CN101975269B - Speed ratio control device with belt type continuously variable transmission - Google Patents
Speed ratio control device with belt type continuously variable transmission Download PDFInfo
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Abstract
The invention discloses a speed ratio control device with a belt type continuously variable transmission, comprising a DC motor and a controller thereof, two gear transmission mechanisms, two helical screw mechanisms, two spring assisting mechanisms, a plurality of plane bearings and a plurality of needle bearings, wherein the DC motor as a power source of the speed ratio control of the band-typecontinuously variable transmission converts the deflection angle of the DC motor into the axial displacement of a belt wheel moving disc of the belt type continuously variable transmission under the matching of a spring through the two gear transmission mechanisms and the helical screw mechanisms respectively connected with the gear transmission mechanisms by controlling the deflection and the deflection angle of the DC motor so as to realize the continuous change of the speed ratio of the belt type continuously variable transmission under different working conditions by changing the contact radii between a V-shaped transmission belt and a driving belt wheel disc and between the V-shaped transmission belt and a driven belt wheel disc.
Description
Technical field
The invention belongs to the Transmission Ratio Control device of variable v-belt drive, be mainly used in adopting automobile and the motorcycle of stepless speed variator, also can be applicable to other need to be with the occasion of Belt-type Adjustable-speed mode transferring power.
Background technique
Automotive transmission must adapt to vehicle and start to walk, accelerates, travels and overcoming under the different driving conditions such as different kinds of roads obstacle driving the different requirements of net tractive force of wheel and the speed of a motor vehicle.In order to take full advantage of the power of motor, the emission performance that improves fuel economy and improve automobile, desirable automotive transmission should have the velocity ratio of stepless variation and can carry out the speed ratio optimization control.
The stepless speed variator that uses at automobile and motorcycle at present mostly is greatly variable v-belt drive, and the Transmission Ratio Control mode that adopts mainly comprises two kinds: a kind of for being applied to the electric-controlled hydraulic regulative mode of metal band type stepless speed variator, another kind of for being applied to the torque cam mechanism regulative mode of rubber belt type stepless speed variator.Wherein, in the transfer capacity allowed band of stepless speed variator, electric-controlled hydraulic is regulated can provide the continually varying speed ratio, provides possibility for improving motor average efficiency and automobile fuel ecomomy.But hydraulic actuator efficient is lower, studies show that, in the power loss of metal band type stepless speed variator, hydraulic system accounts for 60 %, and the metal tape friction driving only accounts for about 30 %, and the hydraulic actuator requirement on machining accuracy is higher simultaneously, causes cost higher; And employing torque cam mechanism regulative mode, the speed ratio of stepless speed variator changes the change that generally all is accompanied by engine operating condition, the speed ratio that namely can not make motor maintain optimum working zone and only need regulate stepless speed variator satisfies the requirement of load variations, and the speed ratio degree of regulation can not be controlled.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind ofly can to improve the Transmission Ratio Control device that transmission efficiency can improve again the variable v-belt drive of speed ratio degree of regulation.
For solving the problems of the technologies described above, the invention provides a kind of Transmission Ratio Control device of variable v-belt drive, comprising: direct current generator, be used for this direct current generator of control output shaft turn to be connected with angle of swing controller, when using the connecting engine output shaft power input shaft, be located at driving pulley, the pto＝power take-off that is in transmission connection with vehicular transmission shaft when using on this power input shaft, be located at driven pulley on this pto＝power take-off, be connected the V-type driving belt of described driving pulley and driven pulley; Described driving pulley comprises: be fixed on driving pulley price fixing on the described power input shaft, be located at driving pulley price fixing right side and empty set at driving pulley Moving plate on this driving axle housing of the driving axle housing on the described power input shaft, empty set, be located at the first displacement control mechanism that is used for control driving pulley Moving plate left and right displacement on driving axle housing on described driving pulley Moving plate right side; Described driving pulley price fixing and driving pulley Moving plate are truncated cone, and the end face of driving pulley price fixing and driving pulley Moving plate is oppositely arranged; Described driven pulley comprises: be fixed on driven axle sleeve on described pto＝power take-off of the driven pulley price fixing on the described pto＝power take-off, the left side of being located at the driven pulley price fixing and empty set, driven pulley Moving plate that empty set puts at described driven shaft, be located at control driven pulley Moving plate puts left and right displacement at driven shaft the second displacement control mechanism that is used in described driven pulley Moving plate left side; Described driven pulley Moving plate and driven pulley price fixing are truncated cone, and the end face of driven pulley Moving plate and driven pulley price fixing is oppositely arranged; Described direct current generator is suitable for by controlling simultaneously described driving pulley Moving plate and the in the same way equivalent displacement of driven pulley Moving plate through described first, second displacement control mechanism.
With respect to prior art, good effect of the present invention: the Transmission Ratio Control device of (1) variable v-belt drive of the present invention, drive simultaneously the axial equivalent displacement of driving and driven belt wheel Moving plate by a direct current generator, thereby realize the stepless variation of transmission gear ratio, compare with existing electric liquid Transmission Ratio Control technology, 1), required parts simplify more its remarkable advantage is:, cost is lower, and efficient is higher; 2), guaranteed the close look at the swing of principal and subordinate's movable belt pulley Moving plate, the speed ratio degree of regulation is higher; 3), principal and subordinate's movable belt pulley end adopts different screw structures, can be by the coupling design to the screw structural parameter, so that this device satisfies the requirement that different speed ratios are regulated; 4), only have a motor as the power source of Transmission Ratio Control, control conveniently, simple and accurately, make it not be only applicable to the metal band type stepless speed variator that automobile is used, and be applicable to the rubber belt type stepless speed variator that motorcycle is used.(2) among the present invention, by turning to and corner of control direct current generator, be converted into respectively the axial in the same way equivalent displacement of driving and driven belt wheel Moving plate through upper and lower nut, and then the contact radius of change V-type driving belt and driving and driven belt wheel, the continuous stepless of realizing the stepless speed variator speed ratio changes, and has guaranteed the precision that speed ratio is regulated.For nominal torque and the power that reduces described direct current generator, and then reduce its volume, be provided with respectively spring in the both sides of driving pulley Moving plate, driven pulley Moving plate; Simultaneously, in order to overcome the movement interference with Transmission Ratio Control mechanism of rotatablely moving of driving and driven belt wheel itself, and the second helical screw is carried out axially locating, the present invention is provided with four plane bearings.(3) among the present invention, main, different reduction gears mechanisms and screw machanism have been adopted respectively from belt wheel, can be according to the master, the particular kind of relationship of the end thrust of driven pulley Moving plate and speed changer transmitting torque, and main under the different speed ratios, the corresponding relation of the contact radius of driven pulley and V-type driving belt, the structural parameter of the screw that formed by the first nut and the first helical screw of flexible design respectively, the structural parameter of the driving gear on the first nut, driving gear, middle idle pulley, the structural parameter of driven pulley reach the structural parameter of the screw that is comprised of the second nut and the second helical screw, thereby make this Transmission Ratio Control device satisfy the requirement of load variations.
Description of drawings
For content of the present invention is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the Transmission Ratio Control device of variable v-belt drive of the present invention.
Label in the accompanying drawing: 1--power input shaft, 2--driving pulley price fixing, 3--driving axle housing, 4--driving pulley Moving plate, 5--the first plane bearing, 6--the first nut, the 7-the first helical screw, 8--the 3rd plane bearing, the 9-the first power assistant spring, idle pulley in the middle of the 10--driving gear, 11--, the 12--driven gear, the 13--pto＝power take-off, the 14--needle bearing, 15--exports driving gear, 16--exports driven gear, 17--driven pulley price fixing, the driven axle sleeve of 18--, 19--V type driving belt, 20--driven pulley Moving plate, 21--the second plane bearing, the 22--guide mechanism, 23--the second nut, the 24-the second helical screw, 25--needle bearing, the 26-the second power assistant spring, the 27--vehicular transmission shaft, 28--direct current generator, 29--Siping City spherical bearing, the 30--driving gear, the 31--guiding groove.
Embodiment
See Fig. 1, the Transmission Ratio Control device of the variable v-belt drive of the present embodiment comprises: direct current generator, be used for this direct current generator of control output shaft turn to be connected with angle of swing controller, when using the connecting engine output shaft power input shaft 1, be located at driving pulley, the pto＝power take-off 13 that is in transmission connection with vehicular transmission shaft 27 when using on this power input shaft 1, be located at driven pulley on this pto＝power take-off 13, be connected the V-type driving belt 19 of described driving pulley and driven pulley.
Described driving pulley comprises: be fixed on driving pulley price fixing 2 on the described power input shaft 1, be located at driving pulley price fixing 2 right sides and empty set at driving pulley Moving plate 4 on this driving axle housing 3 of the driving axle housing 3 on the described power input shaft 1, empty set, be located at the first displacement control mechanism that is used for control driving pulley Moving plate 4 left and right displacement on driving axle housing 3 on described driving pulley Moving plate 4 right sides.
Described driving pulley price fixing 2 and driving pulley Moving plate 4 are truncated cone, and the end face of driving pulley price fixing 2 and driving pulley Moving plate 4 is oppositely arranged.
Described driven pulley comprises: be fixed on the driven pulley price fixing 17 on the described pto＝power take-off 13, the left side of being located at driven pulley price fixing 17 and empty set at driven pulley Moving plate 20 on described driven axle sleeve 18 of the driven axle sleeve 18 on the described pto＝power take-off 13, empty set, be located at the second displacement control mechanism that is used for control driven pulley Moving plate 20 left and right displacement on driven axle sleeve 18 in described driven pulley Moving plate 20 left sides;
Described driven pulley Moving plate 20 and driven pulley price fixing 17 are truncated cone, and the end face of driven pulley Moving plate 20 and driven pulley price fixing 17 is oppositely arranged;
Described direct current generator is suitable for by controlling simultaneously described driving pulley Moving plate 4 and in the same way equivalent displacement of driven pulley Moving plate 20 through described first, second displacement control mechanism.
Described the first displacement control mechanism comprises: empty set is on the driving axle housing 3 and be located at the first plane bearing 5 on driving pulley Moving plate 4 right flanks, the first hollow helical screw 7 of being located at the first plane bearing 5 right sides, first nut 6 of screw-thread fit on the first helical screw 7, and this first nut 6 is fixed on the inner ring of a driving gear 30 with one heart;
The output shaft of described direct current generator is provided with driving gear 10, this driving gear 10 and described driving gear 30 engagements;
The left surface of described the first nut 6 withstands on the right flank of the first plane bearing 5.
Described pto＝power take-off 13 is hollow shaft;
Described the second displacement control mechanism comprises: by needle bearing 14 and 25 be located at the second helical screw 24 in the described pto＝power take-off 13, be located at these the second helical screw 24 right-hand members follower 12, be engaged in middle idle pulley 11 between this follower 12 and the described driving gear 10, screw-thread fit in the second nut 23 of described the second helical screw 24 left ends, be located on driven pulley Moving plate 20 left surfaces and be placed in the second plane bearing 21 on the described driven axle sleeve 18;
The right flank of described the second nut 23 withstands on the left surface of the second plane bearing 21.
Described the first displacement control mechanism also comprises: in the first helical screw 7 and be enclosed within first power assistant spring 9 of elastic reaction on the first plane bearing 5 right flanks on the driving axle housing 3;
Described the second displacement control mechanism also comprises: in the second nut 23 and be enclosed within second power assistant spring 26 of elastic reaction on these the second plane bearing 21 left surfaces on the driven axle sleeve 18; In use, the elastic force of the first power assistant spring 9 acts on end thrust on the driving pulley Moving plate 4 less than V-type driving belt 19, and the elastic force of the second power assistant spring 26 acts on end thrust on the driven pulley Moving plate 20 less than V-type driving belt 19.
The outer wall of described the second nut 23 is provided with axial guiding groove 31, and when the outside of this guiding groove 31 was provided with fixing spacing guide rod 22(implementation, this spacing guide rod 22 was fixed on the inwall of case of transmission).
Described pto＝power take-off 13 is provided with output driving gear 15, and this output driving gear 15 is in transmission connection with described vehicular transmission shaft 27 by output driven gear 16.
When the right-hand member of described power input shaft 1 was provided with the 3rd fixing plane bearing 8(implementation, it was fixed on the inwall of case of transmission), described the first power assistant spring 9 elasticity are arranged between the 3rd plane bearing 8 and described the first plane bearing 5.
Size, the shape of described driving pulley price fixing 2, driving pulley Moving plate 4, driven pulley Moving plate 20 and driven pulley price fixing 17 are consistent.
When the right side of described the second helical screw 24 was provided with the fixing spherical bearing 29(of Siping City implementation, it was fixed on the inwall of case of transmission).
The below changes from small to big to the speed ratio of speed changer respectively and being described below of two processes from large to small and working principle thereof:
During the ascending adjusting of the speed ratio of speed changer, namely need to control the driving pulley radius of clean-up and diminish, it is large that the driven pulley radius of clean-up becomes; Control direct current generator 28 and be rotated counterclockwise several angle this moment, at the driving pulley end, the first nut 6 turns clockwise under the effect of driving gear 10 and driving gear 30, the first helical screw 7 is fixing, 6 relative the first helical screw 7 straight-line displacements to the right of the first nut, driving pulley Moving plate 4 also moves right under the promotion of V-type driving belt 19, and V-type driving belt 19 reduces with the contact radius of driving pulley; At the driven pulley end, when direct current generator 28 is rotated counterclockwise several angle, because the effect of middle idle pulley 11 and driven gear 12, the second helical screw 24 is also done counterclockwise motion, because the second helical screw 24 can only rotate and can not move axially, so the second nut 23 straight-line displacement to the right under the effect of guide mechanism 22, and promote 20 straight-line displacements to the right of driven pulley Moving plates with the second power assistant spring 26 through plane bearing 21, because driven pulley price fixing 17 keeps motionless, V-type driving belt 19 becomes large with the contact radius of driven pulley, realizes that the speed ratio of speed changer becomes large.
When the descending adjusting of the speed ratio of speed changer, that is: need the driving pulley radius of clean-up to become large, the driven pulley radius of clean-up diminishes; Control direct current generator 28 several angle that turns clockwise this moment, at the driving pulley end, the first nut 6 is rotated counterclockwise under the effect of driving gear 10 and driving gear 30, because the first helical screw 7 maintains static, 6 relative the first helical screw 7 straight-line displacements left of the first nut, and promote 4 straight-line displacements left of driving pulley Moving plates with the first power assistant spring 9 through plane bearing 5, because driving pulley price fixing 2 keeps motionless, V-type driving belt 9 becomes large with the contact radius of driving pulley; At the driven pulley end, when direct current generator 28 turns clockwise several angle, because the effect of driving gear 10, middle idle pulley 11 and driven gear 12, the second helical screw 24 is also done clockwise motion, the axial traveling priority because the second helical screw 24 can only rotate, so the second nut 23 straight-line displacement left under the effect of guide mechanism 22, driven pulley Moving plate 20 under the promotion of V-type driving belt 19 also to left movement, so that the contact radius of V-type driving belt 19 and driven pulley diminishes, realize that the speed ratio of speed changer diminishes.
Wherein, the change of V-type driving belt 19 and driving and driven belt wheel contact radius is that the belt length with V-type driving belt 19 does not become prerequisite, be that V-type driving belt 19 belt lengths remain unchanged, when the contact radius of driving pulley and V-type driving belt 19 becomes large, the contact radius of driven pulley and V-type driving belt 19 diminishes, and vice versa.This is that variable v-belt drive is realized the basic principle that speed ratio is regulated.
Above-described embodiment only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.
Claims (7)
1. the Transmission Ratio Control device of a variable v-belt drive is characterized in that comprising: direct current generator, be used for this direct current generator of control output shaft turn to be connected with angle of swing controller, when using the connecting engine output shaft power input shaft (1), be located at driving pulley, the pto＝power take-off (13) that is in transmission connection with vehicular transmission shaft (27) when using on this power input shaft (1), be located at driven pulley on this pto＝power take-off (13), be connected the V-type driving belt (19) of described driving pulley and driven pulley;
Described driving pulley comprises: be fixed on driving pulley price fixing (2) on the described power input shaft (1), be located at driving pulley price fixing (2) right side and empty set driving pulley Moving plate (4) on this driving axle housing (3) of the driving axle housing (3) on the described power input shaft (1), empty set, be located at described driving pulley Moving plate (4) right side be used for control driving pulley Moving plate (4) at the first displacement control mechanism of the upper left and right displacement of driving axle housing (3);
Described driving pulley price fixing (2) and driving pulley Moving plate (4) are truncated cone, and the end face of driving pulley price fixing (2) and driving pulley Moving plate (4) is oppositely arranged;
Described driven pulley comprises: be fixed on the driven pulley price fixing (17) on the described pto＝power take-off (13), the left side of being located at driven pulley price fixing (17) and empty set driven pulley Moving plate (20) on described driven axle sleeve (18) of the driven axle sleeve (18) on the described pto＝power take-off (13), empty set, be located at described driven pulley Moving plate (20) left side be used for control driven pulley Moving plate (20) at the second displacement control mechanism of the upper left and right displacement of driven axle sleeve (18);
Described driven pulley Moving plate (20) and driven pulley price fixing (17) are truncated cone, and the end face of driven pulley Moving plate (20) and driven pulley price fixing (17) is oppositely arranged;
Described direct current generator is suitable for by control simultaneously described driving pulley Moving plate (4) and in the same way equivalent displacement of driven pulley Moving plate (20) through described first, second displacement control mechanism;
Described the first displacement control mechanism comprises: empty set is on driving axle housing (3) and be located at the first plane bearing (5) on driving pulley Moving plate (4) right flank, hollow the first helical screw (7) of being located at the first plane bearing (5) right side, first nut (6) of screw-thread fit on the first helical screw (7), and this first nut (6) is fixed on the inner ring of a driving gear (30) with one heart;
The output shaft of described direct current generator is provided with driving gear (10), this driving gear (10) and described driving gear (30) engagement;
The left surface of described the first nut (6) withstands on the right flank of the first plane bearing (5);
Described pto＝power take-off (13) is hollow shaft;
Described the second displacement control mechanism comprises: be located at interior the second helical screw (24) of described pto＝power take-off (13) by needle bearing (14 and 25), be located at the follower (12) of this second helical screw (24) right-hand member, be engaged in the middle idle pulley (11) between this follower (12) and the described driving gear (10), screw-thread fit is in second nut (23) of described the second helical screw (24) left end, be located on driven pulley Moving plate (20) left surface and be placed in the second plane bearing (21) on the described driven axle sleeve (18);
The right flank of described the second nut (23) withstands on the left surface of the second plane bearing (21).
2. the Transmission Ratio Control device of variable v-belt drive according to claim 1, it is characterized in that: described the first displacement control mechanism also comprises: in the first helical screw (7) and be enclosed within first power assistant spring (9) of elastic reaction on the first plane bearing (5) right flank on the driving axle housing (3);
Described the second displacement control mechanism also comprises: in the second nut (23) and be enclosed within second power assistant spring (26) of elastic reaction on this second plane bearing (21) left surface on the driven axle sleeve (18); In use, the elastic force of the first power assistant spring (9) acts on end thrust on the driving pulley Moving plate (4) less than V-type driving belt (19), and the elastic force of the second power assistant spring (26) acts on end thrust on the driven pulley Moving plate (20) less than V-type driving belt (19).
3. the Transmission Ratio Control device of variable v-belt drive according to claim 2, it is characterized in that: the outer wall of described the second nut (23) is provided with axial guiding groove (31), and the outside of this guiding groove (31) is provided with fixing spacing guide rod (22).
4. the Transmission Ratio Control device of described variable v-belt drive one of according to claim 1-3, it is characterized in that: described pto＝power take-off (13) is provided with output driving gear (15), and this output driving gear (15) is in transmission connection by output driven gear (16) and described vehicular transmission shaft (27).
5. according to claim 2 or the Transmission Ratio Control device of 3 described variable v-belt drives, it is characterized in that: the right-hand member of described power input shaft (1) is provided with fixing the 3rd plane bearing (8), and described the first power assistant spring (9) elasticity is arranged between the 3rd plane bearing (8) and described the first plane bearing (5).
6. the Transmission Ratio Control device of described variable v-belt drive one of according to claim 1-3, it is characterized in that: size, the shape of described driving pulley price fixing (2), driving pulley Moving plate (4), driven pulley Moving plate (20) and driven pulley price fixing (17) are consistent.
7. the Transmission Ratio Control device of described variable v-belt drive one of according to claim 1-3, it is characterized in that: the right side of described the second helical screw (24) is provided with fixing Siping City's spherical bearing (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010538238 CN101975269B (en) | 2010-11-10 | 2010-11-10 | Speed ratio control device with belt type continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010538238 CN101975269B (en) | 2010-11-10 | 2010-11-10 | Speed ratio control device with belt type continuously variable transmission |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210472861.0A Division CN102937170B (en) | 2010-11-10 | 2010-11-10 | Belt type infinitely variable transmission speed ratio control device capable of improving speed ratio adjustment accuracy |
| CN201210472923.8A Division CN102943872B (en) | 2010-11-10 | 2010-11-10 | Speed ratio control device for belt type continuously variable transmission of automobile and motorcycle |
| CN201210472053.4A Division CN102943871B (en) | 2010-11-10 | 2010-11-10 | Belt continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101975269A CN101975269A (en) | 2011-02-16 |
| CN101975269B true CN101975269B (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010538238 Expired - Fee Related CN101975269B (en) | 2010-11-10 | 2010-11-10 | Speed ratio control device with belt type continuously variable transmission |
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| GB2529504A (en) * | 2014-05-12 | 2016-02-24 | Manousos Pattakos | CVT V-belt over-clamping |
| CN104315103A (en) * | 2014-09-25 | 2015-01-28 | 洛阳睿能传动科技有限公司 | Electric speed adjustment device of continuously variable transmission for electrically adjusting reducing of driving wheel and method of electric speed adjustment device |
| CN104455290A (en) * | 2014-09-25 | 2015-03-25 | 洛阳睿能传动科技有限公司 | Electric adjusting drive wheel reducing mechanism and method of gasoline car progressive transmission |
| CN105402341A (en) * | 2015-12-30 | 2016-03-16 | 北京工业大学 | Design method of speed regulating mechanism for sliding tooth infinitely variable transmission |
| CN105485277B (en) * | 2016-01-25 | 2017-12-08 | 扬州大学 | Circular cone type reducing belt pulley variable speed device |
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| CN108087512B (en) * | 2018-01-23 | 2023-09-29 | 浙江大邦电动工具有限公司 | Diameter-variable stepless speed changer |
| CN111810600A (en) * | 2020-08-18 | 2020-10-23 | 广州艾可米汽车科技股份有限公司 | Diaphragm spring type continuously variable transmission |
| CN113023257B (en) * | 2021-03-05 | 2022-07-26 | 罗士技术(深圳)有限公司 | Industrial intelligent manufacturing system with stepless speed change function |
| CN113153993A (en) * | 2021-05-21 | 2021-07-23 | 陈荣江 | Continuously variable transmission |
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| CN1962355A (en) * | 2005-11-07 | 2007-05-16 | 雅马哈发动机株式会社 | Straddle-type vehicle |
| CN101865264A (en) * | 2010-05-27 | 2010-10-20 | 重庆怡海科技发展有限公司 | Belt transmission type continuously variable transmission mechanism |
| CN201858348U (en) * | 2010-11-10 | 2011-06-08 | 江苏技术师范学院 | Speed ratio control device of belt type continuously variable transmission |
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| Publication number | Publication date |
|---|---|
| CN101975269A (en) | 2011-02-16 |
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