CN102556052B - Change the method to the mechanical couplings in dynamical system of the drive train of motor vehicles - Google Patents
Change the method to the mechanical couplings in dynamical system of the drive train of motor vehicles Download PDFInfo
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- CN102556052B CN102556052B CN201110392652.0A CN201110392652A CN102556052B CN 102556052 B CN102556052 B CN 102556052B CN 201110392652 A CN201110392652 A CN 201110392652A CN 102556052 B CN102556052 B CN 102556052B
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Abstract
The present invention relates to change the method to the mechanical couplings in dynamical system of the drive train of motor vehicles, the dynamical system of described motor vehicles is equipped with at least two drive train, wherein at least the first drive train (2) in these two drive train (2,3) is coupled by the gear ratio (iEIM) of different mechanical couplings especially machinery in the driving process of motor vehicles, wherein affects power or the moment of these two drive train (2,3) when changing mechanical couplings.In order to ensure the change of mechanical couplings and passenger is not aware of this point, the mechanical couplings of the first drive train (2) in these two drive train (2,3) is changed at least two operational mode, wherein the first operational mode causes the operating point the most slowly of these two drive train (2,3) to change, and is then capable of the change of operating point the most faster of these two drive train (2,3) for the second motor pattern.
Description
Technical field
The present invention relates to a kind of method to the mechanical couplings in dynamical system of drive train for changing motor vehicles,
The dynamical system of described motor vehicles is equipped with at least two drive train, wherein at least the first driving in these two drive train
Unit is coupled by different mechanical couplings in the driving process of motor vehicles, wherein change mechanical couplings time affect this two
The power of platform drive train or moment, and the present invention relates to a kind of motor vehicles controller and one for performing described method
Transmission control instrument.
Background technology
Familiar motor vehicles, especially hybrid electric vehicle, electric motor car or hydraulic car, described motor vehicles has at least two
Drive train, wherein at least the first drive train in these two drive train can be coupled to by different mechanical couplings
In dynamical system.Such as in the case of making drive train coupling or decoupling or in order to switch variator be that is
When changing the gear ratio of variator and change this mechanical couplings, affect described first and other drive train power or
Person's moment.
The mechanical couplings of drive train change these great majority by means of frictional connection or form fit connect
Clutch is carried out.The clutch great majority connected in this form fit can not be handled under a load.Described form fit is even
The clutch connect requires to load completely separation, say, that require that moment affects the non-moment until drive train and institute
State the synchronization between the primary side of clutch and primary side.
Know according to DE 101 26 348 A1, implement when changing the register ratio of variator of the first drive train
The moment impact of another drive train.Use during the manual transmission of the automatization in switching main driving machine group at this
Torque is harmonized by subsystem, thus driver is not aware of the change of acceleration.By the torque required by driver with
It is compensated by described subsystem when switching by the difference between the torque that described variator obtains.
For changing the coupling from the first clutch of Guan Bi to the second clutch of Guan Bi of the drive train being configured to motor
Close, need following steps.First the moment of described motor is affected, say, that lower moment or form moment, being used for reaching
Non-loaded property.In the next step, implement the moment impact of another drive train simultaneously.This is by being driven by described second
Unit undertakes this mode of moment share lowering on described motor or being formed to be carried out, be used for continuing to produce in advance to
Fixed total rated moment.Then disconnect described first clutch.Affect rotating speed in other words by the moment of described motor subsequently to adjust
Joint produces synchronization in the primary side and primary side of described second clutch, and this is corresponding to synchronization actively.If
Having reached this synchronization, described second clutch is just closed by that.So affect the power of described second drive train subsequently
Square, thus in described second drive train, lower the moment share (or contrary) formed by motor, it is used for continuing to produce in advance
First given total rated moment.This is equivalent to moment and transfers to described motor from described second drive train.
Summary of the invention
For the drive train for changing motor vehicles to for the method for the mechanical couplings in dynamical system, Qi Zhongsuo
The dynamical system stating motor vehicles is equipped with at least two drive train, and this dynamical system so higher traveling with motor vehicles can
By property comfortableness, discharge and in terms of consumption optimal in the case of implement the change of mechanical couplings of drive train: these two are driven
At least the first drive train in motivation group is coupled by different mechanical couplings in the driving process of motor vehicles, Qi Zhong
Power or the moment of these two drive train is affected when changing described mechanical couplings.According to the present invention, run at least two
Changing the mechanical couplings of the first drive train in these two drive train in pattern, wherein the first operational mode causes these two
The change of operating point the most slowly of drive train, and it is capable of these two drive train by the second operational mode
Operating point change the most faster, wherein changes the first driving in these two drive train in another kind of operational mode
The mechanical couplings of unit, described another kind of operational mode causes the faster than the first operational mode in time of these two drive train
Operating point change and the change of slower than the second operational mode in time operating point, in described another kind of operational mode,
At least one drive train is run with the torque of suboptimum.Thus real when changing the mechanical couplings of described first drive train
Execute the moment impact of described first drive train and the moment impact of described at least another drive train.By two kinds of differences
Operational mode make for ensureing, at least one most preferably run in a kind of operational mode in these two drive train is driven
In the operational mode of motivation group, wherein when affecting the moment of another drive train in view of this optimal operation.?
Such optimal method of operation is not then considered by two operational modes.Be achieved in motor vehicles to for changing described
The fast reaction of the requirement of the mechanical couplings of one drive train.
The change of mechanical couplings such as also refers to the enforcement of the shift process of variator.The replacing ratio of the gear ratio of variator
Such as changing or being realized by the regulation of the gear ratio of stepless variator, wherein by described gear stage by gear stage
Couple a drive train, and wherein said regulation great majority are along with the moment impact of drive train.Described first
The change of the mechanical couplings of drive train also includes the change of the application point of the drive train in dynamical system.Ratio is as described therein
Drive train is coupled from different transmission shafts according to the running status of described dynamical system.The mechanical couplings of drive train
Change such as also refer to this drive train in the specific running status of dynamical system such as in order to avoid hypervelocity for
Efficiency reasons or when drive train is faulty decoupling from dynamical system.The example of this respect is to have two to be driven
The hybrid electric vehicle of axletree, in these two axletrees, an axletree drives only by the first drive train.Described first
Drive train great majority decoupling and cutting off when motor vehicle speed is higher.If motor vehicle speed drop to the most again threshold value it
Under, that is just again switched on and couples described first drive train, and this causes the moment of described drive train to affect.
Advantageously, the operating point of these two drive train is almost changed mutually on the contrary.It is achieved in this point, the most just
It is to make the moment share reduced by wherein drive train synchronize (transfer equably) to be formed to by another drive train
In moment share.As a result of which it is, this change of described mechanical couplings is not discovered by passenger.
In a kind of design, in described first operational mode, at least one drive train is transported with optimal torque
OK, this optimal torque of described drive train is wherein considered when affecting the moment of another drive train.This
In the case of can change described coupling in the driving process of motor vehicles, it is possible in not counteractive feelings to motor vehicles
Cosily change described coupling under condition to enable in particular to shift gears.
In a kind of improvement project, regulate optimal torque according to the power of drive train.Such as having uniformly
Combustion characteristics petrol engine for, basis moment or the moment that therefrom derives from represent optimal torque.First
During the load of drive train separates, described petrol engine runs with optimal torque (basis moment).For carry out
Load separates, and so affects petrolic optimal torque so that it matches with previously given total rated moment.So
Affect the torque of the first drive train so that it has previously given total rated moment and petrolic optimal torque
Between differ from and trend towards zero.Gear ratio is must account at this.Can avoid making efficiency emission performance in other words become at this
The angle of ignition intervention of difference or cylinder blanking (Zylinderausblendungen).For optimal torque, such as disappearing
Consumption, discharge and in the case of service life optimal (No-mistake Principle), run described drive train and the most electric storage of the assembly attached troops to a unit
Can device, catalyst converter, turbocharger.
In another kind of flexible program, the power according to driving power train regulates optimal torque.Drive changing first
Before the mechanical couplings of motivation group, the torque of the second drive train is positive and the torque of the first drive train is negative.In advance
First given total rated moment is negative equally.When the first drive train load separates, in the torque of the second drive train
Produce zero crossing, because described second drive train must individually produce described negative for non-loaded first drive train
Total rated moment.The interruption gap in other words of the machinery in dynamical system in this case, this can cause dynamical system
Ballistic kick in system and uncomfortable noise.The most prespecified at this optimal torque is applied in the second drive train,
Corresponding zero crossing is designed to " softer " by it, thus stops the ballistic kick in uncomfortable noise dynamical system in other words.
The softer design of zero crossing such as by the gradient being restricted that is zero crossing of optimal torque in the range of
The temporal pace of change being restricted realizes, and described optimal torque is then close to previously given total nominal force
Square.So affect the torque of described first drive train so that this torque has previously given total rated moment and drives with second
Difference between the optimal torque of motivation group, namely trends towards zero.
In a kind of improvement project, regulate optimal torque according to the power of whole motor vehicles.Advantage of this is that,
If the axletree that drive motor vehicles of the first drive train or a wheel and another drive train drive
Another wheel or another root axletree, that just considers the motion of motorcar body when affecting the moment of described drive train
Steering characteristic voluntarily with motor vehicles.It not suddenly to perform the displacement between described axletree or wheel at this, thus avoid
The uncomfortable motion of the motorcar body caused due to the motion of wheel suspension or such as when zig zag, driver is come
Say unused steering characteristic voluntarily.Described thus it is restricted in terms of its power by the optimal torque of the present invention.Maximum
Current transport condition (motor vehicle speed, machine such as can be tried to achieve and depend on to the power allowed by means of running test
The coefficient of friction estimated, the load of motor vehicles and similar factor between motor-car acceleration, tire and road surface).
Especially when in view of the power of drive train, this can cause the under-effected of moment to the first drive train.
In order to make the first drive train load separate, so affect the optimal torque of the second drive train so that it is with previously given
Total rated moment match.For the dynamic change of total rated moment, not always it is fully able to accomplish this point, than
As described in optimal torque the most lingeringly follow as described in setting value time.If the torque of described first drive train is in advance
Difference between the optimal torque of given total rated moment and described second drive train compensates, then described first drives
The torque of motivation group trends towards zero in this case and not exclusively.
In a kind of improvement project, during the mechanical couplings changing the first drive train, the scope of a kind of permission limits
Make the torque of drive train.The way of the torque that such scope by described permission limits drive train cause with
The good deviation between torque and/or and previously given total rated moment between deviation.Thereby guarantee that, changing described coupling
Just with the scope of described permission when closing especially gear ratio.
In a kind of design, so reduce or expand the scope of permission of torque of described drive train, method
It is such as to improve or reduce ultimate value or adjust the change curve of the limit so that the torque of drive train is drilled without sudden change
Enter.Thereby guarantee that will not in the torque of drive train mutagenesis.
In a kind of flexible program, in the mistake of the mechanical couplings changing the first drive train in described second operational mode
Journey exceedes or is less than the optimal torque of described at least one drive train.This have the consequence that, for violent machine
The first quick decoupling of drive train can be made for motor-car acceleration or brake operating or change its mechanical couplings, being used for preventing
Only exceeding the speed limit and be therefore prevented from mechanical failure, described hypervelocity and mechanical failure may result in critical riding stability.Driving
When motivation group is faulty, it is also possible to need such quick decoupling.For avoiding travel conditions serious for safety, may
Need also exist for making the described first quick decoupling of drive train or changing its mechanical couplings rapidly, for such as providing ESP to do
In advance.Quickly the changing of mechanical couplings is probably and is necessary, for being floored by accelerator pedal completely by driver
(Kick-Down) in overtaking process, such as produce the resultant couple of maximum possible time the most possibly.Described second operational mode
Thus allow to change corresponding mechanical couplings quickly, do not comply with for corresponding mechanical couplings and be that is less than
Or exceed optimal torque and/or previously given total rated moment.
For being set as the positive total rated moment namely driven, advantageously avoid motor vehicles for safety
The most so-called accelerograph of serious raising speed, method is only to be only below described total rated moment.
As an alternative, for being set as the total rated moment namely braked born, it is to avoid for safety
Serious slows down and thus avoids the braking strengthened, and method is only above described total rated moment.
Improved the power of the change of mechanical couplings by this way leaving optimal torque, this is in selected fortune
Row state is a need for.
Advantageously in described first drive train, regulate synchronous rotational speed by rotational speed regulation.At this preferably to loss power
Square and the inertia mass for the inertia mass making the first drive train and the driver part being coupled are accelerated and are necessary
Torque carries out pre-control, is used for improving rotational speed regulation.
In a kind of improvement project, the present invention relates to a kind of motor vehicles controller, this motor vehicles controller triggers at least two
Platform drive train.In order in the driving process of motor vehicles reliably by the mechanical couplings of the first drive train from the first coupling
It is especially the second gear ratio from the first ratio changing that the second coupling is changed in conjunction, there are some devices, and described device is extremely
Lack the change of the mechanical couplings of the first drive train regulated in two kinds of operational modes in these two drive train, wherein the first fortune
Row mode causes the operating point the most slowly of these two drive train to change, and then carries out this by the second operational mode
The change of operating point the most faster of two drive train.Thus adjust in the most current running status of motor vehicles
The change of described coupling.In the second operational mode, especially support the dynamic of motor vehicles further, and in the first operational mode
The torque of these two drive train can be most preferably adjusted when regulating optimal torque.
Described device advantageously receives and is used for requiring the first or second operational mode and/or for first and
The requirement signal switched between two operational modes.Described motor vehicles controller in this case with another controller ratio
As transmission control instrument communicates, another controller described requires that a kind of operational mode judges in other words when should be from the
One operational mode switches to the second operational mode and should return switching.
In a kind of design, described device in the described first or second operational mode especially in the time of definition
Interval sends really after regulating the first or second running status by the triggering of the first second drive train in other words
Recognize signal and receive execution signal after change the mechanical couplings of described first drive train, gear ratio and/or with
In these two drive train, the described first or second running status is cancelled again after step.
Described motor vehicles controller thus controls electronic installation, and this electronic installation is in described first drive train in other words
Corresponding moment is regulated in second drive train.Described motor vehicles controller such as receive require signal time according to described first
Running status the second running status in other words sets up the non-loaded property of described first drive train, and then sends confirmation letter
Number.Particularly by the setting of maximum persistent period, the change of described coupling is restricted to specific time interval, Qi Zhong
The moment that first drive train must be fully achieved within the persistent period of described maximum affects the most non-loaded property.
The another kind of improvement project of the present invention relates to a kind of transmission control instrument, and this transmission control instrument triggers one and includes
At least one is for the variator of the clutch of the mechanical couplings of switching the first drive train.In order to for this transmission control
Also realize the regulating reliably by the running status of motor vehicles and change of coupling of described first drive train for instrument, also exist
Some devices, described device sends the requirement signal for regulating the first or second operational mode.This require that signal is at this
Being received by described motor vehicles controller, wherein said controller can send signal to each other, described signal correspondingly to by
Another controller receives the situation of signal and confirms.Herein relate between described transmission control instrument and motor vehicles controller
So-called signal exchange (Handshake).
In a kind of design, along with described, described device requires that signal output is for regulation the first or second operation
The persistent period of the definition of state.The working method thus making each controller is coordinated with each other.
Described in a kind of flexible program, device receives confirmation signal, this confirmation signal report the described first or second fortune
The correct regulation of row state.Thus carried out completely moment impact after report the first drive train non-loaded property and
Change and/or the synchronization of described mechanical couplings is started by described transmission control instrument.
In a kind of improvement project, described device changes same in other words in the mechanical couplings of described first drive train completely
Execution signal is sent after step.After this signal, motor vehicles controller cancel and terminate the first drive train in other words
Moment affect the most non-loaded property.Occupy the most again normal condition.
Accompanying drawing explanation
The present invention allows substantial amounts of embodiment.One of them to solve in detail by means of the accompanying drawing shown in pattern
Release.Accompanying drawing is shown below:
Fig. 1 is the schematic diagram of the driving power train of hybrid electric vehicle；
Fig. 2 is for the signal flow diagram table by the driving power train of Fig. 1；
Fig. 3 is for the first analog result by the driving power train of Fig. 1；
Fig. 4 is for the second analog result by the driving power train of Fig. 1.
Identical feature is denoted by the same reference numerals.
Detailed description of the invention
Fig. 1 shows the driving power train 1 of hybrid electric vehicle, as the first drive train for this hybrid electric vehicle
Motor 2 torque and as the second drive train internal combustion engine 3 torque be added.Described motor 2 is at this directly or logical
Cross epicyclic train 4 and act on transmission input shaft 5.The clutch that one of both couplings are connected by the two form fit
6, the Guan Bi of one of 7 selects.When clutch 6 closes, described motor 2 directly acts on described transmission input shaft 5.From
When clutch 7 closes, this motor 2 acts on the sun gear 8 of described epicyclic train 4 and thus acts on the gear ratio of ≠ 1
Described transmission input shaft 5.The connection sheet of described epicyclic train 4 is connected with transmission input shaft 5 and described planet tooth
The internal gear of train 4 is connected with case of transmission.Additionally, there may be startup clutch 9.Multiple transmission gear levels 10 can
With and the driving wheel 11 of motor vehicles between set up and be connected.
Below from the startup clutch 9s of Guan Bi in the case of being fixedly selected transmission gear level 10.For more preferably
Understanding Fig. 1, it is pointed out here that, described motor 2 is about described transmission input shaft 5 arranged concentric, and described transmission input shaft 5 leads to
Cross startup clutch 9 to be connected with internal combustion engine 3.Described first clutch 6 with its primary side 13 the most rotatably with described
Transmission input shaft 5 is connected, also with regard to described transmission input shaft 5 arranged concentric primary side 14 the most regularly with electricity
Machine 2 is connected.
By changing the gear ratio iEIM that the coupling of motor 2 makes motor 2 be coupled used by change in other words, from Guan Bi
Clutch 6 processes to the clutch 7 of Guan Bi by following steps:
First the moment of motor 2 is affected, it means that, motor 2 lowers moment for regulating on described clutch 6
Non-loaded property.The moment share reduced on motor 2 is undertaken by internal combustion engine 3, previously given the most specified for continuing to produce
Moment.Then disconnect described clutch 6.Subsequently by motor 2 in the primary side and primary side 15 and 16 of described clutch 7
Moment affect in other words rotational speed regulation to produce synchronization.Then described clutch 7 is closed.
The form formed with moment on described motor 2 subsequently carries out further moment impact.Simultaneously at described internal combustion
Moment is lowered on machine 3.The moment share reduced on internal combustion engine 3 is in view of being not equal to phase in the case of the gear ratio iEIM of 1
When in the moment share formed by described motor 2, for continuing to produce previously given total rated moment.
Fig. 2 shows for the signal flow diagram table by the driving power train 1 of Fig. 1.Internal combustion engine 3 is to have uniform combustion at this
Burn characteristic and for carrying out the petrol engine of the electronic throttle of MAF regulation.The limited regulation speed of choke valve
Dynamic inflation effect in the suction nozzle of degree and internal combustion engine 3 does not allow height dynamically to regulate previously given MAF
With consequent engine torque.Act on empty slowly for the temporary transient offer-rated moment trqLeadEng of internal combustion engine 3
Gas circuit footpath.Described internal combustion engine 3 produces preferably basis moment Eng_ with the preferable angle of ignition in preferably running
TrqBsIdeal, this most basic moment Eng_trqBsIdeal followed by described temporary transient offer-rated moment
trqLeadEng.From temporarily offer-rated moment trqLeadEng to the transfer of preferably basis moment Eng_trqBsIdeal,
Namely air path power, in square frame 17, retarding element and the series connection delaying saving by means of the first rank are simulated.
On the contrary, the change to the intervention of the angle of ignition and thus engine torque almost can be without carrying out tardily.For
Second rated moment trqDesEng of internal combustion engine 3 acts on angle of ignition path faster.Delay relative to the preferable angle of ignition
The regulation angle of ignition, the thus deterioration of efficiency of internal combustion engine 3, fuel consumption is had a negative impact by this.The actual moment of internal combustion engine 3 exists
This reduces relative to preferably basis moment Eng_trqBsldeal.Delaying regulation and moment can only be subtracted by means of the angle of ignition
Little to minimum basic moment Eng_trqBsMin produced by flammability limits.Can be by the injection blanking of each cylinder
(Einspritzausblendung) reduce moment further, but this causes the raising that waste gas discharges.The reality of internal combustion engine 3
Moment can be by the injection blanking of all cylinders down to minimum moment Eng_ suitable with the loss moment of internal combustion engine 3
trqMin。
If there is such as the moment deposit heating catalyst converter, that is it is possible to pass through doing sth. in advance of the angle of ignition
The actual moment of internal combustion engine 3 is brought up to described basis moment Eng_trqBs by regulation always.If there is no moment deposit,
The most described preferable basis moment Eng_trqBsIdeal just overlaps with basis moment Eng_trqBs.Torque limit is come
Say and be suitable for:
Eng_trqMin<Eng_trqBsMin<Eng_trqBsIdeal≤Eng_trqBs。
According to Fig. 2, preferably basis moment Eng_trqBsIdeal is equivalent to the optimal torque Eng_ of internal combustion engine 3
trqOpt.If running internal combustion engine 3 with preferably basis moment Eng_trqBsIdeal, then there is minimum possible discharge
The consumption possible with minimum.Deviation bring therewith about fuel consumption i.e. efficiency and the different shortcoming of waste gas discharge and
Should be avoided.
Engine control system by means of parameter that is measured or that estimated for having suction nozzle injection structure
Such as from engine speed, Air suction pipe pressure, time of ignition and air coefficient λ, current reality is tried to achieve for petrol engine
Torque and torque limit (basis moment Eng_trqBs, preferably basis moment Eng_trqBsIdeal, minimum basic moment
Eng_trqBsMin and minimum moment Eng_trqMin).
From total rated moment trqDes, strategy rated moment trqDesEIMStrategy is tried to achieve, at electricity in square frame 18
Machine 2 properly functioning in should time average ground observe this strategy rated moment trqDesEIMStrategy.Described strategy is specified
Moment trqDesEIMStrategy depends on the current state of electric automobile-used circuit and together with electric accumulator and depends on
The rotating speed of motor 2 and internal combustion engine 3 selected gear ratio iEIM between motor 2 and internal combustion engine 3 in other words.
In properly functioning, described strategy rated moment trqDesEIMStrategy gear ratio iEIM convert and
Total rated moment trqDes is added up to negative sign.Described temporary transient offer-rated moment for internal combustion engine 3 is provided at this
trqLeadEng.Internal combustion engine 3 thus produces total rated moment trqDes and drives motor 2 extraly, and this motor 2 is at majority
In the case of work in the way of negative tactful rated moment trqDesEIMStrategy is with electromotor.The ideal of described internal combustion engine 3
Basic moment Eng_trqBsIdeal and thus its optimal torque Eng_trqOpt is due to air driving dynamics slightly
Described temporary transient offer-rated moment trqLeadEng is provided tardily.
Unconstrained nominal torque trqDesEIMUnLim of motor 2 with gear ratio iEIM convert in the case of from always
Difference between the optimal torque Eng_trqOpt of rated moment trqDes and internal combustion engine 3 produces.Described motor 2 the most limited
Nominal torque trqDesEIMUnLim of system by two limit trqDesEIMMaxRmp tried to achieve in square frame 19 and
The restriction of trqDesEIMMinRmp.The first nominal torque trqDesEIM for motor 2 is produced at this.In properly functioning,
The two limit trqDesEIMMaxRmp and trqDesEIMMinRmp depend on motor 2, automobile-used circuit and electric accumulator
Current operating bounds.
Starting the change of the mechanical couplings especially gear ratio iEIM of motor 2 in the first operational mode, method is by binary
Signal bShift1 to arrange true(genuine).The signal bShift=true thus derived from, the signal bShift=of this derivation
True is produced by the "or" logic between the signal bShift2 of another binary.Switch 20 enters into location below
In and the temporary transient offer-rated moment trqLeadEng of internal combustion engine 3 is provided described in total rated moment trqDes being switched to.By
This starts to produce total rated moment trqDes only by internal combustion engine 3.Described optimal torque Eng_trqOpt trends towards total value
Determine moment trqDes.The most immediately motor 2 is switched to non-loaded state.The unconstrained nominal torque of motor 2
TrqDesEIMUnLim only with the optimal torque Eng_trqOpt of described internal combustion engine 3 close to total rated moment trqDes
Degree reduces.This is by the formation of the difference between the best torque Eng_trqOpt of total rated moment trqDes and internal combustion engine 3
Realize.
Due to air path dynamically (Luftpfaddynamik), the optimal torque Eng_trqOpt of internal combustion engine 3 will not stand
I.e. follow notable dynamic total rated moment trqDes.Unconstrained nominal torque trqDesEIMUnLim of described motor 2
It not the most to be completely maintained on 0Nm.Therefore for bShift1=true by the two limit trqDesEIMMaxRmp and
TrqDesEIMMinRmp is placed in 0Nm.This point is the most so carried out, thus in the first nominal torque for motor 2
TrqDesEIM does not produce sudden change.This point is the most so carried out, thus previously given time (such as 400ms) inner general
It is placed in 0Nm to described limit ramped shaped.The most described motor 2 is non-loaded.
Figure 2 illustrates torque difference trqDelta, this torque difference trqDelta is in situation about converting with gear ratio iEIM
Under deduct the first nominal torque for motor 2 from unconstrained nominal torque trqDesEIMUnLim of described motor 2
TrqDesEIM produces.Can not be produced by motor 2 when limiting by trqDesEIMMaxRmp and trqDesEIMMinRmp
Thus it is transferred to outside moment share in second rated moment trqDesEng of (aufschalten) described internal combustion engine 3.Described use
The second rated moment trqDesEng in internal combustion engine 3 then leaves the optimal torque Eng_trqOpt of internal combustion engine 3, and this causes
Blanking is sprayed in intervention to the angle of ignition in other words.This shows with signal blARIs and bCtOff of binary in square frame 24.
The switching of torque differences trqDelta observes, for make total rated moment trqDes, the optimal torque Eng_ obtained than internal combustion engine 3
TrqOpt regulates high priority.Change priority by the omission of described switching, namely can use mixed form.
Observing of total rated moment trqDes is important, otherwise there is the unexpected danger accelerated of motor vehicles.
For the most non-loaded property of motor 2, say, that for first nominal torque of trqDesEIM=0Nm
For, for previously given synchronization nominal torque trqDesEIMSync of motor 2, as final nominal torque
trqDesEIMFin.This is carried out with the signal bSync=true of binary by the conversion of switch 21.Described synchronization nominal torque
TrqDesEIMSync comprises moment share and the pre-control share of rotational speed regulation, but the calculating of described pre-control share exists
Not shown in Fig. 2.
After carrying out synchronizing and changing mechanical couplings, the signal bSync=false(vacation of binary is set) and again
Load is transferred on motor 2.Starting this process, method is by the signal bShift1 of described binary and thus by derivation
Signal bShift false is set.The two limit trqDesEIMMaxRmp and trqDesEIMMinRmp are just placed at
Effective numerical value in often running.This point is the most so carried out, thus in the first nominal torque trqDesEIM for motor 2
In do not produce sudden change.Internal combustion engine 3 preferably runs with optimal torque Eng_trqOpt.
Starting the second operational mode of mechanical couplings for changing motor 2, method is to be set by the signal bShift2 of binary
Put true.That is this can enter when the signal bShift1 of previously described binary is equal to false from properly functioning
OK.The signal bShift=true of the most described derivation, described switch 20 enters in location below and by total rated moment
TrqDes is switched to the described temporary transient offer-rated moment trqLeadEng for internal combustion engine 3.Thus only by internal combustion engine
3 generations starting total rated moment trqDes.Contrary with the second operational mode, the first nominal torque of described motor 2 exists
It is switched on trqDesEIM=0Nm with suddenling change shape during bShift2=true.Described motor 2 is the most non-loaded.This by means of
Switch 22 is carried out, and the signal bShift2 of described binary is reacted by described switch 2.The torque being not equal to 0Nm is produced at this
Difference trqDelta.Second rated moment trqDesEng of described internal combustion engine 3 leaves the optimal of internal combustion engine 3 with then suddenling change shape
Torque Eng_trqOpt.Owing to the signal bSync=true of described binary carrys out permutator 21, described synchronization thus can be started.
Can also be from described first operational mode such as when facing hypervelocity dangerous or there is drive train
Second operational mode described in requirement during fault.As an alternative, can in the first operational mode when couple variations or
Person is changed to 0Nm when motor 2 decoupling quickly by the two limit trqDesEIMMaxRmp and trqDesEIMMinRmp
This mode obtains the most temporal running.
The change of described mechanical couplings and described synchronization such as can be come by transmission control instrument not shown further
Start.Described transmission control instrument such as can select and require one of described possible operational mode.Preferably by motor vehicles control
The most non-loaded property of motor 2 is reported to transmission control instrument by instrument processed so that this transmission control instrument can start into one
The running of step.The change of the end of synchronization mechanical couplings in other words is reported back to described machine by described transmission control instrument
Motor-car controller, this motor vehicles controller the most so triggers described motor 2 so that this motor 2 can undertake again load or
Say and can be that total value is determined moment trqDes and contributed.
Fig. 3 and 4 shows the analog result of the embodiment just explained.At this from the startup clutch 9 of a Guan Bi
Set out with a transmission gear level 10 being fixedly selected.Simulation at the beginning clutch 6 is closed and gear ratio by
This is iEIM=1.Then described machinery coupling is changed by the disconnection of clutch 6 and the Guan Bi of clutch 7 in simulation process
Close, and especially gear ratio is changed to iEIM=2.For whole time range, total rated moment is about trqDes=
70Nm, the most described strategy-rated moment in simulation is about trqDesEIMStrategy=-50Nm, and will pass
Dynamic ratio changes to be adjusted to-25Nm during iEIM=2.
Fig. 3 shows the simulation process of the first operational mode.Described binary signal bShift1 rising edge time
Carving, unconstrained nominal torque trqDesEIMUnLim of described motor 2 is negative.Therefore by limit superior
TrqDesEIMMaxRmp sudden change shape ground arranges 0Nm, and does not affect the first nominal torque trqDesEIM of motor 2.Lower pole
Limit trqDesEIMMinRmp jump to always near motor 2 unconstrained nominal torque trqDesEIMUnLim until
The spacing of 25Nm and then always evolve to 0Nm to ramped shaped.First nominal torque of the most described motor 2
TrqDesEIM is not the most affected by limit inferior trqDesEIMMinRmp.Described torque difference is maintained at about at this
About trqDelta=0Nm.Described synchronization is opened with the rising edge of the signal bSync of described binary when motor 2 is almost without load
Begin.After carrying out synchronizing and changing mechanical couplings, described binary signal bSync=false is set.Then use bShift1=
Load is transferred on motor 2 again by false.During whole, the second rated moment trqDesEng phase of described internal combustion engine 3
As the optimal torque Eng_trqOpt in internal combustion engine 3.The angle of ignition do not intervened at this and also do not carry out spraying blanking.
Signal blARIs and bCtOff of the two binary arranges false during whole simulation.By the present invention with most preferably
Torque Eng_trqOpt run internal combustion engine 3.Previously given total rated moment trqDes is complied with during whole
It is delivered in other words on described transmission input shaft 5 and in view of the gear ratio changed.For the whole simulation in Fig. 3
It is suitable for bShift2=false.
Fig. 4 shows the simulation process of the second operational mode.First nominal torque trqDesEIM of motor 2 is at rising edge
It is switched to trqDesEIM=0Nm bShift2 upper sudden change shape.For the second nominal torque trqDesEng of internal combustion engine 3 with described
Temporarily offer-rated moment trqLeadEng transition downwardly together and leave optimal torque Eng_trqOpt.This causes short
The blanking result that the cylinder of phase is exclusive, it is characterised in that the signal bCtOff=true of described binary, and with blARIs=
True causes the intervention to the angle of ignition of persistent period slightly length.Require to terminate moment impact with bShift2=false at this.At this
Second rated moment trqDesEng of described internal combustion engine 3 followed by optimal torque Eng_trqOpt.Previously given is the most specified
Moment trqDes is complied with during whole.BShift1=false it is suitable for for the whole simulation process in Fig. 4.
In a modification of the present invention scheme, change in these two drive train 2,3 in another kind of operational mode
The mechanical couplings of the first drive train, described another kind of operational mode causes the ratio the in time of these two drive train 2,3
Operating point change and operating point slower than the second operational mode in time that one operational mode is fast change.In this another kind of fortune
In row mode, at least one drive train 2,3 is run with the torque of suboptimum.Described driving machine for optimal torque
Group 2,3 and the most electric accumulator of the assembly attached troops to a unit, catalyst converter, turbocharger are such as consuming, are discharging and use
In the case of life-span is optimal, (No-mistake Principle) runs, and creates restriction at this relative to described optimal torque, such as due to institute
Although stating drive train 2,3 and the assembly attached troops to a unit running in the case of discharge and service life are optimal, but it not to consume
Run in the case of Jia.For being configured to the petrolic internal combustion engine 3 with homogenous combustion characteristic, described time
Good torque can be by being in the power between described basis moment Eng_trqBs and basic moment Eng_trqBsMin of minimum
Square scope presets, say, that still can not have the spray of each cylinder by means of the regulation of the angle of ignition by a kind of
Penetrate blanking and thus the scope that can regulate presets in the case of the waste gas discharge that do not improve.Described time
Good torque such as when zero crossing due to drive the machinery in power train be interrupted in other words gap and in driving power train real
The least for the most patient ballistic kick of comfortableness reason.Owing to the kinesiology of wheel suspension is likely to occur motorcar body
The motion that can aware.But it is that of avoiding the unused steering characteristic voluntarily for driver of motor vehicles.Such as may be used
To be carried out the another kind of operational mode of requirement regulation in other words between first, second and another kind of operational mode by transmission control instrument
Switch over.
Claims (19)
1. for changing the method to the mechanical couplings in dynamical system of the drive train of motor vehicles, the power of described motor vehicles
System is equipped with at least two drive train, and wherein at least the first drive train (2) in these two drive train (2,3) is at machine
The driving process of motor-car is coupled by different mechanical couplings, wherein affects these two when changing described mechanical couplings and drive
The power of motivation group (2,3) or moment, it is characterised in that at least two operational mode, change this two drive train
The mechanical couplings of the first drive train (2) in (2,3), wherein the first operational mode causes these two drive train (2,3)
Operating point change, is then capable of this two drive train (2,3) for the second operational mode the most slowly
The change of operating point the most faster, wherein change in these two drive train (2,3) in another kind of operational mode
The mechanical couplings of the first drive train, described another kind of operational mode cause these two drive train (2,3) in time than
Operating point change that first operational mode is fast and the change of slower than the second operational mode in time operating point, described another
Planting in operational mode, at least one drive train (2,3) is run with the torque of suboptimum.
2. the method as described in claim 1, it is characterised in that the operating point change of these two drive train (2,3) is the most mutual
Carry out on the contrary mutually.
3. the method as described in claim 1 or 2, it is characterised in that with optimal torque in described first operational mode
(Eng_trqOpt) at least one drive train (3) is run, wherein said at least one drive train (3) this optimal
Torque (Eng_trqOpt) is carrying out being considered when torque affects on another drive train (2).
4. the method as described in claim 3, it is characterised in that regulate described according to the power of described drive train (2,3)
Optimal torque (Eng_trqOpt).
5. the method as described in claim 3, it is characterised in that according to drive power train (1) power regulate described most preferably
Torque (Eng_trqOpt).
6. the method as described in claim 3, it is characterised in that regulate described optimal turning according to the power of whole motor vehicles
Square (Eng_trqOpt).
7. the method as described in claim 3, it is characterised in that in the mechanical couplings changing described first drive train (2)
During allow scope (trqDesEIMMaxRmp, trqDesEIMMinRmp) limit drive train (2,3) torque
(trqDesEIM).
8. the method as described in claim 7, it is characterised in that so reduce or expand the scope of described permission
(trqDesEIMMaxRmp, trqDesEIMMinRmp) so that the torque (trqDesEIM) of described drive train (2,3) is without prominent
Become ground evolution.
9. the method as described in claim 1 or 2, it is characterised in that changing described first in described second operational mode
Exceed or be less than the optimal torque of described at least one drive train (3) during the mechanical couplings of drive train (2)
(Eng_trqOpt).
10. the method as described in claim 9, it is characterised in that drive in change described first in described second operational mode
Exceed during the mechanical couplings of motivation group (2) or less than described at least one drive train (3) set in advance always
Rated moment (trqDes).
11. methods as described in claim 1 or 2, it is characterised in that adjusted by rotating speed on described first drive train (2)
Regulating device regulates synchronous rotational speed.
The motor vehicles controller that 12. pairs of at least two drive train trigger, it is characterised in that there is the first device, described
First device regulates the machinery of the first drive train (2) in these two drive train (2,3) at least two operational mode
The change of coupling, wherein the first operational mode causes the operating point the most slowly of these two drive train (2,3) to change,
The change of operating point the most faster of these two drive train (2,3) is then carried out for the second operational mode, its
In in another kind of operational mode, change the mechanical couplings of the first drive train in these two drive train (2,3), described separately
A kind of operational mode cause these two drive train (2,3) operating point change faster than the first operational mode in time and
Operating point change slower than the second operational mode in time, in described another kind of operational mode, at least one drive train
(2,3) are run with the torque of suboptimum.
The 13. motor vehicles controllers as described in claim 12, it is characterised in that described first device receives for regulation first
Or the second operational mode and/or for the requirement signal that switches between first and second operational mode.
The 14. motor vehicles controllers as described in claim 12 or 13, it is characterised in that described first device described first or
Person's the second operational mode is regulating the first or second operation by the triggering of the first second drive train (2,3) in other words
Confirmation signal is sent and in the mechanical couplings change of described first drive train (2) after receiving execution signal after state
And/or in these two drive train (2,3), after synchronizing, cancel again the described first or second running status.
The 15. motor vehicles controllers as described in claim 12 or 13, it is characterised in that described first device described first or
Person's the second operational mode is being adjusted by the triggering of the first second drive train (2,3) in other words in the time interval of definition
Confirmation signal is sent and at described first driving machine after receiving execution signal after joint the first or second running status
The mechanical couplings of group (2) cancels again described first or second after changing and/or synchronizing in these two drive train (2,3)
Running status.
16. for the transmission control instrument of motor vehicles controller as described in claims 14 or 15, and this transmission control instrument is to bag
The variator (4) of the clutch (6,7) including at least one mechanical couplings for switching the first drive train (2) triggers,
It is characterized in that, there is the second device, described second device sends the requirement letter for regulation the first or second operational mode
Number.
The 17. transmission control instrument as described in claim 16, it is characterised in that described second device requires signal along with described
Output is for regulating the persistent period of the definition of the described first or second running status.
The 18. transmission control instrument as described in claim 16 or 17, it is characterised in that described second device receives confirmation letter
Number, the correct regulation of this confirmation signal report the described first or second running status.
The 19. transmission control instrument as described in claim 18, it is characterised in that described second device drives machine described first
The mechanical couplings of group sends execution signal after changing synchronization in other words completely.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010062337A DE102010062337A1 (en) | 2010-12-02 | 2010-12-02 | Method and device for changing the mechanical coupling of a drive unit to a drive train of a motor vehicle whose drive train is equipped with at least two drive units |
| DE102010062337.7 | 2010-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102556052A CN102556052A (en) | 2012-07-11 |
| CN102556052B true CN102556052B (en) | 2016-12-14 |
Family
ID=
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| DE10126348A1 (en) * | 2000-05-31 | 2002-01-24 | Gen Motors Corp | Method and device for active deadening of driving thrust uses a first torque mode in a linked engine generator system and an internal combustion engine, via an automatic shift hand-operated gearbox with a second torque mode |
| US6629026B1 (en) * | 2002-04-12 | 2003-09-30 | Ford Motor Company | Hybrid electric vehicle with motor torque fill in |
| CN101475000A (en) * | 2007-11-04 | 2009-07-08 | 通用汽车环球科技运作公司 | Method to manage a high voltage system in a hybrid powertrain system |
| CN101522496A (en) * | 2006-10-12 | 2009-09-02 | 罗伯特·博世有限公司 | Method for controlling a hybrid drive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10126348A1 (en) * | 2000-05-31 | 2002-01-24 | Gen Motors Corp | Method and device for active deadening of driving thrust uses a first torque mode in a linked engine generator system and an internal combustion engine, via an automatic shift hand-operated gearbox with a second torque mode |
| US6629026B1 (en) * | 2002-04-12 | 2003-09-30 | Ford Motor Company | Hybrid electric vehicle with motor torque fill in |
| CN101522496A (en) * | 2006-10-12 | 2009-09-02 | 罗伯特·博世有限公司 | Method for controlling a hybrid drive |
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