CN105465290B - A kind of eight fast double-clutch speed changers and its shift control method - Google Patents
A kind of eight fast double-clutch speed changers and its shift control method Download PDFInfo
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Abstract
A kind of eight fast double-clutch speed changers and its shift control method, including：First input shaft, the first input clutch, one grade of driving gear, the first synchronizer, seven grades of driving gears and third speed drive gear are installed, wherein one grade of driving gear shares with five grades of driving gears；Second input shaft, is provided with the second input clutch, fourth gear driving gear, the second synchronizer, two grades of driving gears, eight grades of driving gears, the 3rd synchronizer and reverse driving gear, and two grades of driving gears share with six grades of driving gears；Output shaft, fourth gear driven gear, two grades of driven gears, eight grades of driven gears, reverse gear driven gear, first speed driven gear, seven grades of driven gears, third gear driven gear and the 4th synchronizer are installed, first speed driven gear shares with five grades of driven gears, and two grades of driven gears share with six grades of driven gears.Using the speed changer and its shift control method, realize that simple in construction, parts are less, less eight fast double-clutch speed changer of space-consuming.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of eight fast double-clutch speed changers and its shift control method.
Background technology
In recent years, in order to improve driver comfort, mitigate the fatigue of driver, improve the fuel economy and power of vehicle
Property, it is more and more using the vehicle of automatic transmission.
The automatic transmission that existing vehicle uses mainly includes following several：Using planetary gears and fluid torque-converter
Hydraulic automatic speed variator (Automatic Transmission, AT), using the parallel-axes gears formula of multiple fixing tooth trains
Automatic speed changer for machine (Automated Mechanical Transmission, AMT) and double-clutch automatic gearbox
(Dual Clutch Transmission, DCT).Wherein, double-clutch automatic gearbox can avoid power in shift process
The problem of interruption and shift shock are big, have become the focus of automotive field research.
Existing double-clutch speed changer is generally six fast double-clutch speed changers, including 1~6 grade amounts to 6 gears and one
Individual reverse gear position.However, existing six fast double-clutch speed changer, because its tooth is smaller than scope, fuel economy is poor, it is difficult to meets
Therefore there are eight fast double-clutch speed changers in the demand of active user.Eight fast double-clutch speed changers can realize eight paces
Than with a reverse speed ratio, broader tooth can be obtained than scope, improve fuel economy.
But existing eight fast double-clutch speed changer comprises at least：Eight driving gears corresponding to eight forwards
With eight driven gears, reverse driving gear and driven gear corresponding to reverse gear position, and at least five are arranged on two gears
Between synchronizer, complicated, amount of parts is more, and the space of occupancy is larger.
The content of the invention
The embodiment of the present invention solve the problems, such as to be to provide it is a kind of it is simple in construction, parts are less, space-consuming less eight
Fast double-clutch speed changer.
To solve the above problems, the embodiment of the present invention provides a kind of eight fast double-clutch speed changers, including：
First input shaft, the first input clutch, one grade of driving gear, first synchronous is installed on first input shaft
Device, seven grades of driving gears and third speed drive gear, one grade of driving gear share with five grades of driving gears, and described first is same
Step device be arranged between one grade of driving gear and seven grades of driving gears, be adapted to one grade of driving gear and
Seven grades of driving gears；
Second input shaft, the second input clutch, fourth gear driving gear, second synchronous is installed on second input shaft
Device, two grades of driving gears, eight grades of driving gears and reverse driving gear, two grades of driving gears are total to six grades of driving gears
With second synchronizer is arranged between the fourth gear driving gear and two grades of driving gears, is adapted to described
Fourth gear driving gear and two grades of driving gears；
Output shaft, fourth gear driven gear, two grades of driven gears, eight grades of driven gears, reverse gears are installed on the output shaft
Driven gear, first speed driven gear, seven grades of driven gears, third gear driven gear, the 3rd synchronizer and the 4th synchronizer, it is described
First speed driven gear shares with five grades of driven gears, and two grades of driven gears share with six grades of driven gears；Described 3rd is same
Step device is arranged between eight grades of driven gears and the reverse gear driven gear, is adapted to eight grades of driven gears and institute
State reverse gear driven gear；4th synchronizer is arranged between seven grades of driven gears and the third gear driven gear, is fitted
In connection seven grades of driven gears and the third gear driven gear.
Optionally, first synchronizer is with reference to one grade of driving gear, the 3rd synchronizer idle running, and described the
When four synchronizers are combined with the third gear driven gear, output gear is one grade；First synchronizer is with reference to one grade of master
Moving gear, the 3rd synchronizer idle running, and when the 4th synchronizer is combined with seven grades of driven gears, exporting gear is
Five grades.
Optionally, first input clutch, one grade of driving gear, seven grades of driving gears and described three
Shelves driving gear empty set is on first input shaft；First synchronizer is fixed on first input shaft.
Optionally, second synchronizer is with reference to two grades of driving gears, the 3rd synchronizer idle running, and described the
When four synchronizers are combined with the third gear driven gear, output gear is two grades；Second synchronizer is with reference to two grades of masters
Moving gear, the 3rd synchronizer idle running, and when the 4th synchronizer is combined with seven grades of driven gears, exporting gear is
Six grades.
Optionally, second input clutch, the fourth gear driving gear, two grades of driving gear empty sets are described
On second input shaft, second synchronizer, eight grades of driving gears and the reverse driving gear are fixed on described second
On input shaft.
Optionally, two grades of driven gears, eight grades of driven gears, the reverse gear driven gear, it is described one grade from
Moving gear, seven grades of driven gears and the third gear driven gear empty set are on the output shaft；The fourth gear driven tooth
Wheel, the 4th synchronizer are each attached to the output shaft.
Optionally, one grade of driving gear engages with the first speed driven gear, two grades of driving gears with it is described
Two grades of driven gear engagements, the third speed drive gear engage with the third gear driven gear, the fourth gear driving gear and institute
State the engagement of fourth gear driven gear, seven grades of driving gears engage with seven grades of driven gears, eight grades of driving gears and
Eight grades of driven gears engagement, the reverse driving gear engage with the reverse gear driven gear.
To solve the above problems, the embodiment of the present invention additionally provides a kind of eight fast double-clutch speed changer shift control methods,
Including：Receive shifting commands；Obtain current gear value and target gear value；It is and described when the current gear value is seven grades
When target gear value is fourth gear, the second synchronizer and fourth gear driving gear pre-hung dally the 3rd synchronizer, by the first input
Clutch switches to off-state from bonding state, and the second input clutch is switched into bonding state from off-state, will
Seven grades switch to fourth gear；When the current gear value is fourth gear, and the target gear value is one grade, by the first synchronizer
With one grade of driving gear pre-hung, the first input clutch C1 is switched into bonding state from off-state, by the second input clutch
Device C2 switches to off-state from bonding state, and fourth gear is switched into one grade；It is and described when the current gear value is seven grades
When target gear value is one grade, gear switching operation is performed, fourth gear is switched to by seven grades, and after fourth gear is switched to by seven grades,
Gear switching operation is performed, fourth gear is switched to one grade.
Compared with prior art, the technical scheme of the embodiment of the present invention has advantages below：
By the way that one grade of driving gear and five grades of driving gears are shared, first speed driven gear and five grades of driven gears share,
Two grades of driving gears and six grades of driving gears share, two grades of driven gears and six grades of driven gears share.Compared to existing eight
Fast double-clutch speed changer, while eight gears and a reverse gear position is realized, it can at least reduce two driving gears and two
Individual driven gear, effectively simplify the structure of eight fast double-clutch speed changers, reduce the space shared by eight fast double-clutch speed changers.
Further, when selection shares the gear that gear mesh one of is answered, pass through and control the 4th synchronizer and third gear
Driven gear is combined or combined with seven grades of driven gears, and to realize the selection of gear, eight are can be achieved only with 4 synchronizers
Gear and reverse gear position, so as to further reduce the space shared by eight fast double-clutch speed changers.
A downshift operation is only needed to can be achieved in addition, gear is down into fourth gear from seven grades, clutch only needs to carry out
Once interact, five grades, the five grades gear changes three times for being down to fourth gear are down to without being down to six grades, six grades by seven grades, from
Clutch needs to be interacted three times, and synchronizer carries out pre-hung three times and operated.Likewise, gear is down into one grade from fourth gear also only needs
A downshift operation is wanted to can be achieved, clutch only needs once to be interacted, without being down to third gear, third gear by fourth gear
Two grades, the two grades gear changes three times for being down to one grade are down to, clutch needs to be interacted three times, and synchronizer carries out pre-hung three times
Operation.While downshift operation is accelerated, reduce the frequent operation to clutch and synchronizer, clutch and same can be increased
Walk the service life of device.
Brief description of the drawings
Fig. 1 is the fast dual clutch transmission structure schematic diagram of one kind eight in the embodiment of the present invention；
Fig. 2 is that the power of a kind of eight fast one grade of double-clutch speed changers in the embodiment of the present invention transmits schematic diagram；
Fig. 3 is that the power of a kind of eight fast two grades of double-clutch speed changers in the embodiment of the present invention transmits schematic diagram；
Fig. 4 is that the power of a kind of eight fast double-clutch speed changer third gear in the embodiment of the present invention transmits schematic diagram；
Fig. 5 is that the power of a kind of eight fast double-clutch speed changer fourth gear in the embodiment of the present invention transmits schematic diagram；
Fig. 6 is that the power of a kind of eight fast five grades of double-clutch speed changers in the embodiment of the present invention transmits schematic diagram；
Fig. 7 is that the power of a kind of eight fast six grades of double-clutch speed changers in the embodiment of the present invention transmits schematic diagram；
Fig. 8 is that the power of a kind of eight fast seven grades of double-clutch speed changers in the embodiment of the present invention transmits schematic diagram；
Fig. 9 is that the power of a kind of eight fast eight grades of double-clutch speed changers in the embodiment of the present invention transmits schematic diagram；
Figure 10 is that the power of a kind of eight fast double-clutch speed changer N shelves in the embodiment of the present invention transmits schematic diagram；
Figure 11 is that the power of a kind of eight fast double-clutch speed changer R shelves in the embodiment of the present invention transmits schematic diagram；
Figure 12 is the procedure chart of a kind of eight fast double-clutch speed changer jump downshifts in the embodiment of the present invention.
Embodiment
Existing double-clutch speed changer is generally six fast double-clutch speed changers, including 1~6 grade amounts to 6 gears and one
Individual reverse gear position.However, existing six fast double-clutch speed changer, because its tooth is smaller than scope, fuel economy is poor, it is difficult to meets
The demand of active user, therefore there are eight fast double-clutch speed changers.Eight fast double-clutch speed changers can realize eight speed of advancing
Degree ratio and a reverse speed ratio, broader tooth can be obtained than scope, improve fuel economy.
But existing eight fast double-clutch speed changer comprises at least：Eight driving gears corresponding to eight forwards
With eight driven gears, reverse driving gear and driven gear corresponding to reverse gear position, nine gears are amounted to, therefore at least need
5 synchronizers being arranged between two gears.It can be seen that existing eight fast dual clutch transmission structure is complicated, amount of parts
More, the space of occupancy is larger.
In the embodiment of the present invention, by the way that one grade of driving gear and five grades of driving gears are shared, first speed driven gear and five
Shelves driven gear shares, two grades of driving gears and six grades of driving gears are shared, two grades of driven gears and six grades of driven gears share.
Compared to existing eight fast double-clutch speed changers, while eight gears and a reverse gear position is realized, two can be at least reduced
Individual driving gear and two driven gears, effectively simplify the structure of eight fast double-clutch speed changers, reduce by eight fast double-clutch speed changers
Shared space.
It is understandable to enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage to become apparent, it is right below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
Reference picture 1, the embodiment of the present invention give a kind of eight fast double-clutch speed changers, including：Input shaft 101 and output shaft
102, wherein：
Input shaft 101 can include the first input shaft and the second input shaft, and the first input shaft and the second input shaft can be with
The form of empty set combines, and the second input shaft and the first input shaft are coaxial.
In embodiments of the present invention, the first input clutch C1, one grade of driving gear can be installed on the first input shaft
11st, the first synchronizer S1, seven grades of driving gears 71 and third speed drive gear 31.Wherein, one grade of driving gear 11 can be simultaneously
As five grades of driving gears, the first synchronizer S1 can be arranged between one grade of driving gear 11 and seven grades of driving gears 71, fitted
In one grade of driving gear 11 of connection and seven grades of driving gears 71.
In an embodiment of the present invention, when the first synchronizer S1 is combined with one grade of driving gear 11, the first synchronizer S1
One grade of driving gear 11 is driven to rotate.Because one grade of driving gear 11 and five grades of driving gears share, therefore it is possible to export gear
For one grade, it is also possible to be five grades.When the first synchronizer S1 is combined with seven grades of driving gears 71, the first synchronizer S1 drives seven grades
Driving gear 71 rotates, and output gear is seven grades.
In embodiments of the present invention, the second input clutch C2, fourth gear driving gear 41, are installed on second input shaft
Two synchronizer S2, two grades of driving gears, 21, eight grades of driving gears 81 and reverse driving gear R1.Wherein, two grades of driving gears
21 can be used as six grades of driving gears simultaneously, and the second synchronizer S2 can be arranged on fourth gear driving gear 41 and two grades of driving gears
Between 21, fourth gear driving gear 41 and two grades of driving gears 21 are adapted to.
In an embodiment of the present invention, when the second synchronizer S2 is combined with two grades of driving gears 21, the second synchronizer S2
Two grades of driving gears 21 are driven to rotate.Because two grades of driving gears 21 can share with six grades of driving gears, therefore export gear
It may be two grades, it is also possible to be six grades.When the second synchronizer S2 is combined with fourth gear driving gear 41, the second synchronizer S2 drives
Fourth gear driving gear 41 rotates, and output gear is fourth gear.
In embodiments of the present invention, first speed driven gear 12, seven grades of driven gears 72, third gear are installed on output shaft 102
It is driven gear 32,42, two grades of fourth gear driven gear, 22, eight grades of driven gear driven gear 82, reverse gear driven gear R2, the 3rd same
Walk device S3 and the 4th synchronizer S4.Wherein, first speed driven gear 12 can be used as five grades of driven gears, two grades of driven tooths simultaneously
Wheel 22 can be used as six grades of driven gears simultaneously.3rd synchronizer S3 can be arranged on eight grades of driven gears 82 and reverse gear driven tooth
Between taking turns R2, be adapted to eight grades of driven gears 82 and reverse gear driven gear R2, the 4th synchronizer S4 can be arranged on seven grades from
Between moving gear 72 and third gear driven gear 32, seven grades of driven gears 72 and third gear driven gear 32 are adapted to.
In an embodiment of the present invention, the putting in order for each parts on output shaft 102 is followed successively by：Fourth gear driven gear
42nd, two grades of driven gears, 22, eight grades of driven gears 82, the 3rd synchronizer S3, reverse gear driven gear R2, first speed driven gear 12,
Seven grades of driven gears 72, the synchronizer S4 of third gear driven gear 32 and the 4th.In actual applications, the ranking order of gear may be used also
Other sortords be present, do not do and repeat one by one herein.
In an embodiment of the present invention, the first input clutch C1, one grade of driving gear, 11, seven grades of driving gears 71 and
For 31 equal empty set of third speed drive gear on the first input shaft, the first synchronizer S1 is fixed on the first input shaft, and seven grades of driving tooths
Wheel 71 can synchronous axial system with third speed drive gear 31.41, two grades of second input clutch C2, fourth gear driving gear driving gears 21
For equal empty set on the second input shaft, the second synchronizer S2, eight grades of driving gears 81 and reverse driving gear R1 are both secured to second
Input shaft.
In fact, input shaft 102 is also using set axle form, as shown in figure 1, the input shaft 102 is interior axle, it is outside also
Outer shaft is arranged with, two grades of driven gears 22, the 3rd synchronizer S3, first speed driven gear 12 and seven grades of driven gears 72 are both secured to
Outer shaft；Eight grades of driven gears 82 and the equal empty sets of reverse gear driven gear R2 realize eight on the outer shaft, and by the 3rd synchronizer S3
Shelves driven gear 82, reverse gear driven gear R2 and outer between centers power transmit；The synchronizer S4 of fourth gear driven gear 42 and the 4th is equal
It is fixed in interior axle, that is, is directly anchored on output shaft 102, third gear driven gear 32 is then placed in output shaft 102, and the 4th is synchronous
Device S4 is kept off between driven gear 32 located at seven grades of driven gears 71 and three.
In an embodiment of the present invention, one grade of driving gear 11 engages with first speed driven gear 12, as the first synchronizer S1
With reference to one grade of driving gear 11, when driving one grade of driving gear 11 to rotate, one grade of driven tooth being engaged with one grade of driving gear 11
Wheel 12 does corresponding rotation, so as to output torque, realizes the output of one grade of power.Correspondingly, two grades of driving gears 21 and two grades from
Moving gear 22 engages, third speed drive gear 31 engages with third gear driven gear 32, fourth gear driving gear 41 and fourth gear driven gear
42 engage, seven grades of driving gears 71 engage with seven grades of driven gears 72, eight grades of driving gears 81 engage with eight grades of driven gears 82,
Reverse driving gear R1 engages with reverse gear driven gear R2, by being combined with each self-corresponding synchronizer, so as to realize
Corresponding gear output.
In specific implementation, because one grade of driving gear 11 and five grades of driving gears share, correspondingly first speed driven gear
12 and five grades of driven gears share, when the first synchronizer S1 combines one grade of driving gear 11, the gear of output can be one grade,
It can also be five grades.
In an embodiment of the present invention, when output gear is one grade, the first synchronizer S1 combines one grade of driving gear 11, the
Three synchronizers are not combined with any driven gear, and in idling conditions, the 4th synchronizer S4 is combined with third gear driven gear 32.It is defeated
Go out gear for five grades when, the first synchronizer S1 combines one grade of driving gear 11；3rd synchronizer is not combined with any driven gear,
In idling conditions；4th synchronizer S4 is combined with seven grades of driven gears 72.
Further, since two grades of driving gears 21 and six grades of driving gears share, correspondingly two grades of driven gears 22 and six grades
Driven gear shares.When the second synchronizer S2 combines two grades of driving gears 21, the gear of output can be two grades, or
Six grades.
In an embodiment of the present invention, when output gear is two grades, the second synchronizer S2 combines two grades of driving gears 21, the
Three synchronizer S3 are not combined with any driven gear, and in idling conditions, the 4th synchronizer S4 is combined with third gear driven gear 32.
When to export gear be six grades, the second synchronizer S2 combines two grades of driving gears 21, the 3rd synchronizer S3 not with any driven gear
With reference to, in idling conditions, the 4th synchronizer S4 and seven grades of driven gears 72.
Thus it is clear that by the way that one grade of driving gear and five grades of driving gears are shared, first speed driven gear and five grades of driven gears
Share, two grades of driving gears and six grades of driving gears are shared, two grades of driven gears 22 and six grades of driven gears share.Compared to existing
Eight fast double-clutch speed changers having, while eight gears and a reverse gear position is realized, it can at least reduce by two driving tooths
Wheel and two driven gears, effectively simplify the structure of eight fast double-clutch speed changers, reduce shared by eight fast double-clutch speed changers
Space.
In addition, when selection shares the gear that gear mesh one of is answered, pass through control the 4th synchronizer and third gear
Driven gear combines or seven grades of driven gears combine, and to realize the selection of gear, eight shelves can be achieved only with 4 synchronizers
Position and reverse gear position, so as to further reduce the space shared by eight fast double-clutch speed changers.
In Fig. 1, G1~G8 is expressed as one grade~eight grades.In embodiments of the present invention, eight fast double-clutch speed changer
It can also include：The differential mechanism coupled with output shaft 102, and the main deceleration driving gear with differential mechanism coupling.
Provided in an embodiment of the present invention eight fast double-clutch speed changers are given below, when execution sequence upshifts, each gear pair
The first input clutch C1, the second input clutch C2, the first synchronizer S1, the second synchronizer S2, the 3rd synchronizer S3 answered
And the 4th synchronizer S4 state, with reference to table 1.
Table 1
In table 1, zero represents that clutch disconnects, ● clutch engagement is represented, synchronizer corresponding to dash area expression is in
Pre-hung state, ← synchronizer corresponding to expression are combined with its left side driving gear, → synchronizer corresponding to representative and its right side master
Moving gear combines, and ↑ synchronizer corresponding to expression is in an intermediate position, is not combined with any driving gear.
For example, current gear is third gear, when execution sequence upshifts, next gear is fourth gear.Corresponding to current gear third gear
First input clutch C1 is in bonding state, and the second input clutch C2 is off.First synchronizer S1 and right side
Seven grades of driving gears 71 combine, the 3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear, the 4th synchronizer
S4 is combined with the third gear driven gear 32 on right side.Because next gear is fourth gear, to avoid occurring in power in shift process
Disconnected situation occurs, therefore by the pre-hung of fourth gear driving gear 41 in the second synchronizer S2 and left side, when gear switches to from third gear
During fourth gear, it is possible to achieve power failure-free is shifted gears.
In embodiments of the present invention, pre-hung is expressed as synchronizer and is in bonding state with driving gear, but synchronizer exists
Current time does not drive driving gear to rotate.For example, the second synchronizer S2 and the pre-hung of fourth gear driving gear 41, are expressed as second
Synchronizer S2 is combined with fourth gear driving gear 41, but the second synchronizer S2 can not drive fourth gear driving gear at current time
41 rotate.
It is given below in provided in an embodiment of the present invention eight fast double-clutch speed changers, when execution sequence downshifts, each gear
Corresponding first input clutch C1, the second input clutch C2, the first synchronizer S1, the second synchronizer S2, the 3rd synchronizer
S3 and the 4th synchronizer S4 state, with reference to table 2.
Table 2
The implication that each mark in table 2 represents is referred to table 1, does not do repeating one by one herein.
For example, current gear is fourth gear, when execution sequence downshifts, next gear is third gear.Corresponding to current gear fourth gear
First input clutch C1 is off, and the second input clutch C2 is in bonding state.Second synchronizer S2 and left side
Fourth gear driving gear 41 combine, the 3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear, the 4th synchronizer
S4 and the pre-hung of the third speed drive gear on right side 31.First synchronizer S1 is combined with seven grades of driving gears 71 on right side, in pre-hung
State, when gear switches to third gear from fourth gear, it is possible to achieve power failure-free is shifted gears.
From Tables 1 and 2 it is known that when current gear is odd gear, the first input clutch C1, which is in, to be combined
State, the second input clutch C2 are off；When current gear is even gear or reversed gear, the first input clutch
Device C1 is off, and the second input clutch C2 is in bonding state.I.e. in any gear, only an input clutch
In bonding state, another input clutch is off.
2~Figure 11 of reference picture, below in conjunction with the accompanying drawings, to eight fast each gears of double-clutch speed changer in one embodiment of the invention
Power transmission line illustrate successively.In Fig. 1~Figure 11, G1~G8 is expressed as one grade~eight grades, and R is expressed as down
Shelves.Heavy line in Fig. 2~Figure 11 is expressed as gear power and transmits schematic diagram.
Reference picture 2, it is the power transmission schematic diagram of eight fast one grade of double-clutch speed changers in one embodiment of the invention.First
Input clutch C1 is in bonding state, and the second input clutch C2 is off.First synchronizer S1 and one grade of active
Gear 11 combines；3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear；4th synchronizer S4 and right side
Third gear driven gear 32 combines.In order to avoid occurring the situation of power interruption in shift process, by the second synchronizer S2 and two grades
The pre-hung of driving gear 21.
First input clutch C1 is in bonding state, the first input shaft output power.It is fixed on the first input shaft
First synchronizer S1 is combined with one grade of driving gear 11, drives one grade of driving gear 11 to rotate, so as to drive and one grade of driving tooth
The first speed driven gear 12 of the engagement of wheel 11 rotates, and first speed driven gear 12 drives outer shaft to rotate, and then by seven grades of driven gear 72-
Seven grades of passing powers of driving gear 71- third speed drive gears 31, and the rotation of three gear driven gears 32 is finally driven, it is fixed on defeated
The 4th synchronizer S4 on shaft 102 is combined with third gear driven gear 32, to drive output shaft 102 to rotate, so as to realize one grade
The output of power.
Reference picture 3, it is the power transmission schematic diagram of eight fast two grades of double-clutch speed changers in one embodiment of the invention.First
Input clutch C1 is off, and the second input clutch C2 is in bonding state.Second synchronizer S2 and two grades of actives
Gear 21 combines, and the 3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear, the 4th synchronizer S4 and third gear from
Moving gear 32 combines.
When speed changer is in two grades, gearshift request is probably to be down to one grade of request, it is also possible to which rise to third gear please
Ask.When gearshift request is asked for upshift, by the first synchronizer S1 and seven grades of pre-hungs of driving gear 71, reference picture 3 (a)；When changing
When gear request is downshift request, by the first synchronizer S1 and one grade of pre-hung of driving gear 11, reference picture 3 (b).
When the second input clutch C2 is in bonding state, the second input shaft output power, the second input shaft is fixed on
On the second synchronizer S2 combined with two grades of driving gears 21, drive two grades of driving gears 21 rotate, so as to drive and two grades of masters
Two grades of driven gears 22 that moving gear 21 engages rotate, and two grades of driven gears 22 drive outer shaft to rotate, and then by seven grades of driven tooths
Seven grades of passing powers of driving gear 71- third speed drive gears 31 of 72- are taken turns, and finally drive the rotation of three gear driven gears 32, Gu
The 4th synchronizer S4 being scheduled on output shaft 102 is combined with third gear driven gear 32, to drive output shaft 102 to rotate, so as to real
The output of existing two grades of power.
Reference picture 4, it is the power transmission schematic diagram of eight fast double-clutch speed changer third gear in one embodiment of the invention.First
Input clutch C1 is in bonding state, and the second input clutch C2 is off.First synchronizer S1 and seven grades of actives
Gear 71 combines；3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear；4th synchronizer S4 and third gear from
Moving gear 32 combines.
First input clutch C1 is in bonding state, the first input shaft output power, is fixed on the first input shaft
First synchronizer S1 is combined with seven grades of driving gears 71, drives seven grades of driving gears 71 to rotate, third speed drive gear 31 can be with seven
The shelves synchronous axial system of driving gear 71, and then drive the third gear driven gear 32 engaged with third speed drive gear 31 to rotate, it is fixed on
The 4th synchronizer S4 on output shaft 102 is combined with third gear driven gear 32, to drive output shaft 102 to rotate, so as to realize three
The output of shelves power.
When speed changer is in third gear, gearshift request is probably to be down to two grades of request, it is also possible to which rise to fourth gear please
Ask.When gearshift request is asked for upshift, by the second synchronizer S2 and the pre-hung of fourth gear driving gear 41, reference picture 4 (a)；When changing
When gear request is downshift request, by the second synchronizer S2 and two grades of pre-hungs of driving gear 21, reference picture 4 (b).
Reference picture 5, it is the power transmission schematic diagram of eight fast double-clutch speed changer fourth gear in one embodiment of the invention.First
Input clutch C1 is off, and the second input clutch C2 is in bonding state.Second synchronizer S2 and fourth gear active
Gear 41 combines, and the 3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear.
When the second input clutch C2 is in bonding state, the second input shaft output power, the second input shaft is fixed on
On the second synchronizer S2 combined with fourth gear driving gear 41, drive fourth gear driving gear 41 to rotate, so as to drive and fourth gear master
The fourth gear driven gear 42 that moving gear 41 engages rotates, and fourth gear driven gear 42 drives output shaft 102 to rotate, so as to realize fourth gear
The output of power.
When speed changer is in fourth gear, gearshift request is probably the request of being down to third gear, it is also possible to rise to five grades please
Ask.When gearshift request is asked for upshift, by the first synchronizer S1 and one grade of pre-hung of driving gear 11；By the 4th synchronizer S4 with
Seven grades of pre-hungs of driven gear 72, reference picture 5 (a)；When gearshift request is downshift request, by the first synchronizer S1 and seven grades of actives
The pre-hung of gear 71, by the 4th synchronizer S4 and the pre-hung of third gear driven gear 32, reference picture 5 (b).
Reference picture 6, it is the power transmission schematic diagram of eight fast five grades of double-clutch speed changers in one embodiment of the invention.First
Input clutch C1 is in bonding state, and the second input clutch C2 is off.First synchronizer S1 and one grade of active
Gear 11 combines；3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear；4th synchronizer S4 and seven grades from
Moving gear 72 combines.
First input clutch C1 is in bonding state, the first input shaft output power.Due to five grades of driving gears and one
Shelves driving gear 11 is shared, and the first synchronizer S1 being fixed on the first input shaft is combined with one grade of driving gear 11, drives one
Shelves driving gear 11 rotates, so as to drive the first speed driven gear 12 engaged with one grade of driving gear 11 to rotate, one grade of driven tooth
Wheel 12 drives outer shaft to rotate, and then drives seven grades of synchronous axial systems of driven gear 72, the 4th synchronizer being fixed on output shaft 102
S4 is combined with seven grades of driven gears 72, to drive output shaft 102 to rotate, so as to realize the output of five grades of power.
When speed changer is in five grades, gearshift request is probably the request of being down to fourth gear, it is also possible to rise to six grades please
Ask.When gearshift request is asked for upshift, the second synchronizer S2 is combined with two grades of driving gears 21, in pre-hung state, ginseng
According to Fig. 6 (a)；When gearshift request is downshift request, the second synchronizer S2 is combined with fourth gear driving gear 41, in pre-hung shape
State, reference picture 6 (b).
Reference picture 7, it is the power transmission schematic diagram of eight fast six grades of double-clutch speed changers in one embodiment of the invention.First
Input clutch C1 is off, and the second input clutch C2 is in bonding state.Second synchronizer S2 and two grades of actives
Gear 21 combines, and the 3rd synchronizer S3 is in an intermediate position, is not combined with any driven gear, the 4th synchronizer S4 and seven grades from
Moving gear 72 combines.
When the second input clutch C2 is in bonding state, the second input shaft output power.Due to six grades of driving gears
Shared with two grades of driving gears 21, the second synchronizer S2 being fixed on the second input shaft is combined with two grades of driving gears 21, band
Move two grades of driving gears 21 rotate, so as to drive the two grades of driven gears 22 engaged with two grades of driving gears 21 to rotate, two grades from
Moving gear 22 drives outer shaft to rotate, and then seven grades of synchronous axial systems of driven gear 72 of drive, the 4th be fixed on output shaft 102 are same
Step device S4 is combined with seven grades of driven gears 72, to drive output shaft 102 to rotate, so as to realize the output of six grades of power.
When speed changer is in six grades, gearshift request is probably to be down to five grades of request, it is also possible to rise to seven grades please
Ask.When gearshift request is asked for upshift, by the first synchronizer S1 and seven grades of pre-hungs of driving gear 71, reference picture 7 (a)；When changing
When gear request is downshift request, by the first synchronizer S1 and one grade of pre-hung of driving gear 11, reference picture 7 (b).
Reference picture 8, it is the power transmission schematic diagram of eight fast seven grades of double-clutch speed changers in one embodiment of the invention.First
Input clutch C1 is in bonding state, and the second input clutch C2 is off.First synchronizer S1 and seven grades of actives
Gear 71 combines；Second synchronizer S2 is in an intermediate position, is not combined with any driving gear；4th synchronizer S4 and seven grades from
Moving gear 72 combines.
First input clutch C1 is in bonding state, the first input shaft output power.It is fixed on the first input shaft
First synchronizer S1 is combined with seven grades of driving gears 71, drives seven grades of driving gears 71 to rotate, so as to drive and seven grades of driving tooths
Seven grades of driven gears 72 of the engagement of wheel 71 rotate, and seven grades of driven gears 72 drive outer shafts to rotate, the be fixed on output shaft 102
Four synchronizer S4 are combined with seven grades of driven gears 72, to drive output shaft 102 to rotate, so as to realize the output of seven grades of power.
When speed changer is in seven grades, gearshift request is probably to be down to six grades of request, it is also possible to rise to eight grades please
Ask.When gearshift request is asked for upshift, the second synchronizer S2 is in an intermediate position, by the 3rd synchronizer S3 and eight grades of driven tooths
Take turns 81 pre-hungs, reference picture 8 (a)；It is when gearshift request is downshift request, the second synchronizer S2 and two grades of driving gears 21 is pre-
Hang, the 3rd synchronizer S3 is in an intermediate position, reference picture 8 (b).
Reference picture 9, it is the power transmission schematic diagram of eight fast eight grades of double-clutch speed changers in one embodiment of the invention.First
Input clutch C1 is off, and the second input clutch C2 is in bonding state.3rd synchronizer S3 and eight grades it is driven
Gear 81 is combined, and the 4th synchronizer S4 is combined with seven grades of driven gears 72, so as to realize eight grades of power output.At speed changer
When eight grades, shift-down action can only be performed, by the first synchronizer S1 and the pre-hung of first speed driven gear 12, the second synchronizer S2 is in
Centre position, do not combined with any driving gear.
When the second input clutch C2 is in bonding state, the second input shaft output power, eight grades of driving gears are driven
81 rotate, and then drive the eight grades of driven gears 82 engaged with eight grades of driving gears 81 to rotate, and the 3rd be fixed on outer shaft is same
Step device S3 is combined with eight grades of driven gears 81, to drive outer shaft to rotate, and then drives seven grades of synchronous axial systems of driven gear 72, fixed
The 4th synchronizer S4 on output shaft 102 is combined with seven grades of driven gears 72, to drive output shaft 102 to rotate, so as to realize
The output of eight grades of power.
Reference picture 10, it is the power transmission schematic diagram of eight fast double-clutch speed changer N shelves in one embodiment of the invention.First
Input clutch C1 and the second input clutch C2 are in off-state, i.e. now unpowered output.First synchronizer S1 with
One grade of pre-hung of driving gear 11, the second synchronizer S2 and two grades of pre-hungs of driving gear 21, the 3rd synchronizer S3 is in an intermediate position,
4th synchronizer S4 and the pre-hung of third gear driven gear 32.
Reference picture 11, it is the power transmission schematic diagram of eight fast double-clutch speed changer R shelves in one embodiment of the invention.First
Input clutch C1 is off, and the second input clutch C2 is in bonding state.First synchronizer S1 and seven grades of actives
The pre-hung of gear 71；Second synchronizer S2 is in an intermediate position；3rd synchronizer S3 is combined with R shelves driven gears；4th synchronizer
S4 is combined with seven grades of driven gears 72, so as to realize the output of R shelves.
When the second input clutch C2 is in bonding state, the second input shaft output power, reverse driving gear is driven
R1 is rotated, and then drives the reverse gear driven gear R2 engaged with reverse driving gear R1 to rotate, and be fixed on outer shaft the 3rd is synchronous
Device S3 is combined with reverse gear driven gear R2, to drive outer shaft to rotate, and then is driven seven grades of synchronous axial systems of driven gear 72, is fixed on
The 4th synchronizer S4 on output shaft 102 is combined with seven grades of driven gears 72, to drive output shaft 102 to rotate, so as to realize down
The output of shelves.
For provided in an embodiment of the present invention eight fast double-clutch speed changers, one embodiment of the invention gives sequential upshift
Shift logic and sequential downshift shift logic, the first input clutch C1, the second input clutch corresponding to each gear
C2, the first synchronizer S1, the second synchronizer S2, the S4 state of the synchronizers of the 3rd synchronizer S3 the 4th are referred to table 1 and table
2。
Using provided in an embodiment of the present invention eight fast double-clutch speed changers, the gearshift that can also have great-jump-forward downshift is patrolled
Volume, the shift logic of great-jump-forward downshift is described in detail below.In an embodiment of the present invention, it is seven grades in current gear
During the above, gear can be directly down to fourth gear from seven grades；, can be straight from fourth gear by gear when current gear is more than fourth gear
Connect and be down to one grade.
The principle of the shift logic of great-jump-forward downshift is as follows：As can be known from Table 2, when gear is seven grades, the first input clutch
Device C1 is in bonding state, and the second input clutch C2 is off.First synchronizer S1 and seven grades of knots of driving gear 71
Close, the second synchronizer S2 and six grades of driving gear pre-hungs, the 3rd synchronizer S3 idle running in an intermediate position, the 4th synchronizer S4 and
Seven grades of driven gears 72 combine.When i.e. gear is seven grades, only the first synchronizer S1 and the 4th synchronizer of power output are participated in
S4, and it is unrelated with the second synchronizer S2 and the 3rd synchronizer S3.Second synchronizer S2 and the 3rd synchronizer S3 is unrelated to be in pre-hung
State, it is down to six grades for seven grades and prepares, and is not involved in power output.
When gear is fourth gear, the first input clutch C1 is off, and the second input clutch C2 is in and combines shape
State, the first synchronizer S1 and seven grades of pre-hungs of driving gear 71, the second synchronizer S2 are combined with fourth gear driving gear 41, and the 3rd is synchronous
Device S3 idle running in an intermediate position, the 4th synchronizer S4 and the pre-hung of third speed drive gear 31.When i.e. gear is fourth gear, power is participated in
Only the second synchronizer S2 and the 3rd synchronizer S3 of output, and it is unrelated with the first synchronizer S1 and the 4th synchronizer S4.First
Synchronizer S1 and the 4th synchronizer S4 is unrelated to be in pre-hung state, is down to third gear for fourth gear and prepares, and is not involved in power output.
As can be seen here, by the second synchronizer S2 and the 3rd synchronizer S3 state, four can be set in advance as at seven grades
State corresponding to second synchronizer S2 and the 3rd synchronizer S3 during shelves, i.e., it is the second synchronizer S2 and fourth gear driving gear 41 is pre-
Hang, the 3rd synchronizer S3 is dallied, with reference to table 3.
Table 3
Then when switching to fourth gear for seven grades, it is only necessary to which the first input clutch C1 is switched into disconnection shape from bonding state
State, the second input clutch C2 is switched into bonding state from off-state, due to the second synchronizer S2 and the 3rd synchronizer S3
Corresponding state during fourth gear has been preset as, then directly can switch to fourth gear by seven grades.
As can be known from Table 2, when gear is fourth gear, the first input clutch C1 is off, the second input clutch
C2 is in bonding state.Second synchronizer S2 is combined with fourth gear driving gear 41, the 3rd synchronizer S3 idle running in an intermediate position.
First synchronizer S1 and the second synchronizer S2 is in pre-hung pattern, i.e., when gear is fourth gear, participates in only the of power output
Two synchronizer S2 and the 4th synchronizer S4, and it is unrelated with the first synchronizer S1 and the 3rd synchronizer S3.
When gear is one grade, the first input clutch C1 is in bonding state, and the second input clutch C2, which is in, disconnects shape
State.First synchronizer S1 is combined with one grade of driving gear 11, the 3rd synchronizer S3 idle running in an intermediate position, the 4th synchronizer S4
Combined with third gear driven gear 32, that is, participate in only the first synchronizer S1 and the 4th synchronizer S4 of power output, and with second
Synchronizer S2 is unrelated.
As can be seen here, can be in fourth gear, the first synchronizer when the first synchronizer S1 state is set in advance as into one grade
State corresponding to S1, with reference to table 4.
Table 4
When fourth gear then being switched into one grade, it is only necessary to switch to the first input clutch C1 with reference to shape from off-state
State, the second input clutch C2 is switched into off-state from bonding state, because the first synchronizer S1 has been preset as one grade
When corresponding state, and the 4th synchronizer S4 state also be one grade when corresponding state, then directly fourth gear can be switched to
One grade.
Reference picture 12, give the procedure chart of eight fast double-clutch speed changer downshifts in the embodiment of the present invention.In Figure 12,1
~8 are expressed as gear value.
In Figure 12, for example, current gear be eight grades, it is necessary to which gear is down into one grade.According to sequential downshift method, then
Gear change process is eight grades → seven grades → six grades → five grades → fourth gear → third gear → bis- grade → mono- grade.And great-jump-forward is used to drop
Shelves, then the change procedure of gear can be eight grades → seven grades → fourth gear → mono- grade, thus it is visible, pass through gear change three times
Realize from eight grades and be down to one grade.It can also be eight grades → seven grades → six grades → five grades from the eight grades of gear change for being down to one grade processes
→ fourth gear → mono- grade.
Gear is become from seven grades and turns to one grade, in sequential downshift method, gear change process can be seven grades → six grades
→ five grades → fourth gear → third gear → bis- grade → mono- grade.In great-jump-forward downshift method, the change procedure of gear can be seven grades → tetra-
Shelves → mono- grade, or seven grades → six grades → five grades → fourth gear → mono- grade, can also be seven grades → fourth gear → third gear → bis- grade
→ mono- grade.
Other gears are down to the downshift procedure chart that one grade of gear change process is referred in Figure 12 from current gear,
Do not do and repeat one by one herein.
As can be seen here, gear is down to fourth gear from seven grades only needs a downshift operation to can be achieved, and clutch only needs
Once interacted, five grades, the five grades gears three times for being down to fourth gear changes are down to without being down to six grades, six grades by seven grades
Change, clutch needs to be interacted three times, and synchronizer carries out pre-hung three times and operated.Likewise, gear is down to one grade from fourth gear
Also a downshift operation is only needed to can be achieved, clutch only needs once to be interacted, without being down to three by fourth gear
Shelves, third gear are down to two grades, the two grades gear changes three times for being down to one grade, and clutch is needed to be interacted three times, and synchronizer is carried out
Pre-hung operates three times.While downshift operation is accelerated, reduce the frequent operation to clutch and synchronizer, can increase from
The service life of clutch and synchronizer.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, this is not being departed from
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (8)
- A kind of 1. eight fast double-clutch speed changers, it is characterised in that including：First input shaft, be provided with first input shaft the first input clutch, one grade of driving gear, the first synchronizer, Seven grades of driving gears and third speed drive gear, one grade of driving gear share with five grades of driving gears, and described first is synchronous Device is arranged between one grade of driving gear and seven grades of driving gears, is adapted to one grade of driving gear and institute State seven grades of driving gears；Second input shaft, be provided with second input shaft the second input clutch, fourth gear driving gear, the second synchronizer, Two grades of driving gears, eight grades of driving gears and reverse driving gear, two grades of driving gears share with six grades of driving gears, institute State the second synchronizer to be arranged between the fourth gear driving gear and two grades of driving gears, be adapted to the fourth gear master Moving gear and two grades of driving gears；Output shaft, fourth gear driven gear, two grades of driven gears, eight grades of driven gears, reverse gears are installed driven on the output shaft Gear, first speed driven gear, seven grades of driven gears, third gear driven gear, the 3rd synchronizer and the 4th synchronizer, described one grade Driven gear shares with five grades of driven gears, and two grades of driven gears share with six grades of driven gears；3rd synchronizer Be arranged between eight grades of driven gears and the reverse gear driven gear, be adapted to eight grades of driven gears and it is described fall Shelves driven gear；4th synchronizer is arranged between seven grades of driven gears and the third gear driven gear, suitable for even Connect seven grades of driven gears and the third gear driven gear.
- 2. eight fast double-clutch speed changer as claimed in claim 1, it is characterised in that first synchronizer is with reference to described one grade Driving gear, the 3rd synchronizer idle running, and when the 4th synchronizer is combined with the third gear driven gear, output gear For one grade；First synchronizer is with reference to one grade of driving gear, the 3rd synchronizer idle running, and the 4th synchronizer When being combined with seven grades of driven gears, output gear is five grades.
- 3. eight fast double-clutch speed changer as claimed in claim 2, it is characterised in that first input clutch, described one Shelves driving gear, seven grades of driving gears and the third speed drive gear empty set are on first input shaft；Described One synchronizer is fixed on first input shaft.
- 4. eight fast double-clutch speed changer as claimed in claim 1, it is characterised in that second synchronizer is with reference to described two grades Driving gear, the 3rd synchronizer idle running, and when the 4th synchronizer is combined with the third gear driven gear, output gear For two grades；Second synchronizer is with reference to two grades of driving gears, the 3rd synchronizer idle running, and the 4th synchronizer When being combined with seven grades of driven gears, output gear is six grades.
- 5. eight fast double-clutch speed changer as claimed in claim 4, it is characterised in that second input clutch, described four Shelves driving gear, two grades of driving gear empty sets are on second input shaft；Second synchronizer, eight grades of actives Gear and the reverse driving gear are each attached on second input shaft.
- 6. the eight fast double-clutch speed changers as described in claim 3 or 5, it is characterised in that two grades of driven gears, described eight Shelves driven gear, the reverse gear driven gear, the first speed driven gear, seven grades of driven gears and the third gear are driven Gear empty set is on the output shaft；The fourth gear driven gear, the 4th synchronizer are each attached to the output shaft.
- 7. eight fast double-clutch speed changer as claimed in claim 6, it is characterised in that one grade of driving gear and described one grade Driven gear engages, and two grades of driving gears engage with two grades of driven gears, the third speed drive gear and described three Shelves driven gear engagement, the fourth gear driving gear engages with the fourth gear driven gear, seven grades of driving gears with it is described Seven grades of driven gear engagements, eight grades of driving gears engage with eight grades of driven gears, the reverse driving gear and institute State the engagement of reverse gear driven gear.
- 8. a kind of eight fast double-clutch speed changer shift control methods, the eight fast double-clutch speed changer is that claim 1-7 is any Eight fast double-clutch speed changers described in, it is characterised in that including：Receive shifting commands；Obtain current gear value and target gear value；When the current gear value is seven grades, and the target gear value is fourth gear, by the second synchronizer and fourth gear driving tooth Take turns pre-hung, by the 3rd synchronizer dally, the first input clutch is switched into off-state from bonding state, by second input from Clutch switches to bonding state from off-state, and fourth gear is switched to by seven grades；When the current gear value is fourth gear, and the target gear value is one grade, by the first synchronizer and one grade of driving tooth Pre-hung is taken turns, the first input clutch C1 is switched into bonding state from off-state, by the second input clutch C2 from reference to shape State switches to off-state, and fourth gear is switched into one grade；When the current gear value is seven grades, and the target gear value is one grade, gear switching operation is performed, seven grades are cut Fourth gear is shifted to, and after fourth gear is switched to by seven grades, performs gear switching operation, fourth gear is switched to one grade.
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| CN110230667B (en) * | 2018-03-06 | 2021-10-08 | 上海汽车集团股份有限公司 | Nine-speed double-clutch automatic transmission and vehicle |
| CN110435409B (en) * | 2018-05-03 | 2023-11-24 | 舍弗勒技术股份两合公司 | Hybrid transmission and hybrid vehicle |
| CN110723671A (en) * | 2019-09-20 | 2020-01-24 | 宝鸡石油机械有限责任公司 | Four-gear transmission case for petroleum drilling winch |
| CN116398591A (en) * | 2023-06-07 | 2023-07-07 | 盛瑞传动股份有限公司 | Dual clutch transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3926570C2 (en) * | 1989-08-11 | 1994-11-24 | Daimler Benz Ag | Gear change transmission with two countershaft transmissions for motor vehicles |
| JP5890098B2 (en) * | 2011-01-07 | 2016-03-22 | いすゞ自動車株式会社 | Dual clutch transmission |
| CN102352913B (en) * | 2011-09-30 | 2015-03-11 | 长城汽车股份有限公司 | Multi-gear vertical dual clutch transmission |
| DE102012202652A1 (en) * | 2012-02-21 | 2013-08-22 | Zf Friedrichshafen Ag | Transmission for a motor vehicle |
| DE102012217014A1 (en) * | 2012-09-21 | 2014-03-27 | Zf Friedrichshafen Ag | Transmission i.e. dual clutch transmission, for use as hybrid transmission in hybrid vehicle, has jackshaft and gear wheels forming eight gear wheel stages, and input shafts connected with two of stages for switching gears, respectively |
| DE102012219452A1 (en) * | 2012-10-24 | 2014-04-24 | Zf Friedrichshafen Ag | Gearbox for use as dual clutch transmission, has sleeve shaft attached to three spur gear translation stages for realizing winding gears and connectable with input shafts and jackshaft, where input shafts are drivable over dual clutches |
| CN103671760B (en) * | 2013-12-31 | 2017-02-22 | 重庆长安汽车股份有限公司 | Double-clutch automatic transmission device |
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