CN105351512B - A kind of Transmission System gearbox downshift process clutch control method - Google Patents
A kind of Transmission System gearbox downshift process clutch control method Download PDFInfo
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- CN105351512B CN105351512B CN201510763303.3A CN201510763303A CN105351512B CN 105351512 B CN105351512 B CN 105351512B CN 201510763303 A CN201510763303 A CN 201510763303A CN 105351512 B CN105351512 B CN 105351512B
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- clutch
- control
- gearbox
- signal
- transmission system
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch
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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
- F16H2306/00—Shifting
- F16H2306/40—Shifting activities
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The present invention relates to a kind of Transmission System gearbox downshift process clutch control methods, including：(1) collection vehicle signal；(2) judge whether vehicle needs to lift shelves according to collected signals of vehicles；(3) if vehicle needs to carry out lifting shelves, upshift or downshift are judged according to shift control strategy；(4) judge that vehicle needs the operating mode for upshifing or downshifting according to the shift control strategy, carry out clutch separation control；(5) shift control is carried out according to clutch separation control；(6) it after confirmation is shifted gears successfully, carries out clutch and combines control.Technical scheme realizes that differentiation when AMT gearboxes downshift to clutch controls, and improves the service life of synchromesh unit.
Description
Technical field
The present invention relates to the gearbox control fields of vehicle, are more particularly to a kind of Transmission System gearbox downshift
Process clutch control method.
Background technology
During 12, as the Ministry of Science and Technology and automobile industry are promoted the emphasis of commercial car AMT gearboxes and energetically
It fosters, the research and development of AMT gearboxes and promotes like a raging fire have developed.Each main engine plants and gearbox manufacturing enterprise successively research and develop
Go out more money model machines and carried out a large amount of real vehicle certification test, the Commercial Prospect of AMT gearboxes is more and more apparent, will become me
The important directions that state's commercial car field gearbox automatic technology is advanced, very important effect is played to the development of commercial car.
The gearshift procedure of AMT gearboxes is identical as manual transmission, and when gear shift first detaches clutch, upshift or downshift, then
In conjunction with clutch, gear shift between the traveling of vehicle is realized.Since AMT gearbox main tank structures are stabilized shaft gearbox, each gear exists
Compare between certain, thus cause, in downshift, transmission input shaft rotating speed needs to improve vehicle, but clutch has divided at this time
From transmission input shaft rotating speed is continuously decreasing.Conventional control method promotes input shaft mainly by the wear smooth of synchromesh unit
Rotating speed finally makes transmission input shaft reach synchronous with output shaft, realizes downshift gear shift.Due to commercial car clutch passive components
Relatively large with input shaft inertia, the abrasion of acceleration shifting synchronizer is reduced synchromesh unit by the downshift gear shift of multifrequency time
Service life provides a kind of downshift process clutch control method, reduces the wear smooth of synchromesh unit, to promoting synchromesh unit
Service life will play very big help, the commercialization process of AMT gearboxes can be accelerated.
Invention content
The object of the present invention is to provide a kind of Transmission System gearbox downshift process clutch control methods, realize
The differentiation of clutch is controlled when AMT gearboxes downshift, improves the service life of synchromesh unit.
To achieve the above object, the present invention uses following technical scheme：A kind of Transmission System gearbox downshifted
Journey clutch control method, including：
(1) collection vehicle signal；
(2) judge whether vehicle needs to lift shelves according to collected signals of vehicles；
(3) if vehicle needs to carry out lifting shelves, upshift or downshift are judged according to shift control strategy；
(4) judge that vehicle needs the operating mode for upshifing or downshifting according to the shift control strategy, carry out clutch separation control
System；The clutch separation control includes the control of normal gear change clutch separation and the control of decelerating downshift clutch separation；It is described
The control of normal gear change clutch separation controls clutch separation, carries out plucking shelves control to the gearbox according to shift control strategy
System；
The deceleration shifting clutch separation control controls the separation and combination of clutch according to shift control strategy；
When the clutch separation, gearbox is carried out to pluck a grade control；When the clutch combines, transmission input shaft rotating speed is adjusted
To rotating speed of target；
(5) shift control is carried out according to clutch separation control；
(6) it after confirmation is shifted gears successfully, carries out clutch and combines control.
Signals of vehicles in the step (1) includes brake signal, speed signal, engine rotational speed signal, input shaft rotation
Fast signal, accelerator opening amount signal, gear selection position signal, shift pattern signal and clutch position signal.
The step (2) judges current vehicle gear according to the gear selection position signal and shift pattern signal；According to institute
It states accelerator opening amount signal, engine rotational speed signal, speed signal and brake signal and judges whether vehicle needs to lift shelves；Such as vehicle
It needs to lift shelves, then enters step (3).
If the vehicle need not lift shelves, then signals of vehicles acquisition is re-started back to step (1).
In the step (3), judged if it is downshift operating mode, then to judge that vehicle accelerator is opened according to shift control strategy
Degree then enters the step (4) and carries out the normal gear change clutch separation control when the accelerator open degree is more than given threshold
System；If accelerator open degree is less than or equal to the given threshold, enters the decelerating downshift clutch separation and control.
In normal gear change clutch separation control in the step (4), after confirming that the gearbox plucks shelves, enter
The step (5).
In deceleration shifting clutch separation control in the step (4), according to shift control strategy, clutch is controlled
Separation carries out gearbox to pluck a grade control after confirming that the clutch is kept completely separate；It is defeated that new gear is calculated according to current vehicle speed
Enter axis rotating speed of target, in conjunction with the clutch, adjustment input shaft rotating speed finally detaches clutch, when true again to rotating speed of target
Recognize after clutch is kept completely separate, into the step (5).
The step (5) is moved according to the physical location and input shaft of gear shifting oil cylinder in gearshift procedure and the speed difference of output shaft
State calculates berth-changing strength in real time, and gearshift control is carried out to gearbox, after confirming gear shift success, into the step (6).
The step (6) is according to the speed difference of engine speed and speed, dynamic calculating clutch combination rule, control electromagnetism
Valve events realize the steady combination of clutch.
With immediate prior art ratio, the present invention, which provides technical solution, has following excellent effect
1, for technical solution of the present invention when vehicle downshifts, the identification being intended to downshift by control algolithm screens out deceleration
The operating mode that downshifts and anxious acceleration downshift operating mode；
2, technical solution of the present invention accelerates downshift operating mode, the control strategy for taking clutch once to combine to avoid for anxious
Since the secondary combination of clutch causes shift time long when anxious acceleration downshift operating mode, the power performance of vehicle is influenced；
3, technical solution of the present invention takes the control strategy of the secondary combination of clutch, reduction to change decelerating downshift operating mode
The synchronization speed difference of shelves synchronizer, improves the service life of synchromesh unit；
4, technical solution of the present invention will play positive impetus to the commercialization process for accelerating AMT gearboxes；
5, technical solution of the present invention can be applied in the AMT gearbox control systems design of any vehicle.
Description of the drawings
Fig. 1 is flow chart of the embodiment of the present invention；
Fig. 2 is present invention method detail flowchart.
Specific implementation mode
With reference to embodiment, the invention will be described in further detail.
Embodiment 1：
The invention of this example provides a kind of Transmission System gearbox downshift process clutch control method, including as schemed
Shown in 1 and Fig. 2：
(101) signals of vehicles acquires；Switching value, analog quantity and frequency quantity signal are acquired, including：Brake signal, speed letter
Number, engine rotational speed signal, input shaft rotating speed signal, accelerator opening amount signal, gear selection position signal, shift pattern signal, clutch
Device position signal etc..
(102) vehicle lifting shelves judge；Judge current gear, foundation according to gear selection position signal, shift pattern signal etc.
Accelerator opening amount signal, engine rotational speed signal, speed signal, brake signal etc. judge whether vehicle needs to lift shelves.Such as vehicle
Shelves need not be lifted, signals of vehicles acquisition is re-started back to step (101)；If vehicle needs to lift shelves, dropped into vehicle
Shelves are intended to judgment step (103).
(103) vehicle downshift is intended to judge；After judging that vehicle needs to lift shelves, determine whether according to control strategy
Downshift operating mode, if not downshift operating mode, then program enter normal gear change clutch separation rate-determining steps (104)；If it is drop
Shelves operating mode, then judge accelerator open degree, when accelerator open degree is more than given threshold (this algorithm temporarily takes 85%), then enters normal gear change
Clutch separation rate-determining steps (104) module；When if accelerator open degree were not more than given threshold (this algorithm temporarily takes 85%), journey
Sequence enters decelerating downshift clutch separation rate-determining steps (105)；
(104) normal gear change clutch separation controls；According to shift control strategy, control clutch separation, confirm from
After clutch is kept completely separate, gearbox is carried out to pluck a grade control, after shelves are plucked in gearbox confirmation, program enters gearshift control step
(106)；
(105) deceleration shifting clutch separation controls；According to shift control strategy, control clutch separation, confirm from
After clutch is kept completely separate, gearbox is carried out to pluck a grade control, calculates new gear input shaft rotating speed of target according to current vehicle speed, then
In conjunction with clutch, adjustment input shaft rotating speed finally detaches clutch again to rotating speed of target, when confirmation clutch is kept completely separate
Afterwards, program enters gearshift control step (106)；
(106) gearshift control；According to the physical location of gear shifting oil cylinder and the speed of input shaft and output shaft in gearshift procedure
Difference, dynamic realtime calculate berth-changing strength, and gearshift control is carried out to gearbox, and after confirming gear shift success, program enters clutch knot
Close rate-determining steps (107)；
(107) clutch combines control：According to the speed difference of engine speed and speed, dynamic calculates clutch and combines rule
Rule controls electromagnetism valve events, realizes the steady combination of clutch.
Signals of vehicles acquisition is mainly acquired by the acquisition module in former vehicle-mounted gear box control unit (TCU)；
Vehicle lifting shelves judge, vehicle downshift is intended to judge mainly by former vehicle-mounted gear box control unit (TCU)
Microcontroller is handled；
The control of normal gear change clutch separation, the control of deceleration shifting clutch separation, gearshift control, clutch combine control
Drive control is mainly carried out by the drive module in former vehicle-mounted gear box control unit (TCU).
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment although should understand that：It still can be to the specific implementation mode of the present invention
It is modified or replaced equivalently, these are without departing from any modification of spirit and scope of the invention or equivalent replacement, in Shen
Within the claims of the present invention that please be pending.
Claims (8)
- The process clutch control method 1. a kind of Transmission System gearbox downshifts, it is characterised in that：Include the following steps：(1) collection vehicle signal；(2) judge whether vehicle needs to lift shelves according to collected signals of vehicles；(3) if vehicle needs to carry out lifting shelves, upshift or downshift are judged according to shift control strategy；(4) judge that vehicle needs the operating mode for upshifing or downshifting according to the shift control strategy, carry out clutch separation control；Institute It includes the control of normal gear change clutch separation and the control of decelerating downshift clutch separation to state clutch separation control；It is described normally to change The control of shelves clutch separation controls clutch separation, carries out plucking a grade control to the gearbox according to shift control strategy；The deceleration shifting clutch separation control controls the separation and combination of clutch according to shift control strategy；Described When clutch separation, gearbox is carried out to pluck a grade control；When the clutch combines, adjustment transmission input shaft rotating speed to mesh Mark rotating speed；(5) shift control is carried out according to clutch separation control；(6) it after confirmation is shifted gears successfully, carries out clutch and combines control；In the step (3), judged if it is downshift operating mode, then to judge vehicle accelerator aperture according to shift control strategy, when When the accelerator open degree is more than given threshold, then enters the step (4) and carry out the normal gear change clutch separation control；Such as When fruit accelerator open degree is less than or equal to the given threshold, then enters the decelerating downshift clutch separation and control.
- The process clutch control method 2. a kind of Transmission System gearbox as described in claim 1 downshifts, feature It is：Signals of vehicles in the step (1) includes brake signal, speed signal, engine rotational speed signal, input shaft rotating speed letter Number, accelerator opening amount signal, gear selection position signal, shift pattern signal and clutch position signal.
- The process clutch control method 3. a kind of Transmission System gearbox as claimed in claim 2 downshifts, feature It is：The step (2) judges current vehicle gear according to the gear selection position signal and shift pattern signal；According to the oil Door opening amount signal, engine rotational speed signal, speed signal and brake signal judge whether vehicle needs to lift shelves；As vehicle needs Shelves are lifted, then are entered step (3).
- The process clutch control method 4. a kind of Transmission System gearbox as claimed in claim 3 downshifts, feature It is：If the vehicle need not lift shelves, then signals of vehicles acquisition is re-started back to step (1).
- The process clutch control method 5. a kind of Transmission System gearbox as described in claim 1 downshifts, feature It is：In normal gear change clutch separation control in the step (4), after confirming that the gearbox plucks shelves, into institute State step (5).
- The process clutch control method 6. a kind of Transmission System gearbox as described in claim 1 downshifts, feature It is：In deceleration shifting clutch separation control in the step (4), according to shift control strategy, control clutch point From after confirming that the clutch is kept completely separate, carrying out plucking a grade control to gearbox；New gear input is calculated according to current vehicle speed Axis rotating speed of target, in conjunction with the clutch, adjustment input shaft rotating speed finally detaches clutch, works as confirmation again to rotating speed of target After clutch is kept completely separate, into the step (5).
- The process clutch control method 7. a kind of Transmission System gearbox as described in claim 1 downshifts, feature It is：For the step (5) according to the physical location and input shaft of gear shifting oil cylinder in gearshift procedure and the speed difference of output shaft, dynamic is real When calculate berth-changing strength, to gearbox carry out gearshift control, confirm gear shift success after, into the step (6).
- The process clutch control method 8. a kind of Transmission System gearbox as described in claim 1 downshifts, feature It is：The step (6) is according to the speed difference of engine speed and speed, dynamic calculating clutch combination rule, control solenoid valve Action, realizes the steady combination of clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763303.3A CN105351512B (en) | 2015-11-10 | 2015-11-10 | A kind of Transmission System gearbox downshift process clutch control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763303.3A CN105351512B (en) | 2015-11-10 | 2015-11-10 | A kind of Transmission System gearbox downshift process clutch control method |
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| Publication Number | Publication Date |
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| CN105351512A CN105351512A (en) | 2016-02-24 |
| CN105351512B true CN105351512B (en) | 2018-09-14 |
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| CN107366740B (en) * | 2017-05-22 | 2018-11-09 | 中国第一汽车股份有限公司 | A kind of clutch oil-filled duration control method in high-power AT shift processes |
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| CN109606371B (en) * | 2018-12-17 | 2020-12-29 | 安徽江淮汽车集团股份有限公司 | Engine and transmission coordinated control method in gear shifting process |
| CN110816297A (en) * | 2019-12-09 | 2020-02-21 | 八方电气(苏州)股份有限公司 | Electric motorcycle automatic speed changing system and control method thereof |
| CN112525524B (en) * | 2020-11-30 | 2022-05-03 | 奇瑞汽车股份有限公司 | Automatic gear shifting device and automatic gear shifting method of manual transmission |
| CN113027942B (en) * | 2021-03-03 | 2022-08-09 | 中国北方车辆研究所 | AT clutch control method under braking condition |
| CN113639034A (en) * | 2021-08-23 | 2021-11-12 | 安徽江淮汽车集团股份有限公司 | Gear shifting control method for 2-speed AMT (automated mechanical Transmission) transmission of commercial vehicle |
| CN113898728A (en) * | 2021-08-31 | 2022-01-07 | 胡冬桂 | Automobile gear control method and device |
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| US5393278A (en) * | 1992-05-02 | 1995-02-28 | Toyota Jidosha Kabushiki Kaisha | Shift control apparatus for shifting up transmission upon re-acceleration following deceleration of vehicle |
| US5733223A (en) * | 1995-08-09 | 1998-03-31 | Toyota Jidosha Kabushiki Kaisha | Lock-up clutch slip control during vehicle deceleration which is terminated at different transmission input speeds depending upon vehicle running condition |
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| CN103075507A (en) * | 2013-01-18 | 2013-05-01 | 浙江吉利汽车研究院有限公司杭州分公司 | Control method of neutral position shifting of automatic gearbox during vehicle traveling |
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2015
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Patent Citations (7)
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| JPH05215227A (en) * | 1992-02-06 | 1993-08-24 | Mitsubishi Electric Corp | Automatic transmission control device |
| US5393278A (en) * | 1992-05-02 | 1995-02-28 | Toyota Jidosha Kabushiki Kaisha | Shift control apparatus for shifting up transmission upon re-acceleration following deceleration of vehicle |
| US5733223A (en) * | 1995-08-09 | 1998-03-31 | Toyota Jidosha Kabushiki Kaisha | Lock-up clutch slip control during vehicle deceleration which is terminated at different transmission input speeds depending upon vehicle running condition |
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| CN105351512A (en) | 2016-02-24 |
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