CN104454201B - The method and apparatus adjusted for λ adjusting and the angle of ignition - Google Patents
The method and apparatus adjusted for λ adjusting and the angle of ignition Download PDFInfo
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- CN104454201B CN104454201B CN201410480455.8A CN201410480455A CN104454201B CN 104454201 B CN104454201 B CN 104454201B CN 201410480455 A CN201410480455 A CN 201410480455A CN 104454201 B CN104454201 B CN 104454201B
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- 238000000034 method Methods 0.000 title claims abstract description 67
- 239000000446 fuel Substances 0.000 claims abstract description 47
- 238000002485 combustion reaction Methods 0.000 claims abstract description 40
- 230000008859 change Effects 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000005457 optimization Methods 0.000 claims description 9
- 230000006870 function Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 231100000614 poison Toxicity 0.000 abstract description 4
- 230000007096 poisonous effect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 8
- 230000004913 activation Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 241000208340 Araliaceae Species 0.000 description 3
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 235000008434 ginseng Nutrition 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
- F02D2200/1004—Estimation of the output torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The present invention relates to a kind of methods that λ adjusting for the burning in the internal combustion engine at least one cylinder and the angle of ignition are adjusted, wherein optimal air-fuel ratio or the optimal angle of ignition are determined by following characteristics, the estimated value that can determine torque with this feature and this feature is based on the analysis to speed of crankshaft in internal combustion engine.The control unit of engine that the present invention also proposes corresponding device, especially adjusts unit and storage unit at least one, for implementing the method.It is proposed herein by the present invention, as adjustable parameter, the fuel quantity or the angle of ignition of penetrating change different values from a burn cycle to the next burn cycle directly or indirectly followed and analyze the variation of the feature based on revolving speed for carrying out torque estimation.Especially it can improved efficiency in single cylinder internal combustion engine using the method and device or maximum power or reduce discharge of poisonous waste or can be realized compromise proposal as optimal as possible between all standards.
Description
Technical field
The present invention relates to a kind of λ adjusting for the burning in the internal combustion engine at least one cylinder and angle of ignition tune
The method of section utilizes the feature energy wherein optimal air-fuel ratio or the optimal angle of ignition are determined by following characteristics
It enough determines the estimated value for torque and the feature is based on the analysis to the revolving speed of crankshaft in internal combustion engine.
In addition, the present invention relates to a kind of apparatus for implementing the method, especially control unit of engine.
Background technique
In order to reduce the discharge in the vehicle with petrol engine, set to catalyst converter as waste gas purification usually using 3
It is standby, exhaust gas is just sufficiently only transformed when adjusting air-fuel ratio λ with degree of precision.For this purpose, useless by means of being supported on
Exhaust gas survey meter before gas cleaning equipment measures air-fuel ratio λ.
In the two-wheeled application with the internal combustion engine with cylinder, especially in cheap motorcycle such as moped or
It is had the following problems in trail bike, i.e., often not can be carried out λ adjusting since there is no sensing mechanism or the angle of ignition is adjusted,
As its usually in the vehicle with petrol engine usually and also in regulation about abide by emission regulation defined that
Sample.
Here, for example generally by means of the tune for realizing the corresponding angle of ignition in one or more applications using on vehicle
Section.The angle of ignition obtained used is optimization for the parameter of consumption, discharge, rideability etc..However in batch
In use, engine parameter catastrophic fluctuation with the difference of car relevant to operation.In addition, also in one or identical vehicle
Service life during obtain identifiable fluctuation.For optimal efficiency of combustion and thus also for fuel consumption
For, the phase position of this fixation is needed, i.e., about 8 ° of crankshaft angles are in burning behind the top dead-centre of piston (OT)
Burn in stroke about 50% fuel quantity.If since the fluctuation in fixed crankshaft angles is without abiding by this of burning
Optimal phase position, then especially will appear disadvantage in terms of consumption.
When the different operation phase due to internal combustion engine or when being fluctuated due to the fluctuation in fuel combustion value simultaneously
And when the λ adjusting worked is not provided, when that situation often occurred in application as with the above described is the same, abiding by
It is led to the problem of in terms of emission limit similar.
For PKW(car) application for, it is known that several methods, for example, straying quatity correction, burning position estimation or
Interrupt identification.However the superposition of the influence due to cylinder, consumingly limit analytical plan.
A kind of internal combustion engine for running at least two cylinders is for example disclosed by 10 2,009 002 096 A1 of DE
Method and apparatus, can be with different fuel qualities and/or storage with different mixed with the fuel that is stored in fuel tank
Fuel mixture existing for composition and division in a proportion example is run, and the fuel mixture of wherein different fuel qualities and/or heterogeneity
It is required that for realizing the different air-fuel ratio for stablizing burning and/or with different evaporation characteristics.According to this hair
Bright proposition, it is at least one first cylinder that the fuel quantity for inputting cylinder is peculiar with cylinder institute in the rear startup stage of internal combustion engine
Mode become thin or abundant air fuel mixture and be correspondingly changing at least one second cylinder rich
Thick or thin air fuel mixture.Moreover, it is proposed that the difference of the smoothness of operation with two cylinders of post analysis, wherein dividing
It analyses the influence changed to the difference of the operation uneven stability of two cylinders and therefrom implements the fuel for all cylinders
Matching determines propellant composition.
In two-wheeled application, that is, when application uses the internal combustion engine with only one cylinder in other words, eliminate
The superposition of the influence of multiple cylinders, to more simply analyze the method based on revolving speed.
Applicant it is disclosed not yet with internal file registration number R.343279, R.340722 and R.340723 table
The file shown describes different method and implements the device of these methods, one side describe λ estimation, torque estimation or
Angle of ignition characterisitic family is established, these for especially arranging fuel consumption and harmful substance in the application in front
Put minimum.
R.343279 it describes a kind of method and a kind of suitable device for implementing this method is used to establish for having
The angle of ignition characterisitic family of the internal combustion engine of at least one cylinder, wherein each in engine at regular intervals duplicate operation
Torque for the burning in internal combustion engine is exported from following characteristics, and this feature is based on the analysis to internal combustion engine speed of crankshaft.?
This is proposed, in starting operation point based on the initial value for the angle of ignition, the value of the angle of ignition around initial value according to system change,
And it is charged to the value of the angle of ignition as optimal igniting angle value in characterisitic family, forms maximum in the characterisitic family
Torque.The feature based on revolving speed of torque of the method based on internal combustion engine power in other words provides the on-line optimization of the angle of ignition
Scheme.
Application documents with internal file registration number R.340722 describe a kind of method and for implementing this method
Device be used to estimate the absolute value of torque to burn in the internal combustion engine at least one cylinder, wherein torque is from following characteristics
Middle export, analysis of this feature based on the revolving speed to I. C. engine crankshaft, and wherein from before burning within the scope of at least one it is outstanding
Its compression stage start or before acquire and after being combusted at least one region especially internal combustion engine at least
Combustion phases in one cylinder terminate or the tachometer value that acquires later in calculate the feature.
Concurrent request file with internal file registration number R.340723 describes a kind of method and for implementing this
The device of method is for estimating the air-fuel ratio for burning in the internal combustion engine at least one cylinder, and wherein air fires
Burning rank of the material than at least one cylinder of at least one value and internal combustion engine by revolving speed at least one region of compression stage
It is calculated at least one value of revolving speed at least one region of section.Here, inputting the fuel quantity of internal combustion engine gradually
Variation under implement the calculating of the feature.
Summary of the invention
The task of the present invention is the mentioned-above disclosed files not yet based on applicant, provide as the scheme of expansion
For the method for λ and/or angle of ignition adjusting based on revolving speed, can be improved efficiency, increase power with this method and/or reduced has
The compromise proposal as well as possible being made of these standards is at least realized in the discharge of evil substance.
In addition, the task of the present invention is provide a kind of corresponding apparatus for implementing the method.
Being related to method of the task is resolved by the following method, that is, the fuel quantity or the angle of ignition sprayed into is as adjusting ginseng
Measure from a burn cycle to directly or indirectly for example every n-th of circulation followed by next burn cycle in difference
Value between change, and analyze the variation of the feature based on revolving speed to carrying out torque estimation.Certainly also can alternatively by
Combustion pressure calculated torque valuation, if target vehicle is equipped with combustion chamber pressure sensor.It is recycled to by one another
The variation of a circulation obtains three important advantages.On the one hand for example prevented in fuel charge or rotation speed change and/or
Automatically consider operating point variation, this indicates the interference parameter that the angle of ignition is adjusted and λ is adjusted.On the other hand for torque estimation
The only variation of characteristics of needs, this is conducive to improve relative to the robustness of interference parameter again.Analyze the exhausted of the feature based on revolving speed
Torque valuation is carried out to value to be defective and can change particular according to vehicle.Relative to file R.340722 in
Described measure, the method provide important improvement project.Finally, can be by being recycled to another circulation from one
Variation export direct adjustable parameter, the adjustable parameter is for meeting optimisation criteria.In short, can faster and robustness
Preferably adjust desired optimal state.Relative to for example without using additional sensor, such as oxygen sensor
In the case where purely for pre-control parameter, provide the advantage that in the present inventive method, can be in different standards
Aspect optimizes air-fuel ratio and the angle of ignition.Thus, it is possible to improve efficiency, increase power and/or reduce discharge of poisonous waste or
Person realizes at least one compromise proposal as well as possible being made of these standards.
Because revolving speed and actual air capacity also generate shadow to obtained torque other than λ value and the angle of ignition
It rings, it is important that always relatively more generated for the different angles of ignition or for different λ when operating point keeps identical
The torque of value.Thus, it is proposed that for adjusting for λ based on revolving speed and function (Funktion) use gained of angle of ignition adjusting
To torque and penetrating fuel quantity and thus with λ value and with the angle of ignition or therefrom pass of burning position of centre of gravity acquired
System, wherein determining obtained torsion according to λ value of angle of ignition when nearly constant or according to the angle of ignition of λ value when nearly constant
The variation of square.
It is proposed in preferred method variant schemes, so that adjustable parameter, i.e. straying quatity and the angle of ignition surround regulation respectively
Reference value cyclically change, wherein make adjustable parameter based on the reference value respectively alternately with determining and available
Value changes towards other direction in one direction and then, wherein directly or indirectly followed as adjustable parameter analysis two
Difference in torque between the torque of circulation.The variation of the circulation of the adjustable parameter provides the torque of circulation change, the wherein torsion
Square variation depends on each absolute value reference value in other words of adjustable parameter.
It is proposed in particularly advantageous method variant schemes, executing has difference in torque as adjustable parameter and by leading ginseng
The adjuster being defined into engine control system is measured, will be matched with the adjuster at least partly time according to state adjusted
Value is stored in the characterisitic family of the angle of ignition and/or straying quatity.
This adjusting need not be activated constantly, but can image space method variant schemes setting as, according to operating point and/
Or travel situations be switched on or switched off.
Big changeability in the present inventive method is, previously given for dominating the different of parameter according to target is adjusted
Value.Cooperate different optimization task thus it enables that adjusting, such as pure igniting angle and optimizing, λ adjust that arrive can be previously given
In target λ value or the combined angle of ignition and λ are adjusted.
It is advantageous that for igniting angle and optimizing as adjusting for target, previously given zero difference in torque conduct
Leading parameter.Thus, it is possible to adjust the angle of ignition, wherein generating the maximum torque for being used for this operating point.This igniting as a result,
Angle and optimizing provides the scheme for improving the efficiency of internal combustion engine well.
In order to by λ adjust to can be previously given target value on, can for as adjusting target the previously given difference of λ value
In zero difference in torque as leading parameter, or be based on and other influences parameter such as temperature, air capacity, the angle of ignition or internal combustion engine
Position of centre of gravity the previously given leading parameter different from difference in torque of relationship.Thus, it is possible to adjust determining λ value, such as λ=1.
By it is this adjust strategy can improve not or with it is inoperative or prepare operation oxygen sensor internal combustion
The efficiency and discharge of machine.
Advantageously, alternately being adjusted with alternate leading parameter, as before in the combined angle of ignition and λ are adjusted
It is the same described in face, wherein the reference value of one of adjustable parameter changes to be more than available when due to current adjusting intervention
Limiting value when, the adjusting for terminating to activate just now is intervened and activates corresponding other adjuster, or if is not above pole
When limit value, alternately activates and deactivate according to the logic of regulation.Thus, it is possible to effectively not only optimize λ value and
Thus the efficiency of internal combustion engine, and optimize its discharge of poisonous waste.
It is proposed in another method variant schemes, in the combined angle of ignition adjusting and λ tune for adjusting peak torque
Assume in section the difference in torque for being used as leading parameter be zero or different from zero difference in torque.The latter is when optimizing emission performance
It is advantageous.Maximum power can be realized in previously given throttle valve position by the adjusting strategy, or is also realized
The good compromise proposal being made of power and discharge.
If as preferred method variant schemes proposes in the combined angle of ignition and λ are adjusted, in order to adjust
As adjustable parameter maximal efficiency and use depend on by achievable torque (T) and penetrating fuel quantity (mfuel) constitute
Function y=f(Δ m of gradientfuel/ Δ T), then adjusting can be realized in terms of the smallest unit of fuel consumption.
Particularly preferred method variant schemes proposes, in front described optimization or in the case of adjusting by adjusting
And/or the adjustable parameter of optimization is stored in and is used for such as revolving speed, air capacity and the when necessary characteristic of torque according to operating point
In family of curves, to provide described value when the adjusting for most preferably adjusting internal combustion engine does not activate.
Particularly advantageously, the method variant schemes that setting is adjusted for λ and the angle of ignition is adjusted is in idling of IC engine
Implement.Because there is more constant condition in this operation phase of internal combustion engine, the fast of parameter can be realized herein
Fast and error-free optimization.
The particularly preferred of the method is used as described in front in its different variant schemes, and proposition is having
Carried out in the internal combustion engine for motorcycle for having most cylinders using.There is no the extra cost of additional sensor mechanism, it can
Just in the application field as beginning be previously mentioned usually with strength position the different parameter of pure pre-control is only used only, this
It is brought together in the component of internal combustion engine for realizing as far as possible in the ambient enviroment of variation or due to there is batch control
The shortcomings that high efficiency in other words for reducing discharge of poisonous waste the shortcomings that.Further, since cost reason is often answered this
Additional sensing mechanism is for example abandoned in moped or trail bike in.Correspondingly, in the present inventive method
Apparent improvement can be realized in terms of power ascension and harmful substance reduction.
Being related to device of the task is resolved by the following method, i.e., the described control unit of engine is at least one tune
Unit is saved, method described above can be implemented with the adjusting unit and deposited together with its variant schemes, and at least one
A storage unit especially at least characterisitic family memory, wherein can be stored in relevant to operating point excellent after realization is adjusted
The adjustable parameter of change.Here, control unit of engine can be the integrated of upper engine control device together with its component
Component part.Here, the functionality of adjusting method executes in which can be based at least partially on software wherein.
Detailed description of the invention
The present invention is explained in more detail below according to embodiment shown in the drawings.Attached drawing is shown:
Fig. 1 is the relationship of torque and the angle of ignition,
Fig. 2 is the relationship of torque and λ value,
Fig. 3 is the relationship of torque estimated value and λ value,
Fig. 4 be λ adjust and its influence to opposite fuel quantity,
Fig. 5 be λ adjust and its to instruction average pressure influence,
Fig. 6 is the universal structure for adjusting unit, and
Fig. 7 is curve of the different parameters about the time as the embodiment adjusted by the λ of strategy of the invention.
Specific embodiment
Fig. 1 schematically shows the relationship of torque 11 and the angle of ignition 12 when λ value 13 is constant in curve graph 10.
Torque 11 and λ value 13 when the angle of ignition 12 is constant are schematically shown in another curve graph 10 in Fig. 2
Relationship.
For λ adjust and the angle of ignition adjust, the function based on revolving speed used obtained torque 11(T) with it is corresponding
In the relationship of the position of centre of gravity of thus burning that the fuel quantity and the angle of ignition 12 of the penetrating of λ value 13 obtain in other words.Because removing
Other than λ value 13 and the angle of ignition 12, revolving speed 16(n) and actual air capacity shadow also is generated to obtained torque 11
It rings, accordingly, it is important that the generated torque 11 for the different angle of ignition 12 and/or different λ values 13 is always being run
Point is compared when keeping identical.
The variation of another circulation is recycled to from one by the angle of ignition 12 or λ value 13 or by respectively in different regulations
Value between variation after every n-th of burn cycle can ensure, remain operational and a little constant enough automatically consider in other words
Variation in operating point.
Adjustable parameter, i.e. straying quatity and the thus variation of λ value 13 and the circulation of the angle of ignition 12 surround defined ginseng respectively
Examine value realization.The adjustable parameter is based on the reference value respectively alternately in one direction and then towards other direction to advise
Fixed value is amplitude variation.The variation of the circulation of adjustable parameter provides the torque 11 of cyclical-transformation, and wherein the change in torque takes
Certainly in the corresponding absolute value of adjustable parameter reference value in other words.It is used as adjustable parameter in other words as representational feature, makes
With two elder generations followed by torque 11 between difference and thus use the torque due to caused by the variation of corresponding adjustable parameter
Poor 18(Δ T, referring to Fig. 7).
In order to determine the difference in torque 18, the feature for torque estimated value described in R.340722 is used
Difference.It herein proposes, the torque 14(MWF estimatedimep) as determining for the feature due to combustion process work done.
MWF represents " mechanical work feature " herein.The torque 14(MWF of estimationimep) torque estimated by revolving speed 16 is represented herein, and
Imep(English) or pmi(German) represent instruction average pressure 25.The torque 14(MWF estimatedimep) herein directly with finger
Show that average value 25 is related, as equally described in R.340722.It herein proposes, makes to calculate the feature respectively
At least at least one first value of the revolving speed of at least one first angle adjustment region from crankshaft and from crankshaft
At least one second value of the revolving speed of one second angle adjustment region, wherein at least the first of the crankshaft and at least second jiao
The angular adjustment spent in the top dead-centre (OT) that adjustable range is in intermediate about piston is symmetrical.Particularly advantageously,
Use the torque 14(MWF of estimationimep), which is calculated by 180 ° of energy difference before 180 ° and OT after OT
It obtains.
Described method and, for example, λ value 13 are graphically shown in another curve graph 10 in figures 3,4 and 5
Relationship.The torque 14(MWF of estimation is shown in FIG. 3imep) according to the curve of λ value 13.Here, showing around for opposite
The reference value 21(rK of fuel quantityref) representational variation 24, wherein opposite fuel quantity 20(rK) according to recurring number 19 around using
In the reference value 21(rK of opposite fuel quantityref) in the maximum value 22(rK for opposite fuel quantityodd) and for opposite fuel quantity
Minimum value 23(rKeven) between change, as its curve in Fig. 4 is shown in Fig. 10.Here, representational variation
24 typically in rKodd=110%rKrefAnd rKeven=90%rKrefBoundary in realize.Phase is shown in curve graph 10 in Fig. 5
To fuel quantity 20(rK) according to the variation of recurring number 19 to instruction average pressure 25(imep or pmi) influence.
Using as the difference in torque 18(Δ T of adjustable parameter) or described side can be passed through to the definition of leading parameter
Method particularly simple executes adjuster, and representational difference in torque 18 can be adjusted by the adjuster.For this purpose, this adjusting need not
Constantly activate, but according to operating point and/or travel situations on and off.According to the state of adjusting, matching value is protected
It is suitable for can be realized matching using the characterisitic family in the angle of ignition 12 and/or the characterisitic family sprayed into be stored to,
And do not have to that the adjusting is kept constantly to activate.
It adjusts strategy and possible adjusting target and its achievable purposes is illustrated in detail below.
In addition, Fig. 6 schematically depicts the universal structure of adjuster in adjusting Figure 30, as it is by present invention difference
As being adjusted for angle of ignition adjusting and λ.A kind of adjuster is shown, wherein when the entrance side of adjuster is by depending on
Between leading parameter 31w(t)Obtain the 38 Δ T of difference in torque of the circulation of estimation(t)And by thus obtained adjusting deviation 32e(t)
Input regulator unit 42 and the probe unit of the rated condition adjusted for identification 48.Output as conditioner unit 42
Signal provides adjuster with reference to adjustable parameter 34uR(t), the adjuster is with reference to adjustable parameter one side input for according to operation
Point stores to be closed in the memory cell 49 of optimal adjustable parameter and on the other hand with from the signal node for generating unit 43
Change and thus generate the adjustable parameter 35u of circulation change to generate the adjustable parameter of circulation in addition unitZ(t).Swashing
Adjustable parameter 33u(t is generated by the signal in unit 44 living).Hair is on the one hand exported by the regulating system 45 determined by vehicle
Motivation revolving speed 39nMot(t)And on the other hand also export 40 φ of throttle angleThrottle(t)And the air capacity of estimation
41mAir(t), will be in these calculated input store units 49.Described value is also fed back in activation unit 44.Furthermore it is possible to
The adjustable parameter 36u relevant to operating point of activation unit 44 being stored in memory cell 49 is connected in entrance sideS(t).?
By high-resolution engine speed 39n in evaluation unit 46Mot(t)Export the torque 37T of estimation(t), the torque on the one hand input
Memory cell 49 and the 38 Δ T(t of difference in torque on the other hand inputting circulation of the computing unit 47 for calculating estimation).
Determining that travel situations are appropriate for adjust by logic device for activating in the unit adjusted (activation unit 44)
It saves the angle of ignition 12 and/or adjusts λ value 13.If deactivating the adjusting, stop activation simultaneously in conditioner unit 42
And adjustable parameter is obtained from memory cell 49 respectively, is adjustable parameter 36u relevant to operating point hereinS(t).Can
It is configured in the memory cell 49 of characterisitic family memory the value that can also be saved from first time application or also can
Save best or adjusting value also mentioned above.It can be by analyzing which kind of degree is rated condition adjusted be in
Carry out the preservation of influence value, this analysis is realized in probe unit 48.According to target is adjusted, to dominate parameter 31w(t)It gives in advance
Fixed different value.Possible adjusting target is described below.
Following adjusting target is distinguished herein:
● igniting angle and optimizing,
● λ is adjusted onto defined target value, and
● the combined angle of ignition is adjusted and λ is adjusted, and has following variation scheme
It adjusts onto peak torque
It adjusts onto the consumption of the smallest unit of fuel
It adjusts onto the compromise proposal as well as possible being made of power, oil consumption and discharge.
In pure igniting angle and optimizing, change the angle of ignition 12 only periodically.Providing leading parameter 31w(t)For
Difference in torque=0 0() when, the angle of ignition 12 is so adjusted in this operating point with peak torque 11.If by adjust intervene, also if
Be that adjustment adjustable parameter changes operating point in reference ignition angle in other words, then the variation of this operating point be it is noncritical, because
To will appear more stable point.Knock limits (Klopfgrenz) is had to comply with certainly in this igniting angle and optimizing.In accordance with this
The scheme of kind of boundary is illustrated in R.343279.In short, described angle of ignition prioritization scheme provides very
The good scheme for raising efficiency.
In pure λ is adjusted or mixing is adjusted, the amount of being sparged into only cyclically changes only around reference value.By in Fig. 3
Shown in the representational curve of λ efficiency curve can pass through the previously given different representational torsion of described adjusting method
Square difference.The regulation of peak torque for example has 0 value in igniting angle and optimizing.According to other influences parameter such as temperature, air
The position of centre of gravity (MFB50%) of amount, the angle of ignition 12 or burning can also provide other leading parameter 31w(t), to adjust the rule of λ
Fixed value, such as λ=1.It can improve by the way that so achievable adjustings is tactful not or with working and/or
The efficiency and discharge of the vehicle of the oxygen sensor of operation.Here, the adjustable parameter 33u(t)It is straying quatity.
Method described above is alternately carried out in the combined angle of ignition is adjusted and λ is adjusted.If due to adjusting
Intervene, the adjustable parameter 33u(t)One of reference value change to obtain over-limit condition, then terminate adjust intervene and activate phase
Answer other adjusters.If being not above limiting value, alternately activates and deactivate according to determining logic device.
The method variant schemes for the combined regulation scheme being made of the angle of ignition 12 and λ value 13 is to adjust maximum torque
11.For the angle of ignition 12, and for λ value 13, the leading parameter 31w(t)It is consequently equal to 0.As substitution
Scheme, such as also can be advantageously, it is specified that any others difference in torque for discharge reason.Pass through tactful (Ansatz)
It can realize that maximum power realizes power and the good folding that discharge is constituted in other words in previously given throttle valve adjustment
Inner feelings scheme.Such as in pure igniting angle and optimizing, knock limits are also had to comply with herein.
The another method variant schemes for the combined regulation scheme being made of the angle of ignition 12 and λ value 13, which can be adjusted out, to the greatest extent may be used
The high efficiency of energy.Here, as adjustable parameter y, the calculating according to unit of fuel consumption herein, according to following relationship by institute
The difference in torque 11T of the acquisition and fuel quantity m of penetratingfuelThe variation of the function of composition is adjusted for λ,
,
The optimization of the angle of ignition 12 is similar to pure igniting angle and optimizing to realize.
Fig. 7 is shown in the internal combustion engine operation of not oxygen sensor in another curve graph 10 by λ tune of the invention
The illustrative result of section.Difference in torque 18, the modifying factor 17 as unit of Nm are shown according to the time 15 of the curve of λ value 13
And revolving speed 16.Following result is marked in the upper surface of curve graph 10 part: being recycled to the activation 26 of circulation change, with reference to spray
Enter rising corresponding negative mutation 27, the matched activation 28 of λ with λ value 13, declining phase with λ value 13 with reference in straying quatity in amount
Duplicate negative and positive mutation 27,29 in corresponding direct mutation 29 and reference straying quatity.It is shown therein that can be corresponding
Ground is detuning later by adjusting target value in the present inventive method in being provoked for air fuel mixture.
Exist in the optimization and adjusting situation being described by the adjustable parameter 33u adjusted optimized in other words(t)
It is stored in the scheme thus stored in characterisitic family relevant to operating point and at subsequent time point, the characteristic
Family of curves is by revolving speed 16, air capacity and when necessary torque 11 is unfolded.
Can particularly advantageously, method described above is implemented in internal combustion engine operation with its variant schemes, because
It is particularly present relative constant condition herein.
The method is particularly advantageous for the engine with only one or two cylinders, because herein not
In the presence of the superposition only having in 2 cylinder engines in other words as caused by the process in each cylinder to the superposition of revolving speed slightly.
Also it can be considered that being similar to the adjustable parameter 33u that described method changes cyclically each cylinder in multiple cylinder engine
(t).However the adjustable parameter 33u(t that can also change in alternative embodiments between each cylinder that replaces).
Claims (16)
- The method that 1. λ for the burning in the internal combustion engine at least one cylinder is adjusted and the angle of ignition is adjusted, wherein most Good air-fuel ratio or the optimal angle of ignition (12) is determined by following characteristics, can determine torque (11) using the feature Estimated value and the feature based on the analysis to the revolving speed of crankshaft in internal combustion engine, which is characterized in that as adjustable parameter (33), the fuel quantity or the angle of ignition (12) of penetrating are followed from a burn cycle to the next burning directly or indirectly followed Ring changes between different values and analyzes the variation of the feature based on revolving speed for carrying out torque estimation.
- 2. method according to claim 1, which is characterized in that for for λ adjust and the angle of ignition adjust, be based on revolving speed Function for, relationship and the thus pass with λ value (13) using obtained torque (11) and the fuel quantity of the penetrating System and with the angle of ignition (12) or it is resulting burning position of centre of gravity relationship, wherein in the angle of ignition (12) The variation of obtained torque, or the root when the λ value (13) is nearly constant are determined when nearly constant according to the λ value (13) The variation of obtained torque is determined according to the angle of ignition (12).
- 3. method as described in claim 1 or 2, which is characterized in that implement the adjustable parameter (33), i.e. straying quatity and igniting Angle (12) surrounds the circulation change of defined reference value respectively, wherein making the adjustable parameter (33) based on the reference value point Do not changed in one direction and then towards other direction with defined and available value for amplitude alternately, wherein as adjusting Save parameter, analysis two directly or indirectly first followed by circulation torque (11) between difference in torque (18).
- 4. method according to claim 3, which is characterized in that executing has as the difference in torque (18) of adjustable parameter and right The adjuster of the definition of leading parameter (31), protects matching value according to the state of adjusting by the adjuster at least partly time In the presence of in the characterisitic family for the angle of ignition (12) and/or the straying quatity.
- 5. method according to claim 4, which is characterized in that connect or disconnect institute according to operating point and/or travel situations State adjuster.
- 6. method according to claim 4, which is characterized in that according to adjusting, target is previously given to be used for the leading parameter (31) different values.
- 7. method according to claim 6, which is characterized in that previously given to be as adjusting target for angle and optimizing of lighting a fire Zero difference in torque is as leading parameter.
- 8. method according to claim 6, which is characterized in that as target is adjusted in order to adjust λ to being used for λ value (13) It is previously given to be different from zero difference in torque (18) conduct leading parameter (31) or different from institute in target value that can be previously given State the leading parameter (31) of difference in torque (18).
- 9. by method described in any one of claim 6 to 8, which is characterized in that for combined angle of ignition adjusting and λ tune Section, implementation is adjusted with alternate leading parameter (31) as described in claim 7 or 8, alternate, wherein when due to current Adjusting intervention so that the reference value of one of described adjustable parameter (33) changes beyond available limiting value when, end swashed just now Adjusting living is intervened and activates corresponding other adjuster, or if being not above limiting value, according to the logic of regulation It alternately activates and deactivates.
- 10. method according to claim 9, which is characterized in that in the angle of ignition for adjusting peak torque (11), combination Adjust and during λ adjusts, will act as leading parameter (31) difference in torque (18) be assumed to zero or different from zero difference in torque (18).
- 11. method according to claim 9, which is characterized in that in the combined angle of ignition is adjusted and λ is adjusted, in order to adjust The maximal efficiency as adjustable parameter is saved, it is related using the gradient constituted to by achievable torque (11) and the fuel quantity sprayed into Function.
- 12. method as described in claim 1 or 2, which is characterized in that will be adjusted when optimizing situation or adjusting And/or the adjustable parameter (33) of optimization is stored in characterisitic family relevant to operating point.
- 13. method as described in claim 1 or 2, which is characterized in that in idling of IC engine implement setting for λ adjust with And the method variant schemes that the angle of ignition is adjusted.
- 14. by the purposes of method described in any one of claims 1 to 13, used in the motorcycle for being up to a cylinder In internal combustion engine.
- 15. the device that the λ for the burning in the internal combustion engine at least one cylinder is adjusted and the angle of ignition is adjusted, hollow Gas fuel ratio or the angle of ignition (12) can be determined by means of control unit of engine by following characteristics, can using the feature It determines the estimated value for torque (11) and the feature is based on the analysis to the revolving speed of crankshaft in internal combustion engine, feature exists In the control unit of engine, which has, adjusts unit (42), can be implemented using the adjusting unit by claims 1 to 13 The method, and the control unit of engine has at least one storage unit (49), the energy in the storage unit Enough storage optimal adjustable parameters relevant to operating point after realizing adjusting.
- 16. device according to claim 15, which is characterized in that the storage unit is characterisitic family memory.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013218903.6 | 2013-09-20 | ||
| DE201310218903 DE102013218903A1 (en) | 2013-09-20 | 2013-09-20 | Method and device for lambda and ignition angle control |
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| Publication Number | Publication Date |
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| CN104454201A CN104454201A (en) | 2015-03-25 |
| CN104454201B true CN104454201B (en) | 2019-05-31 |
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|---|---|
| CN (1) | CN104454201B (en) |
| DE (1) | DE102013218903A1 (en) |
| IN (1) | IN2014DE02236A (en) |
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| CN106438069B (en) * | 2016-08-24 | 2019-02-15 | 中国第一汽车股份有限公司 | A kind of lean burn natural gas engine torque estimation method |
| DE102018210336A1 (en) * | 2018-06-25 | 2019-04-11 | Continental Automotive Gmbh | Method for operating an internal combustion engine with optimization of the injection and / or ignition timing and internal combustion engine |
| DE102020205452B4 (en) | 2019-04-29 | 2023-01-26 | Prüfrex engineering e motion gmbh & co. kg | Method of operating an internal combustion engine |
| CN114876656B (en) * | 2022-04-18 | 2023-04-25 | 东风柳州汽车有限公司 | Control method, device, equipment and storage medium for improving power shortage |
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| DE19858014A1 (en) * | 1998-12-16 | 2000-06-21 | Bosch Gmbh Robert | Fuel injection system for IC engines has a facility to increase amount during cold start conditions |
| DE102009002096A1 (en) * | 2009-04-01 | 2010-10-07 | Robert Bosch Gmbh | Internal-combustion engine e.g. petrol-driven internal-combustion engine, operating method, involves evaluating influence of variation in difference of irregular variations of cylinders, and determining fuel composition |
| CN102128094A (en) * | 2010-01-15 | 2011-07-20 | 福特环球技术公司 | Method and device for setting air-fuel ratio in exhaust of internal combustion engine |
| CN103225554A (en) * | 2013-04-25 | 2013-07-31 | 天津大学 | Self-learning control method capable of realizing constant torque of lean-burn petrol engine provided with NOx adsorption and reduction catalytic converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0742887B2 (en) * | 1985-01-30 | 1995-05-15 | マツダ株式会社 | Engine combustion control device |
| JPH1150889A (en) * | 1997-08-04 | 1999-02-23 | Nissan Motor Co Ltd | Control device for engine |
| JP2005155482A (en) * | 2003-11-26 | 2005-06-16 | Honda Motor Co Ltd | Fuel injection control device of cylinder injection internal combustion engine |
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2013
- 2013-09-20 DE DE201310218903 patent/DE102013218903A1/en active Pending
-
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- 2014-08-06 IN IN2236DE2014 patent/IN2014DE02236A/en unknown
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858014A1 (en) * | 1998-12-16 | 2000-06-21 | Bosch Gmbh Robert | Fuel injection system for IC engines has a facility to increase amount during cold start conditions |
| DE102009002096A1 (en) * | 2009-04-01 | 2010-10-07 | Robert Bosch Gmbh | Internal-combustion engine e.g. petrol-driven internal-combustion engine, operating method, involves evaluating influence of variation in difference of irregular variations of cylinders, and determining fuel composition |
| CN102128094A (en) * | 2010-01-15 | 2011-07-20 | 福特环球技术公司 | Method and device for setting air-fuel ratio in exhaust of internal combustion engine |
| CN103225554A (en) * | 2013-04-25 | 2013-07-31 | 天津大学 | Self-learning control method capable of realizing constant torque of lean-burn petrol engine provided with NOx adsorption and reduction catalytic converter |
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| IN2014DE02236A (en) | 2015-06-19 |
| CN104454201A (en) | 2015-03-25 |
| DE102013218903A1 (en) | 2015-03-26 |
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