft (325) are sleeved on the intermediate shaft ( 323) on; The first clutch (201), the seventh gear (307) and the ninth gear (309) are all fixedly connected to the first input shaft (320); the second clutch (202), the first gear (309) 301) and the first synchronizer (316) are fixedly connected to the second input shaft (321), and the third gear (303) and the fifth gear (305) are hollowly sleeved on the second input shaft ( 321); the second synchronizer (317) and the thirteenth gear (313) are fixedly connected to the output shaft (322), and the eleventh gear (311) is sleeved on the output shaft ( 322); the third synchronizer (318) and the fourteenth gear (314) are fixedly connected to the intermediate shaft (323), and the second gear (302) is hollowly sleeved on the intermediate shaft (323) ); the fourth gear (304), the sixth gear (306) and the fourth synchronizer (319) are all fixedly connected to the first intermediate sleeve shaft (324), the eighth gear (308) ) is sleeved on the first intermediate sleeve shaft (324); the tenth gear (310) and the twelfth gear (312) are fixedly connected to the second intermediate sleeve shaft (325); The left side of the first synchronizer (316) is meshed with the third gear (303), and the right side is meshed with the fifth gear (305); the left side of the second synchronizer (317) is meshed with the third gear (305). An input shaft (320) is meshed with the eleventh gear (311) on the right side; the third synchronizer (318) is meshed with the second gear (302) on the left side, and the right side with the first gear (302). An intermediate sleeve shaft (324) meshes; the left side of the fourth synchronizer (319) meshes with the eighth gear (308), and the right side meshes with the second intermediate sleeve shaft (325); the The first gear (301) meshes with the second gear (302), the third gear (303) meshes with the fourth gear (304), and the fifth gear (305) meshes with the sixth gear (306) meshes, the seventh gear (307) meshes with the eighth gear (308) through the idler gear (315), and the ninth gear (309) meshes with the tenth gear (310) , the eleventh gear (311) meshes with the twelfth gear (312), and the thirteenth gear (313) meshes with the fourteenth gear (314). 2. The eight-speed dual-clutch transmission according to claim 1, wherein the eight-speed dual-clutch transmission is provided with eight forward gears and one reverse gear, which are respectively: When the transmission is in the first gear state, the first synchronizer (316), the third synchronizer (318) and the fourth synchronizer (319) work, and the first synchronizer (316) moves to right engagement, the third synchronizer (318) engages leftward, and the fourth synchronizer (319) engages rightward; the engine power passes through the first clutch (201) and the engine input end (100) through the first clutch (201) and After the first input shaft (320) is input to the transmission module (300), it sequentially passes through the ninth gear (309), the tenth gear (310), the fourth synchronizer (319), and the The first intermediate sleeve shaft (324), the sixth gear (306), the fifth gear (305), the first synchronizer (316), the second input shaft (321), the the first gear (301), the second gear (302), the third synchronizer (318), the intermediate shaft (323), the fourteenth gear (314) and the thirteenth a gear (313), which is finally output to the transmission output shaft (322); When the transmission is in the 2nd gear state, the third synchronizer (318) works, and the third synchronizer (318) engages to the left; the engine power passes through the second clutch through the engine input end (100). (202), the second input shaft (321), the first gear (301), the second gear (302), the third synchronizer (318), the intermediate shaft (323), the fourteenth gear (314) and the thirteenth gear (313) are finally output to the transmission output shaft (322); When the transmission is in the 3rd gear state, the second synchronizer (317) works, and the second synchronizer (317) is engaged to the right; the engine power passes through the first clutch through the engine input end (100). (201), the first input shaft (320), the ninth gear (309), the tenth gear (310), the second intermediate sleeve shaft (325), the twelfth gear (312), the eleventh gear (311) and the second synchronizer (317), and finally output to the transmission output shaft (322); When the transmission is in the 4th gear state, the first synchronizer (316) and the third synchronizer (318) work, the first synchronizer (316) meshes to the left, and the third synchronizer ( 318) meshing to the right; the engine power passes through the engine input end (100) through the second clutch (202), the second input shaft (321), the first synchronizer (316), the first The third gear (303), the fourth gear (304), the first intermediate shaft (324), the third synchronizer (318), the intermediate shaft (323), the fourteenth The gear (314) and the thirteenth gear (313) are finally output to the transmission output shaft (322); When the transmission is in the 5th gear state, the third synchronizer (318) and the fourth synchronizer (319) work, the third synchronizer (318) is engaged to the right, and the fourth synchronizer ( 319) meshing to the right; the engine power passes through the first clutch (201), the first input shaft (320), the ninth gear (309), the tenth gear through the engine input end (100) Gear (310), the fourth synchronizer (319), the first intermediate sleeve shaft (324), the third synchronizer (318), the intermediate shaft (323), the fourteenth The gear (314) and the thirteenth gear (313) are finally output to the transmission output shaft (322); When the transmission is in the 6th gear state, the first synchronizer (316) and the third synchronizer (318) work, the first synchronizer (316) is engaged to the right, and the third synchronizer ( 318) meshing to the right; the engine power passes through the engine input end (100) through the second clutch (202), the second input shaft (321), the first synchronizer (316), the first Fifth gear (305), the sixth gear (306), the first intermediate shaft (324), the third synchronizer (318), the intermediate shaft (323), the fourteenth The gear (314) and the thirteenth gear (313) are finally output to the transmission output shaft (322); When the transmission is in the 7th gear state, the second synchronizer (317) works, and the second synchronizer (317) engages to the left; the engine power passes through the first clutch through the engine input end (100). (201), the first input shaft (320) and the second synchronizer (317), and finally output to the transmission output shaft (322); When the transmission is in the 8th gear state, the first synchronizer (316), the second synchronizer (317) and the fourth synchronizer (319) work, and the first synchronizer (316) is directed to Right engagement, the second synchronizer (317) is engaged to the left, and the fourth synchronizer (319) is engaged to the right; the engine power passes through the second clutch (202), the second input shaft (321), the first synchronizer (316), the fifth gear (305), the sixth gear (306), the first intermediate sleeve shaft (324), the fourth synchronizer (319), the second intermediate sleeve shaft (325), the tenth gear (310), the ninth gear (309) and the second synchronizer (317), Finally output to the transmission output shaft (322); When the transmission is in the -1st gear state, the first synchronizer (316), the third synchronizer (318) and the fourth synchronizer (319) work, and the first synchronizer (316) Meshing to the right, the third synchronizer (318) meshes to the left, and the fourth synchronizer (319) meshes to the left; the engine power passes through the first clutch (201) through the engine input end (100) After being input to the transmission module (300) with the first input shaft (320), it passes through the seventh gear (307), the idler gear (315), the second and eighth gears (308), the the fourth synchronizer (319), the first intermediate sleeve shaft (324), the sixth gear (306), the fifth gear (305), the first synchronizer (316), the The second input shaft (321), the first gear (301), the second gear (302), the third synchronizer (318), the intermediate shaft (323), the fourteenth gear (314) and the thirteenth gear (313) are finally output to the transmission output shaft (322).

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