CN106641225B - Shifting points scaling method, the apparatus and system of automatic transmission - Google Patents
Shifting points scaling method, the apparatus and system of automatic transmission Download PDFInfo
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- CN106641225B CN106641225B CN201510713289.6A CN201510713289A CN106641225B CN 106641225 B CN106641225 B CN 106641225B CN 201510713289 A CN201510713289 A CN 201510713289A CN 106641225 B CN106641225 B CN 106641225B
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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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
- F16H61/02—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
Abstract
The present invention provides shifting points scaling method, the apparatus and systems of a kind of automatic transmission, are related to vehicle self shifter control technology field, because the ride comfort caused by the shift quality of automatic transmission is poor is bad when solving the problems, such as engine cold-starting.The shifting points scaling method of the automatic transmission includes: the maximum (top) speed that engine can reach when obtaining engine cold-starting；Determine that the maximum input speed of automatic transmission, the maximum input speed of automatic transmission are equal with the maximum (top) speed of engine according to the maximum (top) speed of engine；According to the maximum input speed of automatic transmission, the maximum output revolving speed of automatic transmission when automatic transmission is in a gear is calculated；The maximum output revolving speed of automatic transmission is demarcated are as follows: automatic transmission rises the shifting points revolving speed of second gear from a gear when zero throttle.The shifting points scaling method of the automatic transmission is applied in automatic transmission.
Description
Technical field
The present invention relates to vehicle self shifter control technology field, in particular to the shifting points of a kind of automatic transmission are demarcated
Method, apparatus and system.
Background technique
With popularizing for Automotives Equipped Automatic Transmissions, user requires also to mention therewith to the shift quality of Automotives Equipped Automatic Transmissions
Height, and the quality of shift quality directly affects ride comfort.Shift quality refers to the ride comfort of shift process, i.e. shift process
Middle speed variation is steady, is not in excessively high instantaneous acceleration or instantaneous deceleration.Influence shift quality principal element it
First is that shifting points are demarcated, if shifting points calibration is unreasonable, the ride comfort of shift will affect, and then influence by bus comfortable
Property.
In existing Automotives Equipped Automatic Transmissions, shifting points scaling method is usually to be determined according to speed, different gears
Corresponding different vehicle speed range, when current vehicle speed reaches the speed of corresponding gear, gear is raised or lowered to automatically works as front truck
The corresponding gear of speed.However, present inventor has found shifting points scaling method in the prior art not in R&D process
Perfect, for example, when engine cold-starting, revolving speed when engine cold-starting is much higher than target idling, leads to engine
The gear of automatic transmission rises second gear from a gear when idling after cold-starting, if trampling throttle at this time, it may appear that excessively high wink
Brief acceleration causes speed to be accelerated suddenly, causes shift quality poor, and then causes comfort by bus bad.
Summary of the invention
In view of this, the present invention is directed to propose a kind of shift scaling method of automatic transmission, to solve engine low temperature
When starting, because automatic transmission shift quality difference caused by the bad problem of ride comfort.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of shifting points scaling method of automatic transmission, comprising:
The maximum (top) speed that the engine can reach when obtaining engine cold-starting；
The maximum input speed of automatic transmission is determined according to the maximum (top) speed of the engine, the automatic transmission
Maximum input speed is equal with the maximum (top) speed of the engine；
According to the maximum input speed of the automatic transmission, automatic transmission when automatic transmission is in a gear is calculated
Maximum output revolving speed；
The maximum output revolving speed of the automatic transmission is demarcated are as follows: automatic transmission rises second gear from a gear when zero throttle
Shifting points revolving speed.
Further, in the shifting points scaling method of above-mentioned automatic transmission, the automatic change is calculated using following formula
When fast device is in a gear, the maximum output revolving speed n of automatic transmission2:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
Further, in the shifting points scaling method of above-mentioned automatic transmission, hair when engine cold-starting is obtained
The step of maximum (top) speed that motivation can reach includes:
Measure engine corresponding revolving speed n when cold-starting under different cooling water temperaturesf；
Compare each revolving speed nf, all revolving speed nfMiddle nfIt is worth the maximum maximum (top) speed for the engine.
Further, in the shifting points scaling method of above-mentioned automatic transmission, the cooling water temperature range are as follows: subzero
30 degree to above freezing ten degree.
Compared with the existing technology, the shifting points scaling method of automatic transmission of the present invention has the advantage that
The shifting points scaling method of automatic transmission disclosed in this invention is to apply in engine cold-starting, by zero
Shifting points (upshift point) revolving speed that the gear of automatic transmission one rises second gear under throttle is set as automatic transmission under theory state and is in
The maximum (top) speed that one gear can be output；And in practical applications, the reality of automatic transmission is defeated when automatic transmission is in a gear
Revolving speed cannot reach the maximum output revolving speed of the automatic transmission under theory state, thus the idling after engine cold-starting out
When, it is not in excessively high instantaneous acceleration that automatic transmission, which will not trigger a gear and rise second gear so if trampling throttle at this time,
Degree, i.e., speed will not be accelerated suddenly, thereby may be ensured that shift quality, and then can be improved comfort by bus.
Another object of the present invention is to provide a kind of shift caliberating devices of automatic transmission, to solve engine low temperature
When starting, because automatic transmission shift quality difference caused by the bad problem of ride comfort.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of shifting points caliberating device of automatic transmission, comprising:
Acquiring unit, the maximum (top) speed that the engine can reach when for obtaining engine cold-starting；
Computing unit, for determining the maximum input speed of automatic transmission, institute according to the maximum (top) speed of the engine
The maximum input speed for stating automatic transmission is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, automatic transmission when automatic transmission is in a gear is calculated
Maximum output revolving speed；
Determination unit, for demarcating the maximum output revolving speed of the automatic transmission are as follows: automatic transmission when zero throttle
The shifting points revolving speed of second gear is risen from a gear.
Further, in the shifting points caliberating device of above-mentioned automatic transmission, the computing unit uses following formula meter
When calculating the automatic transmission in a gear, the maximum output revolving speed n of automatic transmission2:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
Further, in the shifting points caliberating device of above-mentioned automatic transmission, the acquiring unit include measuring unit and
Comparison unit, wherein
The measuring unit is used to measure engine under different cooling water temperatures corresponding turn when cold-starting
Fast nf；
The comparison unit is for comparing each revolving speed nf, all revolving speed nfMiddle nfBeing worth maximum is the engine
Maximum (top) speed.
Further, in the shifting points caliberating device of above-mentioned automatic transmission, the temperature of the cooling water are as follows: subzero 30
Degree is to above freezing ten degree.
Compared with the existing technology, the shifting points caliberating device of automatic transmission of the present invention has the advantage that institute
The shifting points caliberating device of stating automatic transmission and the shifting points scaling method of above-mentioned automatic transmission institute compared with the existing technology
Have the advantage that identical, details are not described herein.
Another object of the present invention is to provide a kind of shift calibration systems of automatic transmission, to solve engine low temperature
When starting, because automatic transmission shift quality difference caused by the bad problem of ride comfort.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of shifting points calibration system of automatic transmission, comprising:
Speed probe, the maximum (top) speed that the engine can reach when for obtaining engine cold-starting；
Processor, it is described for determining the maximum input speed of automatic transmission according to the maximum (top) speed of the engine
The maximum input speed of automatic transmission is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, automatic transmission when automatic transmission is in a gear is calculated
Maximum output revolving speed；And
The maximum output revolving speed of the automatic transmission is demarcated are as follows: automatic transmission rises second gear from a gear when zero throttle
Shifting points revolving speed.
Further, in the shifting points calibration system of above-mentioned automatic transmission, the processor is for car running computer or automatically
Shift control unit.
Compared with the existing technology, the shifting points calibration system of automatic transmission of the present invention has the advantage that institute
The shifting points calibration system of stating automatic transmission and the shifting points scaling method of above-mentioned automatic transmission institute compared with the existing technology
Have the advantage that identical, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the shifting points scaling method of automatic transmission described in the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, the engine cold-starting being previously mentioned in an embodiment of the present invention, refers to the coolant water temperature in engine
Range is spent at subzero 30 degree to above freezing ten degree (- 30 °~10 °), and engine is again started up after shutting down for a long time to be known as starting
Machine cold-starting；Cooling water temperature is same or similar with environment temperature locating before engine cold-starting.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, the shifting points scaling method of automatic transmission provided in an embodiment of the present invention includes the following steps:
Step 101, the maximum (top) speed that engine can reach when obtaining engine cold-starting；
Step 102, the maximum input speed of automatic transmission is determined according to the maximum (top) speed of engine, automatic transmission
Maximum input speed is equal with the maximum (top) speed of the engine；
Step 103, according to the maximum input speed of automatic transmission, fluid drive when automatic transmission is in a gear is calculated
The maximum output revolving speed of device；
Step 104, the maximum output revolving speed of automatic transmission is demarcated are as follows: automatic transmission rises two from a gear when zero throttle
The shifting points revolving speed of gear.
When it is implemented, in a step 101, when usually measurement engine is in cold-starting under different cooling water temperatures
Corresponding revolving speed nf, compare each revolving speed nf, all revolving speed nfMiddle nfIt is worth the maximum maximum (top) speed n for enginemax.Example
Such as, when cooling water temperature is respectively -30 °, -20 °, -10 °, -5 °, 5 ° and 10 ° this six temperature spots, engine is measured at this
Corresponding revolving speed n when six temperature spot cold-startingsf, and from this six revolving speed nfIn, select a nfIt is worth maximum turn
Speed, nfBeing worth maximum revolving speed is the maximum (top) speed n that engine can reachmax。
It is noted that in the same temperature spot, it can be multiple with cold-starting engine, engine is obtained in the temperature
Corresponding multiple n when point multiple low-temperature startingfValue, then calculates multiple nfThe average value of value, for example, cooling water temperature be-
At 30 °, No. ten engines are measured in corresponding ten revolving speed n of -30 ° of lower cold-startingsf, then calculate this ten revolving speed nf
Average value, this average value is are as follows: when cooling water temperature is -30 °, when engine cold-starting corresponding revolving speed nf, such as
Revolving speed n of the engine in different temperature points cold-starting can be improved in thisfData accuracy, it is acquired so as to improve
Engine maximum (top) speed nmaxAccuracy.
In a step 102, since the input shaft of automatic transmission passes through the output axis connection of fluid torque-converter and engine,
If therefore assuming, the state of fluid torque-converter is lockup state, and the slippage of fluid torque-converter is 0rpm, at this time turn of engine
Speed is the revolving speed of the input shaft of automatic transmission, therefore, the maximum (top) speed n of enginemaxThe maximum of as automatic transmission is defeated
Enter revolving speed n1, i.e. n1=nmax。
In step 103, after the structure determination of automatic transmission, (different gears are corresponding for the corresponding speed ratio of different gears
Gear pair gear ratio) be also it is determining, therefore, according to the maximum input speed n of automatic transmission1And fluid drive
Device is in the corresponding speed ratio r of a gear, can calculate the maximum output revolving speed of automatic transmission when automatic transmission is in a gear
n2.The maximum output revolving speed n of automatic transmission2Specific formula for calculation is as follows:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
At step 104, according to the description of step 103, second gear pair is risen if kept off automatic transmission one under zero throttle
Shifting points (upshift point) revolving speed answered is set as n2, it is only defeated when automatic transmission so that automatic transmission is in zero throttle
Shaft revolving speed reaches n2One gear of Shi Caihui triggering rises second gear.But in practical application, fluid torque-converter can not be located in a gear
In the slippage of lockup state, therefore fluid torque-converter also it is not equal to 0rpm, therefore automatic transmission actually enters revolving speed n3It is small
In the revolving speed of engine, that is to say, that automatic transmission actually enters revolving speed n3Maximum input less than automatic transmission turns
Fast n1；If n3<n1, according to the reality output revolving speed calculation formula n of automatic transmission4=n3N can be calculated in/r4<n2,
That is, when automatic transmission is in a gear, the reality output revolving speed n of automatic transmission4Less than shifting points revolving speed n2.Cause
This, after engine cold-starting when idling, if being linked into D gear at this time, releasing of brake is not stepped on the gas, due to the reality of automatic transmission
Border exports revolving speed n4Less than shifting points revolving speed n2, therefore the gear of automatic transmission will not a gear liter second gear.
In conclusion using the shifting points scaling method of automatic transmission provided in an embodiment of the present invention, by fluid drive
Shifting points (upshift point) revolving speed that a gear rises second gear under zero throttle of device is set as automatic transmission under theory state and is in a gear institute
The maximum (top) speed that can be exported；And in practical applications, the reality output revolving speed of automatic transmission when automatic transmission is in a gear
It is the maximum output revolving speed that cannot reach the automatic transmission under theory state, it is therefore, automatic to become when engine cold-starting
The reality output revolving speed n of fast device4It is less than the maximum output revolving speed n of automatic transmission2, that is to say, that the reality of automatic transmission
Border exports revolving speed n4Less than shifting points revolving speed n2, therefore after engine cold-starting when idling, the gear of automatic transmission will not one
It is not in excessively high instantaneous acceleration that gear, which rises second gear so if trampling throttle at this time, i.e. speed will not be accelerated suddenly, from
And it can guarantee shift quality, and then can be improved comfort by bus.
The embodiment of the invention also provides a kind of shifting points caliberating devices of automatic transmission, comprising:
Acquiring unit, the maximum (top) speed that engine can reach when for obtaining engine cold-starting；
Computing unit determines the maximum input speed of automatic transmission for the maximum (top) speed according to engine, automatic to become
The maximum input speed of fast device is equal with the maximum (top) speed of engine；And
According to the maximum input speed of automatic transmission, the maximum of automatic transmission when automatic transmission is in a gear is calculated
Export revolving speed；
Determination unit, for demarcating the maximum output revolving speed of automatic transmission are as follows: automatic transmission is from one when zero throttle
Gear rises the shifting points revolving speed of second gear.
Shifting points in the shifting points caliberating device of automatic transmission provided in this embodiment, when engine cold-starting
Scaling method uses the shifting points scaling method of automatic transmission provided by the above embodiment: by automatic transmission one under zero throttle
Shifting points (upshift point) revolving speed that gear rises second gear is set as automatic transmission under theory state and is in the maximum that a gear can be output
Revolving speed；And in practical applications, the reality output revolving speed of automatic transmission cannot reach theoretical when automatic transmission is in a gear
The maximum output revolving speed of automatic transmission under state, thus after engine cold-starting when idling, automatic transmission will not
It is not in excessively high instantaneous acceleration that one gear of triggering, which rises second gear so if trampling throttle at this time, i.e., speed will not add suddenly
Fastly, it thereby may be ensured that shift quality, and then can be improved comfort by bus.
In the shifting points caliberating device of above-mentioned automatic transmission, computing unit calculates automatic transmission using following formula
When in a gear, the maximum output revolving speed n of automatic transmission2:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
In the above-described embodiments, acquiring unit includes measuring unit and comparison unit, wherein measuring unit is for measuring hair
Motivation is in corresponding revolving speed n when cold-starting under different cooling water temperaturesf；Comparison unit is for comparing each described turn
Fast nf, all revolving speed nfMiddle nfIt is worth the maximum maximum (top) speed for the engine.For example, be respectively in cooling water temperature-
When 30 °, -20 °, -10 °, -5 °, 5 ° and 10 ° this six temperature spots, measuring unit can measure engine in this six temperature spots
Carry out corresponding revolving speed n when cold-startingf, and from this six revolving speed nfIn, select a nfIt is worth maximum revolving speed, nfValue
Maximum revolving speed is the maximum (top) speed n that engine can reachmax。
The embodiment of the invention also provides a kind of shifting points calibration systems of automatic transmission, comprising:
Speed probe, the maximum (top) speed that engine can reach when for obtaining engine cold-starting；
Processor determines the maximum input speed of automatic transmission, fluid drive for the maximum (top) speed according to engine
The maximum input speed of device is equal with the maximum (top) speed of engine；And
According to the maximum input speed of automatic transmission, the maximum of automatic transmission when automatic transmission is in a gear is calculated
Export revolving speed；And
The maximum output revolving speed of automatic transmission is demarcated are as follows: automatic transmission rises the shift of second gear from a gear when zero throttle
Point revolving speed.
The shifting points calibration system of the automatic transmission and the shifting points scaling method of above-mentioned automatic transmission relative to
Advantage possessed by the prior art is identical, and details are not described herein.
In the above-described embodiments, processor is specifically as follows car running computer or automatic shift control unit, car running computer or
The set-up mode of automatic shift control unit in the car herein in order to as it is known to those skilled in the art that therefore do not repeating.
You need to add is that all the embodiments in this specification are described in a progressive manner, each embodiment it
Between same and similar part may refer to each other, each embodiment focuses on the differences from other embodiments.
For Installation practice, since it is substantially similar to the method embodiment, so describe fairly simple, correlation
Place illustrates referring to the part of embodiment of the method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of shifting points scaling method of automatic transmission characterized by comprising
The maximum (top) speed that the engine can reach when obtaining engine cold-starting；
The maximum input speed of automatic transmission, the maximum of the automatic transmission are determined according to the maximum (top) speed of the engine
Input speed is equal with the maximum (top) speed of the engine；
According to the maximum input speed of the automatic transmission, the maximum of automatic transmission when automatic transmission is in a gear is calculated
Export revolving speed；
The maximum output revolving speed of the automatic transmission is demarcated are as follows: automatic transmission rises the shift of second gear from a gear when zero throttle
Point revolving speed；
Wherein,
When calculating the automatic transmission in a gear using following formula, the maximum output revolving speed n of automatic transmission2:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
2. the shifting points scaling method of automatic transmission according to claim 1, which is characterized in that obtain engine low temperature
The step of maximum (top) speed that the engine can reach when starting includes:
Measure engine corresponding revolving speed n when cold-starting under different cooling water temperaturesf；
Compare each revolving speed nf, all revolving speed nfMiddle nfIt is worth the maximum maximum (top) speed for the engine.
3. the shifting points scaling method of automatic transmission according to claim 2, which is characterized in that the cooling water temperature
Range are as follows: subzero 30 degree to above freezing ten degree.
4. a kind of shifting points caliberating device of automatic transmission characterized by comprising
Acquiring unit, the maximum (top) speed that the engine can reach when for obtaining engine cold-starting；
Computing unit, for determining the maximum input speed of automatic transmission according to the maximum (top) speed of the engine, it is described from
The maximum input speed of dynamic speed changer is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, the maximum of automatic transmission when automatic transmission is in a gear is calculated
Export revolving speed；
Determination unit, for demarcating the maximum output revolving speed of the automatic transmission are as follows: automatic transmission is from one when zero throttle
Gear rises the shifting points revolving speed of second gear；
Wherein,
When the computing unit calculates the automatic transmission in a gear using following formula, the maximum output of automatic transmission
Revolving speed n2:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
5. the shifting points caliberating device of automatic transmission according to claim 4, which is characterized in that the acquiring unit packet
Include measuring unit and comparison unit, wherein
The measuring unit is for measuring engine corresponding revolving speed n when cold-starting under different cooling water temperaturesf；
The comparison unit is for comparing each revolving speed nf, all revolving speed nfMiddle nfIt is worth the maximum maximum for the engine
Revolving speed.
6. the shifting points caliberating device of automatic transmission according to claim 5, which is characterized in that the temperature of the cooling water
Degree are as follows: subzero 30 degree to above freezing ten degree.
7. a kind of shifting points calibration system of automatic transmission characterized by comprising
Speed probe, the maximum (top) speed that the engine can reach when for obtaining engine cold-starting；
Processor, it is described automatic for determining the maximum input speed of automatic transmission according to the maximum (top) speed of the engine
The maximum input speed of speed changer is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, the maximum of automatic transmission when automatic transmission is in a gear is calculated
Export revolving speed；And
The maximum output revolving speed of the automatic transmission is demarcated are as follows: automatic transmission rises the shift of second gear from a gear when zero throttle
Point revolving speed；
Wherein,
When the processor calculates the automatic transmission in a gear using following formula, the maximum output of automatic transmission turns
Fast n2:
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
8. the shifting points calibration system of automatic transmission according to claim 7, which is characterized in that the processor is row
Vehicle computer or automatic shift control unit.
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| CN107226085B (en) * | 2017-06-20 | 2019-05-28 | 上海汽车变速器有限公司 | The shift control method of wet dual clutch transmission hybrid vehicle |
| CN109780192B (en) * | 2017-11-10 | 2021-08-27 | 厦门雅迅网络股份有限公司 | Solving method and device for gear transmission ratio of gearbox, terminal and storage medium |
| CN109711050B (en) * | 2018-12-26 | 2023-06-20 | 贵州凯星液力传动机械有限公司 | Site calibration method of automatic hydraulic transmission |
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| CN102483147A (en) * | 2009-09-14 | 2012-05-30 | 斯堪尼亚商用车有限公司 | System for control of a gearbox |
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| SE534155C2 (en) * | 2009-09-14 | 2011-05-17 | Scania Cv Ab | System and method for controlling a gearbox |
| CN102792068B (en) * | 2010-03-08 | 2015-03-11 | 本田技研工业株式会社 | Automatic transmission control device |
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| JP2010286096A (en) * | 2009-06-15 | 2010-12-24 | Aisin Aw Co Ltd | Control device for automatic transmission |
| CN102483147A (en) * | 2009-09-14 | 2012-05-30 | 斯堪尼亚商用车有限公司 | System for control of a gearbox |
| JP2011231839A (en) * | 2010-04-27 | 2011-11-17 | Bosch Corp | Automatic transmission shift control device |
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