CN105485271B - A kind of automatic transmission and its epicyclic train - Google Patents
A kind of automatic transmission and its epicyclic train Download PDFInfo
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- CN105485271B CN105485271B CN201410482453.2A CN201410482453A CN105485271B CN 105485271 B CN105485271 B CN 105485271B CN 201410482453 A CN201410482453 A CN 201410482453A CN 105485271 B CN105485271 B CN 105485271B
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Abstract
The invention discloses a kind of epicyclic train, for automatic transmission, at least eight available forward ranges and at least two available positions of reversing gear can be obtained, including the first planet row, the second planet row, third planet row and fourth planet row, each planet row are respectively provided with sun gear, planet carrier and gear ring；The component of the planet row can form eight rotary bodies altogether with connecting elements；Gearshift component includes three clutches and three brakes, and the clutch is located between the selected rotary body in the rotary body, and the brake is located between selected rotary body and fixture in the rotary body.The epicyclic train can have more gears and the fast ratio more optimized, it is remarkably improved the power transfer performance and fuel economy of vehicle, and length is shorter, global design is compacter, can be very good to meet requirement of the vehicle to speed changer durability, power transmission efficiency, size, cost etc..The invention also discloses the automatic transmission provided with the epicyclic train.
Description
Technical field
The present invention relates to automobile technical field, the epicyclic train of vehicle automatic speed variator is particularly suitable for.The present invention
Further relate to the automatic transmission provided with the epicyclic train.
Background technology
Epicyclic train is the core institution that automatic transmission AT (Automatic Transmission) carries out speed change, its
Mainly be made up of planet row, clutch and brake, by controlling clutch and brake, can make the component of planet row with
Different combining form interconnection, so as to realize the conversion of a variety of gearratios.
When speed changer has more optional gears, it is possible to the design more optimized to it, by more gears,
More optimize the speed changer of fast ratio, engine can be made to meet the needs of different speeds in the case where high efficient district works, so that
Vehicle can have more economical fuel consumption and more preferable power performance.
At present, in the market is most commonly seen for four-speed and six gear transmissions, although it can be realized to a certain extent
Expected purpose.But from the perspective of technology development, deposited in fuel economy, response power and stationarity etc.
In limitation, up for being continuously improved and being updated design.
As described above, speed changer is more, more optimizes the realization of gear function depends on epicyclic train, and the group of planet row
Conjunction form, the particularly selection of planet row fastening member, the position of power-transmitting part is set and layout so that overall planet tooth
Train has different characteristics.
Therefore, how epicyclic train is improved, make its part is less, gear is more, more efficient and cost more
It is low, it is that those skilled in the art need to meet requirement of the vehicle to speed changer durability, power transmission efficiency, size etc.
Technical problems to be solved.
The content of the invention
The first object of the present invention is to provide a kind of epicyclic train.The epicyclic train has at least eight forward ranges
With two final shift speeds reversed gear, the power transfer performance and fuel economy of vehicle are remarkably improved, meanwhile, it is also fine
Solve the problems, such as above-mentioned other technologies.
The second object of the present invention is to provide a kind of automatic transmission provided with the epicyclic train.
In order to realize above-mentioned first purpose, the present invention provides a kind of epicyclic train, for automatic transmission, can obtained more
Individual gear, including：
First planet row, there is the first sun gear, the first planet carrier and the first gear ring；
Second planet row, there is the second sun gear, the second planet carrier and the second gear ring；
Compound planetary gear set, includes the third planet row and fourth planet row of combination, and third planet row has the
Three sun gears, the third line carrier and the 3rd gear ring, the fourth planet row have the 4th sun gear, fourth line carrier and the 4th tooth
Circle；
First rotary body, including input shaft and first planet carrier；
Second rotary body, including first sun gear, and be capable of selectivity be connected to fixture；
3rd rotary body, including first gear ring and the second planet carrier, and be capable of selectivity be connected to fixture；
4th rotary body, including second sun gear, its be capable of selectivity be connected to first rotary body；
5th rotary body, including second gear ring and the 3rd sun gear；
6th rotary body, including the third line carrier and the 4th gear ring, and be capable of selectivity be connected to fixture or
Selectivity is connected to the 4th rotary body；
7th rotary body, including the 4th sun gear, and be capable of selectivity be connected to the 4th rotary body；
8th rotary body, including the 3rd gear ring, fourth line carrier and the output shaft；
Six gearshift components, including clutch and brake, the selected rotation that the clutch is located in the rotary body
Between body, the brake is located between selected rotary body and fixture in the rotary body.
Preferably, the input shaft is the first rotary shaft；
First planet carrier of first rotary body and the described first rotation axis connection；
First sun gear of second rotary body and the second rotation axis connection；
The first gear ring and the second planet carrier of 3rd rotary body pass through the 3rd rotation axis connection；
Second sun gear of the 4th rotary body and the 4th rotation axis connection；
The second gear ring and the 3rd sun gear of 5th rotary body pass through the 5th rotation axis connection；
The third line carrier of 6th rotary body and the 4th gear ring pass through the 6th rotation axis connection；
4th sun gear of the 7th rotary body connects the 7th rotary shaft；
3rd gear ring of the 8th rotary body connects output shaft with fourth line carrier；
The output shaft is the 8th rotary shaft.
Preferably, six gearshifts component includes：
First clutch, it is inserted between first rotary body and the 4th rotary body；
Second clutch, it is inserted between the 4th rotary body and the 6th rotary body；
3rd clutch, it is inserted between the 4th rotary body and the 7th rotary body；
First brake, it is inserted between second rotary body and fixture；
Second brake, it is inserted between the 3rd rotary body and fixture；
3rd brake, it is inserted between the 6th rotary body and fixture.
Preferably, the multiple gear reverses gear including at least eight forward gears and at least two：
Forward gear, the second brake, the 3rd brake and first clutch combine；
Advance two gears, and the 3rd brake, first clutch and the 3rd clutch combine；
Ahead three is kept off, and the second brake, first clutch and the 3rd clutch combine；
Advance four gears, and first brake, second clutch and the 3rd clutch combine；
Advance five gears, and first brake, first clutch and the 3rd clutch combine；
Advance six gears, and the first clutch, second clutch and the 3rd clutch combine；
Advance seven gears, and first brake, first clutch and second clutch combine；
Advance eight gears, and the second brake, first clutch and second clutch combine；
First reverses gear, and first brake, the 3rd brake and first clutch combine；
Second reverses gear, and first brake, the 3rd brake and second clutch combine.
Preferably, the clutch is friction clutch, and the brake is friction brake.
Preferably, second rotary shaft is hollow shaft, by the hollow shaft, first sun gear and the first brake
The connection of motion side, first rotary shaft is located at second interior of rotating shaft.
Preferably, the 4th rotary shaft includes front rotary shaft and rear rotating shaft, by the front rotary shaft, second sun gear
Be connected with the slave end of first clutch, by rotating shaft after described, second sun gear simultaneously with the second clutch
Slave end connects with the master end of the 3rd clutch.
Preferably, first planet row is arranged for single double-pinion planetary, and second planet row is arranged for single single-stage planetary,
The third planet row arranges for single single-stage planetary, and the fourth planet row arranges for single single-stage planetary.
Preferably, the input shaft is configured to receive the component of moment of torsion and rotating speed input；The output shaft is configured to export
The component of moment of torsion and rotating speed is changed.
Preferably, the fixture is gearbox case.
In order to realize above-mentioned second purpose, the present invention also provides a kind of automatic transmission, including shell and located at described outer
Fluid torque-converter and epicyclic train inside shell, the fluid torque-converter are connected with epicyclic train, it is characterised in that
The epicyclic train is the epicyclic train described in any of the above-described.
Epicyclic train provided by the present invention applied to vehicle automatic speed variator is the product completely newly developed, and it has
The input shaft of power is received, outwards the output shaft of output power, four planet rows being arranged in same shafting, and six
Shift gears component, wherein, each planet row is equipped with sun gear, gear ring and with several planetary planet carrier, planet row
It is connected between component by rotary shaft or other connecting elements, eight rotary bodies can be formed, to realize the transmission of power, gearshift
Component can use the torque transmitters such as clutch and brake, can change the freedom of epicyclic train by operating gearshift component
Degree, the combination of different gearshift components to can be achieved different speed between input shaft and output shaft than transmitting from separating, finally
The shift speed of at least eight available forward ranges and at least two available positions of reversing gear can be obtained, with four-speed and six speed planetary gear
System compares, its fast ratio for having more gears and more optimizing, and engine can be made to meet in the case where high efficient district works different
The demand of speed, and then significantly improve the power transfer performance and fuel economy of vehicle.
In addition, the epicyclic train parts are less, gearshift component makes full use of the space between planet row, not only can be with
Shorter speed changer length is obtained, and global design is compacter, can be very good to meet vehicle to speed changer durability, dynamic
The requirement of power transmission efficiency, size, cost etc..
Automatic transmission provided by the present invention is provided with above-mentioned epicyclic train, due to above-mentioned epicyclic train have it is above-mentioned
Technique effect, the automatic transmission provided with the epicyclic train should also possess corresponding technique effect.
Brief description of the drawings
Fig. 1 is the drive path sketch of planetary gear train provided by the present invention；
Fig. 2 is a kind of specific examples of applications sketch of planetary gear train provided by the present invention；
Fig. 3 is the catenation principle figure of each component of exemplary row star wheel series of the present invention；
Fig. 4 is the operation table of each gear and torque transmitter of exemplary row star wheel series of the present invention, to illustrate each
Which gearshift component closure in the gear of determination；
Fig. 5 is the lever principle figure of the exemplary row star wheel series of the present invention.
In figure：
1. the rotary shaft of the first 2. second the 3rd the 4th rotary shaft 5. of rotary shaft 4. of rotary shaft 3. of rotary shaft the 5th
6. the rotary shaft of the 6th the 7th rotary shaft 8. of rotary shaft 7. the 8th
C1. the friction clutches of first the second friction clutches of friction clutch C2. C3. the 3rd
B1. the friction brakes of first the second friction brakes of friction brake B2. B3. the 3rd
PG1. first planet row PG2. the second planet row PG3. third planets row PG4. fourth planets row
S1. first sun gear PC1. the first planet carrier P1. the first planetary gear the first gear rings of A1.
S2. second sun gear PC2. the second planet carrier P2. the second planetary gear the second gear rings of A2.
S3. the gear rings of the 3rd sun gear PC3. the third line carrier P3. the third line star-wheels A3. the 3rd
S4. the gear rings of the 4th sun gear PC4. fourth line carrier P4. fourth line star-wheels A4. the 4th
Embodiment
The core of the present invention, which is to provide one kind, includes four planet rows and six torque transmitter mechanisms or control unit,
At least eight forward gears and at least two epicyclic trains to reverse gear can be provided.
Another core of the present invention is to provide a kind of automatic transmission provided with the epicyclic train.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
It is only limitted to implement exemplary arrangement for the explanation in description of the invention, and omits unnecessary component representation,
Same component is represented on different accompanying drawings with identical mark in the description of the present invention.In specific implementation description, number
Word and letter are for distinguishing the element with same term, and these numerals and letter do not have specific implication, not yet
Represent any order.
Fig. 1, Fig. 2 are refer to, Fig. 1 is the drive path sketch of planetary gear train provided by the present invention；Fig. 2 is carried by the present invention
For a kind of specific examples of applications sketch of planetary gear train.
In a kind of embodiment, epicyclic train provided by the invention has first set on the same axis
Planet row PG1, the second planet row PG2, third planet row PG3 and fourth planet row PG4, set on the same axis first from
Clutch C1, second clutch C2 and the 3rd clutch C3, and the first brake B1 on the same axis, the second braking are set
Device B2 and the 3rd brake B3.
First planet row PG1 is single double-pinion planetary row, and it includes the first planet carrier PC1 inputted as the row, first
Sun gear S1 and the components of the first gear ring A1 at least three, the first planetary gear P1 on the first planet carrier PC1 are three groups, every group two
It is individual, six planetary gears altogether.
Second planet row PG2 arranges for single single-stage planetary, and it includes the second sun gear S2 and second as row input
Planet carrier PC2, and the components of the second gear ring A2 at least three, the quantity of the second planetary gear P2 on the second planet carrier PC2 is four
It is individual.
Third planet row PG3 is single single-stage planetary wheel, and it includes the 3rd sun gear S3 and the 3rd as row input
Planet carrier PC3, and the components of the 3rd gear ring A3 at least three, the quantity of the third line star-wheel P3 on the third line carrier PC3 is five
It is individual.
Fourth planet row PG4 is single single-stage planetary wheel, and it includes the 4th sun gear S4, fourth line carrier PC4, Yi Ji
The components of four gear ring A4 at least three, the quantity of the fourth line star-wheel P4 on fourth line carrier PC4 is three.
Third planet, which is arranged, has the connected form of two groups formed by four components between PG3 and fourth planet row PG4, therefore
One group of compound planetary gear set is can be considered in moment, is exported as unitary form.
Also include the rotary shaft eight as connecting elements, the component of above-mentioned planet row is connected with rotary shaft, and passes through
Rotary shaft is connected with each other, and can form eight rotary bodies altogether：
First rotary body, it is made up of the first rotary shaft 1 (i.e. input shaft) first planet carrier PC1 that is rigidly connected, both are all the time
Rotated with identical rotating speed, the first rotary shaft 1 is configured to receive the component of fluid torque-converter moment of torsion and rotating speed.
Second rotary body, connected and composed by the second rotary shaft 2 and the first sun gear S1, can be optionally connected to fix
On part (such as housing).
3rd rotary body, connected and composed by the first gear ring A1, the 3rd rotary shaft 3 and the second planet carrier PC2, can be selective
It is connected on fixture.
4th rotary body, connected and composed by the 4th rotary shaft 4 and the second sun gear S2, be capable of selectivity is connected to first
Rotary body.
5th rotary body, connected and composed by the second gear ring A2, the 5th rotary shaft 5 and the 3rd sun gear S3.
6th rotary body, connected and composed by the third line carrier PC3, the 6th rotary shaft 6 and the 4th gear ring A4, can be selective
Be connected on fixture, or be optionally connected on the 4th rotary body.
7th rotary body, connected and composed by the 7th rotary shaft 7 and the 4th sun gear S4, the 4th can be optionally connected to
On rotary body.
8th rotary body, connected and composed by the 3rd gear ring A3, fourth line carrier PC4 and the 8th rotary shaft 8 (i.e. output shaft),
8th rotary shaft 8 is configured to the component that moment of torsion and rotating speed have been changed in outwards output.
According to the needs of above-mentioned connected mode and actual assembled, the size and form of each rotary shaft will be not quite similar, wherein
First rotary shaft 1 and the 8th rotary shaft 8 can be solid shafting；Second rotary shaft 2 of the second rotary body is then hollow shaft, and first too
Sun wheel S1 is connected by the hollow shaft with the first brake B1 motion side, and the first rotary shaft 1 is located inside the second rotary shaft 2；
3rd rotary shaft 3, the 5th rotary shaft 5 and the 6th rotary shaft 6 is the hollow shafts being relatively large in diameter, the planet row that inner containment is connected
And corresponding friction clutch, meanwhile, it is also Step Shaft, is changed with adapting to different radial dimensions；4th rotary shaft 4 and
Seven rotary shafts 7 both can be solid shafting or hollow shaft, wherein, the 4th rotary shaft 4 can be divided into front rotary shaft and rear turn again
Axle, the second sun gear S2 is connected by front rotary shaft with first clutch C1 slave end, while passes through rear rotating shaft and the second clutch
Device C2 slave end and the 3rd clutch C3 master end connect.
Friction clutch is placed between the rotary body selected from above-mentioned rotary body, to carry out the biography of moment of torsion and rotating speed
Pass.
First friction clutch C1 is arranged between the first rotary body and the 4th rotary body.Specifically, the 4th rotary shaft 4 is wrapped
The front rotary shaft and rear rotating shaft, the first friction clutch C1 included positioned at the second sun gear S2 front and rear sides is plugged on the first rotary shaft 1
Between the front rotary shaft of the 4th rotary shaft 4, it is alternatively that the input element of property is operated.
Because the first rotary shaft 1 forms the first rotary body together with the first planet carrier PC1, accordingly it is also possible to be considered as
One friction clutch C1 is plugged between the first planet carrier PC1 and the front rotary shaft of the 4th rotary shaft 4, similarly hereinafter.
Second friction clutch C2 is arranged between the 4th rotary body and the 6th rotary body.Specifically, it is plugged on the 4th rotation
Between the rear rotating shaft of rotating shaft 4 and the 6th rotary shaft 6, it is alternatively that the input element of property is operated.
3rd friction clutch C3 is arranged between the 4th rotary body and the 7th rotary body.Specifically, it is plugged on the 4th rotation
Between the rear rotating shaft of rotating shaft 4 and the 7th rotary shaft 7, it is alternatively that the input element of property is operated.
Friction brake is placed between the rotary body and fixture selected from above-mentioned rotary body, is expert at for limiting it
The free degree of star row, so that moment of torsion transmits along setting path.
First friction brake B1 is plugged between the second rotary shaft 2 and fixture, it is alternatively that the retaining element of property enters
Row operation.
Second friction brake B2 is plugged between the 3rd rotary shaft 3 and fixture, it is alternatively that the retaining element of property enters
Row operation.
3rd friction brake B3 is plugged between the 6th rotary shaft 6 and fixture, it is alternatively that the retaining element of property enters
Row operation.
Among the rotary shaft 8 of the first rotary shaft 1 to the 8th, can the input link of alternatively property have the 4th rotary shaft 4,
Six rotary shafts 6, the 7th rotary shaft 7, pass through the first friction clutch C1, the second friction clutch C2 and the 3rd friction clutch respectively
Device C3, it is optionally connected to the first rotary shaft 1 of input.
Among the rotary shaft 8 of the first rotary shaft 1 to the 8th, can the fixing component of alternatively property have the second rotary shaft 2,
Three rotary shafts 3, the 6th rotary shaft 6, pass through the first friction brake B1, the second friction brake B2 and the 3rd friction catch respectively
Device B3, it is selective that corresponding rotary body is affixed on fixture.
Fig. 3 is refer to, Fig. 3 is the catenation principle figure of each component of exemplary row star wheel series of the present invention.
As described above, three in first eight rotary shafts of planet row PG1 connections, and the first friction brake B1 of connection,
Second friction brake B2 and the first friction clutch C1, its first planet carrier PC1 are connected with input shaft, and selective with the
One friction clutch C1 is connected, and to receive the moment of torsion of input shaft, the first sun gear S1 is optional by the first friction brake B1
Selecting property is connected to fixture, and the first gear ring A1 and the second planet row PG2 the second planet carrier PC2 is connected, and is rubbed by second
Wipe brake B2 and be optionally connected to fixture.So, the first planet row PG1 can export two fast ratios, and one is logical
The fast ratio that the first friction clutch C1 is directly exported is crossed, another is the reduction exported after being acted on by the first friction brake B1
Fast ratio.
Three in second eight rotary shafts of planet row PG2 connections, its input planet row as power, receive from first
Planet row PG1 transmits the moment of torsion of coming；Second sun gear S2 and the 4th rotary shaft 4 by the first friction clutch C1 selectivity with
First rotary shaft 1 be connected, and by the second friction clutch C2, the 3rd friction clutch C3 respectively selectivity and third planet
Frame PC3, the 4th sun gear S4 are connected, so as to which the torque output from input shaft to the 3rd, fourth planet are arranged；Second sun gear
S2 is connected by the first friction clutch C1 with the first rotary shaft 1, receives input torque；Second planet carrier PC2 and the first gear ring
A1 is connected, and receives the moment of torsion that the first planet row PG1 is transmitted, and the second gear ring A2 and the 3rd sun gear S3 is connected；Such second planet
Row PG2 just has two power input links, and has three power output members.Friction speed input, difference can received
Six different fast ratios of output are arranged to the 3rd, fourth planet, so that the 3rd, fourth planet in the case of the output of selectivity
Row has the input of more speed, to obtain more gears.
3rd, fourth planet row is combined into a compound planetary gearsets, and the third line carrier PC3 consolidates with the 4th gear ring A4
Even, the 3rd gear ring A3 is connected with fourth line carrier PC4, and connects the output torque of the 8th rotary shaft 8 and rotating speed.This group of compound planetary
Gear train is connected with four in eight rotary shafts；3rd sun gear S3 is connected by the 5th rotary shaft 5 and the second gear ring A2, is connect
The moment of torsion of the second planet row PG2 outputs is received, the third line carrier PC3 passes through the second friction clutch C2 selectivity and the 4th rotation
The rear rotating shaft of axle 4, the second sun gear S2 are connected, and pass through the front rotary shaft of the 4th rotary shaft 4, the first friction clutch C1 selectivity
Be connected with the first rotary shaft 1；4th sun gear S4 by the 3rd friction clutch C3 selectivity with after the 4th rotary shaft 4
Rotating shaft is connected；Such structural texture causes the ability that this group of compound planetary gear set has ten fast ratios of output.
Fig. 4, Fig. 5 are refer to, Fig. 4 is the operation of each gear and torque transmitter of exemplary row star wheel series of the present invention
Table；Fig. 5 is the lever principle figure of the exemplary row star wheel series of the present invention.
It is when differential between gear that the speed of each gear for being provided according to the number of teeth shown in Fig. 2 is given in form shown in Fig. 4
Numerical value, the gearshift component of the form area representative closure of stain, the gearshift component of the form area representative disconnection of blank.The form only body
Numerical value in the case of existing example planetary gear train, and every group of numerical value can be changed.
Two horizontal lines in Fig. 5 are expressed as：" 0 " horizontal line representation speed is zero, and " 1 " representation speed turns for input
Speed and its rotating speed are identical with the first rotary shaft 1.The name in each component catenation principle figure shown in character reference picture 3 on horizontal line
Claim, the number of teeth of its spacing for each component between and mutual proportion relation determine that the straight line expression between each component is fixedly connected
Its corresponding rotary shaft, this mode are the speed manner of comparison that those skilled in the art commonly uses.
Above-mentioned friction clutch is in input and accordingly planted for the horizontal of " 1 " on position, at above-mentioned friction brake
In on the corresponding plant position of fixed horizontal line " 0 "；Speed transfer line by the friction brake or clutch by working,
Speed transfer line is finally that numerical value in the 8th rotary shaft 8 is to export under this group of torque transmitter operational circumstances in output shaft
Speed relative to input speed ratio.
The present invention has three torque transmitters while operated under each gear, and each reality is described more fully below
Apply each shift speed of planetary gear train of the invention and the speed conditions of each component in the case of scheme.
(1) forward gear
In forward gear, the second friction brake B2 of operation, the 3rd friction brake B3 and the first friction clutch C1.
First rotary shaft 1 inputs the 4th rotary shaft 4 by the first friction clutch C1 operation, and the 4th rotary shaft drives the
Two sun gear S2 input as speed " 1 "；3rd rotary shaft 3 is used as retaining element by second brake B2 operation, passes through
Second planet row PG2 effect forms a reduction speed and is delivered to the 5th rotary shaft 5；6th rotary shaft 6 passes through the 3rd friction
Brake B3 operation is delivered to S3 on the 3rd sun gear using the third line carrier PC3 as retaining element via the 5th rotary shaft 5
On speed PG3 effect arranged by third planet form forward gear speed line, the intersection point D1 of itself and the 8th rotary shaft 8 is
Forward gear speed ratio.
(2) advance two gears
When advancing two gears, the second friction brake B2 operated during forward gear is unclamped, and operate the 3rd friction clutch
Device C3.
Speed is delivered to by the rotating speed of the first rotary shaft 1 by operating the first friction clutch C1 by the 4th rotary shaft 4
On second sun gear S2, it is set to be inputted as speed " 1 "；The rotating speed of first rotary shaft 1 is simultaneously by operating the 3rd friction clutch
Speed is delivered to the 7th rotary shaft 7 by the 4th rotary shaft 4 and is delivered to the 4th sun gear S4 by device C3, defeated as speed " 1 "
Enter；It regard the 6th rotary shaft 6 as retaining element by operating the 3rd friction brake B3, so as to form the two gear speed lines that advance,
The intersection point D2 of itself and the 8th rotary shaft 8 is the two fast ratios of gear that advance.
(3) ahead three is kept off
When ahead three is kept off, the 3rd friction brake B3 operated when advancing two gears is unclamped, and operate the second friction catch
B2。
Speed is delivered to by the rotating speed of the first rotary shaft 1 by operating the first friction clutch C1 by the 4th rotary shaft 4
On second sun gear S2, inputted as speed " 1 "；The rotating speed of first rotary shaft 1 is simultaneously by operating the 3rd friction clutch C3
Speed is delivered to the 7th rotary shaft 7 by the 4th rotary shaft 4 and is delivered to the 4th sun gear S4, is inputted as speed " 1 "；It is logical
Cross the second friction brake B2 of operation and regard the 3rd rotary shaft 3 as retaining element, speed line is kept off so as to form ahead three, it is with the
The intersection point D3 of eight rotary shafts 8 is that ahead three keeps off fast ratio.
(4) advance four gears
When advancing four gears, the second friction brake B2 and the first friction clutch C1 operated during ahead three gear is unclamped,
And operate the first friction catch B1 and the second friction clutch C2.
The rotating speed of first rotary shaft 1 is delivered to the first planet carrier PC1, is inputted as speed " 1 "；Operate the first friction catch
Device B1 regard the first sun gear S1 as retaining element by the first rotary shaft 1, so that the first gear ring A1 is with the speed of a reduction
Degree output；Second, third friction clutch C2, C3 are operated, passes through the 5th rotary shaft 5, the 6th rotary shaft 6 and the 7th rotary shaft 7
Connected effect by the second planet row PG2, third planet arrange PG3, fourth planet arrange PG4 each component be connected, as
Direct transmission state；Therefore the first gear ring A1 speed will be exported directly, so as to form the four gear speed lines that advance, itself and the 8th rotation
The intersection point D4 of rotating shaft 8 is the four fast ratios of gear that advance.
(5) advance five gears
When advancing five gears, the second friction clutch C2 operated when advancing four gears is unclamped, and operate the first friction clutch
Device C1.
Speed is delivered to by the rotating speed of the first rotary shaft 1 by operating the first friction clutch C1 by the 4th rotary shaft 4
On second sun gear S2, inputted as speed " 1 "；By operating the 3rd friction clutch C3 by the 4th rotary shaft 4 and the 7th rotation
Rotating shaft 7 connects, and is delivered on the 4th sun gear S4, is inputted as speed " 1 "；The rotating speed of first rotary shaft 1 is delivered to first
Planet carrier PC1, inputted as speed " 1 ", by operating the first friction brake B1 by the second rotary shaft 2 and the first sun gear S1
It is upper to be used as retaining element, so that the first gear ring A1 is delivered to the second planet with the speed of a reduction by the 3rd rotary shaft 3
On frame PC2；The five gear speed lines that advance, its friendship with the 8th rotary shaft 8 are so formed under the speed effect of three input links
Point D5 is the five fast ratios of gear that advance.
(6) advance six gears
When advancing six gears, the first friction brake B1 operated when advancing five gears is unclamped, operates the second friction clutch
C2。
Rotating speed is delivered to second sun by the first rotary shaft 1 by operating the first friction clutch C1 by the 4th rotary shaft
Take turns S2；And the second friction clutch C2, the 3rd friction clutch C3 are operated by the 4th rotary shaft 4 and the 6th rotary shaft the 6, the 7th
Rotary shaft 7 is directly connected to so that the second planet row PG2, third planet row PG3, fourth planet row PG4 are changed into being directly connected to shape
State, the speed of the first rotary shaft 1 will be exported directly, so as to form the six gear speed lines that advance, its intersection point D6 with the 8th rotary shaft 8
As advance the six fast ratios of gear.
(7) advance seven gears
When advancing seven gears, the 3rd friction clutch C3 operated when advancing six gears is unclamped, operates the first friction brake
B1。
The rotating speed of first rotary shaft 1 is delivered to the first planet carrier PC1, is inputted as speed " 1 "；Operate the first friction catch
Device B1 regard the first sun gear S1 as retaining element by the first rotary shaft 1, so that the first gear ring A1 is with the speed of a reduction
Degree is delivered to the second planet carrier PC2；Rotating speed is passed through the 4th rotary shaft by the first rotary shaft 1 by operating the first friction clutch C1
It is delivered to the second sun gear S2；And operate the second friction clutch C2 directly to connect the first rotary shaft 1 with the 4th rotary shaft 4
Connect, rotating speed is directly delivered to the third line carrier PC3；Seven gear speed of advancing so are formed under the speed effect of three input links
Line is spent, the intersection point D7 of itself and the 8th rotary shaft 8 is the seven fast ratios of gear that advance.
(8) advance eight gears
When advancing eight gears, the first friction brake B1 operated when advancing seven gears is unclamped, operates the second friction brake
B2。
The rotating speed of first rotary shaft 1 is by operating the first friction clutch C1, by the 4th rotary shaft 4 by the second sun gear
S2 is joined directly together；And operate the second friction clutch C2 to be directly connected to the first rotary shaft 1 with the 4th rotary shaft 4, by rotating speed
It is directly delivered to the third line carrier PC3；Second friction brake B2 is using the 3rd rotary shaft 3 as retaining element, so at two
The speed effect of input link is lower to form the eight gear speed lines that advance, and the intersection point D8 of itself and the 8th rotary shaft 8 is eight gear speed of advancing
Than.
(9) first reverse gear
When first reverses gear, the first friction brake B1 of operation, the 3rd friction brake B3 and the first friction clutch C1.
By operating the first friction clutch C1, the first rotary shaft 1 passes through the first friction clutch C1 and the 4th rotary shaft 4
It is directly connected to the second sun gear S2；The second rotary shaft 2 and the first sun gear S1 are made by operating the first friction brake B1
For retaining element, due to the effect by the first planet row PG1, the first gear ring A1 will pass through the 3rd rotation with the rotating speed of a reduction
Axle 3 is delivered to the second planet carrier PC2；Second planet row PG2 is under the input action of two rotating speeds to the second gear ring A2 outputs one
The rotating speed of individual reduction, and be delivered to by the 5th rotary shaft 5 on the 3rd sun gear S3；Will by operating the 3rd friction brake B3
6th rotary shaft 6 is used as retaining element, and the third line carrier PC3 is fixed, and PG3 effect is arranged by the 3rd by third planet
Gear ring A3 exports a reverse rotating speed, forms the first reverse speed line, and the intersection point R1 of itself and the 8th rotary shaft 8 is first to reverse gear
Fast ratio.
(10) second reverse gear
When second reverses gear, the first the first friction clutch C1 operated when reversing gear is unclamped, operates the second friction clutch
C2。
It regard the second rotary shaft 2 and the first sun gear S1 as retaining element by operating the first friction brake B1, due to
By the first planet row PG1 effect, the first gear ring A1 will be delivered to the second row with the rotating speed of a reduction by the 3rd rotary shaft 3
Carrier PC2；It is directly connected to by operating the rotary shafts 4 of the second friction clutch C2 the 4th with the 6th rotary shaft 6；Pass through operation
3rd brake B3 by the 6th rotary shaft 6, the 4th rotary shaft 4 and the second coupled sun gear S2, the third line carrier PC3,
4th gear ring A4 is as retaining element；Second planet carrier PC2 transmits the speed of a reduction to the second planet row PG2, and passes through
The 3rd sun gear S3 is delivered to by the 5th rotary shaft 5 after speedup；By third planet row PG3 to act on the 3rd gear ring A3 defeated
Go out a reverse rotating speed, form the second reverse speed line, the intersection point R2 of itself and the 8th rotary shaft 8 is the 2nd to reverse gear fast ratio.
Each gear speed line cited hereinabove is shown in Figure 5, each to keep off speed line and the vertical curve of excessively each component name
Intersection point is speed conditions of the component in the case of the gear.
Explanation is needed exist for, the one kind that gives merely exemplary Fig. 2 specifically constructs, the digital generation below each component
The number of teeth of the table component in this special case.Because planet row can convert order, torque transmitter can be placed on not
Between same construction location, therefore the specific number of teeth is not as the qualifications of this patent.
Similarly, this paper planetary gearsets, forward gear, reverse gear, rotary shaft, fast ratio, friction clutch, friction brake
Number is all exemplary.Those skilled in the art will realize that the present invention is not restricted to these example values, and each
The specific numerical value of group can be modified.
Above-mentioned epicyclic train can provide at least eight forward ranges and at least two changes for reversing gear fast ratio, therefore can be with
Power transfer efficiency and fuel economy are significantly improved, and parts are less, length is shorter, structure is compacter, cost is lower,
Performance is relatively reliable.
Further, since two fast ratios that reverse gear can be provided, therefore performance of reversing gear can be significantly improved.
Except epicyclic train, the present invention also provides a kind of automatic transmission, including shell and the liquid located at enclosure
Power torque-converters and epicyclic train, wherein, fluid torque-converter is connected with epicyclic train, and epicyclic train is described above
Epicyclic train, remaining structure refer to prior art, just repeats no more.
Automatic transmission provided by the present invention and its epicyclic train are described in detail above.It is used herein
Specific case is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands
The core concept of the present invention.It should be pointed out that for those skilled in the art, the principle of the invention is not being departed from
On the premise of, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the claims in the present invention
Protection domain in.
Claims (9)
1. a kind of epicyclic train, for automatic transmission, multiple gears can be obtained, it is characterised in that including：
First planet row, there is the first sun gear, the first planet carrier and the first gear ring；
Second planet row, there is the second sun gear, the second planet carrier and the second gear ring；
Third planet is arranged, and has the 3rd sun gear, the third line carrier and the 3rd gear ring；
Fourth planet is arranged, and has the 4th sun gear, fourth line carrier and the 4th gear ring；
First rotary body, including input shaft and first planet carrier；
Second rotary body, including first sun gear, and be capable of selectivity be connected to fixture；
3rd rotary body, including first gear ring and the second planet carrier, and be capable of selectivity be connected to fixture；
4th rotary body, including second sun gear, its be capable of selectivity be connected to first rotary body；
5th rotary body, including second gear ring and the 3rd sun gear；
6th rotary body, including the third line carrier and the 4th gear ring, and be capable of selectivity be connected to fixture or selection
Property is connected to the 4th rotary body；
7th rotary body, including the 4th sun gear, and be capable of selectivity be connected to the 4th rotary body；
8th rotary body, including the 3rd gear ring, fourth line carrier and the output shaft；
Six gearshift components, including clutch and brake, the selected rotary body that the clutch is located in the rotary body it
Between, the brake is located between selected rotary body and fixture in the rotary body；
The input shaft is the first rotary shaft；
First planet carrier of first rotary body and the described first rotation axis connection；
First sun gear of second rotary body and the second rotation axis connection；
The first gear ring and the second planet carrier of 3rd rotary body pass through the 3rd rotation axis connection；
Second sun gear of the 4th rotary body and the 4th rotation axis connection；
The second gear ring and the 3rd sun gear of 5th rotary body pass through the 5th rotation axis connection；
The third line carrier of 6th rotary body and the 4th gear ring pass through the 6th rotation axis connection；
4th sun gear of the 7th rotary body connects the 7th rotary shaft；
3rd gear ring of the 8th rotary body connects output shaft with fourth line carrier；
The output shaft is the 8th rotary shaft.
2. epicyclic train according to claim 1, it is characterised in that six gearshifts component includes：
First clutch, it is inserted between first rotary body and the 4th rotary body；
Second clutch, it is inserted between the 4th rotary body and the 6th rotary body；
3rd clutch, it is inserted between the 4th rotary body and the 7th rotary body；
First brake, it is inserted between second rotary body and fixture；
Second brake, it is inserted between the 3rd rotary body and fixture；
3rd brake, it is inserted between the 6th rotary body and fixture.
3. epicyclic train according to claim 1, it is characterised in that six gearshifts component includes：
First clutch, it is inserted between first rotary shaft and the 4th rotary shaft；
Second clutch, it is inserted between the 4th rotary shaft and the 6th rotary shaft；
3rd clutch, it is inserted between the 4th rotary shaft and the 7th rotary shaft；
First brake, it is inserted between second rotary shaft and fixture；
Second brake, it is inserted between the 3rd rotary shaft and fixture；
3rd brake, it is inserted between the 6th rotary shaft and fixture.
4. the epicyclic train according to Claims 2 or 3, it is characterised in that before the multiple gear includes at least eight
Enter gear and at least two to reverse gear：
Forward gear, the second brake, the 3rd brake and first clutch combine；
Advance two gears, and the 3rd brake, first clutch and the 3rd clutch combine；
Ahead three is kept off, and the second brake, first clutch and the 3rd clutch combine；
Advance four gears, and first brake, second clutch and the 3rd clutch combine；
Advance five gears, and first brake, first clutch and the 3rd clutch combine；
Advance six gears, and the first clutch, second clutch and the 3rd clutch combine；
Advance seven gears, and first brake, first clutch and second clutch combine；
Advance eight gears, and the second brake, first clutch and second clutch combine；
First reverses gear, and first brake, the 3rd brake and first clutch combine；
Second reverses gear, and first brake, the 3rd brake and second clutch combine.
5. epicyclic train according to claim 4, it is characterised in that the clutch is friction clutch, the system
Dynamic device is friction brake.
6. the epicyclic train according to claim 1 or 3, it is characterised in that second rotary shaft is hollow shaft, is passed through
The hollow shaft, first sun gear are connected with the motion side of the first brake, and first rotary shaft is positioned at the described second rotation
Inside rotating shaft.
7. the epicyclic train according to claim 1 or 3, it is characterised in that the 4th rotary shaft include front rotary shaft and
Rotating shaft afterwards, by the front rotary shaft, the connection of the slave end of second sun gear and first clutch, by rotating shaft after described,
Second sun gear is connected with the slave end of the second clutch and the master end of the 3rd clutch simultaneously.
8. according to the epicyclic train described in any one of claims 1 to 3, it is characterised in that first planet row is single
Double-pinion planetary is arranged, and second planet row is arranged for single single-stage planetary, and the third planet row arranges for single single-stage planetary, described
Fourth planet row arranges for single single-stage planetary.
9. a kind of automatic transmission, including shell and the fluid torque-converter and epicyclic train located at the enclosure, described
Fluid torque-converter is connected with epicyclic train, it is characterised in that the epicyclic train is the claims 1 to 8
Epicyclic train described in one.
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| CN201410482453.2A CN105485271B (en) | 2014-09-19 | 2014-09-19 | A kind of automatic transmission and its epicyclic train |
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| CN201410482453.2A CN105485271B (en) | 2014-09-19 | 2014-09-19 | A kind of automatic transmission and its epicyclic train |
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| CN105485271B true CN105485271B (en) | 2018-01-05 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180003158A (en) * | 2016-06-30 | 2018-01-09 | 현대자동차주식회사 | Planetary gear train of automatic transmission for vehicles |
| KR101865731B1 (en) * | 2016-07-13 | 2018-06-08 | 현대자동차 주식회사 | Planetary gear train of automatic transmission for vehicles |
| CN107514445B (en) * | 2017-08-28 | 2024-01-09 | 无锡职业技术学院 | Six-speed transmission based on improved lever method |
| CN108194586B (en) * | 2017-12-29 | 2022-06-21 | 广州汽车集团股份有限公司 | Three-planet-row automatic transmission and vehicle |
| CN111637202B (en) * | 2020-06-28 | 2024-05-07 | 柳州职业技术学院 | Eight-speed automatic transmission and power transmission method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620798Y (en) * | 2003-05-02 | 2004-06-16 | 李建国 | Planet transmission automatic speed variator |
| CN1746530A (en) * | 2004-09-07 | 2006-03-15 | 现代自动车株式会社 | Six-speed powertrain of an automatic transmission |
| DE102006006638A1 (en) * | 2006-02-14 | 2007-09-06 | Zf Friedrichshafen Ag | Multi-speed transmission |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4655941B2 (en) * | 2006-01-12 | 2011-03-23 | マツダ株式会社 | Automatic transmission |
| KR100931048B1 (en) * | 2008-02-20 | 2009-12-10 | 현대자동차주식회사 | Gear train of car automatic transmission |
| KR100936304B1 (en) * | 2008-04-30 | 2010-01-12 | 현대 파워텍 주식회사 | Power train for automatic transmission |
| KR101072313B1 (en) * | 2008-06-13 | 2011-10-11 | 현대자동차주식회사 | Power train of automatic transmission |
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2014
- 2014-09-19 CN CN201410482453.2A patent/CN105485271B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620798Y (en) * | 2003-05-02 | 2004-06-16 | 李建国 | Planet transmission automatic speed variator |
| CN1746530A (en) * | 2004-09-07 | 2006-03-15 | 现代自动车株式会社 | Six-speed powertrain of an automatic transmission |
| DE102006006638A1 (en) * | 2006-02-14 | 2007-09-06 | Zf Friedrichshafen Ag | Multi-speed transmission |
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