CN105757142B - The control method and device that a kind of clutch for vehicle automatic speed variator engages - Google Patents
The control method and device that a kind of clutch for vehicle automatic speed variator engages Download PDFInfo
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- CN105757142B CN105757142B CN201610223685.5A CN201610223685A CN105757142B CN 105757142 B CN105757142 B CN 105757142B CN 201610223685 A CN201610223685 A CN 201610223685A CN 105757142 B CN105757142 B CN 105757142B
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- clutch
- rotating speed
- engine
- speed
- drop
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/10—Preventing unintentional or unsafe engagement
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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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- 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
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
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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
- F16H2306/00—Shifting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses the control method and device that a kind of clutch for vehicle automatic speed variator engages.The control method includes drop rotating speed step and clutch engagement step.It is described drop rotating speed step be：Before clutch starts to transmit moment of torsion, whether the rotating speed for judging engine by engine electronic control unit is being suitable in the range of the safe speed of rotation of clutch engagement, and, in the case where the rotating speed of the engine is higher than the safe speed of rotation scope, drop rotational speed operation is actively taken by the engine electronic control unit, the rotating speed of the engine is reduced in the range of the safe speed of rotation；The clutch engagement step is：The clutch is controlled to engage by transmission control unit.It is too high this design prevents engine speed during clutch engagement and cause hardware damage, reduce dependence of the control system to CAN communication, so as to reduce fault rate.
Description
The application is the applying date for August in 2013 26 days, Application No. 201310375371.3, entitled " one kind is used for car
The divisional application of the application for a patent for invention of the control method and device of the clutch engagement of automatic transmission ".
Technical field
The present invention relates to clutch control field, the control of especially a kind of clutch engagement for vehicle automatic speed variator
Method and device processed.
Background technology
When the less driver of driving experience drives the vehicle using automatic transmission, a kind of relatively conventional mistake behaviour
As：The bend the throttle when neutral gear (N shelves) slides, then directly reverse traveling shelves (such as D shelves).This faulty operation is easy
Cause to cause clutch engagement in the case where engine speed is higher, so as to cause vehicle hardware to damage.
To avoid hardware damage caused by this faulty operation, in the prior art, a kind of solution method is：In clutch
Engagement before from TCU to ECU send one drop rotating speed request, ECU in response to the drop rotating speed ask reduce the rotating speed of engine and
Moment of torsion, until engine speed reaches the safety value of a suitable clutch engagement；Start if the tach signal of TCU collections is shown
Machine rotating speed meets the requirement that clutch is re-engaged, then TCU controls clutch to be re-engaged, and otherwise TCU can be waited, until starting
Machine rotating speed meets the requirement of clutch engagement, and then TCU just controls clutch to be engaged.But such method exists certain
Drawback：
If the communication the 1, between ECU and TCU is interrupted due to failure, the method will be no longer valid；
2nd, due to the execution of this method so that vehicle can not carry out ejection starting (be similar in manual vehicle that
Sample, during the in situ neutral gear of driver after violent stepping on accelerator pedal, hang drive shift and start to walk rapidly)；
If the 3rd, vehicle be in neutral gear time it is shorter, gear return to traveling shelves before, engine speed is still higher, from
Clutch needs to wait for engine speed and dropped to below safety value, can just recombine.This can cause the clutch long period can not
With reference to vehicle is in N shelves, without power, influences driving experience.
The content of the invention
Object of the present invention is to provide the controlling party that a kind of new clutch for vehicle automatic speed variator engages
Method and device, to overcome or solve at least in part at least one defect of the prior art.
In order to reach this purpose, the invention provides the controlling party that a kind of clutch for vehicle automatic speed variator engages
Method, including:
Rotating speed step drops：Before clutch starts to transmit moment of torsion, engine is judged by engine electronic control unit
Whether rotating speed is being suitable in the range of the safe speed of rotation of clutch engagement, also, is higher than the peace in the rotating speed of the engine
In the case of the full range of speeds, in the case of the request not from other control units, by the engine electronic control system
Unit actively takes drop rotational speed operation, and the rotating speed of the engine is reduced in the range of the safe speed of rotation；
Clutch engagement step：Engaged controlling the clutch by transmission control unit.
Alternatively, the drop rotating speed step performs when the clutch separation is completed；Wherein, alternatively, the drop turns
Signal when trot drops to zero in response to the clutch pressure of the clutch suddenly and perform.
Alternatively, the drop rotating speed step performs when the clutch starts engagement；Wherein, alternatively, the drop turns
Trot is switched to the gear switch signal of traveling shelves from neutral gear in response to lever suddenly and performed.
Alternatively, do not judge the rotating speed of the engine whether in the safe speed of rotation model in the transmission control unit
The clutch engagement step is performed in the case of in enclosing.
Alternatively, the drop rotational speed operation includes oil-break.
Alternatively, in the case where the clutch is in non-fully engaged condition, acceleration pedal position signal is ignored.
Alternatively, described control method also includes selection step：Institute is optionally performed according to the input signal of user
State drop rotating speed step.
The invention also discloses the control device that a kind of clutch for vehicle automatic speed variator engages, including：
Engine electronic control unit, it includes dropping rotating speed module, and the drop rotating speed module is configured to start in clutch
Judge whether the rotating speed of engine is being suitable in the range of the safe speed of rotation of clutch engagement before transmitting moment of torsion, also, in institute
The rotating speed of engine is stated higher than in the case of the safe speed of rotation scope, drop is actively taken by the engine electronic control unit
Rotational speed operation, the rotating speed of the engine is reduced in the range of the safe speed of rotation；
Transmission control unit, it is configured to control the clutch to start to engage.
Alternatively, described control device also includes selecting unit, its be configured to receive user input signal, and according to
The input signal enables or disables the drop rotating speed module.
Alternatively, whether the transmission control unit is configured to do not judging the rotating speed of the engine in the safety
The clutch is controlled to engage in the case of in the range of speeds.
Compared with prior art, the present invention at least has the following technical effect that：
1) according to the present invention, engine speed judgement can be carried out by ECU before clutch starts to transmit moment of torsion.When
When rotating speed is higher than safe speed of rotation scope, ECU actively takes drop rotational speed operation under the not request from other control units.
This design make it that before clutch starts engagement engine speed is at safe speed of rotation scope, avoids
Engine speed is too high and cause hardware damage when clutch engages.In addition, ECU is in the not request from other control units
It is lower actively to reduce engine speed, reduce the number of communications with other control units, reduce control system to a certain extent
The dependence united to CAN communication, so as to reduce fault rate.
In above process, after ECU carries out reduction of speed to engine, engine speed is maintained compared with the slow-speed of revolution, so meeting
So that engine noise is smaller.
2) clutch engagement can be performed in the case where that need not judge engine speed according to the present invention, TCU
Step.This operation shortens the power recovery time to traveling shelves or when switching travelling shelves by N shelves or P shelves, carries
High driving.
3) according to the present invention, in the case where clutch is in non-fully engaged condition, ECU ignores accelerator pedal position letter
Number.This design prevents in clutch's jointing process because driver's faulty operation and may caused by hardware damage.
4) whether the drop rotating speed step can be used with unrestricted choice according to the present invention, driver.So when driver not
When selection is using the drop rotating speed step, it is possible to achieve ejection starting.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 is the flow chart of the control method provided according to one embodiment of the invention；
The control method that Fig. 2 provides for one embodiment of the invention is switched to N shelves and then again from N shelves in vehicle by D shelves
Gear switching signal under the occasion of D shelves, actual-gear, acceleration pedal position signal, engine speed, engine is switched to turn round
The change curve of square, clutch pressure；
Fig. 3 is the structural representation for the control device that one embodiment of the invention provides.
Description of reference numerals is as follows：
Rotating speed step 101 clutch engagement step 102 drops
The curve 420 of first curve 410 second
The curve 440 of 3rd curve 430 the 4th
The curve 460 of 5th curve 450 the 6th
The lever 501 of 7th curve 470
The transmission control unit 503 of Hall sensor 502
The clutch 505 of CAN 504
The engine speed sensor 507 of engine electronic control unit 506
The accelerator pedal position sensor 509 of vehicle speed sensor 508
The ignition advance angle adjusting means 511 of throttle opening adjusting means 510
Fuel injector 512
Embodiment
The embodiment of the present invention is elaborated below in conjunction with accompanying drawing.
Hereinafter, mentioned " clutch starts before transmission moment of torsion ", can refer to vehicle in starting by N shelves or P
During shelves are switched to traveling shelves (such as D shelves, R shelves, S shelves, M shelves), vehicle is switched to N shelves by traveling shelves in the process of moving
During the traveling shelves for being switched to same travel direction again afterwards, or it is directly switch in vehicle travel process by a traveling shelves
During another traveling shelves, the clutch 505 of vehicle not yet starts engagement or clutch has completed the pressure preparatory stage
And/or oil-filled stage but the occasion for not yet starting transmission moment of torsion.Technical scheme in embodiment go for AT,
All automatic transmission vehicles such as DCT, AMT, CVT.
Fig. 1 is the flow chart for the control method that one embodiment of the invention provides.This method may include to drop rotating speed step 101
With clutch engagement step 102.In rotating speed step 101 is dropped, before clutch 505 starts to transmit moment of torsion, by starting electromechanics
Sub-control unit (ECU) 506 judges whether the rotating speed of engine is being suitable in the range of the safe speed of rotation of the engagement of clutch 505,
Also, in the case where the rotating speed of the engine is higher than the safe speed of rotation scope, by the engine electronic control unit
506 actively take drop rotational speed operation, and the rotating speed of the engine is reduced in the range of the safe speed of rotation.Engaged in clutch
In step 102, engaged controlling the clutch 505 by transmission control unit (TCU) 503.It is this design cause from
Before clutch starts engagement, engine speed is at safe speed of rotation scope, because of engine speed when avoiding clutch engagement
It is too high and cause hardware damage.In addition, ECU actively reduces engine speed under the not request from other control units,
Reduce the number of communications with other control units, reduce dependence of the control system to CAN communication to a certain extent, so as to
Reduce fault rate.
It is to be appreciated that the present invention is not intended to limit drop rotating speed step 101 and clutch engagement step 102 starts to hold
Capable order, as long as but as in dropping rotating speed step 101 limit as, clutch 505 start transmit moment of torsion before will
The rotating speed of the engine is reduced in the range of the safe speed of rotation.From the following description it is recognised that the drop rotating speed
Step 101 can start to perform before clutch engagement step 102, can also be started simultaneously at clutch engagement step 102
Perform, it might even be possible to start to perform later than clutch engagement step 102.
Fig. 2 be vehicle be switched to by D shelves N shelves then again from N shelves be switched to the occasion of D shelves under gear switching signal, reality
Border gear, acceleration pedal position signal, engine speed, engine torque, the change curve of clutch pressure.In fig. 2,
The change of method clutch pressure during vehicle is switched to D shelves from N shelves according to prior art has also been represented by dashed line out
Curve map, so as to compared with the method for the present invention.In the change curve shown in Fig. 2, transverse axis is time shaft T.Below
One embodiment of control method of the invention is more specifically described with reference to Fig. 2 scene.
For the first curve 410, expression be vehicle gear switch signal, it corresponds to the lever that is manipulated of driver
Position.Before time point t1, gear is in D shelves.In time point t1, gear is switched to N shelves from D shelves.Arrived in time point t1
T3, gear are maintained at N shelves.In time point t3, gear is switched to D shelves from N shelves.After time point t3, lever is maintained at D shelves.
For the second curve 420, expression be the speed changer corresponding with the gear switch signal of the first curve 410 reality
Border gear.Herein, actual-gear refer to transmission control unit receive gear switch signal shown in the first curve 410 it
Afterwards, the state after clutch separation or engagement completion is controlled.Due to switching of the clutch between engagement and released state
Journey needs the regular hour, and therefore, actual-gear can postpone in gear switch signal.As shown in Fig. 2 representing gear from D shelves
The time point t2 being switched to after the time point t1 of the gear switch signal of N shelves, the actual-gear of speed changer are just transformed into from D shelves
N shelves.Likewise, being switched to the time point t5 after the time point t3 of the gear switch signal of D shelves from N shelves in expression gear, become
The actual-gear of fast device is just transformed into D shelves from N shelves.
For the 3rd curve 430, expression is acceleration pedal position signal according to present invention vehicle in above process.
In above-mentioned whole process, accelerator pedal is all by about the 40% of the whole stroke of driver's bend the throttle.It is to be appreciated that
Here acceleration pedal position signal is only to represent a kind of exemplary operation of the driver to accelerator pedal.It was found from hereafter,
During according to present invention control clutch engagement, the acceleration pedal position signal can be ignored.Therefore, in practice, represent to accelerate
3rd curve 430 of pedal position signal can be any other shape.
For the 6th curve 460, expression is pressure change according to present invention clutch 505 in above process.
Before time point t1, clutch 505 is fully engaged.In time point t1, in response to being switched to N shelves from D shelves shown in the first curve 410
Gear switch signal, clutch 505 starts to be gradually disengaged, and clutch pressure gradually reduces, until to time point t2 clutch
It is kept completely separate, clutch pressure 0.As shown in the second curve 420, in this time point t2, actual-gear, which becomes, turns to neutral gear.From when
Between point t2 remain 0 to time point t3, clutch pressure.In time point t3, in response to being cut from N shelves shown in the first curve 410
The gear switch signal of D shelves is changed to, clutch starts gradually to engage, and clutch pressure starts gradually to increase, until to time point
T5 clutches are fully engaged.As shown in the second curve 420, in this time point t5, the actual-gear of vehicle also reaches D shelves.For
The 7th curve 470 as a comparison, expression is the pressure change of clutch 505 in above process in the prior art.Can be with
Find out, in the 7th curve 470, clutch 505 is engaged since be later than time point t3 time point t4 just, in time point t5 still
Do not engage and finish.It can be seen that technical scheme relative to existing technologies, enables to clutch 505 to start to connect earlier
Close, also can earlier be fully engaged, shorten the power recovery time by N shelves to D shelves of vehicle, improve the driving of vehicle.
For the 4th curve 440, expression is changed according to the engine speed of vehicle in above process of the invention, its
What is embodied is engine speed change when engine speed is in the range of safe speed of rotation in time point t3.As can be seen that when
Between after point t2 engine speed have of short duration rise quickly.This is due to that clutch pressure is gradually reduced in time point t1 to t2,
During to time point t2, clutch pressure is entirely 0, and now engine is non-loaded, and the rotating speed short time rises quickly, and then can gradually be dropped
It is low.
For the 5th curve 450, expression is changed according to the engine torque of vehicle in above process of the invention
A kind of situation, what it embodied is that engine torque when engine speed exceed safe speed of rotation scope in time point t3 changes.
The curve 455 of dotted portion represents another situation changed according to the engine torque of vehicle in above process of the invention,
But what it embodied is engine torque change when engine speed is in the range of safe speed of rotation in time point t3.
It is to be appreciated that for the 5th curve 450 and curve 455, what it was represented is to start to perform in time point t3
The method of the present invention.Specifically, in time point t3, the drop rotating speed step 101 shown in Fig. 1 is performed, turning for engine is judged by ECU
Whether speed is being suitable in the range of the safe speed of rotation of clutch engagement.In practice, the drop rotating speed step 101 can be in response to
Lever shown in one curve 410 is switched to the gear switch signal of D shelves from N shelves in time point t3 and performed.If in the drop rotating speed
Judge that engine speed is in the range of the safe speed of rotation in step 101, then as shown in curve 455, engine torque can be protected
Hold and be basically unchanged, that is to say, that ECU is without dropping rotational speed operation.Meanwhile clutch 505 starts to engage in time point t3, that is, holds
Clutch engagement step 102 shown in row Fig. 1.Conversely, in gear when the N shelves residence times are too short, engine speed
It may exceed safe speed of rotation scope in time point t3, hold very much although this is not clearly shown in Fig. 2 the 4th curve 440
It is readily understood, now, judge that engine speed is higher than the safe speed of rotation scope in the drop rotating speed step 101.In such situation
Under, now in order to reach the purpose for making engine speed quickly reduce, such as oil-break can be taken in rotating speed step 101 is dropped
Rotational speed operation drops, so as to which engine speed is reduced in the range of safe speed of rotation in time point t4.Similarly, clutch 505 according to
So start to engage in time point t3.
From Fig. 2 the 5th curve 450 and the 6th curve 460 as can be seen that according to drop rotational speed operation of the invention and clutch
The action that device 505 starts engagement, which is, to be started in time point t3, i.e., simultaneous, without as representing the of prior art
As shown in 7 curves 470, the time point t4 in the range of the near safe speed of rotation of engine speed just starts to engage.Need
Understand, because the engagement of clutch 505 generally includes pressure preparatory stage, oil-filled stage, moment of torsion transfer stages and rotating speed
The processes such as synchronous phase, its engaging time is longer, and before the moment of torsion transmittance process of clutch 505 starts, ECU has enough oil-breaks
Time makes engine speed drop to the safe range that clutch 505 engages.Therefore, in the present invention, transmission control unit
In the case of can not judging engine speed whether in the range of the safe speed of rotation, and described in performing according only to gear switch signal
Clutch engagement step.Thus, in principle, the execution of the clutch engagement step 102 in the present invention is can to turn independently of drop
Trot rapid 101, the beginning execution sequence between them before transmitting moment of torsion in clutch 505 by described only by " starting
The rotating speed of machine is reduced in the range of safe speed of rotation " limitation of this condition.
It is all to start to hold in time point t3 that although rotating speed step 101 and clutch engagement step 102 are dropped in example in fig. 2
Capable, but as indicated earlier, ECU can rapidly reduce engine speed to its peace by the drop rotational speed operation of such as oil-break
The full range of speeds.Therefore, in principle, dropping the execution time of rotating speed step 101 even can be later than clutch engagement step 102
The execution time, as long as ensuring the rotating speed of the engine is reduced into the safety before clutch 505 starts to transmit moment of torsion
In the range of speeds.Certainly, when drop rotating speed step 101 and clutch engagement step 102 all start to perform in time point t3,
They can be performed in response to same signal (the gear switch signal for being switched to D shelves in such as the first curve 410 from N shelves),
This is advantageous to the realization of simplified control system.
Can be with by the 6th curve 460 of the corresponding present invention in comparison diagram 2 and the 7th curve 470 of corresponding prior art
See, in the present invention, clutch 505 starts to engage earlier, can also be fully engaged earlier, shorten vehicle by N shelves to D shelves
Power recovery time, improve the driving of vehicle.
In another embodiment of the present invention, the time point t2 that rotating speed step 101 can be completed in clutch separation drops
The random time point in period before the time point t3 for starting to engage with clutch performs.For example, the drop rotating speed step 101
It can be performed in time point t2, now, the drop rotating speed step 101 can drop in response to the clutch pressure of the clutch 505
Performed to signal when zero.By performing the drop rotating speed step of the present invention earlier, be able to will both be sent out earlier before gear shift
Motivation rotating speed is down to the safe speed of rotation scope of the engagement of clutch 505, can also save oil consumption.
In other embodiments of the invention, the D shelves in the said process shown in Fig. 2 can be changed to R shelves or other rows
Shelves (such as S shelves) are sailed, and/or the N shelves in said process are changed to P shelves.
One of the clutch control method of vehicle automatic speed variator of the present invention is described with reference to Fig. 2 and Fig. 3
The detailed operation of embodiment.
When lever is in D shelves, driver's bend the throttle, vehicle is with 3 grades of travelings.Now lever position is D, actual shelves
Position is 3 grades, clutch engagement.In this exemplary operation, as shown in Fig. 2 the 3rd curve 430, accelerator pedal position
Signal keeps constant in whole process, i.e. driver's bend the throttle identical amount, whole stroke as previously described
40%.
In time point t1, driver's not release the gas pedal, by lever push N shelves (it is to be understood that this be probably one not
Appropriate or even wrong driver's operation), as shown in time point t1 the first curve 410.After lever change in location, connect with lever
The sensor connect sends lever position signalling gear switch signal in other words, passes to TCU, and by TCU and CAN, pass to ECU.
After TCU receives lever position signalling, start to lay down clutch pressure, until clutch is kept completely separate so that speed changer enters
Neutral gear, as shown in the 6th curve between time point t1-t2.Now engine loading reduces suddenly, although ECU starts drop and turned round,
But due to the hysteresis of throttle adjustment, still occur that of short duration engine speed rises quickly phenomenon, as in the 4th curve immediately when
Between shown in part after point t2.After ECU receives gear switch signal, believed according to current gear, speed and throttle opening
Number, judge that driver operates, ignore acceleration pedal position signal, start to adjust air inflow, reduce engine torque.Although now
Driver still steps on 40% accelerator pedal, but ECU control throttle inflow amounts, only provides the torsion for maintaining engine idling operation
Square, simultaneously because engine with run compared with the slow-speed of revolution (but may still higher than be suitable for clutch engagement safe speed of rotation model
Enclose), also engine noise is significantly reduced.
In time point t3, lever is pulled back to D shelves by driver, and the sensor being connected with lever sends gear switch signal,
TCU is passed to, and ECU is passed to by TCU and CAN.When ECU receives gear switch signal, according to current gear, speed and acceleration
Pedal position signal judges driver's D shelves traveling to be recovered.ECU is judged engine speed, if now engine speed
More than the safe speed of rotation scope of clutch engagement, then ECU is led not under other control units particularly TCU request
It is dynamic to take drop rotational speed operation such as oil-break, engine speed is declined rapidly.If now engine speed has been decreased to clutch
505 allowed bands being re-engaged, then it can continue to keep idling moment of torsion.When TCU receives gear switch signal, institute is not being judged
In the case of the rotating speed of engine is stated whether in the range of the safe speed of rotation, directly start to perform the clutch engagement step
102。
In other embodiments, in the case where the drop rotating speed step 101 of the present invention is performed such as time point t2 in advance, drop
Rotational speed operation can also include regulation throttle opening and/or the regulation angle of ignition, such as reduce throttle opening and/or reduce point
Fiery advance angle.
In other embodiments of the invention, 3 grades in said process could alternatively be any one of R shelves or D shelves
Gear, the drivable positions such as S shelves, M shelves can also be substituted for；N shelves in said process can also be substituted for P shelves.
In the above-described embodiments, can in the case where clutch 505 is in non-fully engaged condition (such as Fig. 2 time
The random time point of period between point t1 to time point t5, and do not include time point t1, time point t5；Or if vehicle is from quiet
When only starting starting), ECU ignores acceleration pedal position signal, and now driver's bend the throttle will not be also produced so that sending out
The increased effect of motivation rotating speed.It is this to be designed with beneficial to performing the inventive method come during reducing engine speed, by
Cause engine speed increase in the faulty operation of driver.
It is to be appreciated that " in the case where clutch 505 is in non-fully engaged condition, ECU ignores accelerator pedal position
This feature of confidence number " is not limited to application in the present invention, but in other occasions for example without the implementation present invention's
It can also be applied in control method and system.For example, this can be prevented to the unfamiliar driver of driver behavior because inappropriate
Or mistakenly operate accelerator pedal (bend the throttle, then directly reverses D shelves such as when neutral gear slides) cause it is hard to vehicle
The damage of part.Preferably, driver can choose whether to close this acceleration pedal position signal of ignoring according to the needs of oneself
Function, after this function is closed, can so realize vehicle ejection starting (with manual vehicle, the in situ neutral gear of driver
After Shi Meng steps on the gas, hang drive shift and start to walk rapidly).
In the above-described embodiments, drop rotating speed step 101 whether can be enabled by driver's unrestricted choice, this passes through a choosing
Step is selected to realize, for example, optionally performing the drop rotating speed step 101 according to the input signal of user.It is this design to
Give the bigger selection of driver freely and when wanting to realize ejection starting closing can have been selected to ignore accelerator pedal position
Drop rotating speed step 101 is closed in the function of signal and selection so that ejection starting can be better achieved in vehicle, avoid drop rotating speed
Step 101 is to obstruction caused by vehicle ejection starting.
In the above-described embodiments, the safe speed of rotation range set that the clutch 505 engages is less than or equal to for finger
The 2000rpm range of speeds, can also be set smaller than or the range of speeds equal to 1950rpm.
The invention also discloses the control device that a kind of clutch for vehicle automatic speed variator engages, including：Start
Electromechanical sub-control unit 506, it includes dropping rotating speed module, and the drop rotating speed module is configured to start to transmit in clutch 505 to turn round
Judge whether the rotating speed of engine is being suitable in the range of the safe speed of rotation of the engagement of clutch 505 before square, also, in the hair
In the case that the rotating speed of motivation is higher than the safe speed of rotation scope, drop is taken by the active of engine electronic control unit 506
Rotational speed operation, the rotating speed of the engine is reduced in the range of the safe speed of rotation；Transmission control unit 503, it is configured
Start to engage into the clutch 505 is controlled.
Fig. 3 is the structural representation for the control device that one embodiment of the invention provides.As can be seen that described in Fig. 3
In embodiment, lever 501 is connected with Hall sensor 502；Hall sensor 502 is connected with transmission control unit signal；Become
Fast device control unit 503 is connected with the signal of clutch 505, for controlling engagement and the disconnection process of clutch 505.Engine turns
Fast sensor 507, vehicle speed sensor 508, accelerator pedal position sensor 509 are believed with engine electronic control unit 506 respectively
Number connection；Throttle opening adjusting means 510, the signal of ignition advance angle adjusting means 511 and fuel injector 512 respectively with engine
The signal of electronic control unit 506 connects.Transmission control unit 503, engine electronic control unit 506 respectively with CAN
504 signals connect.
In one embodiment of the invention, the transmission control unit 503 is configured to do not judging the engine
Rotating speed whether in the range of the safe speed of rotation in the case of control the clutch 505 to engage.This design causes clutch
Device 505 can start to engage compared with the prior art earlier, can also be fully engaged earlier, recover so as to shorten the power of vehicle
Time, improve the driving of vehicle.
In another embodiment of the present invention, described control device also includes selecting unit (not shown), and it is configured
Into the input signal of reception user, and the drop rotating speed module is enabled or disabled according to the input signal.It can so to drive
Whether the person's of sailing unrestricted choice enables drop rotating speed module, improves the selection free degree of driver.
In another embodiment of the present invention, the engine electronic control unit is configured to the fluid drive in vehicle
In the case that the clutch 505 of device is in non-fully engaged condition, ignore acceleration pedal position signal.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as employ the inventive concept and technical scheme of the present invention progress various improvement, or it is not improved directly application
In other occasions, within protection scope of the present invention.
Claims (10)
1. the control method that a kind of clutch for vehicle automatic speed variator engages, including:
Rotating speed step (101) drops：Before clutch starts to transmit moment of torsion, engine is judged by engine electronic control unit
Whether rotating speed is being suitable in the range of the safe speed of rotation of clutch engagement, also, is higher than the peace in the rotating speed of the engine
In the case of the full range of speeds, drop rotational speed operation is actively taken by the engine electronic control unit, by the engine
Rotating speed is reduced in the range of the safe speed of rotation；
Clutch engagement step (102)：Engaged controlling the clutch by transmission control unit；
Wherein, in the case where the clutch is in non-fully engaged condition, acceleration pedal position signal is ignored.
2. control method according to claim 1, it is characterised in that the drop rotating speed step is complete in the clutch separation
Into when perform.
3. control method according to claim 2, it is characterised in that the drop rotating speed step is in response to the clutch
Signal when clutch pressure drops to zero and perform.
4. control method according to claim 1, it is characterised in that the drop rotating speed step starts to connect in the clutch
Performed during conjunction.
5. control method according to claim 4, it is characterised in that the drop rotating speed step is cut in response to lever from neutral gear
Change to the gear switch signal of traveling shelves and perform.
6. according to the control method any one of claim 1-5, it is characterised in that the drop rotational speed operation includes disconnected
Oil.
7. according to the control method any one of claim 1-5, it is characterised in that also include selection step：According to
The input signal at family optionally performs the drop rotating speed step.
8. the control device that a kind of clutch for vehicle automatic speed variator engages, including：
Engine electronic control unit (506), it includes dropping rotating speed module, and the drop rotating speed module is configured in clutch
(505) start to judge before transmitting moment of torsion whether the rotating speed of engine is being suitable in the range of the safe speed of rotation of clutch engagement,
Also, in the case where the rotating speed of the engine is higher than the safe speed of rotation scope, by the engine electronic control unit
Drop rotational speed operation is actively taken, the rotating speed of the engine is reduced in the range of the safe speed of rotation；
Transmission control unit (503), it is configured to control the clutch to start to engage；
Wherein, in the case where the clutch is in non-fully engaged condition, acceleration pedal position signal is ignored.
9. control device according to claim 8, it is characterised in that also including selecting unit, it is configured to receive user
Input signal, and the drop rotating speed module is enabled or disabled according to the input signal.
10. control device according to claim 8 or claim 9, it is characterised in that
Whether the transmission control unit is configured to do not judging the rotating speed of the engine in the range of the safe speed of rotation
In the case of control the clutch to start to engage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610223685.5A CN105757142B (en) | 2013-08-26 | 2013-08-26 | The control method and device that a kind of clutch for vehicle automatic speed variator engages |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375371.3A CN103498879B (en) | 2013-08-26 | 2013-08-26 | The controlling method that a kind of clutch for vehicular automatic transmission engages and device |
| CN201610223685.5A CN105757142B (en) | 2013-08-26 | 2013-08-26 | The control method and device that a kind of clutch for vehicle automatic speed variator engages |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310375371.3A Division CN103498879B (en) | 2013-08-26 | 2013-08-26 | The controlling method that a kind of clutch for vehicular automatic transmission engages and device |
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| CN105757142A CN105757142A (en) | 2016-07-13 |
| CN105757142B true CN105757142B (en) | 2018-03-23 |
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| CN201610223685.5A Active CN105757142B (en) | 2013-08-26 | 2013-08-26 | The control method and device that a kind of clutch for vehicle automatic speed variator engages |
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| CN108286576B (en) * | 2017-01-10 | 2021-05-18 | 舍弗勒技术股份两合公司 | Safety control method and device for clutch system |
| DE102017202883A1 (en) * | 2017-02-22 | 2018-08-23 | Robert Bosch Gmbh | Method and device for controlling a clutch |
| CN109139738B (en) * | 2017-06-19 | 2020-08-28 | 上海汽车集团股份有限公司 | Clutch control method and device |
| CN107605993A (en) * | 2017-08-01 | 2018-01-19 | 宝沃汽车（中国）有限公司 | Clutch controller, system and method and vehicle |
| CN109322991B (en) * | 2017-08-01 | 2020-06-02 | 宝沃汽车（中国）有限公司 | Clutch control device, system and method thereof and vehicle |
| CN109968975A (en) * | 2017-12-28 | 2019-07-05 | 河南森源重工有限公司 | Sweeper and its actuating unit |
| CN110230691B (en) * | 2018-03-05 | 2021-05-18 | 上海汽车集团股份有限公司 | Vehicle and gear shifting control method and system of electronic clutch |
| CN114776801B (en) * | 2022-04-18 | 2024-03-22 | 哈尔滨东安汽车发动机制造有限公司 | Feedforward control method for clutch pressure in automatic transmission garage shifting |
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