CN108397544B - Gearbox revolving speed synchronous method - Google Patents
Gearbox revolving speed synchronous method Download PDFInfo
- Publication number
- CN108397544B CN108397544B CN201810214311.6A CN201810214311A CN108397544B CN 108397544 B CN108397544 B CN 108397544B CN 201810214311 A CN201810214311 A CN 201810214311A CN 108397544 B CN108397544 B CN 108397544B
- Authority
- CN
- China
- Prior art keywords
- synchronization time
- value
- rotational frequency
- frequency synchronization
- rated rotational
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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 revolving 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 realization shift rapidly while guaranteeing smooth gear shifting of adjusting.
Description
Technical field
The present invention relates to gearbox revolving speed synchronous method.
Background technique
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 condition of shifting gears is most frequently used in vehicle operation, and shift speed is DCT gearbox relative to other changes
Where the advantage of fast case.But shift is too fast, it is easy to cause shift shock.
Summary of the invention
The object of the present invention is to provide a kind of gearbox revolving speed synchronous method, reduce the impact in shift process, and raising is changed
Keep off ride comfort and comfort.
Gearbox revolving speed synchronous method of the 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
Revolving speed synchronization time are as follows: wherein, f is adaptation value to (Af+B+C+D)/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 revolving speed synchronous method as described above, wherein the adjustment factor K=xB+yC+zD, wherein x and z are
Positive number, y negative, and x+z > | y |.
Gearbox revolving speed synchronous method as described above, wherein the rated rotational frequency synchronization time are as follows: (Af+B+C+D)/
(B-0.2C+D)E；Wherein, 0.1≤A, it is progressive with 0.1, respectively correspond different driving modes；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, respectively correspond power downshift, it is unpowered downshift,
Power upshift and unpowered upshift；0≤D≤1；10≤E≤20.
Gearbox revolving speed synchronous method as described above, wherein the clutch compresses degree and the rated rotational frequency is same
Walking the time is in inverse ratio；The decreasing value of engine speed and the rated rotational frequency synchronization time are proportional.
Gearbox revolving speed synchronous method as described above, wherein actual speed synchronization time is obtained, when actual speed is synchronous
The difference of time and rated rotational frequency synchronization time are allowing then to complete to synchronize in difference range.
Gearbox revolving 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 adjustment signal, modify the clutch and compress degree and the rated rotational frequency
The inverse relation value of synchronization time；And/or the decreasing value and the direct ratio of the rated rotational frequency synchronization time of modification engine speed
Relation value.
Gearbox revolving speed synchronous method as described above, wherein vehicle stability parameter is obtained, in the stationarity parameter
It is above standard when being worth, modifies the adjustment factor.
Gearbox revolving speed synchronous method of the 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, guaranteeing to shift gears
Shift rapidly is realized while ride comfort.
Detailed description of the invention
The step of Fig. 1 is gearbox revolving speed synchronous method of the present invention is schemed.
Specific embodiment
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 for explaining only the invention, and is not construed as limiting the claims.
The present invention discloses a kind of gearbox revolving 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 revolving 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 mode) 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 revolving speed synchronization time, specific to will do it explanation 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, fully opens value 1.
Illustrate in step S2 below, 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, to consider influence 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, and at this moment the standard time will accordingly increase, and avoid in the short time, the vehicle in high speed
Not smooth sense when revolving 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 negative, and x+z > | y |.Preferably, it marks
Quasi- revolving speed synchronization time are as follows: (Af+B+C+D)/(B-0.2C+D) E；It is -0.2 that i.e. x and z value, which is 1, y value,.
Wherein, 0.1≤A, it is progressive with 0.1, respectively correspond different driving modes；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 be higher accordingly.
1≤B, it is progressive with 1, respectively correspond different stalls, also correspondence is reversed gear simultaneously when value 1；Such as it one grade and reverses gear and takes
Value 1, second gear value 2, three gear values 3 etc..
2≤C≤5；It is progressive with 1, respectively correspond 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 be illustrated.10≤E≤20, this
In the value of E can modify according to the actual situation, 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 the rated rotational frequency synchronization time is in 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 then to complete to synchronize in difference range.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 adjustment signal, modifies the clutch and compresses degree and the mark
The inverse relation value of quasi- revolving 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 revolving speed is adjusted, and will adjust the real time into standard time or corresponding allowed band, 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 and is worth, described in modification
Adjustment factor.The stationarity parameter mainly for vehicle shift gears etc. operation when, the impact that occurs in revolving 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.It is also possible to feed back by driver or passenger.
By this method, a variety of situations are comprehensively 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.
Structure, feature and effect of the 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 does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, 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 revolving 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 are as follows: (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；A is the simulation numeral value of driving mode.
2. gearbox revolving 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 negative, and x+z > | y |.
3. gearbox revolving speed synchronous method according to claim 2, which is characterized in that
The rated rotational frequency synchronization time are as follows: (Af+B+C+D)/(B-0.2C+D) E；Wherein,
0.1≤A, it is progressive with 0.1, respectively correspond different driving modes；
1≤B, it is progressive with 1, respectively correspond different stalls, also correspondence is reversed gear simultaneously when value 1；
2≤C≤5；It is progressive with 1, respectively correspond power downshift, unpowered downshift, power upshift and unpowered upshift；
0≤D≤1；
10≤E≤20。
4. gearbox revolving speed synchronous method according to claim 1, which is characterized in that
The clutch compresses degree and the rated rotational frequency synchronization time is in inverse ratio；
The decreasing value of engine speed and the rated rotational frequency synchronization time are proportional.
5. gearbox revolving 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 revolving 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, modify the inverse relation value that the clutch compresses degree and the rated rotational frequency synchronization time；And/or modification engine turns
The decreasing value of speed and the proportional relation value of the rated rotational frequency synchronization time.
7. gearbox revolving speed synchronous method according to claim 1, which is characterized in that
It obtains vehicle stability parameter and modifies the adjustment factor when the stationarity parameter is above standard and is worth.
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 |
|---|---|
| CN108397544A CN108397544A (en) | 2018-08-14 |
| CN108397544B true CN108397544B (en) | 2019-05-28 |
Family
ID=63091801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214311.6A Active CN108397544B (en) | 2018-03-15 | 2018-03-15 | Gearbox revolving speed synchronous method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108397544B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (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 |
| JP2976956B2 (en) * | 1998-01-14 | 1999-11-10 | トヨタ自動車株式会社 | Hydraulic control device for automatic transmission for vehicles |
| CN105240515B (en) * | 2015-11-17 | 2017-07-28 | 安徽江淮汽车集团股份有限公司 | A kind of wet-type dual-clutch transmission synchronization control method |
| KR101806666B1 (en) * | 2016-02-15 | 2017-12-08 | 현대자동차주식회사 | Shifting control method for vehicles with dual clutch transmission |
| CN106938648B (en) * | 2017-04-07 | 2019-06-04 | 安徽江淮汽车集团股份有限公司 | The power downshift scaling method and system of double clutch gearbox |
-
2018
- 2018-03-15 CN CN201810214311.6A patent/CN108397544B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108397544A (en) | 2018-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102008052716B4 (en) | Transmission control method for a continuously variable transmission | |
| CN104976243B (en) | The pre-oiling pressure adaptive method and system of wet dual-clutch automatic transmission | |
| CN106541938B (en) | The control method and double-clutch speed changer of double-clutch speed changer shift | |
| US6508742B2 (en) | Procedure for improvement of the shifting speed | |
| RU2338099C2 (en) | Gearshift anti-jerk device | |
| GB2326682A (en) | Drive train control varies engine torque during gear shift | |
| CN112303225B (en) | Method for improving gear-up comfort of small and medium accelerator opening degree of double-clutch automatic gearbox | |
| EP1977944A2 (en) | Transmission control method and apparatus for a vehicle | |
| CN101825171B (en) | Control system for automatic transmission | |
| CN105452734A (en) | Transmission control device for continuously variable transmission | |
| CN101825169B (en) | Control apparatus and control method for automatic transmission | |
| US20020148311A1 (en) | Automatic transmission | |
| CN101042187A (en) | Method for learning the flow rate of hydraulic fluid in an automatic transmission | |
| US20040192504A1 (en) | Apparatus and method for controlling clutch of mechanical automatic transmission | |
| Zhang et al. | System dynamic modelling and adaptive optimal control for automatic clutch engagement of vehicles | |
| CN101832387A (en) | Gear switching control method of AMT (Automatic Mechanical Transmission) | |
| JPS5874938A (en) | Automatic multistage variable-speed control method for automobile | |
| CN113291163B (en) | Torque control method and system of automatic transmission automobile and automobile | |
| CN107117160A (en) | A kind of drive system of electric automobile and control method | |
| US20080085815A1 (en) | Method For Adapting An Operating Mode Of An Automatic Variable Speed Transmission | |
| CN108397544B (en) | Gearbox revolving speed synchronous method | |
| US20160377176A1 (en) | Active rev-matching for manual transmissions | |
| US11292472B2 (en) | Method and control device for operating a drivetrain | |
| Hashchuk et al. | Optimal laws of gear shift in automotive transmissions | |
| JP2012163128A (en) | Vehicle shift control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |