CN202707955U - Electromobile, variable speed gear and variable speed gear control system - Google Patents
Electromobile, variable speed gear and variable speed gear control system Download PDFInfo
- Publication number
- CN202707955U CN202707955U CN 201220308525 CN201220308525U CN202707955U CN 202707955 U CN202707955 U CN 202707955U CN 201220308525 CN201220308525 CN 201220308525 CN 201220308525 U CN201220308525 U CN 201220308525U CN 202707955 U CN202707955 U CN 202707955U
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- gear
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Abstract
The utility model provides an electromobile, a variable speed gear and a variable speed gear control system. The variable speed gear disclosed by the utility model comprises a shell, a main reducing mechanism arranged inside the shell and a planetary gear reducing mechanism arranged at the input end of the main reducing mechanism; the planetary gear reducing mechanism comprises a planetary gear mechanism, wherein the planetary gear mechanism comprises a sun gear coupled with a motor, an inner gear ring sleeved at the outer side of the sun gear, a plurality of planetary gears arranged between the sun gear and the inner gear ring and a planetary carrier connected with the plurality of planetary gears and used for outputting power to the main reducing mechanism; the planetary gear reducing mechanism further comprises a brake and a clutch and is provided with a first gear and a second gear, wherein the first gear is used for enabling the inner gear ring to be locked on the shell of the variable speed gear to enable the planetary gear mechanism to output in a speed reducing manner when the brake is closed and the clutch is opened, and the second gear is used for enabling the inner gear ring and the sun gear to be locked to enable the planetary gear mechanism to integrally rotate when the brake is opened and the clutch is closed, therefore the transmission efficiency is improved.
Description
Technical field
The utility model relates to the speed change gear field, in particular to a kind of electric vehicle, speed change gear and speed change gear control system.
Background technique
Pure electric automobile adopts the gear of fixed speed ratio to connect the ransaxle of motor and automobile at present, rely on motor speed to change the variation that comes regulation speed fully, be difficult to make motor in best condition range, to be worked, can not give full play to the power of motor, power character and the Economy of car load are bad.
The model utility content
The utility model aims to provide electric vehicle, speed change gear and the speed change gear control system that improves transmission efficiency, with the equal not good problem of the speed change gear power character that solves fixed speed ratio and Economy.
The utility model provides a kind of speed change gear on the one hand, comprises housing, and is arranged on the main gear reducer structure and the planet gear reducing mechanism that is arranged on main gear reducer structure input end of enclosure interior; Planet gear reducing mechanism comprises planetary gears, and planetary gears comprises: sun gear is coupled with motor; Ring gear is set in the sun gear outside; A plurality of planet wheels are arranged between sun gear and the ring gear; And planet carrier, connect a plurality of planet wheels, and output power to the main gear reducer structure; Planet gear reducing mechanism also comprises break and clutch, and planet gear reducing mechanism has arrester close and clutch and opens and make ring gear locked on the housing of speed change gear and make slow down first grade of output of planetary gears; And break is opened and the clutch closure makes ring gear and sun gear locked and make the whole rotating second gear of planetary gears.
Further, the major and minor friction plate of clutch is separately positioned on sun gear and the ring gear.
Further, the major and minor friction plate of clutch is separately positioned on sun gear and the planet carrier.
Further, the major and minor friction plate of clutch is separately positioned on planet carrier and the ring gear.
Further, break and clutch are controlled by hydraulic control module.
Of the present utility modelly also provide on the other hand a kind of speed change gear control system be used to controlling aforesaid speed change gear, control system comprises transmission control module and the gear position sensor that is connected with transmission control module; Gear position sensor is for detection of the position of gear lever and produce position signal, transmission control module collection position signal and turning to according to position signal control motor.
Further, control system also comprises motor speed sensor and the vehicle speed sensor that is connected with transmission control module; Motor speed sensor is for detection of the rotating speed of motor and produce motor speed signal, and vehicle speed sensor is for detection of the speed of a motor vehicle and produce vehicle speed signal; Transmission control module gathers motor speed signal and vehicle speed signal and according to the hydraulic control module that is used for control break and clutch of motor speed signal and vehicle speed signal control speed change gear.
The utility model also provides a kind of electric vehicle, comprises motor and wheel and aforesaid speed change gear, and the sun gear of motor and speed change gear is of coupled connections, the output shaft of the main gear reducer structure of speed change gear and wheel coupled drive.
According to electric vehicle of the present utility model, speed change gear and speed change gear control system, by at main gear reducer structure input end planet gear reducing mechanism being set, when the break of planet gear reducing mechanism ring gear is locked on housing the time, planet gear reducing mechanism slows down and exports, namely be operated in bottom gear, thereby improve output torque.Planetary gears is whole to turn round when the clutch closure makes, i.e. the output of planet gear mechanism is identical with input speed, and speed change gear is operated in top gear.Control system is switched between top gear and bottom gear automatically according to motor speed and the speed of a motor vehicle, thereby raising transmission efficiency, high-torque demand in the time of can satisfying just startup of vehicle or climbing, high-revolving demand in the time of can satisfying high vehicle speeds again, thus improve transmission efficiency.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to speed change gear the first embodiment of the present utility model;
Fig. 2 is the structural representation according to speed change gear the second embodiment of the present utility model; And
Fig. 3 is the structural representation according to speed change gear the 3rd embodiment of the present utility model.
Embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figures 1 to 3, according to speed change gear of the present utility model, comprise housing 5, and be arranged on the main gear reducer structure 8 and the planet gear reducing mechanism that is arranged on main gear reducer structure input end of enclosure interior; Planet gear reducing mechanism comprises planetary gears, planetary gears comprises the sun gear 1 with motor 9 couplings, be set in the ring gear 3 in sun gear 1 outside, and be arranged on a plurality of planet wheels 2 between sun gear 1 and the ring gear 3, a plurality of planet wheels 2 are fixing by planet carrier 6, and planet carrier 6 also is connected with the input shaft of main gear reducer structure 8.Planet gear reducing mechanism also comprises break 4 and clutch 7, and planet gear reducing mechanism has break 4 closures and clutch 7 and opens and make ring gear 3 locked on the housing 5 of speed change gear and make slow down first grade of output of planetary gears; And break 4 is opened and clutch 7 closures make ring gear 3 and sun gear 1 locked and make the whole rotating second gear of planetary gears.
Speed change gear of the present utility model, by at main gear reducer structure input end planet gear reducing mechanism being set, when the break of planet gear reducing mechanism ring gear is locked on housing 5 time, the planet gear reducing mechanism output of slowing down, namely be operated in bottom gear, thereby improve output torque.Planetary gears is whole to turn round when the clutch closure makes, i.e. the output of planet gear mechanism is identical with input speed, and speed change gear is operated in top gear.Speed change gear is by detecting motor speed and the speed of a motor vehicle, thereby automatically between top gear and bottom gear, switch, high-torque demand in the time of can satisfying just startup of vehicle or climbing, high-revolving demand in the time of can satisfying high vehicle speeds again, thus improve transmission efficiency.
Locked between ring gear 3 and housing 5, be planet gear mechanism when being operated in bottom gear, sun gear 1 drives planet carriers 6 outputs by planet wheel 2, and the ring gear rotating speed is 0, output member planet carrier 6 is identical with turning to of input component sun gear 1, and input with the output speed ratio is
(z wherein
s, z
rBe respectively sun gear, the ring gear number of teeth), i
1＞1, planetary gears slows down and exports, and improves output torque.
As shown in Figure 1, the first embodiment according to speed change gear of the present utility model, the major and minor friction plate of clutch 7 is separately positioned on sun gear 1 and the ring gear 3, when clutch 7 closure, solar energy 1 is locked with ring gear 3, and nothing relatively rotates between the two, thereby make the planet wheel 2 that is arranged between solar energy 1 and the ring gear 3 can not rotation, the output speed of planet carrier is identical with the output speed of sun gear, and the reduction speed ratio of planetary gears is 1, i.e. the whole revolution of planet gear mechanism.
As shown in Figure 2, the second embodiment according to speed change gear of the present utility model, the major and minor friction plate of clutch is separately positioned on sun gear 1 and the planet carrier 6, when clutch 7 closure, solar energy 1 is locked with planet carrier 6, namely export and be connected direct connection, rotating speed is identical, and the reduction speed ratio of planetary gears is 1.
As shown in Figure 2, the 3rd embodiment according to speed change gear of the present utility model, the major and minor friction plate of clutch is separately positioned on planet carrier 6 and the ring gear 3, and when clutch 7 closure, planet carrier 6 is locked with ring gear 3, rotating speed is identical, thereby make between the planet wheel 2 that is arranged on the planet carrier 6 and the ring gear 3 without relatively rotating, so make sun gear can't and planet wheel 2 between can't produce relative rotation, cause the whole revolution of planetary gears, input is identical with the rotating speed of output, and reduction speed ratio is 1.
Preferably, break 4 and clutch 7 are controlled by hydraulic control module, thereby are convenient to opening and closure of automatic control clutch 7 and break 4.
The utility model also provides a kind of speed change gear control system for aforementioned speed change gear, and control system comprises transmission control module and the gear position sensor that is connected with transmission control module; Gear position sensor is for detection of the position of gear lever and produce position signal, transmission control module collection position signal and turning to according to position signal control motor.Such as forward gears motor forward; During reverse gear, motor reversal.
Control system also comprises motor speed sensor and the vehicle speed sensor that is connected with transmission control module; Motor speed sensor is for detection of the rotating speed of motor and produce motor speed signal, and vehicle speed sensor is for detection of the speed of a motor vehicle and produce vehicle speed signal; Transmission control module gathers motor speed signal and vehicle speed signal and according to motor speed signal and vehicle speed signal control hydraulic control module, opening and closure of hydraulic control module control break 4 and clutch 7, thus realize that speed change gear switches between bottom gear and top gear.
Take forward gears as example, work as vehicle launch, gear position sensor detects that current transmission control module collects the position signal that gear position sensor produces by march forward shelves conversion of neutral gear, thus the starting electrical machinery forward.Motor speed sensor and vehicle speed sensor detect respectively motor speed and the speed of a motor vehicle, and transmission control module is according to the speed of a motor vehicle and motor speed control hydraulic control module.Because just start, the speed of a motor vehicle is larger, needs moment larger, hydraulic control module control arrester close, clutch is opened, even speed change gear is operated in bottom gear, thereby provides larger moment for the automobile that just starts.When automobile continued to give it the gun, hydraulic control module control break was opened, and clutch is closed, and speed change gear enters into top gear by bottom gear.When vehicle operating during in reverse gear, except motor steering with forward gears is opposite, other control procedures and forward gears are similar, speed change gear also can be operated in bottom gear and top gear.
The utility model also provides a kind of electric vehicle, comprises motor and wheel and aforesaid speed change gear, and the sun gear of motor and speed change gear is of coupled connections, the output shaft of the main gear reducer structure of speed change gear and wheel coupled drive.Speed change gear selects to be operated in bottom gear or top gear automatically, thereby improves transmission efficiency.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
According to electric vehicle of the present utility model, speed change gear and speed change gear control system, by at main gear reducer structure input end planet gear reducing mechanism being set, when the break of planet gear reducing mechanism ring gear is locked on housing the time, planet gear reducing mechanism slows down and exports, namely be operated in bottom gear, thereby improve output torque.Planetary gears is whole to turn round when the clutch closure makes, i.e. the output of planet gear mechanism is identical with input speed, and speed change gear is operated in top gear.Control system is switched between top gear and bottom gear automatically according to motor speed and the speed of a motor vehicle, thereby raising transmission efficiency, high-torque demand in the time of can satisfying just startup of vehicle or climbing, high-revolving demand in the time of can satisfying high vehicle speeds again, thus improve transmission efficiency.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a speed change gear is characterized in that, comprises housing (5), and is arranged on the main gear reducer structure (8) of described enclosure interior and is arranged on the planet gear reducing mechanism of described main gear reducer structure input end;
Described planet gear reducing mechanism comprises planetary gears, and described planetary gears comprises:
Sun gear (1) is coupled with motor (9);
Ring gear (3) is set in described sun gear (1) outside;
A plurality of planet wheels (2) are arranged between described sun gear (1) and the described ring gear (3); And
Planet carrier (6) connects described a plurality of planet wheel (2), and outputs power to described main gear reducer structure (8);
Described planet gear reducing mechanism also comprises break (4) and clutch (7), and described planet gear reducing mechanism has described break (4) closure and described clutch (7) is opened first grade that makes the locked housing at described speed change gear of described ring gear (3) (5) that described planetary gears deceleration is exported; And described break (4) is opened and described clutch (7) closure makes described ring gear (3) and described sun gear (1) locked and make the whole rotating second gear of described planetary gears.
2. speed change gear according to claim 1 is characterized in that,
The major and minor friction plate of described clutch (7) is separately positioned on described sun gear (1) and the described ring gear (3).
3. speed change gear according to claim 1 is characterized in that,
The major and minor friction plate of described clutch (7) is separately positioned on described sun gear (1) and the described planet carrier (6).
4. speed change gear according to claim 1 is characterized in that,
The major and minor friction plate of described clutch (7) is separately positioned on described planet carrier (6) and the described ring gear (3).
5. each described speed change gear in 4 according to claim 1 is characterized in that,
Described break (4) and described clutch (7) are controlled by hydraulic control module.
6. speed change gear control system that is used for each described speed change gear of control claim 1 to 5,
It is characterized in that described control system comprises transmission control module and the gear position sensor that is connected with described transmission control module;
Described gear position sensor is for detection of the position of gear lever and produce position signal, and described transmission control module gathers described position signal and turning to according to described position signal control motor (9).
7. speed change gear control system according to claim 6 is characterized in that,
Described control system also comprises motor speed sensor and the vehicle speed sensor that is connected with described transmission control module;
Described motor speed sensor is for detection of the rotating speed of motor (9) and produce motor speed signal, and described vehicle speed sensor is for detection of the speed of a motor vehicle and produce vehicle speed signal;
Described transmission control module gathers described motor speed signal and described vehicle speed signal and controls the hydraulic control module that is used for controlling described break (4) and described clutch (7) of described speed change gear according to described motor speed signal and described vehicle speed signal.
8. electric vehicle, comprise motor and wheel, it is characterized in that, also comprise each described speed change gear in the claim 1 to 5, the sun gear of described motor and described speed change gear (1) is of coupled connections, the output shaft of the main gear reducer structure (8) of described speed change gear and described wheel coupled drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220308525 CN202707955U (en) | 2012-06-28 | 2012-06-28 | Electromobile, variable speed gear and variable speed gear control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220308525 CN202707955U (en) | 2012-06-28 | 2012-06-28 | Electromobile, variable speed gear and variable speed gear control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707955U true CN202707955U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220308525 Expired - Lifetime CN202707955U (en) | 2012-06-28 | 2012-06-28 | Electromobile, variable speed gear and variable speed gear control system |
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| CN (1) | CN202707955U (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705457A (en) * | 2012-06-29 | 2012-10-03 | 成都凯迈科技有限公司 | Variable-speed transmission device for electric automobile |
| CN103407436A (en) * | 2013-08-28 | 2013-11-27 | 江苏理工学院 | Electromagnetic control type air loss energy consumption removing and low-speed performance improving device for hydrodynamic retarder |
| CN103407435A (en) * | 2013-08-28 | 2013-11-27 | 江苏理工学院 | Hydraulic control type device capable of eliminating pumping loss and improving low-speed performance of hydraulic retarder |
| CN103438172A (en) * | 2013-08-31 | 2013-12-11 | 西南大学 | Planetary gear train two-gear speed control system |
| CN104044451A (en) * | 2013-03-15 | 2014-09-17 | E-Aam传动系统公司 | Axle assembly with torque distribution drive mechanism |
| CN104074934A (en) * | 2013-12-09 | 2014-10-01 | 华南理工大学 | Two-gear automatic speed changing system for electric automobile |
| CN104534037A (en) * | 2014-12-26 | 2015-04-22 | 北京航空航天大学 | Two-gear automatic transmission for pure electric vehicle |
| CN104803312A (en) * | 2015-04-29 | 2015-07-29 | 北京南车时代机车车辆机械有限公司 | Mechanical and hydraulic integrated dynamic compactor and driving system thereof |
| CN104948681A (en) * | 2015-06-16 | 2015-09-30 | 潍柴动力股份有限公司 | Speed changing device, speed changer and speed changing method of hydraulic engineering machinery |
| CN106090172A (en) * | 2016-08-08 | 2016-11-09 | 吉孚动力技术(中国)有限公司 | Electric motor car automatic gear-box |
| CN106090171A (en) * | 2016-08-08 | 2016-11-09 | 吉孚动力技术(中国)有限公司 | Electronic automatic gearbox for vehicle |
| CN106476605A (en) * | 2015-08-25 | 2017-03-08 | 博格华纳公司 | Electronic a11wheel drive |
| CN106523645A (en) * | 2016-12-23 | 2017-03-22 | 南京越博动力系统股份有限公司 | Transmission system of two-gear automatic transmission of electric automobile |
| CN106763614A (en) * | 2016-12-16 | 2017-05-31 | 湖南南方宇航高精传动有限公司 | A kind of multistage compact high-speed gear box with hydraulic clutch |
| CN106965671A (en) * | 2016-10-27 | 2017-07-21 | 蔚来汽车有限公司 | Pure electric automobile is with two shift transmission power assemblies |
| CN107091305A (en) * | 2017-04-01 | 2017-08-25 | 重庆电子工程职业学院 | Planetary transmission for electric automobile |
| CN107571726A (en) * | 2017-09-19 | 2018-01-12 | 陕西法士特齿轮有限责任公司 | High speed pure electric automobile external toothing variable ratio drive system |
| CN107588156A (en) * | 2017-09-19 | 2018-01-16 | 陕西法士特齿轮有限责任公司 | High speed pure electric automobile planetary gear variable ratio drive system |
| CN107606077A (en) * | 2017-10-26 | 2018-01-19 | 哈尔滨东安汽车发动机制造有限公司 | A kind of two gear power transmissions with Shuangzi planet row |
| CN108431454A (en) * | 2015-12-24 | 2018-08-21 | 戴姆勒股份公司 | Powertrain device with motor |
| CN109442014A (en) * | 2018-11-30 | 2019-03-08 | 浙江伊控动力系统有限公司 | Two speed transmission and method for changing speed for pure electric vehicle |
| CN110805667A (en) * | 2019-11-27 | 2020-02-18 | 安徽江淮汽车集团股份有限公司 | Transmission device, transmission system, and automobile |
| CN112253718A (en) * | 2020-01-14 | 2021-01-22 | 浙江钛兴新能源汽车有限公司 | Electric automobile speed reduction differential mechanism |
-
2012
- 2012-06-28 CN CN 201220308525 patent/CN202707955U/en not_active Expired - Lifetime
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705457A (en) * | 2012-06-29 | 2012-10-03 | 成都凯迈科技有限公司 | Variable-speed transmission device for electric automobile |
| CN104044451A (en) * | 2013-03-15 | 2014-09-17 | E-Aam传动系统公司 | Axle assembly with torque distribution drive mechanism |
| CN103407435B (en) * | 2013-08-28 | 2016-06-08 | 江苏理工学院 | Hydraulic controlling type is eliminated hydrodynamic retarding device sky and is damaged energy consumption and improve low speed performance devices |
| CN103407436A (en) * | 2013-08-28 | 2013-11-27 | 江苏理工学院 | Electromagnetic control type air loss energy consumption removing and low-speed performance improving device for hydrodynamic retarder |
| CN103407435A (en) * | 2013-08-28 | 2013-11-27 | 江苏理工学院 | Hydraulic control type device capable of eliminating pumping loss and improving low-speed performance of hydraulic retarder |
| CN103407436B (en) * | 2013-08-28 | 2016-07-06 | 江苏理工学院 | Electromagnetic control type eliminates Retarder sky and damages energy consumption and improve low-speed performance device |
| CN103438172A (en) * | 2013-08-31 | 2013-12-11 | 西南大学 | Planetary gear train two-gear speed control system |
| CN104074934A (en) * | 2013-12-09 | 2014-10-01 | 华南理工大学 | Two-gear automatic speed changing system for electric automobile |
| CN104534037A (en) * | 2014-12-26 | 2015-04-22 | 北京航空航天大学 | Two-gear automatic transmission for pure electric vehicle |
| CN104803312A (en) * | 2015-04-29 | 2015-07-29 | 北京南车时代机车车辆机械有限公司 | Mechanical and hydraulic integrated dynamic compactor and driving system thereof |
| CN104948681A (en) * | 2015-06-16 | 2015-09-30 | 潍柴动力股份有限公司 | Speed changing device, speed changer and speed changing method of hydraulic engineering machinery |
| CN106476605A (en) * | 2015-08-25 | 2017-03-08 | 博格华纳公司 | Electronic a11wheel drive |
| CN108431454A (en) * | 2015-12-24 | 2018-08-21 | 戴姆勒股份公司 | Powertrain device with motor |
| CN106090171A (en) * | 2016-08-08 | 2016-11-09 | 吉孚动力技术(中国)有限公司 | Electronic automatic gearbox for vehicle |
| CN106090172A (en) * | 2016-08-08 | 2016-11-09 | 吉孚动力技术(中国)有限公司 | Electric motor car automatic gear-box |
| CN106965671A (en) * | 2016-10-27 | 2017-07-21 | 蔚来汽车有限公司 | Pure electric automobile is with two shift transmission power assemblies |
| CN106763614A (en) * | 2016-12-16 | 2017-05-31 | 湖南南方宇航高精传动有限公司 | A kind of multistage compact high-speed gear box with hydraulic clutch |
| CN106523645A (en) * | 2016-12-23 | 2017-03-22 | 南京越博动力系统股份有限公司 | Transmission system of two-gear automatic transmission of electric automobile |
| CN106523645B (en) * | 2016-12-23 | 2018-08-17 | 南京越博动力系统股份有限公司 | A kind of two speed automatic transmission transmission system of electric vehicle |
| CN107091305B (en) * | 2017-04-01 | 2023-11-07 | 重庆电子工程职业学院 | Planetary gear gearbox for electric automobile |
| CN107091305A (en) * | 2017-04-01 | 2017-08-25 | 重庆电子工程职业学院 | Planetary transmission for electric automobile |
| CN107571726A (en) * | 2017-09-19 | 2018-01-12 | 陕西法士特齿轮有限责任公司 | High speed pure electric automobile external toothing variable ratio drive system |
| CN107588156A (en) * | 2017-09-19 | 2018-01-16 | 陕西法士特齿轮有限责任公司 | High speed pure electric automobile planetary gear variable ratio drive system |
| CN107606077A (en) * | 2017-10-26 | 2018-01-19 | 哈尔滨东安汽车发动机制造有限公司 | A kind of two gear power transmissions with Shuangzi planet row |
| CN109442014A (en) * | 2018-11-30 | 2019-03-08 | 浙江伊控动力系统有限公司 | Two speed transmission and method for changing speed for pure electric vehicle |
| CN110805667A (en) * | 2019-11-27 | 2020-02-18 | 安徽江淮汽车集团股份有限公司 | Transmission device, transmission system, and automobile |
| CN112253718A (en) * | 2020-01-14 | 2021-01-22 | 浙江钛兴新能源汽车有限公司 | Electric automobile speed reduction differential mechanism |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee after: Hunan Yung Da intelligent transmission Limited by Share Ltd. Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: Hunan Yung Da vehicle transmission Limited by Share Ltd. Address after: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee after: Hunan Yung Da vehicle transmission Limited by Share Ltd. Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION Ltd. |
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Granted publication date: 20130130 |
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