CN113685507A - Nine-gear double-clutch transmission and vehicle - Google Patents
Nine-gear double-clutch transmission and vehicle Download PDFInfo
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- CN113685507A CN113685507A CN202010421780.2A CN202010421780A CN113685507A CN 113685507 A CN113685507 A CN 113685507A CN 202010421780 A CN202010421780 A CN 202010421780A CN 113685507 A CN113685507 A CN 113685507A
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- 238000000926 separation method Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
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- 230000008878 coupling Effects 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/085—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with more than one output shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/001—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion convertible for varying the gear-ratio, e.g. for selecting one of several shafts as the input shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0065—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising nine forward speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2048—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with seven engaging means
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Abstract
The invention provides a nine-gear double-clutch transmission and a vehicle, wherein the nine-gear double-clutch transmission comprises a second main reduction gear, a differential gear ring, a differential, a 4-gear driven gear, an 8-gear driven gear, a 3-gear driven gear, a 7-gear driven gear, a reverse idler gear, a second output shaft, an 6/8-gear driving gear, a 3-gear driving gear, an inner input shaft, a 5/7-gear driving gear, a reverse driving gear, a first output shaft, a reverse driven gear, a 5-gear driven gear, a transition gear, a 6-gear driven gear, a 2-gear driven gear, a first main reduction gear, a 2-gear driving gear, a 4-gear driving gear, a second clutch, a first clutch, an outer input shaft and a synchronizer. The nine-gear double-clutch transmission greatly shortens the whole length of the double-clutch transmission and can be applied to front-transverse front-drive vehicles.
Description
Technical Field
The invention belongs to the technical field of vehicle transmissions, and particularly relates to a nine-gear double-clutch transmission and a vehicle.
Background
The double-clutch type automatic transmission integrates two gearboxes and two clutches into a gearbox shell, two inner input shafts and two outer input shafts which are rotatably sleeved are respectively connected with one clutch, the two input shafts respectively transmit power of two gearbox speed groups, and a gear shifting program is completed by automatic switching between the two clutches, so that the continuity of the power in the gear shifting process can be realized, namely, the power is not interrupted in the gear shifting process, the defect of AMT gear shifting impact is overcome, the power of an engine can be always transmitted to wheels in the gear shifting process of a vehicle, the gear shifting is rapid and stable, the acceleration of the vehicle is ensured, and the rapid deceleration condition caused by gear shifting is not generated any more by the vehicle, and the running comfort of the vehicle is greatly improved. However, since the conventional double clutch type automatic transmission mostly uses dual output shafts or a single output shaft and uses a common drive gear or a linearly arranged gear train, its axial dimension is long, so that it is difficult to adopt the above-mentioned transmission for a vehicle such as a front transverse engine or a front wheel drive, particularly a small vehicle, because its installation space is limited, and it is difficult to work the engine in an optimum working area because of its few gears for shifting, thereby adversely affecting the power performance and economy of the whole vehicle.
There is a twin-clutch manual transmission which includes a first input shaft and a second input shaft to which engine rotation is selectively input via separate clutches. A first gearset associated with the first gearbox speed grouping is located between the countershaft and an aft end of the projecting first input shaft. A second gearset associated with a second gearbox speed grouping is located between the second input shaft and the layshaft. The gearbox realizes the speed reduction transmission between the input shaft and the output shaft through only one auxiliary shaft.
Therefore, the conventional double-clutch automatic transmission generally adopts a structural form of a single output shaft or double output shafts, and the whole length of the transmission is long, so that the transmission is difficult to apply to front-transverse front-drive vehicle types. Moreover, the structural form of the single output shaft or the double output shafts leads to that the existing double-clutch automatic transmission has a larger structure, and has fewer gears which can be arranged under the condition of the same transmission size, so that the engine is not beneficial to work in the best region.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the nine-gear double-clutch transmission and the vehicle are provided, aiming at the problems that the existing double-clutch automatic transmission is long in overall length and difficult to apply to front-transverse front-drive vehicle types.
In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a nine-gear dual clutch transmission, including a second main reduction gear, a differential gear ring, a differential, a 4-gear driven gear, an 8-gear driven gear, a 3-gear driven gear, a 7-gear driven gear, a reverse idler gear, a second output shaft, an 6/8-gear driving gear, a 3-gear driving gear, an inner input shaft, a 5/7-gear driving gear, a reverse driving gear, a first output shaft, a reverse driven gear, a 5-gear driven gear, a transition gear, a 6-gear driven gear, a 2-gear driven gear, a first main reduction gear, a 2-gear driving gear, a 4-gear driving gear, a second clutch, a first clutch, an outer input shaft, and a synchronizer;
the outer input shaft and the inner input shaft are coaxially nested, the inner input shaft is connected with a power source through a first clutch, the outer input shaft is connected with the power source through a second clutch, the 4-gear driving gear, the 2-gear driving gear and the 6/8-gear driving gear are sequentially fixed on the outer input shaft in a direction far away from the power source, and the 3-gear driving gear, the 5/7-gear driving gear and the reverse gear driving gear are sequentially fixed on the inner input shaft in a direction far away from the power source;
the first output shaft is sequentially sleeved with the 2-gear driven gear, the 6-gear driven gear, the transition gear, the 5-gear driven gear and the reverse gear driven gear in an empty manner in the direction away from the power source, the second output shaft is sequentially sleeved with the 4-gear driven gear, the 8-gear driven gear, the 3-gear driven gear, the 7-gear driven gear and the reverse gear idle gear in an empty manner in the direction away from the power source, the first main reduction gear is fixed on the first output shaft, and the second main reduction gear is fixed on the second output shaft; the 2-gear driving gear is meshed with the 2-gear driven gear, the 3-gear driving gear is meshed with the 3-gear driven gear and the transition gear at the same time, the 4-gear driving gear is meshed with the 4-gear driven gear, the 5/7-gear driving gear is meshed with the 5-gear driven gear and the 7-gear driven gear at the same time, the 6/8-gear driving gear is meshed with the 6-gear driven gear and the 8-gear driven gear at the same time, the reverse gear idler gear is meshed with the reverse gear driving gear and the reverse gear driven gear at the same time, and the differential gear ring is meshed with the first main reduction gear and the second main reduction gear at the same time;
a synchronizer for controlling engagement and disengagement of each idler gear with its shaft to achieve nine forward gears and reverse.
According to the nine-gear double-clutch transmission provided by the embodiment of the invention, improvement is carried out on the basis of the traditional manual transmission, so that the effect of a rotating shaft planetary gear type automatic transmission with a complex structure is achieved by a parallel shaft type structure with a simple structure, and the structure is more compact. Because the resources of the manual transmission are utilized to the maximum extent, the manufacturing cost can be greatly reduced, and the cost is lower than that of automatic transmissions such as AT, CVT and the like.
Through the bypassing mode, realize 1, 9 fender transmissions with other fender gear gears to cancel 1, 9 fender owner, driven gear, obtain more fender transmission with less gear, greatly shorten derailleur axial length, alleviate derailleur weight, practice thrift whole car cost. When the nine-gear double-clutch transmission is realized, the outer input shaft and the inner input shaft are provided with six driving gears in total, so that the external dimension of the nine-gear double-clutch transmission is not greatly different (even smaller) than that of the common six-gear and seven-gear transmissions, thereby being beneficial to the miniaturization of the transmission and the arrangement of front transverse front-drive vehicles.
Nine gears can be arranged on the premise of the same external dimension as that of a common six-gear and seven-gear transmission, so that the transmission ratio range is enlarged, the transmission ratio distribution is more reasonable, and the power performance and the transmission efficiency of the whole vehicle are obviously improved. The nine-gear double-clutch transmission has 9 forward gears, the speed ratio range is larger, the speed ratio distribution is more reasonable compared with the traditional six-gear transmission and seven-gear transmission, the engine can work in the optimal working range with more probability, and the power performance and the economical efficiency of the whole vehicle are improved.
In addition, the second output shaft is used as an idler shaft for reverse gear transmission, a special reverse gear shaft is saved, gear recycling is increased, weight is reduced, and cost is saved. The center distance between the input shaft and the two output shafts can be designed to be smaller, and the structure is more compact. Reverse gear transmission path is simple, has reduced gear engagement quantity, and the transmission is more steady, and efficiency is higher.
In another aspect, an embodiment of the present invention further provides a vehicle, which includes the nine-gear dual-clutch transmission.
Drawings
FIG. 1 is a frame diagram of a nine speed dual clutch transmission provided in accordance with an embodiment of the present invention.
The reference numbers in the drawings of the specification are as follows:
1. a second main reduction gear; 2. a differential ring gear; 3. a differential mechanism; 4. a 4-gear driven gear; 5. a first synchronizer; 6. a 8-gear driven gear; 7. a 3-gear driven gear; 8. a second synchronizer; 9. a 7-gear driven gear; 10. a reverse gear idler wheel; 11. a second output shaft; 12. 6/8 gear drive gear; 13. a 3-gear driving gear; 14. an inner input shaft; 15. 5/7 gear drive gear; 16. a reverse drive gear; 17. a first output shaft; 18. a reverse driven gear; 19. a third synchronizer; 20. a 5-gear driven gear; 21. a fourth synchronizer; 22. a transition gear; 23. a 6-gear driven gear; 24. a fifth synchronizer; 25. a 2-gear driven gear; 26. a first main reduction gear; 27. a 2-gear driving gear; 28. a 4-gear driving gear; 29. a power source; 30. a second clutch; 31. a first clutch; 32. an outer input shaft; 33. a hollow shaft.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a nine-speed dual clutch transmission according to an embodiment of the present invention includes a second main reduction gear 1, a differential ring gear 2, differentials 3, 4-speed driven gears 4, 8-speed driven gears 6, 3-speed driven gears 7, 7-speed driven gears 9, a reverse idle gear 10, a second output shaft 11, 6/8-speed driving gears 12, 3-speed driving gears 13, an inner input shaft 14, 5/7-speed driving gears 15, a reverse driving gear 16, a first output shaft 17, a reverse driven gear 18, a 5-speed driven gear 20, transition gears 22, 6-speed driven gears 23, 2-speed driven gears 25, a first main reduction gear 26, a 2-speed driving gear 27, a 4-speed driving gear 28, a second clutch 30, a first clutch 31, an outer input shaft 32, and a synchronizer. The power source 29 may be, for example, an engine, an electric motor, or a hybrid powertrain of an electric motor and an engine.
The outer input shaft 32 and the inner input shaft 14 are coaxially nested, the inner input shaft 14 is connected with a power source 29 through a first clutch 31, the outer input shaft 32 is connected with the power source 29 through a second clutch 30, the 4-gear driving gear 28, the 2-gear driving gear 27 and the 6/8-gear driving gear 12 are sequentially fixed on the outer input shaft 32 in a direction away from the power source 29, and the 3-gear driving gear 13, the 5/7-gear driving gear 15 and the reverse gear driving gear 16 are sequentially fixed on the inner input shaft 14 in a direction away from the power source 29.
The first output shaft 17 is sequentially sleeved with the 2-gear driven gear 25, the 6-gear driven gear 23, the transition gear 22, the 5-gear driven gear 20 and the reverse gear driven gear 18 in an empty manner in a direction away from the power source 29, the second output shaft 11 is sequentially sleeved with the 4-gear driven gear 4, the 8-gear driven gear 6, the 3-gear driven gear 7, the 7-gear driven gear 9 and the reverse gear idler gear 10 in an empty manner in a direction away from the power source 29, the first main reduction gear 26 is fixed on the first output shaft 17, and the second main reduction gear 1 is fixed on the second output shaft 11; the engagement of 2 grades driving gear 27 and 2 grades driven gear 25, 3 grades driving gear 13 simultaneously with 3 grades driven gear 7 and transition gear 22 meshing, 4 grades driving gear 28 and 4 grades driven gear 4 meshing, 5/7 grades driving gear 15 simultaneously with 5 grades driven gear 20 and 7 grades driven gear 9 meshing, 6/8 grades driving gear 12 simultaneously with 6 grades driven gear 23 and 8 grades driven gear 6 meshing, reverse gear idler 10 simultaneously with reverse gear driving gear 16 and reverse gear driven gear 18 meshing, differential ring gear 2 simultaneously with first owner subtracts gear 26 and the meshing of second owner and subtracts gear 1.
A synchronizer for controlling engagement and disengagement of each idler gear with its shaft to achieve nine forward gears and reverse.
Thus, gears 6 and 8 share a common drive gear and gears 5 and 7 share a common drive gear. In addition, the 1-gear transmission and the 9-gear transmission are realized by other gear gears in a bypassing mode, so that 1-gear driving gears and 9-gear driven gears are eliminated, the using amount of the driving gears and the driven gears is reduced, the axial length of the transmission is shortened, and the weight of the transmission is reduced.
The outer input shaft 32 is a hollow shaft coaxially sleeved on the inner input shaft 14, and the inner input shaft 14 may be a solid shaft or a hollow shaft. The first output shaft 17, the second output shaft 11 and the external input shaft 32 are arranged in parallel at intervals to form a parallel shaft type structure. The power source 29 is coaxial with the inner input shaft 14.
In one embodiment, each idler gear may be idler on the shaft on which it is located by a bearing.
In one embodiment, the first clutch 31 and the second clutch 30 share a housing to be integrated into a dual clutch. To make the transmission space more compact.
In an embodiment, the nine-gear dual clutch transmission further includes a hollow shaft 33 coaxially sleeved on the first output shaft 17, the 6-gear driven gear 23 is fixed on the hollow shaft 33, and the transition gear 22 is loosely sleeved on the hollow shaft 33.
In one embodiment, the synchronizing device includes a first synchronizer 5, a second synchronizer 8, a third synchronizer 19, a fourth synchronizer 21 and a fifth synchronizer 24, the first synchronizer 5 and the second synchronizer 8 are disposed on the second output shaft 11, the third synchronizer 19 and the fifth synchronizer 24 are disposed on the first output shaft 17, and the fourth synchronizer 21 is disposed on the hollow shaft 33.
The first synchronizer 5 is positioned between the 4 th-gear driven gear 4 and the 8 th-gear driven gear 6 and is used for controlling the combination and the separation of the 4 th-gear driven gear 4 and the 8 th-gear driven gear 6 and the second output shaft 11; the second synchronizer 8 is positioned between the 3-gear driven gear 7 and the 7-gear driven gear 9 and is used for controlling the connection and disconnection of the 3-gear driven gear 7 and the 7-gear driven gear 9 and the second output shaft 11; the third synchronizer 19 is positioned between the 5 th driven gear 20 and the reverse driven gear 18 and is used for controlling the combination and the separation of the 5 th driven gear 20 and the reverse driven gear 18 and the first output shaft 17; the fourth synchronizer 21 is positioned between the 5 th driven gear 20 and the transition gear 22, and is used for controlling the connection and disconnection of the transition gear 22 and the hollow shaft 33; the fifth synchronizer 24 is located between the 6 th and 2 nd driven gears 23 and 25, and is used for controlling the engagement and disengagement of the 6 th and 2 nd driven gears 23 and 25 with the first output shaft 17.
The first synchronizer 5, the second synchronizer 8, the third synchronizer 19, the fourth synchronizer 21 and the fifth synchronizer 24 are all conventional synchronizers, and are controlled by a shifting fork to slide on a shaft.
The hubs of the first synchronizer 5 and the second synchronizer 8 are splined to the second output shaft 11; the hubs of the third synchronizer 19 and the fifth synchronizer 24 are splined to the first output shaft 17; the hub of the fourth synchronizer 21 is fixed to the 6 th-gear driven gear 23 by welding, spline, interference press-fitting, or integral molding.
However, it is also possible that the hub of the fourth synchronizer 21 is splined to the hollow shaft 33.
Nine forward gears and one reverse gear can be achieved by controlling the engagement and disengagement of the different states of the first synchronizer 5, the second synchronizer 8, the third synchronizer 19, the fourth synchronizer 21, the fifth synchronizer 24, the first clutch 31, and the second clutch 30.
Thus, when the nine-gear double-clutch transmission is realized, the outer input shaft 32 and the inner input shaft 14 have six driving gears in total, so that the external dimension of the nine-gear double-clutch transmission is not different from that of a common six-gear double-clutch transmission and a common seven-gear double-clutch transmission or even smaller, thereby being beneficial to the miniaturization of the transmission and the arrangement of a front transverse front-drive vehicle.
In a preferred embodiment, the first main reduction gear 26, the 2 nd driven gear 25, the fifth synchronizer 24, the 6 th driven gear 23, the transition gear 22, the fourth synchronizer 21, the 5 th driven gear 20, the third synchronizer 19 and the reverse driven gear 18 are sequentially arranged in a direction away from the power source 29. The second main reduction gear 1, the 4-gear driven gear 4, the first synchronizer 5, the 8-gear driven gear 6, the 3-gear driven gear 7, the second synchronizer 8, the 7-gear driven gear 9 and the reverse idle gear 10 are sequentially arranged in a direction away from the power source 29.
In a preferred embodiment, the 5/7-stage driving gear 15, the 5-stage driven gear 20 and the 7-stage driven gear 9 are coplanar gear sets, the 6/8-stage driving gear 12, the 6-stage driven gear 23 and the 8-stage driven gear 6 are coplanar gear sets, the 3-stage driving gear 13, the 3-stage driven gear 7 and the transition gear 22 are coplanar gear sets, the reverse idler gear 10, the reverse driving gear 16 and the reverse driven gear 18 are coplanar gear sets, and the first main reduction gear 26, the second main reduction gear 1 and the differential ring gear 2 are coplanar gear sets. By configuring the co-planar gear sets, the axial size of the transmission can be reduced, reducing the bulk of the transmission.
In one embodiment, the inner input shaft 14 and the outer input shaft 32 are rotatably supported at both ends thereof by bearings, the first output shaft 17 is rotatably supported at both ends thereof by bearings, and the second output shaft 11 is rotatably supported at both ends thereof by bearings. To achieve stable support of the respective shafts.
In one embodiment, the 4 th gear driving gear 28, the 2 nd gear driving gear 27 and the 6/8 th gear driving gear 12 are fixed on the outer input shaft 32 by welding, spline connection, interference press-fitting or integral molding; the 3-gear driving gear 13, the 5/7-gear driving gear 15 and the reverse gear driving gear 16 are fixed on the inner input shaft 14 by welding, spline connection, interference press-fitting or integral molding.
The nine-gear dual clutch transmission of the above embodiment has the following power transmission in each gear (the power source 29 takes an engine as an example):
a first gear power transmission route: the fourth synchronizer 21 is coupled with the transition gear 22, the fifth synchronizer 24 is coupled with the 2 nd driven gear 25, the first clutch 31 is closed, the torque provided by the engine is transmitted to the inner input shaft 14 through the first clutch 31, the torque is transmitted to a transition gear 22 through a 3-gear driving gear 13 fixed on an inner input shaft 14, then transmitted to a 6-gear driven gear 23 through the combination of a fourth synchronizer 21 and the transition gear 22, then transmitted to an 6/8-gear driving gear 12 through the 6-gear driven gear 23, then transmitted to a 2-gear driving gear 27 through an outer input shaft 32 through a 6/8-gear driving gear 12, then transmitted to a 2-gear driven gear 25 through the 2-gear driving gear 27, and then transmitted to a first main reduction gear 26 on a first output shaft 17 through the combination of a fifth synchronizer 24 and the 2-gear driven gear 25, then transmitted to a differential ring gear 2, and finally output power through a differential 3.
A second-gear power transmission route: the fifth synchronizer 24 is engaged with the 2 nd driven gear 25, the second clutch 30 is closed, the torque provided by the engine is transmitted to the outer input shaft 32 through the second clutch 30, is transmitted to the 2 nd driven gear 25 through the 2 nd driving gear 27 fixed on the outer input shaft 32, is transmitted to the first main reduction gear 26 on the first output shaft 17 through the engagement of the fifth synchronizer 24 and the 2 nd driven gear 25, passes through the differential ring gear 2, and is finally output by the differential 3.
A third gear power transmission route: the second synchronizer 8 is combined with the 3 rd gear driven gear 7, the first clutch 31 is closed, the torque provided by the engine is transmitted to the inner input shaft 14 through the first clutch 31, is transmitted to the 3 rd gear driven gear 7 through the 3 rd gear driving gear 13 fixed on the inner input shaft 14, is transmitted to the second main reduction gear 1 on the second output shaft 11 through the combination of the second synchronizer 8 and the 3 rd gear driven gear 7, passes through the differential gear ring 2, and is finally output by the differential 3.
A fourth gear power transmission route: the first synchronizer 5 is combined with the 4-gear driven gear 4, the second clutch 30 is closed, the torque provided by the engine is transmitted to the outer input shaft 32 through the second clutch 30, is transmitted to the 4-gear driven gear 4 through the 4-gear driving gear 28 fixed on the outer input shaft 32, is transmitted to the second main reduction gear 1 on the second output shaft 11 through the combination of the first synchronizer 5 and the 4-gear driven gear 4, passes through the differential gear ring 2, and is finally output by the differential 3.
A fifth-gear power transmission route: the fourth synchronizer 21 is engaged with the 5 th driven gear 20, the first clutch 31 is closed, the torque provided by the engine is transmitted to the inner input shaft 14 through the first clutch 31, is transmitted to the 5 th driven gear 20 through the 5/7 th driving gear 15 fixed on the inner input shaft 14, is transmitted to the first main reduction gear 26 on the first output shaft 17 through the engagement of the fourth synchronizer 21 and the 5 th driven gear 20, passes through the differential ring gear 2, and is finally output by the differential 3.
A six-gear power transmission route: the fifth synchronizer 24 is engaged with the 6 th driven gear 23, the second clutch 30 is closed, the torque provided by the engine is transmitted to the outer input shaft 32 through the second clutch 30, is transmitted to the 6 th driven gear 23 through the 6/8 th driving gear 12 fixed on the outer input shaft 32, is transmitted to the first main reduction gear 26 on the first output shaft 17 through the engagement of the fifth synchronizer 24 and the 6 th driven gear 23, passes through the differential ring gear 2, and is finally output by the differential 3.
A seven-gear power transmission route: the second synchronizer 8 is engaged with the 7 th driven gear 9, the first clutch 31 is closed, the torque provided by the engine is transmitted to the inner input shaft 14 through the first clutch 31, is transmitted to the 7 th driven gear 9 through the 5/7 th driving gear 15 fixed on the inner input shaft 14, is transmitted to the second main reduction gear 1 on the second output shaft 11 through the engagement of the second synchronizer 8 and the 7 th driven gear 9, passes through the differential ring gear 2, and is finally output by the differential 3.
Eight-gear power transmission route: the first synchronizer 5 is combined with the 8 th driven gear 6, the second clutch 30 is closed, the torque provided by the engine is transmitted to the outer input shaft 32 through the second clutch 30, is transmitted to the 8 th driven gear 6 through the 6/8 th driving gear 12 fixed on the outer input shaft 32, is transmitted to the second main reduction gear 1 on the second output shaft 11 through the combination of the first synchronizer 5 and the 8 th driven gear 6, passes through the differential ring gear 2, and is finally output by the differential 3.
Nine-gear power transmission route: the fourth synchronizer 21 is coupled to the transition gear 22, the second synchronizer 8 is coupled to the 7 th driven gear 9, the second clutch 30 is closed, the torque provided by the engine is transmitted to the outer input shaft 32 through the second clutch 30, is transmitted to the 6 th driven gear 23 through the 6/8 th driving gear 12 fixed to the outer input shaft 32, is transmitted to the transition gear 22 through the coupling of the fourth synchronizer 21 and the transition gear 22, is transmitted to the 3 rd driving gear 13 through the transition gear 22, is transmitted to the 5/7 th driving gear 15 through the 3 rd driving gear 13, is transmitted to the second main reduction gear 1 on the second output shaft 11 through the coupling of the second synchronizer 8 and the 7 th driven gear 9, passes through the differential ring gear 2, and is finally output by the differential 3.
Reverse gear power transmission route: the third synchronizer 19 is engaged with the reverse driven gear 18, the first clutch 31 is closed, the torque provided by the engine is transmitted to the inner input shaft 14 through the first clutch 31, is transmitted to the reverse idler gear 10 through the reverse driving gear 16 fixed on the inner input shaft 14, is transmitted to the reverse driven gear 18 through the reverse idler gear 10, is transmitted to the first main reduction gear 26 on the first output shaft 17 through the engagement of the third synchronizer 19 and the reverse driven gear 18, passes through the differential ring gear 2, and is finally output by the differential 3.
The nine speed dual clutch transmission shift process of the present embodiment is as follows:
1-gear shift and 2-gear shift processes: in the 1-gear stage, the fourth synchronizer 21 is combined with the transition gear 22, and the fifth synchronizer 24 is combined with the 2-gear driven gear 25; the first clutch 31 is closed and the second clutch 30 is open; after the dual clutch transmission control system issues a 1-gear shift-2 command, the second clutch 30 is still in an open state at this time, i.e., neither the second clutch 30 nor the outer input shaft 32 transmits power; as the gear shifting process continues, the first clutch 31 is gradually opened while the second clutch 30 is gradually closed, and during the process, the clutches are always engaged, so that torque interruption does not occur; after the first clutch 31 is completely opened and the second clutch 30 is completely closed, the shifting process is ended. At this time, the first clutch 31 is in an open state, i.e., the first clutch 31 and the inner input shaft 14 do not transmit power, and the engine torque is transmitted to the 2 nd-speed driven gear 25 via the second clutch 30.
2-shift 3-shift process: in gear 2, the fifth synchronizer 19 is engaged with the 2 nd driven gear 25; the second clutch 30 is closed and the first clutch 31 is open; after the double-clutch transmission control system sends a 2-gear shifting and 3-gear shifting instruction, the gear shifting executing mechanism combines a second synchronizer 8 and a 3-gear driven gear 7 in advance; the first clutch 31 is still open at this time, i.e., neither the first clutch 31 nor the inner input shaft 14 transmits power; as the gear shifting process continues, the second clutch 30 is gradually opened, and at the same time, the first clutch 31 is gradually closed, and during the process, the clutches are always combined, so that torque interruption can not occur; after the second clutch 30 is fully open and the first clutch 31 is fully closed, the shifting process is ended. At this time, the second clutch 30 is in an open state, i.e., the second clutch 30 and the outer input shaft 32 do not transmit power, and the engine torque is transmitted to the 3 rd-speed driven gear 7 via the first clutch 31.
The other gears are shifted from each other similarly to the 1-gear and 2-gear shifting process, and are not described in detail.
According to the nine-gear double-clutch transmission provided by the embodiment of the invention, improvement is carried out on the basis of the traditional manual transmission, so that the effect of a rotating shaft planetary gear type automatic transmission with a complex structure is achieved by a parallel shaft type structure with a simple structure, and the structure is more compact. Because the resources of the manual transmission are utilized to the maximum extent, the manufacturing cost can be greatly reduced, and the cost is lower than that of automatic transmissions such as AT, CVT and the like.
Through the bypassing mode, realize 1, 9 fender transmissions with other fender gear gears to cancel 1, 9 fender owner, driven gear, obtain more fender transmission with less gear, greatly shorten derailleur axial length, alleviate derailleur weight, practice thrift whole car cost. When the nine-gear double-clutch transmission is realized, the outer input shaft and the inner input shaft are provided with six driving gears in total, so that the external dimension of the nine-gear double-clutch transmission is not greatly different (even smaller) than that of the common six-gear and seven-gear transmissions, thereby being beneficial to the miniaturization of the transmission and the arrangement of front transverse front-drive vehicles.
Nine gears can be arranged on the premise of the same external dimension as that of a common six-gear and seven-gear transmission, so that the transmission ratio range is enlarged, the transmission ratio distribution is more reasonable, and the power performance and the transmission efficiency of the whole vehicle are obviously improved. The nine-gear double-clutch transmission has 9 forward gears, the speed ratio range is larger, the speed ratio distribution is more reasonable compared with the traditional six-gear transmission and seven-gear transmission, the engine can work in the optimal working range with more probability, and the power performance and the economical efficiency of the whole vehicle are improved.
In addition, the second output shaft is used as an idler shaft for reverse gear transmission, a special reverse gear shaft is saved, gear recycling is increased, weight is reduced, and cost is saved. The center distance between the input shaft and the two output shafts can be designed to be smaller, and the structure is more compact. Reverse gear transmission path is simple, has reduced gear engagement quantity, and the transmission is more steady, and efficiency is higher.
In addition, the embodiment of the invention also provides a vehicle which comprises the nine-gear double-clutch transmission of the embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a nine grades of double clutch derailleur, a serial communication port, including second owner subtract gear (1), differential ring gear (2), differential mechanism (3), 4 grades of driven gear (4), 8 grades of driven gear (6), 3 grades of driven gear (7), 7 grades of driven gear (9), reverse gear idler (10), second output shaft (11), 6/8 grades of driving gear (12), 3 grades of driving gear (13), interior input shaft (14), 5/7 grades of driving gear (15), reverse gear driving gear (16), first output shaft (17), reverse gear driven gear (18), 5 grades of driven gear (20), transition gear (22), 6 grades of driven gear (23), 2 grades of driven gear (25), first owner subtracts gear (26), 2 grades of driving gear (27), 4 grades of driving gear (28), second clutch (30), first clutch (31), An outer input shaft (32) and a synchronizer;
the outer input shaft (32) and the inner input shaft (14) are coaxially nested, the inner input shaft (14) is connected with a power source (29) through a first clutch (31), the outer input shaft (32) is connected with the power source (29) through a second clutch (30), the 4-gear driving gear (28), the 2-gear driving gear (27) and the 6/8-gear driving gear (12) are sequentially fixed on the outer input shaft (32) in the direction far away from the power source (29), and the 3-gear driving gear (13), the 5/7-gear driving gear (15) and the reverse gear driving gear (16) are sequentially fixed on the inner input shaft (14) in the direction far away from the power source (29);
the first output shaft (17) is sequentially sleeved with the 2-gear driven gear (25), the 6-gear driven gear (23), the transition gear (22), the 5-gear driven gear (20) and the reverse gear driven gear (18) in an empty manner in a direction away from the power source (29), the second output shaft (11) is sequentially sleeved with the 4-gear driven gear (4), the 8-gear driven gear (6), the 3-gear driven gear (7), the 7-gear driven gear (9) and the reverse gear idler gear (10) in an empty manner in a direction away from the power source (29), the first main reduction gear (26) is fixed on the first output shaft (17), and the second main reduction gear (1) is fixed on the second output shaft (11); the 2-gear driving gear (27) is meshed with a 2-gear driven gear (25), the 3-gear driving gear (13) is meshed with the 3-gear driven gear (7) and a transition gear (22) simultaneously, the 4-gear driving gear (28) is meshed with a 4-gear driven gear (4), the 5/7-gear driving gear (15) is meshed with the 5-gear driven gear (20) and the 7-gear driven gear (9) simultaneously, the 6/8-gear driving gear (12) is meshed with the 6-gear driven gear (23) and the 8-gear driven gear (6) simultaneously, the reverse idler gear (10) is meshed with the reverse driving gear (16) and the reverse driven gear (18) simultaneously, and the differential gear ring (2) is meshed with the first main reduction gear (26) and the second main reduction gear (1) simultaneously;
a synchronizer for controlling engagement and disengagement of each idler gear with its shaft to achieve nine forward gears and reverse.
2. The nine-gear dual clutch transmission according to claim 1, characterized in that it further comprises a hollow shaft (33) coaxially fitted over the first output shaft (17), the 6-gear driven gear (23) being fixed to the hollow shaft (33), and the transition gear (22) being idly fitted over the hollow shaft (33).
3. The nine-speed double-clutch transmission according to claim 2, characterized in that the synchronizing means comprise a first synchronizer (5), a second synchronizer (8), a third synchronizer (19), a fourth synchronizer (21) and a fifth synchronizer (24), the first synchronizer (5) and the second synchronizer (8) being provided on the second output shaft (11), the third synchronizer (19) and the fifth synchronizer (24) being provided on the first output shaft (17), the fourth synchronizer (21) being provided on the hollow shaft (33);
the first synchronizer (5) is positioned between the 4-gear driven gear (4) and the 8-gear driven gear (6) and is used for controlling the combination and the separation of the 4-gear driven gear (4) and the 8-gear driven gear (6) and the second output shaft (11);
the second synchronizer (8) is positioned between the 3-gear driven gear (7) and the 7-gear driven gear (9) and is used for controlling the combination and the separation of the 3-gear driven gear (7) and the 7-gear driven gear (9) and the second output shaft (11);
the third synchronizer (19) is positioned between the 5-gear driven gear (20) and the reverse gear driven gear (18) and is used for controlling the combination and the separation of the 5-gear driven gear (20) and the reverse gear driven gear (18) and the first output shaft (17);
the fourth synchronizer (21) is positioned between the 5-gear driven gear (20) and a transition gear (22) and is used for controlling the connection and disconnection of the transition gear (22) and the hollow shaft (33);
the fifth synchronizer (24) is positioned between the 6-gear driven gear (23) and the 2-gear driven gear (25) and is used for controlling the connection and disconnection of the 6-gear driven gear (23) and the 2-gear driven gear (25) with the first output shaft (17).
4. The nine-speed dual-clutch transmission according to claim 3, characterized in that the first main reduction gear (26), the 2-speed driven gear (25), the fifth synchronizer (24), the 6-speed driven gear (23), the transition gear (22), the fourth synchronizer (21), the 5-speed driven gear (20), the third synchronizer (19) and the reverse driven gear (18) are sequentially arranged in a direction away from the power source (29);
the second main reduction gear (1), the 4-gear driven gear (4), the first synchronizer (5), the 8-gear driven gear (6), the 3-gear driven gear (7), the second synchronizer (8), the 7-gear driven gear (9) and the reverse gear idler (10) are sequentially arranged in the direction away from the power source (29).
5. Nine-speed double-clutch transmission according to claim 3, characterized in that the hubs of the first and second synchronizers (5, 8) are splined on the second output shaft (11);
the gear hubs of the third synchronizer (19) and the fifth synchronizer (24) are connected to the first output shaft (17) through splines;
the gear hub of the fourth synchronizer (21) is fixed on the 6-gear driven gear (23) in a welding, spline, interference press-fitting or integrated forming mode; alternatively, the hub of the fourth synchronizer (21) is splined to the hollow shaft (33).
6. The nine-speed dual-clutch transmission according to claim 1, characterized in that the 5/7-speed drive gear (15), the 5-speed driven gear (20), and the 7-speed driven gear (9) are co-planar gear sets, the 6/8-speed drive gear (12), the 6-speed driven gear (23), and the 8-speed driven gear (6) are co-planar gear sets, the 3-speed drive gear (13), the 3-speed driven gear (7), and the transition gear (22) are co-planar gear sets, the reverse idler gear (10), the reverse drive gear (16), and the reverse driven gear (18) are co-planar gear sets, and the first main reduction gear (26) and the second main reduction gear (1) and the differential ring gear (2) are co-planar gear sets.
7. The nine-speed dual-clutch transmission according to claim 3, wherein the first-speed power transmission route of the nine-speed dual-clutch transmission is as follows:
the fourth synchronizer (21) is combined with a transition gear (22), the fifth synchronizer (24) is combined with a 2-gear driven gear (25), the first clutch (31) is closed, the torque provided by the power source (29) is transmitted to the inner input shaft (14) through the first clutch (31), transmitted to the transition gear (22) through a 3-gear driving gear (13) fixed on the inner input shaft (14), transmitted to the 6-gear driven gear (23) through the combination of the fourth synchronizer (21) and the transition gear (22), transmitted to the 6/8-gear driving gear (12) through the 6-gear driven gear (23), transmitted to the 2-gear driving gear (27) through the outer input shaft 32 from the 6/8-gear driving gear (12), transmitted to the 2-gear driven gear (25) through the combination of the fifth synchronizer (24) and the 2-gear driven gear (25), and transmitted to the first gear through the combination of the fifth synchronizer (24) and the 2-gear driven gear (25) And a first main reduction gear (26) on the output shaft (17), passes through the differential gear ring (2) and finally is used for outputting power by the differential (3).
8. The nine-speed dual-clutch transmission according to claim 3, wherein a nine-speed power transmission route of the nine-speed dual-clutch transmission is as follows:
the fourth synchronizer (21) is combined with a transition gear (22), the second synchronizer (8) is combined with a 7-gear driven gear (9), the second clutch (30) is closed, the torque provided by the power source (29) is transmitted to an outer input shaft (32) through the second clutch (30), is transmitted to a 6-gear driven gear (23) through an 6/8-gear driving gear (12) fixed on the outer input shaft (32), is transmitted to the transition gear (22) through the combination of the fourth synchronizer (21) and the transition gear (22), is transmitted to a 3-gear driving gear (13) through the transition gear (22), is transmitted to a 5/7-gear driving gear (15) through the 3-gear driving gear (13), and is transmitted to a second main reducing gear (1) on a second output shaft (11) through the combination of the second synchronizer (8) and the 7-gear driven gear (9), then passes through the differential gear ring (2) and finally is output by the differential (3).
9. The nine-speed dual-clutch transmission according to claim 3, wherein the reverse power transmission route of the nine-speed dual-clutch transmission is as follows:
the third synchronizer (19) is combined with the reverse gear driven gear (18), the first clutch (31) is closed, the torque provided by the power source (29) is transmitted to the inner input shaft (14) through the first clutch (31), transmitted to the reverse gear idler gear (10) through the reverse gear driving gear (16) fixed on the inner input shaft (14), transmitted to the reverse gear driven gear (18) through the reverse gear idler gear (10), transmitted to the first main reduction gear (26) on the first output shaft (17) through the combination of the third synchronizer (19) and the reverse gear driven gear (18), transmitted to the differential gear ring (2) and finally output power through the differential (3).
10. A vehicle comprising a nine speed dual clutch transmission according to any one of claims 1 to 9.
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