CN102818010B - The method controlling the dual-clutch transmission of vehicle - Google Patents
The method controlling the dual-clutch transmission of vehicle Download PDFInfo
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- CN102818010B CN102818010B CN201110411082.5A CN201110411082A CN102818010B CN 102818010 B CN102818010 B CN 102818010B CN 201110411082 A CN201110411082 A CN 201110411082A CN 102818010 B CN102818010 B CN 102818010B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 230000001276 controlling effect Effects 0.000 title claims abstract description 15
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 8
- 230000035939 shock Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 1
- 230000001340 slower Effects 0.000 description 1
Abstract
A kind of method that the invention discloses dual-clutch transmission controlling vehicle, it carries out in response to the deceleration of vehicle carrying out a series of downshift operation from previous speed shift to gear subsequently via current gear, described method may include that when from previous speed shift to current gear, clutch already at engagement state on previously gear is maintained at engagement state, until the instruction shifting into gear subsequently can be produced；After the instruction shifting into gear subsequently can produce, releasing clutch；And after clutch discharges, engage the change gear of gear subsequently.
Description
Technical field
A kind of method that present invention is generally related to dual-clutch transmission (DCT) controlling vehicle, more particularly, the present invention
Relate to such a technology, when carrying out gear shift in response to the deceleration of vehicle with DCT, which prevent sending out of shifting shock
Raw.
Background technology
With reference to Fig. 1, the downshift process of DCT when having vehicle deceleration (such as the stopping) of DCT will be retouched below
State.
When the vehicle is decelerating, gearbox controller produces instruction, to be shifted to be set as target gear by previous gear N+1
Current gear N group.Afterwards, before discharging previous gear N+1, gearbox controller is released on previous gear N+1 to be located
In the clutch of engagement state, then discharge the clutch of corresponding power shaft, so that this corresponding power shaft enters
To the state rotated freely.
Subsequently, when being shifted to gear N-1 subsequently, the clutch of power shaft is engaged provisionally, so that subsequently
Before the gear shift of gear N-1, the rpm (revolutions per minute) of power shaft is higher than the rpm of output shaft.Afterwards, the changing of gear N-1 subsequently
Shelves gear is engaged.Therefore, it is possible to prevent shifting shock.
In other words, if when engaging the change gear of gear N-1 subsequently, the rpm of power shaft is than the rpm of output shaft
Low, then synchronously complete or power from power shaft be transferred to output shaft start time, be related between power shaft and output shaft
The backlash (backlash) of element of power transmission (when the synchronization for engaging the change gear of gear N-1 subsequently is sent out
Time raw, this backlash has arranged in one direction) rearranged in the opposite direction.At this moment, can produce
Raw shifting shock and noise.In order to avoid such phenomenon described above, the technical configuration of Fig. 1 is: at gear N-1 subsequently
Before gear engages, clutch is engaged provisionally.
But, when gear is switched to gear N-1 subsequently from previous gear N+1 when, clutch the most a series of
Action (in this frequently a series of actions, clutch is released, engages and release again) may result in another kind not
Normal impact and noise.Further, the frequent movement of clutch can make the ruggedness of clutch and the actuator of clutch become
Difference.
The information being disclosed in this background of invention technology segment is merely intended to deepen the reason of the general background technology to the present invention
Solve, and be not construed as recognizing or imply in any form the most known to those skilled in the art existing of this information structure
Technology.
Summary of the invention
Therefore, the present invention keeps in mind the problems referred to above occurred in prior art, and it is an object of the invention to provide a kind of control
The method of the dual-clutch transmission of vehicle processed, its be possible to prevent when in response to have DCT vehicle deceleration and via currently
Gear when previous gear downshift to gear subsequently, abnormal impact of causing due to the frequent movement of clutch and making an uproar
Sound；Further, the present invention is possible to prevent impact and noise, described each element produced by the conversion that the backlash of each element arranges
Transmit relevant to the power between power shaft and output shaft；Therefore, the quality of shift property can improve, thus increases vehicle
Quietness and driver comfort, and increase the merchantability of vehicle；Further, the durability of clutch and the actuator of clutch
Durability can improve.
In one aspect of the invention, a kind of method of dual-clutch transmission controlling vehicle, it is in response to vehicle
Deceleration and carry out via current gear from a series of downshift operation of previous speed shift to gear subsequently, described method is permissible
Including: when from previous speed shift to current gear, by can be already at the clutch of engagement state on previously gear
It is maintained at engagement state, until the instruction shifting into gear subsequently can be produced；Can produce in the instruction shifting into gear subsequently
After life, releasing clutch；And after clutch discharges, engage the change gear of gear subsequently.
The method of the described dual-clutch transmission controlling vehicle may further include: at above-mentioned holding clutch
Period, discharge the change gear of previous gear.
In another aspect of the present invention, a kind of method of dual-clutch transmission controlling vehicle, it is in response to car
Deceleration and carried out coming from a series of downshift operation of previous speed shift to gear subsequently via current gear, it is permissible
Including: discharging the step of previous gear, the step of the previous gear of this release may include that when clutch may be at engagement state
While, discharge the change gear of previous gear, moving of the power shaft of this clutch change gear to being connected to previous gear
Power transmission is controlled；Shifting into the step of gear subsequently, this step shifting into gear subsequently may include that from previous gear
Middle release already at the clutch of engagement state, and can engage the change gear of gear subsequently.
Previously gear and when described current gear being carried out gear shift between gear subsequently, previously gear just can be
Engagement state can be continuously maintained in through being in the clutch of engagement state.
In another aspect of the present invention, a kind of method of dual-clutch transmission controlling vehicle, it is in response to car
Deceleration and carry out coming from a series of downshift operation of previous speed shift to gear subsequently via current gear, wherein, even
It is connected to can be controlled, so that power transmission state can to the clutch of previous gear and the power shaft that gear is the most relevant subsequently
Before being continuously kept to and just making the change gear of gear to be subsequently engaged via current gear.
By include in accompanying drawing herein and subsequently together with accompanying drawing for the concrete real of some principle of the present invention is described
Executing mode, further feature and advantage that methods and apparatus of the present invention is had will be clear from or more specifically be explained
Bright.
Accompanying drawing explanation
Fig. 1 is showing the view of the method for the dual-clutch transmission controlling vehicle according to conventional art.
Fig. 2 is the flow process of the method for the dual-clutch transmission controlling vehicle according to exemplary embodiment of the invention
Figure.
Fig. 3 is showing the view of the method controlling dual-clutch transmission according to exemplary embodiment of the invention.
It is to be appreciated that appended accompanying drawing shows the exemplifying various features of the ultimate principle of the present invention with being not drawn to
The technique of painting slightly simplified.The specific design feature of invention disclosed herein include such as concrete size, direction, position and
Profile will partly be determined by the environment specifically applied and to use.
In the drawings, running through several figures of accompanying drawing, reference quotes the same of the present invention or the portion being equal to
Point.
Detailed description of the invention
Quoting making each embodiment of the present invention in detail now, the example of these embodiments is displayed on
In accompanying drawing and be described as follows.Although the present invention will combine with illustrative embodiments and be described, it will be appreciated that this
Description is not intended to limit the invention to those illustrative embodiments.On the contrary, it is contemplated that not only cover these and show
Example embodiment, and within covering can be included in the spirit and scope of the present invention being defined by the appended claims
Various selection forms, modification, the equivalent form of value and other embodiment.
Hereinafter, with reference to appended accompanying drawing, the illustrative embodiments of the present invention will be described in detail.
Referring to figs. 2 and 3 shown, when carrying out changing from previous gear N+1 via current gear N in response to vehicle deceleration
The when that shelves arriving a series of downshift operation of gear N-1 subsequently, the invention provides a kind of according to the exemplary embodiment party of the present invention
The method of the double-clutch speed changer controlling vehicle of formula.The method comprise the steps that clutch keeps step S10, clutch is released
Stride rapid S30 and gear engagement step S40.In clutch keeps step S10, when gear is switched to from previous gear N+1
During current gear N, previously gear N+1 continues to be maintained up to be presented already at the clutch of engagement state and shifts into subsequently
After the instruction of gear N-1.In clutch release steps S30, it is presented the finger shifting into gear subsequently at clutch
After order, clutch is discharged.In gear engagement step S40, after clutch release steps S30, engage subsequently
The change gear of gear N-1.
Additionally, when gear is switched to current gear N from previous gear N+1, in order to discharge previous gear N+1, thus
Clutch performs to discharge gear release steps S20 of the change gear of previous gear N+1 during keeping step S10.
In other words, different from traditional technology, when being performed via current gear N from previous gear by clutch
The when that N+1 being shifted to a series of downshift operation of gear N-1 subsequently, previously gear N+1 already at engagement state from
Clutch is kept and is not released, until being just shifted to gear N-1 subsequently.Afterwards, clutch is just engaging subsequently
Discharge before the change gear of gear N-1, in order to shift into gear N-1 subsequently.Accordingly it is possible to prevent clutch moves frequently
Make, and be possible to prevent the shifting shock caused due to the change of backlash arrangement when shifting into gear N-1 subsequently, or
Person makes this impact minimize.
As reference, in the present embodiment, previous gear N+1 and subsequently gear are allocated identical power shaft, currently
Gear N is assigned another power shaft.Additionally, the clutch mentioned in present embodiment be configured to transmit power to right
Should be in the power shaft of previous gear N+1 and gear N-1 subsequently.
It is being switched to, subsequently during gear N-1, discharge previous gear N+1 and include from previous gear N+1 by gear:
Clutch discharges the change gear of previous gear N+1 while being in engagement state, this Clutch Control and is transferred to power shaft
Power transmission, this power shaft is connected to the change gear of previous gear N+1.
Include additionally, be shifted to gear N-1 subsequently: discharge from previous gear N+1 just already at the clutch of engagement state
Device, and engage the change gear of gear N-1 subsequently.Certainly, when being in previous gear N+1 and working as between gear N-1 subsequently
The when of front gear N, previously gear N+1 just clutch already at engagement state is continuously maintained in engagement state.
Meanwhile, as previously gear N+1, just clutch already at engagement state is continuously maintained in engagement state
Meanwhile, the moment of torsion of clutch transmission may be lower than the moment of torsion when power is transmitted by corresponding change gear.
In other words, because previously gear N+1 is in release conditions, and gear N-1 has not been entered into joint shape subsequently
State, so the power shaft having only to be suitable for making to be in free rotation state carries out the moment of torsion rotated.
If as it has been described above, the clutch being connected to be assigned to previous gear N+1 and the power shaft of gear subsequently is controlled
Before being made as making power transmission state to be held and just make the change gear of gear N-1 subsequently engaged via current gear N,
So when the change gear of gear N-1 subsequently is engaged to shift into gear N-1 subsequently, the rpm of power shaft is than output shaft
Rpm is high.Such structure is prevented from or substantially reduces the element between power shaft and the output shaft relevant to power transmission
The shifting shock that produces when rearranging in the opposite direction of backlash and noise.
It is to say, power shaft just separated with clutch before the change gear of gear subsequently engages.At this
Time, vehicle slows down.Therefore, when for engage gear subsequently change gear synchronize occur time power shaft rpm at least
Higher than the rpm of output shaft.Thus, with the change gear via gear subsequently and by power from each to output shaft of power shaft transmission
Backlash between element (such as change gear, clutch gear, sleeve, wheel hub etc.) is at power shaft operation output shaft
Arrange on direction.Such backlash ordered state even can remain to after gear switch completes, and clutch enters
Enter to engagement state, thus power is transmitted to output shaft from power shaft.Therefore, different from traditional technology, due between flank
Shifting shock and noise that gap arranges the conversion arranged in the opposite direction and causes can be prevented from.
Additionally, vibration, noise or impact that the conversion because being arranged by backlash is caused can be prevented from occurring, and
And because compared to traditional technology, the clutch action when release and joint can significantly decrease, so while clutch
The noise that the action of device causes and vibration can significantly decrease, and the most just resistance to the relevant element of operation of clutch
Property can improve, even the durability of clutch itself can also improve for a long time.
As it has been described above, the present invention be possible to prevent when in response to have DCT vehicle deceleration and via current gear from elder generation
When front gear downshift is to gear subsequently, the abnormal impact caused due to the frequent movement of clutch and noise.It addition, this
Invention is possible to prevent the conversion transmitting the backlash arrangement of relevant each element to the power between power shaft and output shaft to be produced
Raw impact and noise.Therefore, the quality of shift property can improve, thus increases quietness and the driver comfort of vehicle,
And increase the merchantability of vehicle.Further, the durability of the actuator of the durability of clutch and clutch can improve.
The description that above embodiment specific illustrative to the present invention is presented is in order at the purpose of illustration and description.Above
Description be not intended to become milli the most exhaustively, be not intended to limit the invention to disclosed precise forms, it is clear that root
It is all possible for much changing according to above-mentioned teaching and changing.Select illustrative embodiments and to be described be to explain this
Bright certain principles and actual application thereof, so that others skilled in the art are capable of and utilize that the present invention's is each
Plant illustrative embodiments and various selection form thereof and modification.The scope of the present invention be intended to by appended claims and
Its equivalents is limited.
Claims (5)
1. the method controlling the dual-clutch transmission of vehicle, it performs via current shelves in response to the deceleration of vehicle
Position and from a series of downshift operation of previous speed shift to gear subsequently, described method includes:
When from previous speed shift to current gear, clutch already at engagement state on previously gear is maintained at
Engagement state, until producing the instruction shifting into gear subsequently；
After the instruction shifting into gear subsequently produces, discharge this clutch；And
After clutch discharges, engage the change gear of gear subsequently.
The method of the dual-clutch transmission of control vehicle the most according to claim 1, farther includes:
In the period of the described clutch of above-mentioned holding, discharge the change gear of described previous gear.
3. the method controlling the dual-clutch transmission of vehicle, it performs via current shelves in response to the deceleration of vehicle
Position is from a series of downshift operation of previous speed shift to gear subsequently, wherein:
The step discharging previous gear includes: when clutch is in engagement state when, discharges the change gear of previous gear,
The power transmission of the power shaft of this clutch change gear to being connected to previous gear is controlled；
The step shifting into gear subsequently includes: discharges the clutch already at engagement state from previous gear, and connects
Close the change gear of gear subsequently.
The method of the dual-clutch transmission of control vehicle the most according to claim 3, the most previously gear and subsequently
When current gear being carried out gear shift between gear, described previous gear just already at engagement state clutch constantly
It is maintained at engagement state.
5. the method controlling the dual-clutch transmission of vehicle, it performs via current gear in response to the deceleration of vehicle
From a series of downshift operation of previous speed shift to gear subsequently,
Wherein, being connected to be controlled to the clutch of previous gear and the power shaft that gear is the most relevant subsequently, previously gear is
It is kept through being in the clutch of engagement state and is not released, so that power transmission state is continuously kept to just warp
Before being made the change gear of gear subsequently be engaged by current gear.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110055634A KR101305842B1 (en) | 2011-06-09 | 2011-06-09 | Double Clutch Transmission Control Method for Vehicle |
| KR10-2011-0055634 | 2011-06-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102818010A CN102818010A (en) | 2012-12-12 |
| CN102818010B true CN102818010B (en) | 2016-12-14 |
Family
ID=
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009768A (en) * | 1998-01-13 | 2000-01-04 | Toyota Jidosha Kabushiki Kaisha | Skip downshift control apparatus for automatic transmission |
| CN1526976A (en) * | 2003-02-21 | 2004-09-08 | 博格华纳公司 | Method for controlling double-clutch speed change device |
| CN101486316A (en) * | 2009-02-26 | 2009-07-22 | 上海汽车集团股份有限公司 | Method for implementing shift jump and down shift functions of double clutch speed variator |
| CN101858428A (en) * | 2009-04-09 | 2010-10-13 | 福特环球技术公司 | The gear shift control of dual clutch transmission |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009768A (en) * | 1998-01-13 | 2000-01-04 | Toyota Jidosha Kabushiki Kaisha | Skip downshift control apparatus for automatic transmission |
| CN1526976A (en) * | 2003-02-21 | 2004-09-08 | 博格华纳公司 | Method for controlling double-clutch speed change device |
| CN101486316A (en) * | 2009-02-26 | 2009-07-22 | 上海汽车集团股份有限公司 | Method for implementing shift jump and down shift functions of double clutch speed variator |
| CN101858428A (en) * | 2009-04-09 | 2010-10-13 | 福特环球技术公司 | The gear shift control of dual clutch transmission |
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