CN114658840B - Active speed-regulating gear shifting mechanism and method for automobile power system - Google Patents
Active speed-regulating gear shifting mechanism and method for automobile power system Download PDFInfo
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- CN114658840B CN114658840B CN202210303761.9A CN202210303761A CN114658840B CN 114658840 B CN114658840 B CN 114658840B CN 202210303761 A CN202210303761 A CN 202210303761A CN 114658840 B CN114658840 B CN 114658840B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000001012 protector Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 8
- 238000011217 control strategy Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
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- 230000001360 synchronised effect Effects 0.000 description 6
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses an active speed regulation gear shifting mechanism and method of an automobile power system. The driving speed regulating mechanism comprises a driving motor, a screw rod, a second gear shifting hub, a bearing, a belt wheel and a transmission belt, wherein the bearing is arranged in the center of one side of the belt wheel, and the other side of the belt wheel can be connected with and disconnected from the second gear shifting hub; the belt wheel and the combining teeth are driven by a driving belt, and the screw rod can drive the second gear shifting hub to move forwards and backwards. The action mechanism comprises a tooth sleeve, a tooth hub, a synchronizing ring and combining teeth, wherein the tooth hub is arranged on the inner side of the tooth sleeve, and the synchronizing ring is positioned between the tooth sleeve and the combining teeth. According to the invention, through an active speed regulation control strategy, the shifting smoothness of the synchronizer is improved while the cost is reduced, the influence of shifting impact force on the synchronizer is reduced, and the reliability and the service life of the synchronizer are ensured.
Description
Technical Field
The invention belongs to the technical field of gear shifting control of an automobile power system, and particularly relates to an active speed regulation synchronous gear shifting system and a gear shifting method in a clutch-free gear shifting process of an automobile.
Background
A hybrid electric vehicle which adopts a clutch to shift gears, wherein the clutch enables an engine to be separated under a low-speed state, and a motor is used for driving the vehicle; in a high-speed state, the clutch couples the engine and the motor, and the engine matches the vehicle speed by means of friction of the clutch to complete gear shifting. The process not only increases the gear shifting time, but also ensures that the power interruption time is long; moreover, the hydraulic control system of the clutch has reliability problems such as sealing and the like, and has relatively high cost.
At present, the synchronizer structure is an indispensable important ring in the fields of fuel automobiles, hybrid electric vehicles and pure electric vehicle speed variators, bears the tasks of power input and power output, realizes the smooth switching of different gears and different driving modes of the automobile, directly influences the driving experience on the smoothness of gear shifting and the quality of gear shifting time, and even can generate irreversible influence on the reliability and the service life of the speed variators. The synchronizer is simple and convenient to shift and low in cost, but the internal impact force is large, the teaching is difficult, and the reliability of the synchronizer and the gearbox is seriously affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a novel clutch-free synchronous gear shifting technology of an automobile power system, and the synchronous ring structure is completely used for completing the power coupling and gear shifting process. On one hand, the cost of the gearbox is greatly reduced, the space is reduced, the carrying performance is enhanced, and the manufacturing process is simplified; on the other hand, a set of efficient and reliable transmission scheme is provided for the synchronizer system, and the dynamic property, economical efficiency and comfort of the automobile are improved.
An active speed-regulating gear shifting mechanism of an automobile power system, comprising:
a controller which collects vehicle and road surface information, pre-judges driver's shift intention, judges shift demand, adjusts the rotation speed or torque of the driving motor,
the actuating mechanism comprises a driving motor, a screw rod, a first gear shifting hub, a nut seat and a shifting fork, wherein the driving motor provides rotating speed or torque for the screw rod; the first gear shifting hub moves back and forth under the rotation of the screw rod, and the nut seat drives the shifting fork to move; the shifting fork is fork-shaped, the upper part of the shifting fork is connected with the nut seat, and the lower fork part of the shifting fork is movably connected with the tooth sleeve;
the driving speed regulating mechanism comprises a driving motor, a screw rod, a second gear shifting hub, a bearing and a belt pulley, wherein the bearing is arranged in the center of one side of the belt pulley, and the other side of the belt pulley can be connected with and disconnected from the second gear shifting hub; the screw rod can drive the second gear shifting hub to move forwards and backwards, the belt wheel and the combining teeth are driven by the components,
and working strokes and idle strokes are arranged in the first gear shifting hub and the second gear shifting hub.
The action mechanism comprises a tooth sleeve, a tooth hub, a synchronizing ring and combining teeth, wherein the tooth hub is arranged on the inner side of the tooth sleeve, and the synchronizing ring is positioned between the tooth sleeve and the combining teeth.
Further, the lead screw includes two independent sections, and first section is connected with first gear shifting hub, and second section and second gear shifting hub install the speed reduction protector between the two sections.
Further, the device also comprises a guide rod, wherein the guide rod is fixed, the guide rod is inserted into the shifting fork, and the shifting fork can horizontally move back and forth along the guide rod.
Further, a clamping groove is formed in the side face of the outer ring of the tooth sleeve, an arc-shaped protrusion is arranged on the inner side of the fork part of the shifting fork, and the arc-shaped protrusion is embedded into the clamping groove.
Further, the nut seat is in interference fit with the first shift hub.
Further, the second gear shifting hub is provided with an external spline structure, the belt wheel is provided with an internal spline structure, and the second gear shifting hub is matched with the inside of the belt wheel.
Correspondingly, the invention provides a clutch-free synchronous gear shifting method of an automobile power system, which comprises the following steps of:
s1, acquiring a gear shifting requirement,
the controller collects the current speed, the vehicle state, the road condition, the traffic rule, the external environment and the engine speed of the engine, judges whether the current driving gear is suitable or not, and sends out the gear-up or gear-down requirement when the current driving gear is unsuitable;
s2, pre-synchronizing the gear shifting,
the actuating mechanism acts, the controller controls the driving motor to output torque, the driving motor drives the screw rod to rotate, at the moment, the first gear shifting hub is a working stroke, the second gear shifting hub is an idle stroke, and the first gear shifting hub drives the nut seat, the shifting fork and the gear sleeve to transversely move; the second gear shifting hub is idle, when the gear sleeve moves a certain distance and is combined with the synchronous ring, the synchronizer enters a pre-synchronization stage,
s3, actively regulating the speed of the motor,
under the friction action of the synchronizing ring, the rotating speed of the combining teeth is slowly close to the rotating speed of the gear hub, at the moment, the driving motor continuously gives torque to drive the screw rod to continuously rotate, at the moment, the first gear shifting hub is in idle stroke, the second gear shifting hub is in working stroke, the second gear shifting hub is successfully combined with the internal spline of the inner diameter of the belt wheel under the pushing action of the screw rod, the second gear shifting hub is connected with the belt wheel to work, thereby smoothly transmitting the torque output by the driving motor to the belt wheel, further regulating the speed of the combining teeth, realizing rapid abrupt change of the rotating speed of the combining teeth under the action of the torque output by the driving motor until the rotating speed of the combining teeth approaches to the rotating speed of the gear hub,
s4, the gear shifting is completed,
the driving motor continues to output torque, the driving motor drives the screw rod to rotate, the first gear shifting hub is a working stroke, the second gear shifting hub is in a connection state with the belt wheel, the first gear shifting hub pushes the nut seat to continue moving under the action of the screw rod until the tooth sleeve is combined with the combining teeth, and meanwhile the second gear shifting hub exits from the belt wheel under the action of the screw rod and the protection unit.
The invention has the beneficial effects that:
according to the active speed regulation gear shifting mechanism and method for the automobile power system, a clutch is avoided during gear shifting, so that the cost is reduced, and meanwhile, the power interruption time is shortened; through the active speed regulation control strategy, the gear shifting smoothness of the synchronizer is improved while the cost is reduced, the influence of gear shifting impact force on the synchronizer is reduced, and the reliability and the service life of the synchronizer are ensured.
Drawings
FIG. 1 is a schematic front view of an active speed-regulating gear shifting mechanism of an automobile power system according to the present invention;
FIG. 2 is a schematic perspective view of an active speed-regulating gear shifting mechanism of an automobile power system according to the invention;
FIG. 3 is an exploded view of the assembly of the hub, sleeve, synchronizer ring, and mating teeth according to the present invention;
FIG. 4 is a schematic view of the internal structure of a first shift hub and a second shift hub;
FIG. 5 is a schematic diagram of a simulation of the non-active speed regulation module in combination with tooth speed, hub speed and sleeve displacement during a synchronizer ring shift;
fig. 6 is a schematic diagram of a simulation of the active speed regulation module in combination with tooth rotation speed, hub rotation speed and tooth sleeve displacement during shifting of the synchronizer ring.
In the figure: 1. a controller; 2. a driving motor; 3. a screw rod; 4. a nut seat; 5. a first shift hub; 6. a deceleration protector; 7. a second shift hub; 8. a belt wheel; 9. a bearing; 10. a transmission belt; 11. a shifting fork; 12. a guide rod; 13. a gear hub; 14. a tooth sleeve; 15. a synchronizing ring; 16. a combination tooth 17 and a working stroke; 18. idle stroke.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in fig. 1 and 2, an active speed regulation and gear shifting mechanism of an automobile power system comprises a controller 1, an executing mechanism, an active speed regulation mechanism and an actuating mechanism,
the controller 1 collects vehicle and road surface information, pre-judges driver's gear shifting intention, judges gear shifting demand, and adjusts the rotation speed or torque of the driving motor.
The actuating mechanism comprises a driving motor 2, a screw rod 3, a first gear shifting hub 5, a nut seat 4 and a shifting fork 11, wherein the driving motor 2 provides rotating speed or torque for the screw rod 3, the first gear shifting hub 5 is detachably arranged in the nut seat 4, and the first gear shifting hub 5 is provided with a spiral groove to be matched with the screw rod 3. The first gear shifting hub 5 moves back and forth under the rotation of the screw rod 3, and the nut seat 4 drives the shifting fork 11 to move; the shifting fork is fork-shaped, the upper part of the shifting fork is connected with the nut seat 4, and the lower fork part of the shifting fork is movably connected with the tooth sleeve 14;
the driving speed regulating mechanism comprises a driving motor 2, a lead screw 3, a second gear shifting hub 7, a bearing 9, a belt pulley 8 and a transmission belt 10, wherein the bearing 9 is arranged in the center of one side of the belt pulley 8, the other side of the belt pulley 8 can be connected with and disconnected from the second gear shifting hub 7, and the lead screw 3 can drive the second gear shifting hub 7 to move back and forth. The belt pulley 8 and the combination teeth 16 can be driven by the driving belt 10, and grooves are respectively formed in the belt pulley 8 and the combination teeth 16; the belt wheel 8 and the combining teeth 16 can be driven by a chain, and the belt wheel 8 and the combining teeth 16 are chain wheels; the belt wheel 8 and the combining teeth 16 can also be directly meshed by gears.
The first shift hub 5 and the second shift hub 7 are provided with a working stroke 17 and a free stroke 18.
As shown in fig. 2 and 3, the actuating mechanism comprises a tooth sleeve 14, a tooth hub 13, a synchronizing ring 15 and a combining tooth 16, wherein the tooth hub 13 is arranged on the inner side of the tooth sleeve 14, and the synchronizing ring 15 is positioned between the tooth sleeve 14 and the combining tooth 16.
In one example, the screw 3 comprises two independent segments, a first segment connected to the first gear-shifting hub 5 and a second segment connected to the second gear-shifting hub 7, between which a reduction protector 6 is mounted.
In one example, the device further comprises a guide rod 12, wherein the guide rod 12 is fixed, the guide rod 12 is inserted into the shifting fork 11, and the shifting fork can horizontally move back and forth along the guide rod 12.
In one example, the outer ring side surface of the tooth sleeve 14 is provided with a clamping groove, and the inner side of the fork part of the shifting fork 11 is provided with an arc-shaped protrusion, and the arc-shaped protrusion is embedded into the clamping groove.
In one example, the nut seat 4 is an interference fit with the first shift hub 5.
In one example, the second gear shift hub 7 is provided with an external spline structure, the pulley 8 is provided with an internal spline structure, and the second gear shift hub 7 is internally fitted with the pulley 8.
Correspondingly, the invention provides a clutch-free synchronous gear shifting method of an automobile power system, which comprises the following steps of:
s1, acquiring a gear shifting requirement,
the controller 1 collects the current speed of the engine, the state of the vehicle, road conditions, traffic rules, external environment and engine speed, judges whether the current driving gear is suitable or not, and sends out the gear-up or gear-down requirement when the current driving gear is unsuitable;
s2, pre-synchronizing the gear shifting,
the actuating mechanism acts, the controller 1 controls the driving motor 2 to output torque, the driving motor 2 drives the screw rod 3 to rotate, at the moment, the first gear shifting hub 5 is a working stroke 17, the second gear shifting hub 7 is an idle stroke 18, and the first gear shifting hub 5 drives the nut seat 4, the shifting fork 11 and the tooth sleeve 14 to transversely move; the second gear-shifting hub 7 is inactive for the idle stroke 18, and when the toothed sleeve 14 moves a certain distance and engages with the synchronizing ring 15, the synchronizer enters a pre-synchronization phase,
s3, actively regulating the speed of the motor,
under the friction action of the synchronizing ring 15, the rotating speed of the combining teeth 16 is slowly close to the rotating speed of the gear hub 13, at the moment, the driving motor 2 continuously gives torque to drive the screw rod 3 to continuously rotate, at the moment, the first gear shifting hub 5 is an idle stroke 18, the second gear shifting hub 7 is a working stroke 17, the second gear shifting hub 7 is successfully combined with an internal spline of the inner diameter of the belt pulley 8 under the pushing action of the screw rod 3, the second gear shifting hub 7 is connected with the belt pulley 8 to work, thereby smoothly transmitting the torque output by the driving motor 2 to the belt pulley 8, further regulating the speed of the combining teeth 16, realizing rapid abrupt change of the rotating speed of the combining teeth 16 under the action of the torque output by the driving motor 2 until the rotating speed of the combining teeth 13 is close to the rotating speed of the gear hub,
s4, the gear shifting is completed,
the driving motor 2 continues to output torque, the driving motor 2 drives the screw rod 3 to rotate, at the moment, the first gear shifting hub 5 is in a working stroke 17, the second gear shifting hub 7 is in a connection state with the belt wheel 8, the first gear shifting hub 5 pushes the nut seat 4 to continue to move under the action of the screw rod 3 until the tooth sleeve 14 is combined with the combining tooth 16, and meanwhile the second gear shifting hub 7 exits from the belt wheel 8 under the action of the screw rod 3 and the protection unit.
The working principle of the invention is as follows:
the main functions of the controller 1 are: judging whether a gear shifting requirement exists according to external information (such as current vehicle speed, vehicle state, road condition, traffic rules, external environment, engine rotating speed and the like), and controlling the driving motor 2 to provide proper rotating speed or torque according to a gear shifting process of a synchronizer; the driving motor 2 provides power for transverse translation for a tooth sleeve 14 of a synchronizer under the stroke of a guide rod 12 through a lead screw 3, a first gear shifting hub 5, a nut seat 4 and a shifting fork 11, and adjusts the rotating speed for a combination tooth 16 through an active speed adjusting module comprising the lead screw 3, a speed reduction protector 6, a second gear shifting hub 7, a belt pulley 8 and a transmission belt 10, and the driving motor 2 can control the speed or torque.
The internal structures of the first gear shifting hub 5 and the second gear shifting hub 7 are shown in fig. 4, and a working stroke 17 and a free stroke 18 exist in the internal structures, so that the working in the gear shifting process is required to be matched and exchanged with the working stroke 17 and the free stroke 18 of the first gear shifting hub 5 and the second gear shifting hub 7, and the power split is realized under the condition that the power of the driving motor 2 is uninterrupted. The second gear shifting hub 7 is provided with an external spline structure at the periphery, and can be combined with an internal spline of the belt wheel 8, the first gear shifting hub 5 is provided with no spline structure, the first gear shifting hub is mainly in interference fit with the nut seat 4, the inner diameter of the belt wheel 8 is provided with a spline structure which can be matched with the second gear shifting hub 7, and the inner diameter of the belt wheel 8 is also provided with a bearing 9, and the matching mode is interference fit. The pulley 8 and the second gear shifting hub 7 are not combined and rotate through the bearing 9 under the action of the combining teeth 16 and the transmission belt 10, and torque is transmitted from the end of the driving motor 2 to the combining teeth 16 through the screw rod 3, the speed reduction protector 6, the second gear shifting hub 7, the pulley 8 and the transmission belt 10 when the pulley 8 and the second gear shifting hub 7 are combined.
When the second gear shifting hub 7 is in a working stroke and is connected with the belt wheel 8, the combining teeth 16 can generate instant torque to the screw rod 3 and the driving motor 2, so that the speed reduction protector 6 is arranged on the screw rod 3, and the main structure of the speed reduction protector is a speed change structure or other structures, and the speed reduction protector has the function of avoiding damage to the screw rod 3 and the driving motor 2 caused by instant impact of the belt wheel 8.
As shown in fig. 5, if there is no active speed regulation module for the coupling tooth 16: it can be seen from the figure that the speed profile of the coupling tooth 16 only drops slowly under the friction of the synchronizing ring 15 and the coupling tooth 16, the presynchronization time being longer, resulting in a longer shift time.
As shown in fig. 6, if an active speed regulation module for the coupling tooth 16 is added: it can be seen from the figure that the speed profile of the coupling tooth 16 is rapidly reduced by means of the torque of the drive motor 2 and the friction double action of the synchronizing ring 15 and the coupling tooth 16, the presynchronization time is drastically shortened, the shifting time is significantly faster, the shifting process is more compact, and an effective control of the impact force can be achieved.
Similarly, when the input end rotation speed is greater than the output end rotation speed, the difference between the active speed regulation module and the passive speed regulation module is similar to the above embodiment.
In summary, the active speed regulation module is added in the gear shifting process of the synchronizer, so that the gear shifting time is shortened, and the controllability of impact force is realized.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention can be implemented by those skilled in the art without limiting the scope of the invention, therefore, all equivalent changes or modifications that are made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. An active speed regulation gearshift of an automobile power system is characterized in that: comprising the following steps:
a controller (1), wherein the controller (1) collects vehicle and road surface information, pre-judges the gear shifting intention of a driver, judges the gear shifting requirement and adjusts the rotating speed or torque of the driving motor (2),
the actuating mechanism comprises a driving motor (2), a screw rod (3), a first gear shifting hub (5), a nut seat (4) and a shifting fork (11), wherein the driving motor (2) provides rotating speed or torque for the screw rod (3), the first gear shifting hub (5) is detachably arranged in the nut seat (4), and the first gear shifting hub (5) is provided with a spiral groove to be matched with the screw rod (3); the first gear shifting hub (5) moves back and forth under the rotation of the screw rod (3), and the nut seat (4) drives the shifting fork (11) to move; the shifting fork (11) is fork-shaped, the upper part of the shifting fork is connected with the nut seat (4), and the lower fork part of the shifting fork is movably connected with the tooth sleeve (14);
the driving speed regulating mechanism comprises a driving motor (2), a lead screw (3), a second gear shifting hub (7), a bearing (9) and a belt wheel (8), wherein the bearing (9) is arranged in the center of one side of the belt wheel (8), the other side of the belt wheel (8) can be connected with and disconnected from the second gear shifting hub (7), and the lead screw (3) can drive the second gear shifting hub (7) to move forwards and backwards; a transmission structure is arranged between the belt wheel (8) and the combining teeth (16),
a working stroke (17) and an idle stroke (18) are arranged in the first gear shifting hub (5) and the second gear shifting hub (7);
the action mechanism comprises a tooth sleeve (14), a tooth hub (13), a synchronizing ring (15) and combining teeth (16), wherein the tooth hub (13) is arranged on the inner side of the tooth sleeve (14), and the synchronizing ring (15) is positioned between the tooth sleeve (14) and the combining teeth (16).
2. The active speed governing shift mechanism of an automotive power system of claim 1, wherein: the screw rod (3) comprises two independent sections, the first section is connected with a first gear shifting hub (5), the second section is connected with a second gear shifting hub (7), and a speed reduction protector (6) is arranged between the two sections.
3. The active speed governing shift mechanism of an automotive power system of claim 1, wherein: the belt wheel (8) and the combining teeth (16) are driven by one of the following driving structures: a driving belt (10), a chain and a gear.
4. The active speed governing shift mechanism of an automotive power system of claim 1, wherein: the novel high-speed hydraulic lifting device is characterized by further comprising a guide rod (12), wherein the guide rod (12) is fixed, the guide rod (12) is inserted into the shifting fork (11), and the shifting fork (11) can horizontally move back and forth along the guide rod (12).
5. The active speed governing shift mechanism of an automotive power system of claim 1, wherein: the side of the outer ring of the tooth sleeve (14) is provided with a clamping groove, the inner side of the fork part of the shifting fork (11) is provided with an arc-shaped bulge, and the arc-shaped bulge is embedded into the clamping groove.
6. The active speed governing shift mechanism of an automotive power system of claim 1, wherein: the nut seat (4) is in interference fit with the first gear shifting hub (5).
7. The active speed governing shift mechanism of an automotive power system of claim 1, wherein: the second gear shifting hub (7) is provided with an external spline structure, the belt wheel (8) is provided with an internal spline structure, and the second gear shifting hub (7) is matched with the inside of the belt wheel (8).
8. An active speed regulation gear shifting method of an automobile power system is characterized by comprising the following steps of: the method comprises the following steps:
s1, acquiring a gear shifting requirement,
the controller (1) collects the current speed of the engine, the state of the vehicle, road conditions, traffic rules, the external environment and the rotational speed of the engine, judges whether the current driving gear is suitable or not, and sends out the gear-up or gear-down requirement when the current driving gear is unsuitable;
s2, pre-synchronizing the gear shifting,
the actuating mechanism acts, the controller (1) controls the driving motor (2) to output torque, the driving motor (2) drives the screw rod (3) to rotate, at the moment, the first gear shifting hub (5) is a working stroke (17), the second gear shifting hub (7) is an idle stroke (18), and the first gear shifting hub (5) drives the nut seat (4), the shifting fork (11) and the tooth sleeve (14) to transversely move; the second gear shifting hub (7) is idle (18) and enters a pre-synchronization stage when the gear sleeve (14) moves a certain distance and is combined with the synchronization ring (15),
s3, actively regulating the speed of the motor,
under the friction action of the synchronizing ring (15), the rotating speed of the combining teeth (16) is slowly close to the rotating speed of the gear hub (13), at the moment, the driving motor (2) continuously gives torque to drive the screw rod (3) to continuously rotate, at the moment, the first gear shifting hub (5) is an idle stroke (18), the second gear shifting hub (7) is a working stroke (17), the second gear shifting hub (7) is successfully combined with an internal spline of the inner diameter of the belt wheel (8) under the pushing action of the screw rod (3), the second gear shifting hub (7) is connected with the belt wheel (8) to work, thereby smoothly transmitting the torque output by the driving motor (2) to the belt wheel (8), further regulating the speed of the combining teeth (16), the rotating speed of the combining teeth (16) is rapidly suddenly changed under the action of the torque output by the driving motor (2) until the rotating speed of the combining teeth (16) is close to the rotating speed of the gear hub (13),
s4, the gear shifting is completed,
the driving motor (2) continues to output torque, the driving motor (2) drives the screw rod (3) to rotate, at the moment, the first gear shifting hub (5) is a working stroke (17), the second gear shifting hub (7) is in a connection state with the belt wheel (8), the first gear shifting hub (5) pushes the nut seat (4) to continue to move under the action of the screw rod (3) until the tooth sleeve (14) is combined with the combining teeth (16), and meanwhile, the second gear shifting hub (7) is withdrawn from the belt wheel (8) under the action of the screw rod (3) and the protection unit.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005155849A (en) * | 2003-11-27 | 2005-06-16 | Bosch Automotive Systems Corp | Motor driving-type transmission operating device |
| DE102006054902A1 (en) * | 2005-12-15 | 2007-06-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Gear actuator for a motor vehicle's gearing device has an electric motor, a rotating threaded spindle driven by this motor, a spindle nut driven by the threaded spindle and a gear selector shaft |
| CN101603592A (en) * | 2009-07-10 | 2009-12-16 | 重庆大学 | Electric automatic shift device of motor vehicle |
| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN103557316A (en) * | 2013-11-23 | 2014-02-05 | 合肥工业大学 | Screw-nut gear-shifting mechanism for automatic two-gear transmission of electric car |
| CN104329455A (en) * | 2014-11-11 | 2015-02-04 | 合肥工业大学 | Motor-driven planetary gear train gear shifting mechanism |
| CN112557028A (en) * | 2020-12-09 | 2021-03-26 | 江苏新能源汽车研究院有限公司 | Clutchless hybrid-driven gear shifting test bench and test method |
-
2022
- 2022-03-24 CN CN202210303761.9A patent/CN114658840B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005155849A (en) * | 2003-11-27 | 2005-06-16 | Bosch Automotive Systems Corp | Motor driving-type transmission operating device |
| DE102006054902A1 (en) * | 2005-12-15 | 2007-06-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Gear actuator for a motor vehicle's gearing device has an electric motor, a rotating threaded spindle driven by this motor, a spindle nut driven by the threaded spindle and a gear selector shaft |
| CN101603592A (en) * | 2009-07-10 | 2009-12-16 | 重庆大学 | Electric automatic shift device of motor vehicle |
| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN103557316A (en) * | 2013-11-23 | 2014-02-05 | 合肥工业大学 | Screw-nut gear-shifting mechanism for automatic two-gear transmission of electric car |
| CN104329455A (en) * | 2014-11-11 | 2015-02-04 | 合肥工业大学 | Motor-driven planetary gear train gear shifting mechanism |
| CN112557028A (en) * | 2020-12-09 | 2021-03-26 | 江苏新能源汽车研究院有限公司 | Clutchless hybrid-driven gear shifting test bench and test method |
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