CN102720805B - A kind of automatic transmission and comprise the vehicle of this automatic transmission - Google Patents
A kind of automatic transmission and comprise the vehicle of this automatic transmission Download PDFInfo
- Publication number
- CN102720805B CN102720805B CN201110077686.0A CN201110077686A CN102720805B CN 102720805 B CN102720805 B CN 102720805B CN 201110077686 A CN201110077686 A CN 201110077686A CN 102720805 B CN102720805 B CN 102720805B
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- gear
- clutch
- input shaft
- automatic transmission
- gear train
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Classifications
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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
- F16H3/12—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 means for synchronisation not incorporated in the clutches
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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
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
A kind of automatic transmission, comprise: the double clutch comprising first clutch and second clutch, first input shaft, second input shaft and output shaft, first input shaft is connected with first clutch, second input shaft is connected with second clutch through the first input shaft, this automatic transmission also comprises synchronizer, overrunning clutch and the reduction gears mechanism comprising the first gear train and the second gear train, first gear train comprises intermeshing first gear and the second gear, second gear train comprises intermeshing 3rd gear and the 4th gear, 3rd gear is arranged on the second input shaft by overrunning clutch, synchronizer is arranged on the second input shaft.Automatic transmission of the present invention and comprise the vehicle of this automatic transmission, overrunning clutch is provided with between the 3rd gear and the second input shaft, thus can anti-stopping power from output shaft through the transmission of the second gear train to the second input shaft, and then effectively reduce the wearing and tearing of double clutch, improve the working life of double clutch.
Description
Technical field
The present invention relates to a kind of automatic transmission and comprise the vehicle of this automatic transmission.
Background technique
At present, along with the fast development of trailer reversing automation, automotive transmission just presents rapid growth momentum.Present automatic gearbox mainly contains torque converter (AT), stepless speed variator (CVT) and the electric control mechanical speed changer (AMT) that transmission efficiency is high now.
In transmission efficiency and cost of production etc., be better than the AMT of AT and CVT, owing to having the advantage of high fuel economy required by automobile industry development, low emission and the existing manual transmission investment of production of protection, receive the attention of motor-dom.
But in the using process of AMT, find its shortcoming gradually: vehicle is in shift process, and when after clutch separation, the power of motor can not be delivered to wheel, causes power interruption, and driver has pause and transition in rhythm or melody sense, the power character that have impact on vehicle and the travelling comfort taken.
In order to head it off, need to control accurately shift process.Particularly in order to reduce the shock extent that shift process produces, the power assembly to power plant and speed changer are formed is needed to mate accurately in speed discrepancy, moment of torsion etc. and control.
DCT(dual-clutch transmission) appearance solve this problem.But in the shift process of DCT, the transmission of power is realized by the combination of synchronizer and sliding gear collar, handle complicated, if after gear switches, sliding gear collar and the synchronizer of a upper gear do not disconnect, and power can pass back to another input shaft, make clutch plate High Rotation Speed, not only consumed energy, and the wearing and tearing that can cause clutch, shorten the working life of clutch.
Summary of the invention
The present invention solves the existing dual-clutch transmission technical problem that easily causes double clutch to wear and tear, provide a kind of can available protecting double clutch automatic transmission and comprise the vehicle of this automatic transmission.
One aspect of the present invention provides a kind of automatic transmission, comprise: double clutch, first input shaft of hollow, second input shaft and output shaft, described double clutch comprises first clutch and second clutch, described first input shaft is connected with first clutch, described second input shaft is connected with described second clutch through the hollow space of described first input shaft, wherein, described automatic transmission also comprises synchronizer, overrunning clutch and reduction gears mechanism, described reduction gears mechanism comprises the first gear train and the second gear train, described first gear train comprises intermeshing first gear and the second gear, described first gear and the second gear are fixedly mounted on described first input shaft and output shaft respectively, described second gear train comprises intermeshing 3rd gear and the 4th gear, described 3rd gear is arranged on described second input shaft so that from the second input shaft to output shaft unidirectional delivery power by overrunning clutch, described 4th gear is fixedly mounted on described output shaft, described synchronizer to be arranged on described second input shaft and can with described 3rd gear synchronous.
Further, described overrunning clutch comprises inner ring and outer ring, when rotating speed lower than inner ring of the rotating speed of outer ring, overrunning clutch is in bonding state, when rotating speed higher than inner ring of the rotating speed of outer ring, overrunning clutch is in and surmounts state, and the inner ring of described overrunning clutch is fixed on described second input shaft, and described 3rd gear set is on the outer ring of described overrunning clutch.
Described output shaft is also installed with output gear.
Described double clutch is wet-type dual-clutch.
The velocity ratio of described first gear train is less than the velocity ratio of described second gear train.
When described first clutch is separated, second clutch in conjunction with time, described second gear train forms the first gear.
When described first clutch combines, when second clutch is separated, described first gear train forms the second gear.
When described first clutch is separated, second clutch in conjunction with time, if the power reverse of the second input shaft input, described synchronizer and the 3rd gear synchronous, described second gear train formation is reversed gear gear.
The present invention additionally provides a kind of vehicle on the other hand, comprise power source and differential mechanism, wherein, described vehicle also comprises above-mentioned automatic transmission, described power source is connected with the double clutch of described automatic transmission, and the output shaft of described automatic transmission is connected with described differential mechanism.
Further, described power source is motor.
Automatic transmission of the present invention and comprise the vehicle of this automatic transmission, overrunning clutch is provided with between the 3rd gear and the second input shaft, thus can anti-stopping power from output shaft through the transmission of the second gear train to the second input shaft, and then effectively reduce the wearing and tearing of double clutch, improve the working life of double clutch.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch of the automatic transmission that one embodiment of the present invention provides;
Fig. 2 is automatic transmission that one embodiment of the present invention provides state simplified schematic diagram when being in the first gear, and wherein, heavy line represents power transmission line;
Fig. 3 is speed changer that one embodiment of the present invention provides state simplified schematic diagram when being in the second gear, and wherein, heavy line represents power transmission line;
Fig. 4 is the state simplified schematic diagram that speed changer that one embodiment of the present invention provides is in when reversing gear gear, and wherein, heavy line represents power transmission line;
Fig. 5 is the structural representation sketch of the vehicle that one embodiment of the present invention provides.
Embodiment
In order to make technical problem solved by the invention, technological scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
According to one embodiment of the present invention, as shown in Figure 1, one aspect of the present invention provides a kind of automatic transmission, comprise: double clutch 1, first input shaft 4 of hollow, second input shaft 10 and output shaft 12, double clutch 1 comprises first clutch 3 and second clutch 2, first input shaft 4 is connected with first clutch 3, second input shaft 10 is connected with second clutch 2 through the hollow space of the first input shaft 4, wherein, this automatic transmission also comprises synchronizer 9, overrunning clutch 8 and reduction gears mechanism, reduction gears mechanism comprises the first gear train 6 and the second gear train 11, first gear train 6 comprises intermeshing first gear 5 and the second gear 15, first gear 5 and the second gear 15 are fixedly mounted on the first input shaft 4 and output shaft 12 respectively, second gear train 11 comprises intermeshing 3rd gear 7 and the 4th gear 14, 3rd gear 7 is arranged on the second input shaft 10 so that from the second input shaft 10 to output shaft 12 unidirectional delivery power by overrunning clutch 8, 4th gear 14 is fixedly mounted on output shaft 12, synchronizer 9 to be arranged on the second input shaft 10 and can be synchronous with the 3rd gear 7.
First gear 5 and the second gear 15 often engage, and the 3rd gear 7 and the 4th gear 14 often engage.
Double clutch 1 can select dry dual clutch or wet-type dual-clutch as required, two clutches are had in double clutch 1, i.e. first clutch 3 and second clutch 2, first clutch 3 and second clutch 2 alternately combine or are separated the transmission that can control power.
Synchronizer 9 is mainly used in synchronous with the 3rd gear 7, so that the second input shaft 10 can by the second gear train 11 to output shaft 12 transferring power.
According to one embodiment of the present invention, double clutch 1 is wet-type dual-clutch.
Further, overrunning clutch 8 comprises inner ring and outer ring, when rotating speed lower than inner ring of the rotating speed of outer ring, overrunning clutch 8 is in bonding state, when rotating speed higher than inner ring of the rotating speed of outer ring, overrunning clutch 8 is in and surmounts state, and the inner ring of overrunning clutch 8 is fixed on the second input shaft 10, and the 3rd gear 7 is sleeved on the outer ring of overrunning clutch 8.
The effect of overrunning clutch is that certain element can only be rotated by certain direction, locking in the other directions.Roller-type overrunning clutch and free wheeling sprag clutch is divided into according to the transmission of power device installed between inner ring and outer ring (as roller or voussoir) difference.Those skilled in the art can select the overrunning clutch of suitable type as required.
According to one embodiment of the present invention, when rotating speed lower than inner ring of the rotating speed of outer ring, overrunning clutch 8 is in bonding state, and power can be delivered to output shaft 12 from the second input shaft 10 by the second gear train 11; When rotating speed higher than inner ring of the rotating speed of outer ring, overrunning clutch 8 is in and surmounts state, and now, the power of output shaft 12 can not be delivered to the second input shaft 10.
For the ease of the output of power, preferably, output shaft 12 is also installed with output gear 13 so that will the Power output of automatic transmission be input to wheel (by realizations such as differential mechanisms).
In order to better protect double clutch 1, preferably, the velocity ratio of the first gear train 6 is less than the velocity ratio of the second gear train 11, and namely the first gear train 6 can form high gear, and the second gear train 11 can form low gear.1 is less than as the velocity ratio of the first gear train can be made; And the velocity ratio of the second gear train is greater than 1.Those skilled in the art rationally can arrange the velocity ratio of the first gear train 6 and the second gear train 11 as required thus determine the gear of vehicle.
When first clutch 3 is separated, second clutch 2 in conjunction with time, the second gear train 11 forms the first gear.
When first clutch 3 combines, when second clutch 2 is separated, the first gear train 6 forms the second gear.
When first clutch 3 is separated, second clutch 2 in conjunction with time, if the power reverse that the second input shaft 10 inputs, synchronizer 9 is synchronous with the 3rd gear 7, and the second gear train 11 formation is reversed gear gear.
Shift process below in conjunction with accompanying drawing detailed description automatic transmission of the present invention:
According to one embodiment of the present invention, as described in Figure 2, control first clutch 3 to be separated, second clutch 2 combines, power will be delivered to overrunning clutch 8 from second clutch 2 and the second input shaft 10, rotating speed due to the inner ring of overrunning clutch 8 is greater than the rotating speed of outer ring, output gear 13 place that power will be delivered to by overrunning clutch 8 and the second gear train 11 on output shaft 12.In the process, the second gear train 11 works formation first gear.
In order to better protect double clutch 1, preferably, the first gear train 6 is train of reduction gears, and namely the velocity ratio of the first gear train 6 is greater than 1.
When the first gear; because the second gear 15 is fixed on output shaft 12; second gear 15 can drive the first gear 5 to rotate; because the velocity ratio of the first gear train 6 is greater than 1; now; the rotating speed of the first gear 5 will be less than the rotating speed of the second gear 15, and the rotating speed of part that now namely the driven plate of first clutch 3 is connected with the first input shaft 4 will effectively reduce, thus is conducive to protecting first clutch 3.
According to one embodiment of the present invention, as shown in Figure 3, control first clutch 3 and combine, second clutch 2 is separated, the output gear 13 that power will be delivered to from first clutch 3, first input shaft 4 and the first gear train 6 on output shaft 12.In the process, the first gear train 6 works formation second gear.
When the second gear; because the 4th gear 14 is fixed on output shaft 12; 4th gear 14 can drive the 3rd gear 7 to rotate; now, the rotating speed of the outer ring of overrunning clutch 8 is higher than the rotating speed of inner ring, and overrunning clutch 8 is in and surmounts state; now; the power of output shaft 12 can not be delivered to the second input shaft 10, so second clutch 2 can not be driven rotation, so can available protecting second clutch 2.
Meanwhile, the first gear and the switching of the second gear only need control first clutch 3 and alternately combine with second clutch 2 and be separated, thus effectively reduce shift shock, shorten (or elimination) power interruption time, thus improve the riding comfort of vehicle.
According to one embodiment of the present invention, as shown in Figure 4, when being input to power reverse (can motor reversal be controlled as adopted the be used as power vehicle in source of motor) of this automatic transmission, control first clutch 3 to be separated, second clutch 2 combines, control synchro 9 is synchronous with the 3rd gear 7 simultaneously, the output gear 13 that power will be delivered to from second clutch 2, second input shaft 10, synchronizer 9 and the second gear train 11 on output shaft 12.In the process, the formation of working of the second gear train 11 is reversed gear gear.
When reversing gear gear; because the second gear 15 is fixed on output shaft 12; second gear 15 can drive the first gear 5 to rotate; because the velocity ratio of the first gear train 6 is greater than 1; now; the rotating speed of the first gear 5 will be less than the rotating speed of the second gear 15, and the rotating speed of part that now namely the driven plate of first clutch 3 is connected with the first input shaft 4 will effectively reduce, thus is conducive to protecting first clutch 3.
According to one embodiment of the present invention, as shown in Figure 5, the present invention additionally provides a kind of vehicle on the other hand, comprise power source 16 and differential mechanism 17, wherein, this vehicle also comprises above-mentioned automatic transmission, and power source 16 is connected with the double clutch 1 of automatic transmission, and the output shaft 12 of automatic transmission is connected with differential mechanism 17.
Power source 16 can select motor or motor to provide power as required, and power source 16 can be fixed together by various suitable mode such as weld, riveted joint etc. with double clutch 1.
Further, this power source 16 is motor.When motor reversal, double clutch 1 and synchronizer 9 can be controlled and realize reversing gear.
Output shaft 12 is connected with differential mechanism 17, more specifically, output shaft 12 is provided with output gear 13, and output gear 13 engages with the planet carrier (differential carrier) of differential mechanism 17 transmission realizing power.
Automatic transmission of the present invention and comprise the vehicle of this automatic transmission, overrunning clutch is provided with between the 3rd gear and the second input shaft, thus can anti-stopping power from output shaft through the transmission of the second gear train to the second input shaft, and then effectively reduce the wearing and tearing of double clutch especially second clutch, improve the working life of double clutch.
Meanwhile, the velocity ratio of the first gear train is greater than 1, when second gear driven the first pinion rotation, effectively can reduce the rotating speed of the first gear, thus reduces the rotating speed of first clutch driven plate, is conducive to the protection of first clutch.
So automatic transmission of the present invention and comprise the vehicle of this automatic transmission, can available protecting first clutch and second clutch, is conducive to the working life of improving double clutch.
In addition, in the handoff procedure of the first gear and the second gear, without the need to the participation of synchronizer, thus simplify shift control mode, also reduce the quality of automatic transmission simultaneously, simplify the structure, reduce and take up room.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an automatic transmission, comprise: double clutch, first input shaft of hollow, second input shaft and output shaft, described double clutch comprises first clutch and second clutch, described first input shaft is connected with first clutch, described second input shaft is connected with described second clutch through the hollow space of described first input shaft, it is characterized in that, described automatic transmission also comprises synchronizer, overrunning clutch and reduction gears mechanism, described reduction gears mechanism comprises the first gear train and the second gear train, described first gear train comprises intermeshing first gear and the second gear, described first gear and the second gear are fixedly mounted on described first input shaft and output shaft respectively, described second gear train comprises intermeshing 3rd gear and the 4th gear, described 3rd gear is arranged on described second input shaft so that from the second input shaft to output shaft unidirectional delivery power by overrunning clutch, described 4th gear is fixedly mounted on described output shaft, described synchronizer to be arranged on described second input shaft and can with described 3rd gear synchronous, the velocity ratio of described first gear train is less than the velocity ratio of described second gear train.
2. automatic transmission as claimed in claim 1, it is characterized in that, described overrunning clutch comprises inner ring and outer ring, when rotating speed lower than inner ring of the rotating speed of outer ring, overrunning clutch is in bonding state, and when rotating speed higher than inner ring of the rotating speed of outer ring, overrunning clutch is in and surmounts state, the inner ring of described overrunning clutch is fixed on described second input shaft, and described 3rd gear set is on the outer ring of described overrunning clutch.
3. automatic transmission as claimed in claim 1, is characterized in that, described output shaft is also installed with output gear.
4. automatic transmission as claimed in claim 1, it is characterized in that, described double clutch is wet-type dual-clutch.
5. automatic transmission as claimed in claim 1, is characterized in that, when described first clutch is separated, second clutch in conjunction with time, described second gear train forms the first gear.
6. automatic transmission as claimed in claim 5, is characterized in that, when described first clutch combines, when second clutch is separated, described first gear train forms the second gear.
7. automatic transmission as claimed in claim 5, is characterized in that, when described first clutch is separated, second clutch in conjunction with time, if the power reverse of the second input shaft input, described synchronizer and the 3rd gear synchronous, described second gear train forms the gear that reverses gear.
8. a vehicle, comprise power source and differential mechanism, it is characterized in that, described vehicle also comprises the automatic transmission in claim 1-7 described in any one, described power source is connected with the double clutch of described automatic transmission, and the output shaft of described automatic transmission is connected with described differential mechanism.
9. vehicle as claimed in claim 8, it is characterized in that, described power source is motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077686.0A CN102720805B (en) | 2011-03-30 | 2011-03-30 | A kind of automatic transmission and comprise the vehicle of this automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077686.0A CN102720805B (en) | 2011-03-30 | 2011-03-30 | A kind of automatic transmission and comprise the vehicle of this automatic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720805A CN102720805A (en) | 2012-10-10 |
| CN102720805B true CN102720805B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110077686.0A Active CN102720805B (en) | 2011-03-30 | 2011-03-30 | A kind of automatic transmission and comprise the vehicle of this automatic transmission |
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| CN (1) | CN102720805B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174815B (en) * | 2013-03-28 | 2015-09-16 | 合肥工业大学 | The double-clutch automatic gearbox of band reverse gear used for electric vehicle and parking locking mechanism |
| KR101755799B1 (en) * | 2015-07-01 | 2017-07-10 | 현대자동차주식회사 | Transmission for vehicle |
| RU172383U1 (en) * | 2016-07-01 | 2017-07-06 | Государственное бюджетное образовательное учреждение высшего профессионального образования Нижегородский государственный инженерно-экономический университет (НГИЭУ) | MECHANISM OF CHANGE OF TRANSMISSION |
| CN110005763A (en) * | 2017-12-29 | 2019-07-12 | 比亚迪股份有限公司 | Speed changer, power-driven system and vehicle |
| CN109990054A (en) * | 2017-12-29 | 2019-07-09 | 比亚迪股份有限公司 | Speed changer, power-driven system and vehicle |
| CN109356979A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of single clutch two-shift automatic variable speed device having reverse gear |
| CN109356980A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of no reverse gear third gear single-direction transmission two-shift automatic variable speed device |
| CN109340361A (en) * | 2018-11-19 | 2019-02-15 | 吉林省晟林汽车传动科技有限公司 | L formula gear shifting structure |
| CN109849643B (en) * | 2019-03-21 | 2021-08-13 | 浙江鑫可传动科技有限公司 | New energy vehicle retarder system |
| CN110182047A (en) * | 2019-06-13 | 2019-08-30 | 淮阴工学院 | A kind of transmission integrated system of electric powered motor |
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| CN102720805A (en) | 2012-10-10 |
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