CN105042063B - A kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method - Google Patents
A kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method Download PDFInfo
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- CN105042063B CN105042063B CN201510413348.8A CN201510413348A CN105042063B CN 105042063 B CN105042063 B CN 105042063B CN 201510413348 A CN201510413348 A CN 201510413348A CN 105042063 B CN105042063 B CN 105042063B
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- Prior art keywords
- clutch
- control
- torque
- electromotor
- target
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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
- 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
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
-
- 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
Abstract
The present invention provides a kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method, it is first determined whether downshifting for positive-torque order；If then when front clutch proceeds by synchronization control, while judging whether current vehicle condition possesses electromotor and coordinate control；Judge whether input shaft rotating speed and the difference of rotating speed of target reach setting limit value；Judge described after front clutch completes Synchronization Control, judge whether the target gear completes pre-hung shelves, and whether the target clutch completes oil-filled；Into moment of torsion alternating phases and gearshift post-processing stages.Wet dual-clutch automatic transmission positive-torque order downshift control method provided by the present invention, takes full advantage of rotating speed request and the torque request of electromotor, to reduce and the purpose of synchronization is reached by way of reducing clutch pressure and facilitate implementation.
Description
Technical field
The invention belongs to change speed gear box technical field, particularly relates to a kind of wet-type dual-clutch change speed gear box positive-torque downshift control
Method.
Background technology
Typical wet double clutch type automatic gearbox is coaxial nested by two or the clutch that is arranged in parallel, it is coaxial and
Two input shafts or two output shafts being arranged in parallel of inside and outside nested arrangement, the multiple lock unit dresses being arranged on output shaft
Put, multiple selector forks and 1 differential mechanism are constituted.Odd, even several grades of input gears of variator are arranged in two inputs
On axle, by the switching and different lock unit actions of two clutches, torque conversion and output are realized via different output shafts.
The design of automatic gear-box is in addition to considering driver comfort, it is necessary to will meet the customer's need for pursuing dynamic property
Ask.It is well known that low-grade location is better than the acceleration of high tap position, when high tap position is travelled, driver expects to obtain more power
Accelerate, the power for dropping 1 grade to provide is be provided, especially in operating mode of overtaking other vehicles, use 1 grade of drop of stepping on the gas more.
The content of the invention
It is an object of the invention to provide a kind of positive-torque order downshift control method of wet-type dual-clutch change speed gear box, passes through
The technical program, considers control of engine speed and moment of torsion control, makes full use of engine request, reduce as far as possible to from
The blood pressure lowering control of clutch reaches the purpose of synchronization.
The present invention is achieved by the following technical solutions：
A kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method,
Determine whether that positive-torque order downshifts；
If positive-torque order downshifts, then when front clutch proceeds by synchronization control, the current clutch is closed
Device synovial membrane is controlled；
Meanwhile, target gear pre-hung shelves, target clutch start pre-oiling；The target clutch is oil-filled to semi-linkage
Point；
Judge whether input shaft rotating speed and the difference of rotating speed of target reach setting limit value；
If reaching the setting limit value, the current clutch rotational speed Synchronization Control is completed；If being not reaching to described setting
Threshold value；It is described when front clutch proceeds Synchronization Control；
After the completion of judging the current clutch synchronization control, judge whether the target gear completes pre-hung shelves, and institute
State whether target clutch completes oil-filled；
If judging, the target gear completes pre-hung shelves, and the target clutch completes oil-filled, then carry out clutch torsion
Square is alternately controlled, i.e., described current clutch moment of torque declines, and the target clutch moment of torque rises；When the target clutch is turned round
When square is increased beyond current engine torque, the clutch moment of torque replaces control to be completed；
If judging, the target gear pre-hung shelves are not completed, and the target clutch does not complete oil-filled, then described
Controlled when front clutch carries out sliding wear with stably current Synchronization Control state；
It is after the completion of the clutch moment of torque is alternately controlled, described when front clutch pre-oiling, then fully open；It is described
Target clutch carries out micro- sliding wear control, and the current gear is de- to be back to neutral gear.
When the positive-torque order downshift is that the electromotor is output as positive-torque, and current gear-target gear
=1.
It is described when front clutch carry out synchronization control while, also include and judge whether current vehicle condition has
Preparation motivation coordinates control；
If judging, current vehicle condition possesses electromotor and coordinates control, and the electromotor enters into rotating speed or torque request
Control；Simultaneously the ability of the electromotor under current working is estimated；If the ability of the assessment electromotor is sufficient, enter
Enter to rotating speed request and control；If the scarce capacity of the assessment electromotor, enters into torque request control；
If judging, Current vehicle does not possess electromotor and coordinates control, carries out coordinating control gear shift flow process without electromotor.
Carrying out coordinating without electromotor in control gear shift flow process, it is described when the synchronization control of front clutch is by control
System is described when the pressure of front clutch is realized.
Coordinate under control in the electromotor, described when front clutch carries out synchronization control, driver comes loose
Gas pedal, the electromotor are coordinated control and are closed.
Carrying out coordinating without electromotor in control gear shift flow process, described when front clutch carries out synchronization control,
Driver comes loose gas pedal, then directly exit positive-torque downshift.
The invention has the beneficial effects as follows：
1st, wet dual-clutch automatic transmission positive-torque order downshift control method provided by the present invention, makes full use of
The rotating speed request of electromotor and torque request, reduce the mesh that synchronization is reached by way of reducing clutch pressure
, therefore facilitate implementation.
2nd, wet dual-clutch automatic transmission positive-torque order downshift control method provided by the present invention, from different angles
Degree considers that driver intention changes the impact to the gearshift, can more meet the drive demand of driver.
3rd, wet dual-clutch automatic transmission positive-torque order downshift control method provided by the present invention, whether
There is electromotor and coordinate control, after the synchronization stage terminates, have the synovial membrane control of clutch, it is ensured that synchronization, effectively
Avoid driving or the problems such as rotating speed drops.
4th, wet dual-clutch automatic transmission positive-torque order downshift control method provided by the present invention, same in rotating speed
During step, target gear is hung shelves control and the oil-filled control of target clutch and is synchronously carried out, and shortens shift time.
Description of the drawings
Fig. 1 is positive-torque of the present invention order downshift control logic flow chart；
Fig. 2 coordinates control positive-torque order downshift control logic flow chart without electromotor for the present invention.
Specific embodiment
By the following examples describing technical scheme in detail, below example is only example, is only capable of
For explaining and illustrating technical scheme, and it is not to be construed as the restriction to technical solution of the present invention.
The present invention provides a kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method, such as Fig. 1 and Fig. 2 institutes
Show.
Determine whether that positive-torque order downshifts；The key technology of the application is that, when electromotor exports positive-torque, occur
The two neighboring gear coaxial, by the high-grade control method to during low-grade switching, i.e., is switched to 5 grades, is cut by 5 grades by 6 grades
4 grades are changed to, 3 grades are switched to by 4 grades, 2 grades being switched to by 3 grades or by 2 grades of control methods being switched to during 1 grade, therefore, this
The technical scheme of application is not particularly suited for control method during other gear switches.Therefore, judge whether to meet under the application
Carry moment of torsion order downshift condition be：When the electromotor is output as positive-torque, and current gear-target gear=1, if
It is the technical scheme for meeting the application, in the present embodiment, with reference to accompanying drawing 1, here is come to this so that 5 grades are switched to 4 grades as an example
The positive-torque order downshift control process of application is illustrated.
After being defined as positive-torque order and downshifting, then when front clutch proceeds by synchronization control, simultaneously close off
It is described when front clutch synovial membrane control；
Target gear pre-hung shelves, target clutch start pre-oiling.
When above-mentioned current clutch rotational speed Synchronization Control is carried out, because will use electromotor coordinates control, therefore need
Whether to possess electromotor coordination control to judge to current vehicle condition；
If judging, current vehicle condition possesses electromotor and coordinates control, and the electromotor enters into rotating speed or torque request
Control；Simultaneously the ability of the electromotor under current working is estimated；If the ability of the assessment electromotor is sufficient, enter
Enter to rotating speed request and control；If the scarce capacity of the assessment electromotor, enters into torque request control.Entering into rotating speed
During request control, need constantly to carry out electromotor capability evaluation, if finding the scarce capacity of electromotor, directly asked by rotating speed
Control switchs to torque request control.
If judging, Current vehicle does not possess electromotor and coordinates control, carries out coordinating control gear shift flow process (such as without electromotor
Shown in Fig. 2).
Coordinate, in control process, carrying out in synchronization control process when front clutch, the mesh possessing electromotor
Mark clutch is oil-filled to semi-linkage point；After above-mentioned instruction sends,
Judge whether input shaft rotating speed and the difference of rotating speed of target reach setting limit value；
If reaching the setting limit value, the current clutch rotational speed Synchronization Control is completed；If being not reaching to described setting
Threshold value；It is described when front clutch proceeds Synchronization Control；
Judge described after front clutch completes Synchronization Control, judge whether the target gear completes pre-hung shelves, and institute
State whether target clutch completes oil-filled；
If judging, the target gear completes pre-hung shelves, and the target clutch completes oil-filled, then carry out clutch torsion
Square is alternately controlled, i.e., described current clutch moment of torque declines, and the target clutch moment of torque rises；When the target clutch is turned round
When square is increased beyond current engine torque, the clutch moment of torque replaces control to be completed；
If judging, the target gear pre-hung shelves are not completed, and the target clutch does not complete oil-filled, then described
Controlled when front clutch carries out sliding wear with stably current Synchronization Control state；
It is after the completion of the clutch moment of torque is alternately controlled, described when front clutch pre-oiling, then fully open；It is described
Target clutch carries out micro- sliding wear control, and the current gear is de- to be back to neutral gear.
As shown in Fig. 2 work as being judged as that Current vehicle does not possess electromotor and coordinates control, then carry out coordinating to control without electromotor
Flow process：
By control when front clutch pressure reach synchronization control purpose, in the process, the target from
Clutch is oil-filled to semi-linkage point；After above-mentioned instruction sends,
Judge whether input shaft rotating speed and the difference of rotating speed of target reach setting limit value；
If reaching the setting limit value, the current clutch rotational speed Synchronization Control is completed；If being not reaching to described setting
Threshold value；It is described when front clutch proceeds Synchronization Control；
Judge described after front clutch completes Synchronization Control, judge whether the target gear completes pre-hung shelves, and institute
State whether target clutch completes oil-filled；
If judging, the target gear completes pre-hung shelves, and the target clutch completes oil-filled, then carry out clutch torsion
Square is alternately controlled, i.e., described current clutch moment of torque declines, and the target clutch moment of torque rises；When the target clutch is turned round
When square is increased beyond current engine torque, the clutch moment of torque replaces control to be completed；
If judging, the target gear pre-hung shelves are not completed, and the target clutch does not complete oil-filled, then described
Controlled when front clutch carries out sliding wear with stably current Synchronization Control state；
It is after the completion of the clutch moment of torque is alternately controlled, described when front clutch pre-oiling, then fully open；It is described
Target clutch carries out micro- sliding wear control, and the current gear is de- to be back to neutral gear.
Whether there is electromotor to coordinate control or coordinate to control without electromotor, in above two control mode, working as
Front clutch carry out synchronization control when, driver come loose gas pedal when control method be：
There is electromotor to coordinate under control, described when front clutch carries out synchronization and controls, driver comes loose oil
Door pedal, the electromotor are coordinated control and are closed.
Carrying out coordinating without electromotor in control gear shift flow process, described when front clutch carries out synchronization control,
Driver comes loose gas pedal, then directly exit positive-torque downshift.
While it have been described that the technical scheme of the application, but, technical scheme of the those skilled in the art in the application
Enlightenment under, can be improved, replace or deform, such improvement, replacement or deformation should be in the guarantor of the application
In the range of shield.
Claims (5)
1. a kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method, it is characterised in that：
Determine whether that positive-torque order downshifts；
If positive-torque order downshifts, then when front clutch proceeds by synchronization control, close described when front clutch is slided
Film is controlled；
Meanwhile, target gear pre-hung shelves, target clutch start pre-oiling；The target clutch is oil-filled to semi-linkage point；
Judge whether input shaft rotating speed and the difference of rotating speed of target reach setting limit value；
If reaching the setting limit value, the current clutch rotational speed Synchronization Control is completed；If being not reaching to the setting limit
Value；It is described when front clutch proceeds Synchronization Control；
After the completion of judging the current clutch synchronization control, judge whether the target gear completes pre-hung shelves, and the mesh
Whether mark clutch completes oil-filled；
If judging, the target gear completes pre-hung shelves, and the target clutch completes oil-filled, then carry out clutch moment of torque friendship
For control, i.e., described current clutch moment of torque declines, and the target clutch moment of torque rises；When on the target clutch moment of torque
When rising more than current engine torque, the clutch moment of torque replaces control to be completed；
If judging, the target gear pre-hung shelves are not completed, and the target clutch does not complete oil-filled, then described current
Clutch carries out sliding wear and controls with stably current Synchronization Control state；
It is after the completion of the clutch moment of torque is alternately controlled, described when front clutch pre-oiling, then fully open；The target
Clutch carries out micro- sliding wear control, and the current gear is de- to be back to neutral gear；
It is described carry out synchronization and control when front clutch while, also include and judge whether current vehicle condition possesses
Motivation coordinates control；
If judging, current vehicle condition possesses electromotor and coordinates control, and the electromotor enters into rotating speed or torque request control
System；Simultaneously the ability of the electromotor under current working is estimated；If the ability of the assessment electromotor is sufficient, enter
Control to rotating speed request；If the scarce capacity of the assessment electromotor, enters into torque request control；
If judging, Current vehicle does not possess electromotor and coordinates control, carries out coordinating control gear shift flow process without electromotor.
2. wet-type dual-clutch change speed gear box positive-torque according to claim 1 order downshift control method, it is characterised in that：
When the positive-torque order downshift is that the electromotor is output as positive-torque, and current gear-target gear=1.
3. wet-type dual-clutch change speed gear box positive-torque according to claim 1 order downshift control method, it is characterised in that：
Carrying out coordinating without electromotor in control gear shift flow process, it is described when the synchronization control of front clutch is worked as by control is described
The pressure of front clutch is realized.
4. wet-type dual-clutch change speed gear box positive-torque according to claim 1 order downshift control method, it is characterised in that：
Coordinate under control in the electromotor, when front clutch carries out synchronization and controls, driver comes loose gas pedal described,
The electromotor coordinates control and cuts out.
5. wet-type dual-clutch change speed gear box positive-torque according to claim 1 order downshift control method, it is characterised in that：
Carrying out coordinating without electromotor in control gear shift flow process, described when front clutch carries out synchronization control, driver pine
Fall gas pedal, then directly exit positive-torque downshift.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510413348.8A CN105042063B (en) | 2015-07-13 | 2015-07-13 | A kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method |
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| CN201510413348.8A CN105042063B (en) | 2015-07-13 | 2015-07-13 | A kind of wet-type dual-clutch change speed gear box positive-torque order downshift control method |
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| CN105042063B true CN105042063B (en) | 2017-04-05 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105240515B (en) * | 2015-11-17 | 2017-07-28 | 安徽江淮汽车集团股份有限公司 | A kind of wet-type dual-clutch transmission synchronization control method |
| CN105644562B (en) * | 2016-02-25 | 2018-03-20 | 安徽江淮汽车集团股份有限公司 | A kind of dual-clutch transmission wriggling control method |
| CN106938648B (en) * | 2017-04-07 | 2019-06-04 | 安徽江淮汽车集团股份有限公司 | The power downshift scaling method and system of double clutch gearbox |
| CN107542914A (en) * | 2017-10-17 | 2018-01-05 | 安徽江淮汽车集团股份有限公司 | A kind of wet dual-clutch automatic transmission is stepped on the gas the control method of downshift |
| CN109667926B (en) * | 2019-01-23 | 2020-01-10 | 重庆长安汽车股份有限公司 | Low-speed pre-gear-shifting method of wet type double-clutch automatic transmission |
| CN110778701B (en) * | 2019-09-26 | 2021-08-20 | 潍柴动力股份有限公司 | Control method and control device for vehicle transmission |
| CN110696831B (en) * | 2019-10-31 | 2021-04-16 | 浙江吉利汽车研究院有限公司 | Gear shifting control method and device for pure electric mode of hybrid electric vehicle |
| CN113074248B (en) * | 2020-01-06 | 2022-07-26 | 广州汽车集团股份有限公司 | Automatic transmission downshift control method and computer-readable storage medium |
| CN112324905B (en) * | 2020-11-13 | 2022-02-18 | 中国第一汽车股份有限公司 | Gear engagement control method |
| CN112648308B (en) * | 2020-12-30 | 2022-04-29 | 蜂巢传动科技河北有限公司 | Control method, device and system for adjusting speed difference of two ends of synchronizer based on clutch |
| CN115217958B (en) * | 2021-12-03 | 2024-03-15 | 广州汽车集团股份有限公司 | Vehicle upshift control method, device and storage medium |
| CN115217951B (en) * | 2022-02-24 | 2023-07-21 | 广州汽车集团股份有限公司 | Dual clutch shift control method, device, electronic equipment and readable medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0899553A (en) * | 1994-09-29 | 1996-04-16 | Kayaba Ind Co Ltd | Four wheel driving device |
| JPH10122332A (en) * | 1996-10-18 | 1998-05-15 | Keihin Corp | Continuously variable transmission |
| CN102230532B (en) * | 2011-04-08 | 2014-04-09 | 浙江万里扬变速器股份有限公司 | Double-clutch automatic transmission shift control method |
| CN102996785B (en) * | 2012-12-19 | 2015-08-19 | 安徽江淮汽车股份有限公司 | The shift control method of wet-type dual-clutch |
| KR101510015B1 (en) * | 2013-12-18 | 2015-04-07 | 현대자동차주식회사 | Shifing control method for vehicle with dct |
| CN104595477B (en) * | 2015-02-04 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | Two grades of control methods drop in a kind of wet-type dual-clutch change speed gear box positive-torque that is used for |
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