CN108397544A - Gearbox rotating speed synchronous method - Google Patents
Gearbox rotating speed synchronous method Download PDFInfo
- Publication number
- CN108397544A CN108397544A CN201810214311.6A CN201810214311A CN108397544A CN 108397544 A CN108397544 A CN 108397544A CN 201810214311 A CN201810214311 A CN 201810214311A CN 108397544 A CN108397544 A CN 108397544A
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- China
- Prior art keywords
- synchronization time
- value
- rotational frequency
- frequency synchronization
- rated rotational
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
Abstract
The invention discloses a kind of gearbox rotating speed synchronous method, obtain car status information；According to car status information, rated rotational frequency synchronization time is obtained；According to rated rotational frequency synchronization time, clutch compresses degree and reduces engine speed when adjusting synchronous rotational speed；Rated rotational frequency synchronization time, wherein for (Af+B+C+D)/KE f was adaptation value, and the value 1 when there is vehicle driving mode to select, is otherwise 0；B is the simulation numeral value of target gear；C is the simulation numeral value of shifting type；D is the percent value of accelerator open degree；K is adjustment factor；E is regulating constant.Corresponding rated rotational frequency synchronization time is obtained by car status information, and clutch compresses degree and reduces engine speed when corresponding according to time adjusting synchronous rotational speed, this mode considers many factors, more fine, the rapid shift of realization while ensureing smooth gear shifting of adjusting.
Description
Technical field
The present invention relates to gearbox rotating speed synchronous method.
Background technology
Compare double-clutch automatic gearbox (Dual Clutch Transmiss ion, DCT) other automatic transmissions
The advantage that dynamic transmission efficiency is high, shift speed is fast, fuel-efficient, therefore, double-clutch automatic gearbox receives more and more masters
The favor of machine factory.
Operating mode of shifting gears is most frequently used in vehicle operation, and shift speed is DCT gearboxes relative to other changes
Where the advantage of fast case.But shift is too fast, it is easy to cause shift shock.
Invention content
The object of the present invention is to provide a kind of gearbox rotating speed synchronous method, reduce the impact in shift process, and raising is changed
Keep off ride comfort and comfort.
The gearbox rotating speed synchronous method of the present invention obtains car status information；According to the car status information, obtain
Rated rotational frequency synchronization time；According to the rated rotational frequency synchronization time, clutch compresses degree and reduction when adjusting synchronous rotational speed
Engine speed；The car status information includes driving mode, target gear, shifting type and accelerator open degree；The standard
Rotating speed is synchronization time：(Af+B+C+D) wherein, f is adaptation value to/KE, the value 1 when there is vehicle driving mode to select, otherwise
It is 0；B is the simulation numeral value of the target gear；C is the simulation numeral value of shifting type；D is the percentage of accelerator open degree
Value；K is adjustment factor；E is regulating constant.
Gearbox rotating speed synchronous method as described above, wherein the adjustment factor K=xB+yC+zD, wherein x and z are
Positive number, y negatives, and x+z ＞ | y |.
Gearbox rotating speed synchronous method as described above, wherein the rated rotational frequency synchronization time is：(Af+B+C+D)/
(B-0.2C+D)E；Wherein, 0.1≤A, it is progressive with 0.1, different driving modes is corresponded to respectively；1≤B, it is progressive with 1, it is right respectively
Answer different stalls, also correspondence is reversed gear simultaneously when value 1；2≤C≤5；It is progressive with 1, correspond to respectively power downshift, it is unpowered downshift,
Power upshifts and unpowered upshift；0≤D≤1；10≤E≤20.
Gearbox rotating speed synchronous method as described above, wherein the clutch compresses degree and the rated rotational frequency is same
It is in inverse ratio to walk the time；The decreasing value of engine speed and the rated rotational frequency synchronization time are proportional.
Gearbox rotating speed synchronous method as described above, wherein actual speed synchronization time is obtained, when actual speed synchronizes
The difference of time and rated rotational frequency synchronization time are allowing in difference range, then complete to synchronize.
Gearbox rotating speed synchronous method as described above, wherein when actual speed synchronization time is synchronous with rated rotational frequency
Between difference be more than to allow difference range, then send Regulate signal, change the clutch and compress degree and the rated rotational frequency
The inverse relation value of synchronization time；And/or the direct ratio of the decreasing value and the rated rotational frequency synchronization time of modification engine speed
Relation value.
Gearbox rotating speed synchronous method as described above, wherein vehicle stability parameter is obtained, in the stationarity parameter
When the value that is above standard, the adjustment factor is changed.
The gearbox rotating speed synchronous method of the present invention obtains corresponding rated rotational frequency synchronization time by car status information,
And clutch compresses degree and reduces engine speed when corresponding according to time adjusting synchronous rotational speed, this mode considers more
Kind of factor, adjusting it is more fine, it is more steady when making shift, avoid the impact that velocity jump is brought, that is, ensureing to shift gears
Rapid shift is realized while ride comfort.
Description of the drawings
The step of Fig. 1 is gearbox rotating speed synchronous method of the present invention is schemed.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention discloses a kind of gearbox rotating speed synchronous method, and step S1 obtains car status information；Step S2, according to
The car status information obtains rated rotational frequency synchronization time；Step S3 is adjusted same according to the rated rotational frequency synchronization time
Clutch compresses degree and reduces engine speed when walking rotating speed.
Wherein, car status information includes at least driving mode, target gear, shifting type and accelerator open degree.Drive mould
Formula common are motor pattern (S mode), snow field mode (W patterns) etc., these have different classification according to different vehicles,
The application also in step s 2, also can take into account whether vehicle has the function of switch mode, if the not function, can be discharged
The driving mode influences the calculating of rotating speed synchronization time, specific to illustrate below.
Target gear and shifting type are all the artificial simulation numeral values assigned to different objects, in order to carry out
It calculates.Accelerator open degree is percentages, directly reacts the opening and closing degree of throttle, is closed completely value 0, opens value 1 completely.
Illustrate below in step S2, the acquisition pattern of rated rotational frequency synchronization time (hereinafter referred to as standard time)：(Af+B
+C+D)/KE；F is adaptation value, and the value 1 when there is vehicle driving mode to select, is otherwise 0, that is, mentioned above, such as
Fruit vehicle has the function of humidifying mode switching, then f takes 1, and to consider influences of the A to final result, otherwise f takes 0, does not consider
The influence of A.
B is the simulation numeral value of the target gear；C is the simulation numeral value of shifting type；D is the percentage of accelerator open degree
Ratio；K is adjustment factor；E is regulating constant.
The function of adjustment factor is the whole reliability of balance, such as when accelerator open degree is big, when target gear is also higher, is shown
Right speed opposite can be in fast state, at this moment the standard time will accordingly increase, avoid in the short time, be in the vehicle of high speed
Not smooth sense when rotating speed matching is carried out, and avoids causing danger when high-speed motion.
Specifically, adjustment factor K=xB+yC+zD, wherein x and z is positive number, y negatives, and x+z ＞ | y |.Preferably, it marks
Quasi- rotating speed synchronization time is：(Af+B+C+D)/(B-0.2C+D)E；It is -0.2 that i.e. x and z values, which are 1, y values,.
Wherein, 0.1≤A, it is progressive with 0.1, different driving modes is corresponded to respectively；Such as the conventional mould in urban road
Formula, value 0.1, snowy day use snow field mode, and value 0.2, the values such as off-road mode 0.3, certainly, this is only example, usually
Riving condition is more harsh, which then can corresponding higher.
1≤B, it is progressive with 1, correspond to different stalls respectively, also correspondence is reversed gear simultaneously when value 1；Such as it one grade and reverses gear and takes
Value 1, two gear values 2, three gear values 3 etc..
2≤C≤5；It is progressive with 1, correspond to respectively power downshift (value 2), unpowered downshift (value 3), power upshift (take
Value 4) and unpowered upshift (value 5).
0≤D≤1, this is appreciated that accelerator open degree is percentage, has been described above and illustrate.10≤E≤20, this
In the value of E can be modified according to actual conditions, only preferred embodiment herein.
The standard time unit obtained in the above manner is the second.Such as (obviously has a mould in normal mode A=0.1
The function of switching between formula, thus x take 1), target gear be three gear, B=3, shifting type be power upshift C=4, accelerator open degree D
=0.5, via aforesaid way, adjustment factor K=B-0.2C+D is final to obtain the standard time as (0.1*1+3+4+0.5)/(3-
0.2*4+0.5) * 10=0.26 seconds, that is, in this case, the standard time is 0.26 second.
According to the above-mentioned standard time, the cash pledge degree of clutch is adjusted, also engine is adjusted, makes its drop
The slow-speed of revolution.In general, clutch compresses degree and is in the rated rotational frequency synchronization time inverse ratio；The decreasing value of engine speed with
The rated rotational frequency synchronization time is proportional.That is, the standard time is shorter, the degree that clutch compresses is bigger, and reduces
Velocity amplitude (decreasing value of speed) it is smaller.
This method also obtains actual speed synchronization time, when the difference of actual speed synchronization time and rated rotational frequency synchronization time
Value is allowing in difference range, then completes to synchronize.When actual speed synchronization time (hereinafter referred to as real time) and rated rotational frequency
The difference of synchronization time is more than to allow difference range, then sends Regulate signal, changes the clutch and compresses degree and the mark
The inverse relation value of quasi- rotating speed synchronization time；And/or decreasing value and the rated rotational frequency synchronization time of modification engine speed
Proportional relation value.
That is when the real time is excessive relative to standard time deviation, degree can be compressed to clutch and/or is moved
The decreasing value of machine rotating speed is adjusted, and will adjust the real time into standard time or corresponding allowable range, general practical
Time floats in ± the 10% of standard time can be considered qualified, otherwise need to carry out above-mentioned adjusting.
Certainly, this method also obtains vehicle stability parameter, when the stationarity parameter is above standard value, described in modification
Adjustment factor.The stationarity parameter mainly for vehicle shift gears etc. operation when, the impact that occurs in rotating speed synchronizing process.Its
The variation of speed in the process can be voluntarily detected by sensor, if there is bust or uprush, specific numerical value is according to reality
It needs to be configured.Can also be to be fed back by driver or passenger.
By this method, a variety of situations are considered, obtain the standard time, and compare standard time and real time, phase
The adjusting answered reduces the impact in shift process, improves smooth gear shifting and comfort.
The structure, feature and effect of the present invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Change made by thinking, or is revised as the equivalent embodiment of equivalent variations, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (7)
1. a kind of gearbox rotating speed synchronous method, which is characterized in that
Obtain car status information；
According to the car status information, rated rotational frequency synchronization time is obtained；
According to the rated rotational frequency synchronization time, clutch compresses degree and reduces engine speed when adjusting synchronous rotational speed；
The car status information includes driving mode, target gear, shifting type and accelerator open degree；
The rated rotational frequency synchronization time is：(Af+B+C+D)/KE
Wherein, f is adaptation value, and the value 1 when there is vehicle driving mode to select, is otherwise 0；B is the mould of the target gear
Quasi- digital value；C is the simulation numeral value of shifting type；D is the percent value of accelerator open degree；K is adjustment factor；E is to adjust often
Number.
2. gearbox rotating speed synchronous method according to claim 1, which is characterized in that
The adjustment factor K=xB+yC+zD, wherein x and z is positive number, y negatives, and x+z ＞ | y |.
3. gearbox rotating speed synchronous method according to claim 1 or 2, which is characterized in that
The rated rotational frequency synchronization time is：(Af+B+C+D)/(B-0.2C+D)E；Wherein,
0.1≤A, it is progressive with 0.1, different driving modes is corresponded to respectively；
1≤B, it is progressive with 1, correspond to different stalls respectively, also correspondence is reversed gear simultaneously when value 1；
2≤C≤5；It is progressive with 1, power downshift, unpowered downshift, power upshift and unpowered upshift are corresponded to respectively；
0≤D≤1；
10≤E≤20。
4. gearbox rotating speed synchronous method according to claim 1, which is characterized in that
The clutch compresses degree and is in the rated rotational frequency synchronization time inverse ratio；
The decreasing value of engine speed and the rated rotational frequency synchronization time are proportional.
5. gearbox rotating speed synchronous method according to claim 4, which is characterized in that
Actual speed synchronization time is obtained, when the difference of actual speed synchronization time and rated rotational frequency synchronization time are allowing difference
In range, then complete to synchronize.
6. gearbox rotating speed synchronous method according to claim 5, which is characterized in that
When the difference of actual speed synchronization time and rated rotational frequency synchronization time are more than to allow difference range, then adjusting letter is sent
Number, change the inverse relation value that the clutch compresses degree and the rated rotational frequency synchronization time；And/or modification engine turns
The proportional relation value of the decreasing value and the rated rotational frequency synchronization time of speed.
7. gearbox rotating speed synchronous method according to claim 1, which is characterized in that
It obtains vehicle stability parameter and changes the adjustment factor when the stationarity parameter is above standard value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214311.6A CN108397544B (en) | 2018-03-15 | 2018-03-15 | Gearbox revolving speed synchronous method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214311.6A CN108397544B (en) | 2018-03-15 | 2018-03-15 | Gearbox revolving speed synchronous method |
Publications (2)
| Publication Number | Publication Date |
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| CN108397544A true CN108397544A (en) | 2018-08-14 |
| CN108397544B CN108397544B (en) | 2019-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214311.6A Active CN108397544B (en) | 2018-03-15 | 2018-03-15 | Gearbox revolving speed synchronous method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355313A (en) * | 2022-08-31 | 2022-11-18 | 东风商用车有限公司 | Reverse gear vehicle speed adjusting method, device and equipment and readable storage medium |
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|---|---|---|---|---|
| JPH11198682A (en) * | 1998-01-14 | 1999-07-27 | Toyota Motor Corp | Hydraulic controller for vehicular automatic transmission |
| JPH11264461A (en) * | 1997-08-21 | 1999-09-28 | Toyota Motor Corp | Hydraulic control device of automatic transmission for vehicle |
| CN105240515A (en) * | 2015-11-17 | 2016-01-13 | 安徽江淮汽车股份有限公司 | Rotating speed synchronization control method of wet double-clutch transmission |
| CN106938648A (en) * | 2017-04-07 | 2017-07-11 | 安徽江淮汽车集团股份有限公司 | The power downshift scaling method and system of double clutch gearbox |
| CN107084240A (en) * | 2016-02-15 | 2017-08-22 | 现代自动车株式会社 | Gear-shifting control method for DCT vehicles |
-
2018
- 2018-03-15 CN CN201810214311.6A patent/CN108397544B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264461A (en) * | 1997-08-21 | 1999-09-28 | Toyota Motor Corp | Hydraulic control device of automatic transmission for vehicle |
| JPH11198682A (en) * | 1998-01-14 | 1999-07-27 | Toyota Motor Corp | Hydraulic controller for vehicular automatic transmission |
| CN105240515A (en) * | 2015-11-17 | 2016-01-13 | 安徽江淮汽车股份有限公司 | Rotating speed synchronization control method of wet double-clutch transmission |
| CN107084240A (en) * | 2016-02-15 | 2017-08-22 | 现代自动车株式会社 | Gear-shifting control method for DCT vehicles |
| CN106938648A (en) * | 2017-04-07 | 2017-07-11 | 安徽江淮汽车集团股份有限公司 | The power downshift scaling method and system of double clutch gearbox |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355313A (en) * | 2022-08-31 | 2022-11-18 | 东风商用车有限公司 | Reverse gear vehicle speed adjusting method, device and equipment and readable storage medium |
| CN115355313B (en) * | 2022-08-31 | 2023-07-07 | 东风商用车有限公司 | Reverse gear vehicle speed adjusting method, device and equipment and readable storage medium |
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| CN108397544B (en) | 2019-05-28 |
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