CN110005798A - Car gear shifting method and computer readable storage medium - Google Patents
Car gear shifting method and computer readable storage medium Download PDFInfo
- Publication number
- CN110005798A CN110005798A CN201810007016.3A CN201810007016A CN110005798A CN 110005798 A CN110005798 A CN 110005798A CN 201810007016 A CN201810007016 A CN 201810007016A CN 110005798 A CN110005798 A CN 110005798A
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- China
- Prior art keywords
- speed
- gear
- motor
- shifting method
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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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
- F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02091—Measures for reducing weight of gearbox
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of car gear shifting method and computer readable storage mediums.In car gear shifting method according to the present invention, in from current gear to the gearshift procedure of target gear, motor speed is actively adjusted to intermediate speed towards setting speed direction, so that reducing synchronizer institute must rotational speed difference between synchronization, motor speed and setting speed.Revolving speed cooperation synchronizer synchronous rotational speed is actively adjusted by motor, so that electronic gear shift process can be realized without the synchronization ring of larger synchronous capacity in gearbox, to mitigate gearbox weight, reduce gearbox cost, improve shift synchronizer service life, gearbox gear-shift energy loss is reduced, gearbox transmission efficiency is improved.
Description
Technical field
The present invention relates to automotive fields, in particular to the shifting method for hybrid vehicle or electric car
And execute the computer readable storage medium of the process for gear.
Background technique
Gearbox in gear shift by synchronous ring frictional engagement tooth come synchronized shifting before and after revolving speed, when use is in hybrid power
When on automobile or electric car, synchronizer needs synchronous motor revolving speed before and after electronic gear shift, and motor inertia is very big, so that synchronous
Ring needs biggish synchronous capacity, therefore gearbox weight promotes increased costs, and synchronous ring is in intensive work state
Working life can be reduced.So rotational speed difference can be cooperated using electric machine speed regulation and synchronizer synchronous rotational speed before and after electronic gear shift
It completes, it is poor that electric machine speed regulation synchronizes a part of gear shifting rotational speed, and the synchronous remainder gear shifting rotational speed of synchronizer is poor.
Summary of the invention
The present invention proposes a kind of car gear shifting method, can reduce synchronizer must be synchronous rotational speed difference, reduce speed change
Case cost improves gearbox life.
The car gear shifting method proposed on one side according to the present invention, from current gear to the gearshift procedure of target gear
In, actively adjust motor speed to intermediate speed towards setting speed direction so that reduce that synchronizer institute must be synchronous, motor turn
Rotational speed difference between speed and setting speed.
The computer readable storage medium proposed on one side according to the present invention, is stored thereon with computer program, the journey
The step of being realized according to the method for the present invention when sequence is executed by processor.
The beneficial effects of the present invention are: revolving speed cooperation synchronizer synchronous rotational speed is actively adjusted by motor, so that gearbox
Electronic gear shift process can be realized without the synchronization ring of larger synchronous capacity, to mitigate gearbox weight, reduce and become
Fast case cost improves shift synchronizer service life, reduces gearbox gear-shift energy loss, improves gearbox transmission efficiency.
Detailed description of the invention
It is explained with reference to the disclosure.It is to be appreciated that attached drawing is merely illustrative purpose, and not anticipate
It is construed as limiting to protection scope of the present invention.In figure:
Fig. 1 shows the flow chart of car gear shifting method according to one embodiment of the present invention.
Specific embodiment
The car gear shifting method proposed according to an embodiment of the present invention, in changing from current gear to target gear
During shelves, actively adjusts motor speed to intermediate speed towards setting speed direction so that reduce synchronizer palpus synchronization,
Rotational speed difference between motor speed and setting speed.Actively adjusted by motor revolving speed cooperation synchronizer synchronous rotational speed (such as by
Actively speed regulation undertakes most of rotational speed difference to motor, by the synchronous fraction rotational speed difference of synchronizer) so that gearbox is without larger
Electronic gear shift process can be realized in the synchronization ring of synchronous capacity, to mitigate gearbox weight, reduces gearbox cost, improves
Shift synchronizer service life, reduces gearbox gear-shift energy loss, improves gearbox transmission efficiency.
According to an embodiment of the present invention, the setting speed is counted according to the speed ratio and current vehicle speed of target gear
Electric machine theory revolving speed calculate, in current vehicle speed and target gear.
According to an embodiment of the present invention, when current gear is low-grade, if motor speed is higher than preset upshift and turns
Speed then shifts into top grade from low grade.
According to an embodiment of the present invention, when current gear is high-grade, if motor speed turns lower than preset downshift
Speed then shifts into low grade from top grade.
According to an embodiment of the present invention, it during shifting into top grade from low grade, after low grade plucks gear, actively drops
Low motor speed is to the first intermediate speed.
According to an embodiment of the present invention, it during shifting into low grade from top grade, after top grade plucks gear, actively mentions
Lifting motor revolving speed is to the second intermediate speed.
According to an embodiment of the present invention, during shifting into low grade from neutral gear, active accommodation motor speed is extremely
First intermediate speed.
According to an embodiment of the present invention, during shifting into top grade from neutral gear, active accommodation motor speed is extremely
Second intermediate speed.
According to an embodiment of the present invention, (such as synchronizer is synchronous for the synchronous range of speeds that allows of pre-determined synchronization device
Capacity), the intermediate speed is arranged according to the range of speeds.Revolving speed cooperation synchronizer synchronous rotational speed is actively adjusted by motor,
So that synchronizer synchronous rotational speed difference is set in any rotational speed difference met in synchronous capacity, moreover, synchronizer auxiliary governor is deposited
The caused gear shift problem when also can avoid motor actively speed regulation failure.
It can be applicable in biggish transmission torque range according to the method for the present invention, such as bored applied to list and synchronize ring or more
Bore synchronous ring situation.Certainly, in addition to " low grade ", " top grade " and " neutral gear ", speed changer can also have other gears.Herein
" low grade ", " top grade " and " neutral gear " being given for example only property are enumerated, rather than speed changer is limited to these three gears.
According to an embodiment of the present invention, car gear shifting method process is as follows: signals of vehicles acquisition；Automobile gear level and liter
Downshift judgement；If vehicle needs to go up and down shelves, motor speed is adjusted to intermediate speed, reduces rotational speed difference before and after gear shift；Confirmation
After motor speed reaches intermediate speed, carry out hanging shelves operation, synchronizer synchronizes remaining rotational speed difference；Gear shift success, continues collecting vehicle
Signal.
It is illustrated using the illustrative process for carrying out gear shift to automobile according to the method for the present invention by means of Fig. 1, wherein
Sequence between step is not limited to the sequence of digital number:
Step 1, signals of vehicles acquires: when automobile uses motor driven, acquiring speed, motor speed, current gear；
Step 2, current gear neutral gear judges: judging whether current gear is neutral gear, 3 is entered step when if being neutral gear, judgement
Whether need to hang shelves when neutral gear；4 are entered step when if not being neutral gear, judges current gear for high-grade (H grades) or low grade (L
Shelves)；
Step 3, target gear judges: judging target gear, determines whether need to hang shelves when current gear is neutral gear, need to be linked into
At H grades, then 7 are entered step, implementation is linked into H grades of operations (manually or automatically carrying out)；When needing to be linked into L grades, then 8 are entered step,
Implementation is linked into L grades of operations (manually or automatically carrying out)；When not needing to hang shelves, then 1 is entered step, continues signals of vehicles and adopts
Collection；
Step 4, current gear L/H grades of judgements: judging whether current gear is L grades, if be L grades, enters step 5, judgement
Currently whether need to upshift；If be H grades, 6 are entered step, whether judgement currently needs to downshift；
Step 5, upshift judges: when current gear is L grades, judging whether current motor revolving speed is higher than upshift revolving speed.If current
Motor speed is higher than upshift revolving speed Nup, then needs to upshift, and enters step 7, implements upshift and is linked into H grades of operations；If current motor
Revolving speed then enters step 1 not higher than upshift revolving speed Nup, continues signals of vehicles acquisition；
Step 6, downshift judges: when current gear is H grades, judging whether current motor revolving speed is lower than downshift revolving speed.If current
Motor speed then needs to downshift lower than downshift revolving speed Ndown, enters step 8, implements downshift and is linked into L grades of operations；If current electricity
Machine revolving speed then enters step 1 not less than downshift revolving speed Ndown, continues signals of vehicles acquisition；
Step 7, upshift is linked into H grades of operations: L grades of excision gears, and motor speed drops to N1(such as 3000rpm after upshift), it rises
Shelves front and back rotational speed difference is then Nup-N1(such as 6000rpm-3000rpm), motor speed is actively reduced to the first intermediate speed N2
(such as 4000rpm), then it is Nup-N2(such as 6000rpm-4000rpm that motor, which actively adjusts rotational speed difference), synchronizer is synchronous to be turned
Speed difference is N2-N1(such as 4000rpm-3000rpm), H grades are linked at this time；
Step 8, downshift is linked into L grades of operations: H grades of excision gears, and motor speed rises to N3 after downshift, and downshift front and back rotational speed difference is then
For N3-Ndown, motor speed is actively promoted to the second intermediate speed N4, then it is N4-Ndown that motor, which actively adjusts rotational speed difference, together
Step device synchronous rotational speed difference is N3-N4, is at this time linked into L grades.
Step 9, gear shift is completed: being entered step 1, is continued signals of vehicles acquisition.
The invention also includes a kind of computer readable storage mediums, are stored thereon with computer program, and the program is processed
The step of device realizes method described in any one or more embodiment above-mentioned when executing, the technical characteristic therefore having
And the technical effect having corresponds to the description of front, therefore details are not described herein.
Technical scope of the invention is not limited solely to the content in above description, and those skilled in the art can not take off
Under the premise of from technical thought of the invention, many variations and modifications are carried out to above-described embodiment, and these deformations and modification should all
In belonging to the scope of protection of the present invention.
Claims (10)
1. a kind of car gear shifting method, which is characterized in that in from current gear to the gearshift procedure of target gear, towards setting
Rotary speed direction actively adjusts motor speed to intermediate speed so that reduce that synchronizer institute must be synchronous, motor speed and setting turn
Rotational speed difference between speed.
2. car gear shifting method according to claim 1, which is characterized in that the setting speed is according to target gear
Speed ratio and current vehicle speed electric machine theory revolving speed calculated, in current vehicle speed and target gear.
3. car gear shifting method according to claim 1, which is characterized in that when current gear is low-grade, if motor turns
Speed is higher than preset upshift revolving speed, then shifts into top grade from low grade.
4. car gear shifting method according to claim 1, which is characterized in that when current gear is high-grade, if motor turns
Speed is lower than preset downshift revolving speed, then shifts into low grade from top grade.
5. car gear shifting method according to claim 1, which is characterized in that during shifting into top grade from low grade,
After low grade plucks gear, motor speed is actively reduced to the first intermediate speed.
6. car gear shifting method according to claim 1, which is characterized in that during shifting into low grade from top grade,
After top grade plucks gear, motor speed is actively promoted to the second intermediate speed.
7. car gear shifting method according to claim 1, which is characterized in that during shifting into low grade from neutral gear,
Active accommodation motor speed is to the first intermediate speed.
8. car gear shifting method according to claim 1, which is characterized in that during shifting into top grade from neutral gear,
Active accommodation motor speed is to the second intermediate speed.
9. car gear shifting method according to claim 1, which is characterized in that pre-determined synchronization device allows synchronous revolving speed model
It encloses, the intermediate speed is arranged according to the range of speeds.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The step of any one of claims 1 to 9 the method is realized when execution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007016.3A CN110005798A (en) | 2018-01-04 | 2018-01-04 | Car gear shifting method and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007016.3A CN110005798A (en) | 2018-01-04 | 2018-01-04 | Car gear shifting method and computer readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005798A true CN110005798A (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810007016.3A Pending CN110005798A (en) | 2018-01-04 | 2018-01-04 | Car gear shifting method and computer readable storage medium |
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| CN (1) | CN110005798A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050070748A (en) * | 2003-12-30 | 2005-07-07 | 현대자동차주식회사 | Shift device of transmission |
| US20150330500A1 (en) * | 2014-05-15 | 2015-11-19 | Cummins, Inc. | Powertrain optimization |
| CN105946848A (en) * | 2016-06-13 | 2016-09-21 | 北京理工大学 | Motor torque coordination control method applied to gear entering process |
| CN106926747A (en) * | 2017-02-15 | 2017-07-07 | 同济大学 | Pure electric automobile shifting control system based on no-clutch two-shift automatic speed variator |
| CN107061709A (en) * | 2017-01-16 | 2017-08-18 | 深圳前海翔宇投资管理有限公司 | Automatic shifting controller and method |
-
2018
- 2018-01-04 CN CN201810007016.3A patent/CN110005798A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050070748A (en) * | 2003-12-30 | 2005-07-07 | 현대자동차주식회사 | Shift device of transmission |
| US20150330500A1 (en) * | 2014-05-15 | 2015-11-19 | Cummins, Inc. | Powertrain optimization |
| CN105946848A (en) * | 2016-06-13 | 2016-09-21 | 北京理工大学 | Motor torque coordination control method applied to gear entering process |
| CN107061709A (en) * | 2017-01-16 | 2017-08-18 | 深圳前海翔宇投资管理有限公司 | Automatic shifting controller and method |
| CN106926747A (en) * | 2017-02-15 | 2017-07-07 | 同济大学 | Pure electric automobile shifting control system based on no-clutch two-shift automatic speed variator |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190712 |
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| RJ01 | Rejection of invention patent application after publication |