CN106641225A - Gear shift point calibration method, device and system of automatic transmission - Google Patents
Gear shift point calibration method, device and system of automatic transmission Download PDFInfo
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- CN106641225A CN106641225A CN201510713289.6A CN201510713289A CN106641225A CN 106641225 A CN106641225 A CN 106641225A CN 201510713289 A CN201510713289 A CN 201510713289A CN 106641225 A CN106641225 A CN 106641225A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000498 cooling water Substances 0.000 claims description 15
- 238000007710 freezing Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
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- 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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a gear shift point calibration method, device and system of an automatic transmission, and relates to the technical field of automatic gear shift control of automobiles. The problem that in case of low-temperature start of an engine, the riding comfort is poor due to poor quality of gear shift of an automatic transmission is solved. The gear shift point calibration method of the automatic transmission comprises the steps of obtaining the maximum rotation speed of the engine in case of low-temperature start of the engine, and determining the maximum input rotation speed of the automatic transmission according to the maximum rotation speed of the engine, specifically, the maximum input rotation speed of the automatic transmission is equal to the maximum rotation speed of the engine; working out the maximum output rotation speed of the automatic transmission when the automatic transmission is at the first gear according to the maximum input rotation speed of the automatic transmission; and calibrating the maximum output rotation speed of the automatic transmission as the rotation speed of the gear shift point, from the first gear to the second gear, of the automatic transmission at the zero throttle. The gear shift point calibration method of the automatic transmission is applicable to automatic transmissions.
Description
Technical field
The present invention relates to vehicle self shifter control technology field, more particularly to a kind of gearshift of automatic transmission
Point scaling method, apparatus and system.
Background technology
With the popularization of Automotives Equipped Automatic Transmissions, user the shift quality of Automotives Equipped Automatic Transmissions is required also with
Raising, and the quality of shift quality directly affects ride comfort.Shift quality refers to the flat of shift process
Pliable, i.e., speed change is steady in shift process, is not in too high instantaneous acceleration or instantaneous deceleration.
One of principal element of shift quality is affected to be that shifting points are demarcated, if unreasonable, the meeting shadow that shifting points are demarcated
The ride comfort of gearshift is rung, and then affects comfortableness by bus.
In existing Automotives Equipped Automatic Transmissions, what shifting points scaling method typically determined according to speed, it is different
The gear different vehicle speed ranges of correspondence, when current vehicle speed reaches the speed of correspondence gear, on gear is automatic
Rise or drop to the corresponding gear of current vehicle speed.However, present inventor find in R＆D process it is existing
Shifting points scaling method and imperfection in technology, for example, when engine cold-starting, engine low temperature
Rotating speed during startup is far above target idling, the gear of automatic transmission when causing idling after engine cold-starting
Position rises two and keeps off from a gear, if now trampling throttle, it may appear that too high instantaneous acceleration, causes speed to be dashed forward
So accelerate, cause shift quality poor, and then cause comfortableness by bus not good.
The content of the invention
In view of this, it is contemplated that proposing a kind of gearshift scaling method of automatic transmission, to solve to start
During machine cold-starting, because of the not good problem of the caused ride comfort of shift quality difference institute of automatic transmission.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of shifting points scaling method of automatic transmission, including：
The engine maximum (top) speed to be reached when obtaining engine cold-starting；
The maximum input speed of automatic transmission, the automatic change are determined according to the maximum (top) speed of the engine
The maximum input speed of fast device is equal with the maximum (top) speed of the engine；
According to the maximum input speed of the automatic transmission, calculate when automatic transmission is in a gear and become automatically
The maximum output rotating speed of fast device；
The maximum output rotating speed of the automatic transmission is demarcated as：Automatic transmission rises from a gear during zero throttle
The shifting points rotating speed of two gears.
Further, in the shifting points scaling method of above-mentioned automatic transmission, calculate described using equation below
When automatic transmission is in a gear, the maximum output rotating 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, when obtaining engine cold-starting
The step of engine maximum (top) speed to be reached, includes：
Measure engine and distinguish corresponding rotating speed n during cold-starting under different cooling water temperaturesf；
Contrast each rotating speed nf, all rotating speed nfMiddle nfThe maximum maximum (top) speed for the engine of value.
Further, in the shifting points scaling method of above-mentioned automatic transmission, the cooling water temperature scope
For：Subzero 30 degree to above freezing ten degree.
Relative to prior art, the shifting points scaling method of automatic transmission of the present invention has following excellent
Gesture：
The shifting points scaling method of automatic transmission disclosed in this invention is applied in engine cold-starting,
Automatic transmission one under zero throttle is kept off shifting points (liter catch point) speed setting for rising two gears under theory state
The maximum (top) speed that automatic transmission can be output in a gear；And in actual applications, automatic transmission is in
The reality output rotating speed of automatic transmission can not reach the maximum defeated of the automatic transmission under theory state during one gear
Go out rotating speed, thus in idling after engine cold-starting, automatic transmission will not trigger a gear and rise two gears,
Be not in that too high instantaneous acceleration, i.e. speed will not be accelerated suddenly so if now trampling throttle,
Shift quality is thereby may be ensured that, and then comfortableness by bus can be improved.
Another object of the present invention is to a kind of gearshift caliberating device of automatic transmission is provided, to solve to start
During machine cold-starting, because of the not good problem of the caused ride comfort of shift quality difference institute of automatic transmission.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of shifting points caliberating device of automatic transmission, including：
Acquiring unit, for obtaining the engine maximum (top) speed to be reached during engine cold-starting；
Computing unit, for determining that the maximum input of automatic transmission turns according to the maximum (top) speed of the engine
Speed, the maximum input speed of the automatic transmission is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, calculate when automatic transmission is in a gear and become automatically
The maximum output rotating speed of fast device；
Determining unit, for the maximum output rotating speed of the automatic transmission to be demarcated as：It is automatic during zero throttle
Speed changer rises the shifting points rotating speed of two gears from a gear.
Further, in the shifting points caliberating device of above-mentioned automatic transmission, the computing unit is using as follows
When the formula calculating automatic transmission is in a gear, the maximum output rotating 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 includes measurement
Unit and comparison unit, wherein,
The measuring unit is corresponded to respectively under different cooling water temperatures for measuring engine during cold-starting
Rotating speed nf；
The comparison unit is used to contrast each rotating speed nf, all rotating speed nfMiddle nfValue it is maximum for described
The maximum (top) speed of motivation.
Further, in the shifting points caliberating device of above-mentioned automatic transmission, the temperature of the cooling water is：
Subzero 30 degree to above freezing ten degree.
Relative to prior art, the shifting points caliberating device of automatic transmission of the present invention has following excellent
Gesture：The shifting points scaling method phase of the shifting points caliberating device of the automatic transmission and above-mentioned automatic transmission
For prior art has the advantage that identical, will not be described here.
Another object of the present invention is to a kind of gearshift calibration system of automatic transmission is provided, to solve to start
During machine cold-starting, because of the not good problem of the caused ride comfort of shift quality difference institute of automatic transmission.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of shifting points calibration system of automatic transmission, including：
Speed probe, turns for obtaining the engine maximum to be reached during engine cold-starting
Speed；
Processor, for determining the maximum input speed of automatic transmission according to the maximum (top) speed of the engine,
The maximum input speed of the automatic transmission is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, calculate when automatic transmission is in a gear and become automatically
The maximum output rotating speed of fast device；And
The maximum output rotating speed of the automatic transmission is demarcated as：Automatic transmission rises from a gear during zero throttle
The shifting points rotating speed of two gears.
Further, in the shifting points calibration system of above-mentioned automatic transmission, the processor is car running computer
Or automatic shift control unit.
Relative to prior art, the shifting points calibration system of automatic transmission of the present invention has following excellent
Gesture：The shifting points scaling method phase of the shifting points calibration system of the automatic transmission and above-mentioned automatic transmission
For prior art has the advantage that identical, will not be described here.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In accompanying drawing
In：
Fig. 1 is the flow chart of the shifting points scaling method of the automatic transmission described in the embodiment of the present invention.
Specific embodiment
It should be noted that the embodiment and the feature in embodiment in the case where not conflicting, in the present invention
Can be mutually combined.
In addition, the engine cold-starting being previously mentioned in an embodiment of the present invention, refers to cold in engine
But coolant-temperature gage scope is at subzero 30 degree to above freezing ten degree (- 30 °～10 °), after the engine long time shuts down
It is again started up referred to as engine cold-starting；Residing environment temperature before cooling water temperature and engine cold-starting
Degree is same or like.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Fig. 1 is referred to, the shifting points scaling method of automatic transmission provided in an embodiment of the present invention is including as follows
Step：
Step 101, the engine maximum (top) speed to be reached when obtaining engine cold-starting；
Step 102, determines the maximum input speed of automatic transmission, automatically according to the maximum (top) speed of engine
The maximum input speed of speed changer is equal with the maximum (top) speed of the engine；
Step 103, according to the maximum input speed of automatic transmission, when calculating automatic transmission is in a gear
The maximum output rotating speed of automatic transmission；
Step 104, the maximum output rotating speed of automatic transmission is demarcated as：During zero throttle automatic transmission from
One gear rises the shifting points rotating speed of two gears.
When being embodied as, in a step 101, generally measurement engine is low under different cooling water temperatures
Corresponding rotating speed n is distinguished during startup temperaturef, contrast each rotating speed nf, all rotating speed nfMiddle nfValue it is maximum to start
The maximum (top) speed n of machinemax.For example, -30 °, -20 °, -10 °, -5 °, 5 ° and 10 ° are respectively in cooling water temperature
During this six temperature spots, measurement engine distinguishes corresponding rotating speed n in this six temperature spot cold-startingsf,
And from this six rotating speed nfIn, select a nfThe maximum rotating speed of value, nfThe maximum rotating speed of value is engine
The maximum (top) speed n to be reachedmax。
It is noted that in same temperature spot, engine can be obtained with cold-starting engine repeatedly
Distinguish corresponding multiple n when the temperature spot multiple low-temperature startsfValue, then calculates multiple nfThe mean value of value,
For example, when cooling water temperature is -30 °, No. ten engines of measurement distinguish corresponding ten in -30 ° of lower cold-startings
Rotating speed nf, then calculate this ten rotating speed nfMean value, this mean value is：It is in cooling water temperature
When -30 °, corresponding rotating speed n during engine cold-startingf, engine can be so improved in different temperature points
Rotating speed n during cold-startingfData accuracy, such that it is able to improve the maximum (top) speed of acquired engine
nmaxAccuracy.
In a step 102, because the input shaft of automatic transmission passes through the output of fluid torque-converter and engine
Axle connects, if therefore assume that the state of fluid torque-converter is lockup state, the slippage of fluid torque-converter is
0rpm, now the rotating speed of engine be the rotating speed of the input shaft of automatic transmission, therefore, engine is most
Big rotating speed nmaxThe as maximum input speed n of automatic transmission1, i.e. n1=nmax。
In step 103, after the structure determination of automatic transmission, different gears are corresponding fast than (different
The gear ratio of the corresponding gear pair of gear) be also to determine, therefore, according to the maximum of automatic transmission
Input speed n1Can calculate automatic transmission and be in than r in the corresponding speed of a gear with automatic transmission
The maximum output rotating speed n of automatic transmission during one gear2.The maximum output rotating speed n of automatic transmission2It is concrete to calculate
Formula 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, if automatic transmission one kept off under zero throttle
Rise corresponding shifting points (liter catch point) rotating speed of two gears and be set to n2So that automatic transmission in zero throttle,
Only when the output shaft rotating speed of automatic transmission reaches n2The gear of Shi Caihui triggerings one rises two and keeps off.But practical application
In, fluid torque-converter can not possibly be in lockup state in a gear, therefore the slippage of fluid torque-converter is also
In 0rpm, therefore automatic transmission actually enters rotating speed n3Less than the rotating speed of engine, that is to say, that from
Dynamic speed changer actually enters rotating speed n3Less than the maximum input speed n of automatic transmission1；If n3<n1,
According to reality output rotating speed computing formula n of automatic transmission4=n3/ r, can calculate n4<n2, also
It is to say, when automatic transmission is in a gear, the reality output rotating speed n of automatic transmission4Turn less than shifting points
Fast n2.Therefore, after engine cold-starting during idling, if being now linked into D gears, releasing of brake does not step on oil
Door, due to the reality output rotating speed n of automatic transmission4Less than shifting points rotating speed n2, therefore automatic transmission
Gear will not the gear of a gear liter two.
In sum, using the shifting points scaling method of automatic transmission provided in an embodiment of the present invention, will be from
It is automatic under theory state that the next gear of the throttle of dynamic speed changer zero rises shifting points (liter catch point) speed setting of two gears
The maximum (top) speed that speed changer can be output in a gear；And in actual applications, automatic transmission is in a gear
When automatic transmission reality output rotating speed be the maximum output that can not reach the automatic transmission under theory state
Rotating speed, therefore, when engine cold-starting, the reality output rotating speed n of automatic transmission4It is less than automatically
The maximum output rotating speed n of speed changer2, that is to say, that the reality output rotating speed n of automatic transmission4Less than changing
Catch point rotating speed n2, therefore after engine cold-starting during idling, the gear of automatic transmission will not a gear liter two
Gear, is not in that too high instantaneous acceleration, i.e. speed will not add suddenly so if now trampling throttle
Hurry up, thereby may be ensured that shift quality, and then comfortableness by bus can be improved.
The embodiment of the present invention additionally provides a kind of shifting points caliberating device of automatic transmission, including：
Acquiring unit, for obtaining the maximum (top) speed to be reached of engine during engine cold-starting；
Computing unit, for determining the maximum input speed of automatic transmission according to the maximum (top) speed of engine,
The maximum input speed of automatic transmission is equal with the maximum (top) speed of engine；And
According to the maximum input speed of automatic transmission, automatic transmission when automatic transmission is in a gear is calculated
Maximum output rotating speed；
Determining unit, for the maximum output rotating speed of automatic transmission to be demarcated as：Fluid drive during zero throttle
Device rises the shifting points rotating speed of two gears from a gear.
In the shifting points caliberating device of the automatic transmission that the present embodiment is provided, during engine cold-starting
The shifting points scaling method of the automatic transmission that shifting points scaling method is provided using above-described embodiment：It is oily by zero
Shifting points (liter catch point) speed setting that the lower gear of automatic transmission one of door rises two gears is to become automatically under theory state
The maximum (top) speed that fast device can be output in a gear；And in actual applications, when automatic transmission is in a gear
The reality output rotating speed of automatic transmission can not reach the maximum output rotating speed of the automatic transmission under theory state,
Thus in idling after engine cold-starting, automatic transmission will not trigger a gear and rise two gears, so if
Throttle is now trampled, is not in that too high instantaneous acceleration, i.e. speed will not be accelerated suddenly, such that it is able to
Ensure shift quality, and then comfortableness by bus can be improved.
In the shifting points caliberating device of above-mentioned automatic transmission, computing unit calculates automatic using equation below
When speed changer is in a gear, the maximum output rotating 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 used
Distinguish corresponding rotating speed n when engine is measured in cold-starting under different cooling water temperaturesf；Contrast is single
Unit is used to contrast each rotating speed nf, all rotating speed nfMiddle nfThe maximum maximum (top) speed for the engine of value.
For example, -30 °, -20 °, -10 °, -5 °, 5 ° and 10 ° this six temperature spots are respectively in cooling water temperature
When, measuring unit can measure engine and distinguish corresponding rotating speed when this six temperature spots carry out cold-starting
nf, and from this six rotating speed nfIn, select a nfThe maximum rotating speed of value, nfThe maximum rotating speed of value is as sent out
The maximum (top) speed n that motivation to be reachedmax。
The embodiment of the present invention additionally provides a kind of shifting points calibration system of automatic transmission, including：
Speed probe, for obtaining the maximum (top) speed to be reached of engine during engine cold-starting；
Processor, for determining the maximum input speed of automatic transmission according to the maximum (top) speed of engine, from
The maximum input speed of dynamic speed changer is equal with the maximum (top) speed of engine；And
According to the maximum input speed of automatic transmission, automatic transmission when automatic transmission is in a gear is calculated
Maximum output rotating speed；And
The maximum output rotating speed of automatic transmission is demarcated as：Automatic transmission rises two and keeps off from a gear during zero throttle
Shifting points rotating speed.
The shifting points scaling method phase of the shifting points calibration system of the automatic transmission and above-mentioned automatic transmission
For prior art has the advantage that identical, will not be described here.
In the above-described embodiments, processor is specifically as follows car running computer or automatic shift control unit, driving
Computer or automatic shift control unit set-up mode in the car is in order to as it is known to those skilled in the art that event
Do not repeating herein.
You need to add is that, each embodiment in this specification is described by the way of progressive, each reality
Identical similar part is applied between example mutually referring to what each embodiment was stressed is and other realities
Apply the difference of example.For especially for device embodiment, because it is substantially similar to embodiment of the method,
So describing fairly simple, related part is illustrated referring to the part of embodiment of the method.
Presently preferred embodiments of the present invention is the foregoing is only, it is all at this not to limit the present invention
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in this
Within bright protection domain.
Claims (10)
1. the shifting points scaling method of a kind of automatic transmission, it is characterised in that include：
The engine maximum (top) speed to be reached when obtaining engine cold-starting；
The maximum input speed of automatic transmission, the automatic change are determined according to the maximum (top) speed of the engine
The maximum input speed of fast device is equal with the maximum (top) speed of the engine；
According to the maximum input speed of the automatic transmission, calculate when automatic transmission is in a gear and become automatically
The maximum output rotating speed of fast device；
The maximum output rotating speed of the automatic transmission is demarcated as：Automatic transmission rises from a gear during zero throttle
The shifting points rotating speed of two gears.
2. the shifting points scaling method of automatic transmission according to claim 1, it is characterised in that adopt
When being in a gear with the equation below calculating automatic transmission, the maximum output rotating 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.
3. the shifting points scaling method of automatic transmission according to claim 1, it is characterised in that obtain
Include the step of the engine maximum (top) speed to be reached when taking engine cold-starting：
Measure engine and distinguish corresponding rotating speed n during cold-starting under different cooling water temperaturesf；
Contrast each rotating speed nf, all rotating speed nfMiddle nfThe maximum maximum (top) speed for the engine of value.
4. the shifting points scaling method of automatic transmission according to claim 3, it is characterised in that institute
Stating cooling water temperature scope is：Subzero 30 degree to above freezing ten degree.
5. the shifting points caliberating device of a kind of automatic transmission, it is characterised in that include：
Acquiring unit, for obtaining the engine maximum (top) speed to be reached during engine cold-starting；
Computing unit, for determining that the maximum input of automatic transmission turns according to the maximum (top) speed of the engine
Speed, the maximum input speed of the automatic transmission is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, calculate when automatic transmission is in a gear and become automatically
The maximum output rotating speed of fast device；
Determining unit, for the maximum output rotating speed of the automatic transmission to be demarcated as：It is automatic during zero throttle
Speed changer rises the shifting points rotating speed of two gears from a gear.
6. the shifting points caliberating device of automatic transmission according to claim 5, it is characterised in that institute
State computing unit using equation below calculate the automatic transmission in a gear when, the maximum of automatic transmission
Output speed n2：
n2=n1/ r,
Wherein, n1For the maximum input speed of automatic transmission, r is the corresponding speed ratio of a gear.
7. the shifting points caliberating device of automatic transmission according to claim 5, it is characterised in that institute
Acquiring unit is stated including measuring unit and comparison unit, wherein,
The measuring unit is corresponded to respectively under different cooling water temperatures for measuring engine during cold-starting
Rotating speed nf；
The comparison unit is used to contrast each rotating speed nf, all rotating speed nfMiddle nfValue it is maximum for described
The maximum (top) speed of motivation.
8. the shifting points caliberating device of automatic transmission according to claim 7, it is characterised in that institute
The temperature for stating cooling water is：Subzero 30 degree to above freezing ten degree.
9. the shifting points calibration system of a kind of automatic transmission, it is characterised in that include：
Speed probe, turns for obtaining the engine maximum to be reached during engine cold-starting
Speed；
Processor, for determining the maximum input speed of automatic transmission according to the maximum (top) speed of the engine,
The maximum input speed of the automatic transmission is equal with the maximum (top) speed of the engine；And
According to the maximum input speed of the automatic transmission, calculate when automatic transmission is in a gear and become automatically
The maximum output rotating speed of fast device；And
The maximum output rotating speed of the automatic transmission is demarcated as：Automatic transmission rises from a gear during zero throttle
The shifting points rotating speed of two gears.
10. the shifting points calibration system of automatic transmission according to claim 9, it is characterised in that
The processor is car running computer or automatic shift control unit.
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| CN201510713289.6A CN106641225B (en) | 2015-10-28 | 2015-10-28 | Shifting points scaling method, the apparatus and system of automatic transmission |
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| CN201510713289.6A CN106641225B (en) | 2015-10-28 | 2015-10-28 | Shifting points scaling method, the apparatus and system of automatic transmission |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226085A (en) * | 2017-06-20 | 2017-10-03 | 上海汽车变速器有限公司 | The shift control method of wet dual clutch transmission hybrid vehicle |
| CN109711050A (en) * | 2018-12-26 | 2019-05-03 | 贵州凯星液力传动机械有限公司 | A kind of field calibration method of automatic transmission |
| CN109780192A (en) * | 2017-11-10 | 2019-05-21 | 厦门雅迅网络股份有限公司 | Method for solving, device, terminal and the storage medium of gearbox-gear transmission ratio |
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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 |
| US20120150401A1 (en) * | 2009-09-14 | 2012-06-14 | Fredrik Swartling | System for control of a gearbox |
| US20120330521A1 (en) * | 2010-03-08 | 2012-12-27 | Honda Motor Co., Ltd. | Control apparatus for automatic transmission |
| JP2011231839A (en) * | 2010-04-27 | 2011-11-17 | Bosch Corp | Automatic transmission shift control device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107226085A (en) * | 2017-06-20 | 2017-10-03 | 上海汽车变速器有限公司 | The shift control method of wet dual clutch transmission hybrid vehicle |
| 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 |
| CN109780192A (en) * | 2017-11-10 | 2019-05-21 | 厦门雅迅网络股份有限公司 | Method for solving, device, terminal and the storage medium of gearbox-gear transmission ratio |
| 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 |
| CN109711050A (en) * | 2018-12-26 | 2019-05-03 | 贵州凯星液力传动机械有限公司 | A kind of field calibration method of automatic transmission |
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