CN102828844B - Method and apparatus for adjusting operation stability of internal combustion engine - Google Patents
Method and apparatus for adjusting operation stability of internal combustion engine Download PDFInfo
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- CN102828844B CN102828844B CN201210200520.8A CN201210200520A CN102828844B CN 102828844 B CN102828844 B CN 102828844B CN 201210200520 A CN201210200520 A CN 201210200520A CN 102828844 B CN102828844 B CN 102828844B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 66
- 239000000446 fuel Substances 0.000 claims description 28
- 239000000523 sample Substances 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000001568 sexual effect Effects 0.000 description 11
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000011218 segmentation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
- F02D2041/288—Interface circuits comprising means for signal processing for performing a transformation into the frequency domain, e.g. Fourier transformation
-
- 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
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
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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 provides a method which allows adjustments for a very low-frequency operation instability mode of an internal combustion engine and thereby obviously improves operation characteristics of the internal combustion engine.
Description
Technical field
The present invention relates to be used for the method and apparatus being adjusted to the smoothness of operation of internal combustion engine.
Background technology
For the internal combustion engine such as diesel engine with direct-injection and gasoline engine of direct-injection, each cylinder possesses the spray of oneself
Emitter, the ejector is injected fuel in the combustor for belonging to the cylinder.These ejectors make in large quantity and by
There is tolerance in manufacture reason, the tolerance causes this point, although that is, identical triggering also sprays different fuel quantities
To in different combustor.
This results in situations below, i.e., the different cylinder of described internal combustion engine is although identical triggering also exports different turning
Square, so as to cause uneven electromotor to operate.Additionally, the discharge performance of internal combustion engine can be deteriorated.Therefore know to implement to operate and put down
Stability regulation method, to gas on the basis of the fluctuation of speed of the smoothness of operation control method in the cycle of operation of internal combustion engine
The difference of the fuel quantity for being sprayed between cylinder is adjusted.Embodiment for such smoothness of operation control method is DE
195 27 218 B4, here is with reference to the patent document.
If repeating the error mode fluctuation of speed in other words within cycle of operation, then for this smooth running
The change of the torque ripple within cycle of operation and the rotating speed of the bent axle for therefrom producing can be carried out for property control method
Compensation.As cycle of operation, the order of all working stroke of internal combustion engine is referred to reference to the present invention.One cycle of operation（AS）
Crankshaft angles when internal combustion engine works according to four-stroke cycle equivalent to 720 °（KWW）And in internal combustion engine according to two-stroke cycle
Crankshaft angles during work equivalent to 360 °（KWW）.
Using smoothness of operation control method above-mentioned, it is impossible to affecting in more than one duty cycle range
The effect of smoothness of operation be adjusted.Such effect is not caused by the tolerance by ejector, but by internal combustion engine
Other components or standard package caused by.It is such as 3 Cylinder engines without balance shaft or high in fuel
Such effect just occurs for unfavorable gear ratio between press pump and bent axle.
The high-pressure fuel pump of said internal combustion engine can apply two kinds of torques to be affected：High-pressure fuel pump described first is in pump
Directly there is torque-demand in the fuel feeding stroke of element.This causes situations below, i.e., in the fuel feeding stroke of the high-pressure fuel pump
In less on the bent axle of internal combustion engine power it is available.Therefore the rotating speed of bent axle declines.
Secondly, the fuel feeding stroke of the high-pressure fuel pump causes pressure vibration in pressure accumulating tube below is arranged in, described
Pressure vibration is decayed with the time.It means that the pressure in the pressure accumulating tube is in time and non-constant, thus pressure accumulating tube
Pressure is different in the time for spraying of different ejectors.Thus, although injection duration is identical still to spray different combustions
Doses so that the torque of different cylinders is produced and differed.
Additionally, the compressor of other auxiliary unit such as air-conditionings of internal combustion engine can also cause the torque ripple of bent axle or turn
Speed fluctuation.If the cycle of the fluctuation of speed extends in the range of multiple cycle of operation, then the fluctuation of speed just allows motor vehicles
User feels very uncomfortable, because this is related to the fluctuation of low frequency.Additionally, the quality of combustion process is subject to bad shadow
Ring.
The content of the invention
By the present invention for being capable of identify that the method that the smoothness of operation of internal combustion engine is adjusted in many of internal combustion engine
In the range of individual cycle of operation extend the fluctuation of speed pattern and by the range of multiple cycle of operation of internal combustion engine
The pattern of the fluctuation of speed is eliminated to the compensation of the emitted dose of cylinder.Thus the smoothness of operation and car of internal combustion engine are improved
The comfortableness of interior occupant is felt.
Specify for this by the present invention, the smoothness of operation of the internal combustion engine carries out cylinder institute by the fuel quantity to being sprayed
Exclusive adjustment adjusting, wherein smoothness of operation is adjusted at least two duty cycle ranges of internal combustion engine and
Single actuator is assigned with for each cylinder for each cycle of operation.
It is described in the present inventive method thus such as the rotating speed extended in two duty cycle ranges of internal combustion engine
It is that the first cylinder of the internal combustion engine is matched somebody with somebody in the first cycle of operation when service condition is generally identical for the pattern of fluctuation
Give different fuel quantities in the second cycle of operation.This control can implement each cylinder and each work for internal combustion engine
Circulate.Therefore such as the mould of the galloping extended with six cylinders and in three duty cycle ranges
It is that 6 ejectors altogether of internal combustion engine are provided with 3*6 actuator for the internal combustion engine of formula（Use literal expression：18 regulations
Device）.
Thus the galloping pattern of very low frequency can also be compensated and thus extremely efficient to conduct
Feel that very uncomfortable and noisy galloping pattern is compensated.Thus significantly improve with coming in the present inventive method
The smoothness of operation of the internal combustion engine of operation.
Specify in a kind of favourable design of the present invention, speed probe provides high-resolution turn of internal combustion engine
Fast signal, from this tach signal for internal combustion engine each cylinder be the first cycle of operation distribute the first adjusting deviation, first
Group actuator regulated value according to specific to the previously given cylinder of first adjusting deviation, is internal combustion from the tach signal
Each cylinder of machine is that the second cycle of operation distributes the second adjusting deviation and second group of actuator adjusts inclined according to described second
Difference carrys out numerical value specific to previously given cylinder.Certainly these actuators are obtained generally by means of software in engine controller
Realize.
Individually the cylinder of the internal combustion engine is adjusted in the first cycle of operation and in the second cycle of operation,
It is possible thereby to the galloping sexual norm to extending in the range of two cycle of operation is compensated.It is this by the present invention
Processing mode can also be used in those gallopings extended in the range of three or more cycle of operation certainly
In pattern.Number and the number of cycle of operation then corresponding to cylinder will also add multiple actuators.Such as having
For the internal combustion engine of six cylinders and the galloping sexual norm that extends in the range of three cycle of operation, need altogether
18 actuators.It is possible thereby to each cylinder for internal combustion engine and be individually adjusted in each cycle of operation or
Say control.
Have confirmed advantageously, when the rotating speed of internal combustion engine is relatively low using described in the present inventive method, because these
Galloping sexual norm especially has interference when rotating speed is relatively low.As reference value, it was demonstrated that advantageously, in rotating speed less than double
Idler revolutions when using it is described in the present inventive method.On this rotating speed, again can not for vehicle passenger
Feel these galloping sexual norms, thus the regulation to these galloping sexual norms can be abandoned.
In order to recognize the galloping sexual norm extended in the range of more than one cycle of operation, here rule
It is fixed, by the filter of preferred band filter, discrete Fourier transform and its inverse transformation and/or operating in time range
The assessment of unstable item is processing tach signal.
Band filter mainly allows its so-called intermediate frequency to pass through and prevent other frequencies.It is necessary when applying every time
Redefine the intermediate frequency being adapted for carrying out in the present inventive method of the band filter.The intermediate frequency such as depends on internal combustion
The number of cylinders of machine and depending on the gear ratio with regard to speed of crankshaft of high-pressure fuel pump.
It is frequently advantageous that, so gives the parameter of the band filter used when implementing in the present inventive method, makes
Obtaining the following frequency component of rotation angle sensor can pass through the band filter.
Identical with crank frequency or lower than it frequency.Typically at least need the frequency of level time 1（Equivalent to internal combustion engine
Rotating speed）With the frequency of level time 0.5（Equivalent to the rotating speed of camshaft）.
Because if the rotating speed of internal combustion engine more than previously given ultimate value and also implement when rotating speed is higher such as from
It is described to be stopped in the present inventive method if traditional smoothness of operation control method disclosed in the B4 of DE 195 27 218
With so advantageously, in the following manner from traditional smoothness of operation control method is changed in the present inventive method, i.e.,
The meansigma methodss of all actuators for distributing to a cylinder distribute to corresponding actuator and/or will be described for the first cycle of operation
The amplification of the parameter of filter especially band filter is arranged to zero.Contrary approach is namely from the operation in internal combustion engine
Traditional smoothness of operation control method when rotating speed is higher to when the rotating speed of internal combustion engine is relatively low in the present inventive method
Transformation is carried out advantageous by the following manner, i.e., all actuators for distributing to a cylinder are corresponding with the first cycle of operation
Current numerical value arrive to initialize and/or arrange the amplification of the especially described band filter of the parameter of the filter
The numerical value applied.
Being initially mentioned for task is resolved again by the device for being used to be adjusted the smoothness of operation of internal combustion engine,
The device includes multiple actuators for carrying out the exclusive triggering of cylinder to the ejector of internal combustion engine, wherein the actuator
Number at least equal to the product being made up of the number of cylinder and the number of cycle of operation, wherein the galloping sexual norm
Extend in the range of the cycle of operation.In order to the internal combustion engine also can also be with traditional operating when running speed is higher
Stationarity control method carrys out work, by present invention provide that, be also extraly provided with one group for adjust a cycle of operation fortune
Turn the actuator of stationarity.The traditional smoothness of operation control method carried out in the range of a cycle of operation is thus always
Can work.
The further advantage and favourable design of the present invention can be obtained from the following drawings, its explanation and claim
Know.
All features described in accompanying drawing, its explanation and claim can be not only individually and to each other
It is all critically important for purposes of the invention in combination in any.
Description of the drawings
Accompanying drawing is shown below：
Fig. 1 is the rotating speed of the internal combustion engine in time range in three cycle of operation；
Fig. 2 is the effect chain of the regulation in frequency range by the present invention；
Fig. 3 is to be provided for implementing controller structure in the present inventive method；And
Fig. 4 is used in by the smoothness of operation control method of the present invention together with the smoothness of operation regulation side by prior art
Controller structure in method.
Specific embodiment
It is exemplarily in FIG the internal combustion engine with six cylinders and ignition order 153624 with regard to spending
The crankshaft angles [KWW] of meter depict igniting top dead centre.
It is on the vertical scale the first cycle of operation AS1, the second cycle of operation AS2 and the 3rd in the lower section of this first chart
Cycle of operation AS3 depicts the actual speed n of internal combustion engineist.As the dotted line for marking, rated speed n is depictedsoll.Fig. 1 by
This is the schematic diagram drawn in time range.
If being such as now the cylinder 5 for possessing its igniting top dead centre when crank shaft angle is 120 ° in cycle of operation AS1
Actual speed is compared with rated speed, that just clearly finds, the bent axle of the internal combustion engine must have at this moment turn
It is a little too fast.Thus the adjusting deviation for being referred to as L5.1 in FIG is produced in the first cycle of operation AS1 for the cylinder 5.
Corresponding situation is suitable for the adjusting deviation L3.1 that produces when crank shaft angle is 240 ° the first cycle of operation.For described
For one cycle of operation AS1, it now is possible to for each crank shaft angle corresponding with the driving stroke of one of cylinder Z1 to the Z6
Degree determines adjusting deviation L.
It is described to adjust inclined just as seeing from the research to the speed curves during the first cycle of operation AS1
Difference is above or below rated speed n by the current actual speed of the internal combustion enginesollIt may is that it is positive or
Person is negative.
If the internal combustion engine has finished on the first cycle of operation AS1 and the bent axle has turned 720 ° of angle
Degree, that begins to the second cycle of operation AS2, and second cycle of operation AS2 is in FIG under first cycle of operation AS1
Side draws.Here each cylinder that also can be the internal combustion engine is in other words that each of which work igniting top dead centre reading is current
Adjusting deviation.In the example of cylinder 5, this adjusting deviation is represented for the second cycle of operation with L5.2.
Corresponding situation is also applied for the adjusting deviation in the second cycle of operation of other cylinders.For simple and clear original
Cause, is not drawn into all adjusting deviations occurred in second and third cycle of operation AS2, AS3.
At the end of second cycle of operation AS2 that is when there is the igniting top dead centre of the cylinder 4 and 1,
Rotating speed is equal to rated speed, so as to there is not adjusting deviation.This state should in the embodiment illustrated in figure 1 also the 3rd
In cycle of operation AS3 continue, until just shortly before the igniting top dead centre of the first cylinder at the end of the 3rd cycle of operation again
There is adjusting deviation L1.1.There is the periodic hypothesis being made up of three cycle of operation in the galloping sexual norm
Under, this adjusting deviation L1.1 is equivalent to the regulation that the top exists in the first cycle of operation AS1 when crankshaft angles are 0 °
Deviation.
Can understand from a general chart of adjusting deviation L5.1 to the L1.3 in cycle of operation AS1, AS2 and AS3
Ground sees, must carry out different touching to each cylinder in the cylinder 1 to 6 in each cycle of operation AS1 to AS3
Send out, for the galloping sexual norm that the periodicity to be made up of three cycle of operation occurs can be adjusted.
Therefore, the cylinder 5 must export relatively low torque in the first cycle of operation, so as to the hypervelocity to internal combustion engine
（nist＞ nsoll）Compensate.In the second cycle of operation, rotating speed stops in the igniting of cylinder 5 in selected embodiment
Corresponding situation at point also greater than in the first cycle of operation, need exist to entering one for cylinder 5 in the second cycle of operation AS2
Step reduces sprayed fuel quantity.In the 3rd cycle of operation AS3, internal combustion engine just has at the igniting top dead centre of the 5th cylinder
There is rated speed, so as to occur without adjusting deviation.Therefore the actuator 5.3 belonging to need not be compensated.
Fig. 2 schematically show in frequency range in the present inventive method effect chain together with traditional smooth running
Property control method.
In a block diagram, the internal combustion engine and PWTN are provided with reference 101.Do in other words as input parameter
The amount of disturbing, the fuel quantity for being sprayed（Emitted dose）Represented by arrow 103.
In the top of the arrow 103, as the parameter of numeral（Referring to reference 104）Schematically show for
The emitted dose error of each cylinder of the internal combustion engine.
In the embodiment of shown four-cylinder internal combustion engine, the emitted dose error for cylinder 1 has numerical value -2, for gas
The correcting value of cylinder 2 has numerical value+1, and the correcting value for cylinder 3 has numerical value 0 and the correcting value for cylinder 4 has numerical value
+1。
The output parameter of internal combustion engine 101 is speed of crankshaft n, and the speed of crankshaft n is by high-resolution rotation angle sensor
（It is not shown）Come detect and be smoothness of operation governor motion LRR input parameter.The smoothness of operation governor motion LRR
Mainly include two components, that is, band filter 105 and actuator R.Further below will be with reference to Fig. 3 and 4 pair of band logical filter
Ripple device 105 and actuator R are explained in detail.
In the top of the arrow n of the rotating speed that represent internal combustion engine 101, turning for generation is graphically shown
Speed.
The output parameter of the smoothness of operation governor motion LRR is the correcting value 107 of the fuel for having to be sprayed.For described
Four cylinders 1,2,3 each cylinder in other words in 4 individually correcting value 107 described in dispensing.The correcting value is missed as emitted dose
Difference is equally also the parameter of numeral, and the parameter of the numeral is under normal conditions different for each cylinder.
It is schematic in the top of arrow 107 in fig. 2 for the exclusive correcting value of the cylinder of the cylinder of the internal combustion engine
Illustrate.So determine the exclusive correcting value of the cylinder for cylinder so that its emitted dose error to the cylinder
Compensate.
Here is it should be considered that existing in time in tach signal n and fuel quantity in one of described cylinder 1 to 4
Phase shift is there is between the injection carried out before this.This phase shift is selected by so-called segmentation（Segmentwahl）Come
Compensation.It means that the currency of the tach signal of the bent axle is distributed to into corresponding cylinder, the cylinder is just not long ago
It is ignited and exported and have causal torque for the current rotating speed of bent axle.By being referred to as being segmented selection
Compensation, the compensation is the compensation to the phase shift between the fuel injection in tach signal and in the cylinder of internal combustion engine, can
It is as follows to realize, i.e., by PI specific to cylinder（Proportional integral）The correction intervention carried out on actuator comes extremely efficient
The smoothness of operation of internal combustion engine is adjusted and thus improved to the rotating speed deviation.
Tach signal is decomposed into for smooth running by the band filter of suitable given parameters for this
Property adjust for important frequency component.This can be carried out by means of Fourier analyses.
In the embodiment illustrated, the correcting value 107 that thus be accordingly used in cylinder 1 has numerical value+2, for the correction of cylinder 2
Measurer has numerical value -1, and the correcting value for cylinder 3 has numerical value 0, and the correcting value for cylinder 4 has numerical value -1.
The correcting value of the cylinder 1 to 4 has an identical absolute value, but just as（Injection）Amount error equally has contrary
Symbol.Thus, the amount error in terms of spray fuel is compensated by the correcting value for cylinder 1 to 4, so as to
There is the stable operating of internal combustion engine.
In fig. 2, the emitted dose of level time 0.5 and level time 1.0 is shown in frequency range in the lower section of reference 103
Error.The amount error of level time 0.5 is it is meant that amount error occurs with 0.5 times of the speed of crankshaft of frequency.
In fig. 2, disposably as simulation tach signal 109 show this amount error.In turning that this is simulated
The left side of fast signal 109, as the parameter 111 of numeral the amount error of the level time 0.5 is shown.
The emitted dose error 111 is from the output signal of the rotation angle sensor on bent axle of the internal combustion engine and suitable
Obtain in the band filter of locality calibration.The level time 0.5（Referring to reference 111）With 1.0（Referring to reference
115）Emitted dose error summation it is identical with the emitted dose error shown in the top of the arrow 103.
Here, respectively described cylinder 1,2,3 and one of 4 is assigned with corresponding amount error.It is institute in the case of current
State cylinder 1 and be assigned with the amount error with numerical value -1.The amount error with numerical value+1 is assigned with for the cylinder 3, and is described
Cylinder 2 and 4 are assigned with the amount error with numerical value 0.
The smoothness of operation governor motion LRR by the present invention has band filter, the intermediate frequency of the band filter
Equivalent to the speed of crankshaft of half.Thus from the crankshaft angle sensor（It is not shown）Output signal in deduct simulation turn
Fast signal 109 and by it is so-called segmentation select（Segmentwahl）By the offrating of the speed of crankshaft or
The deviation for saying meansigma methodss distributes to the cylinder 1 to 4 by so-called segmentation selection.Therefrom obtain and distribute to the internal combustion engine
Digital signal Figure 111 of the emitted dose error 111 of 101 cylinder.
In fig. 2, that is, in level time 1.0, crank frequency frequency range draw as analogue signal 113
Another tach signal.The crankshaft signal 113 is tried to achieve from the output signal of the rotation angle sensor of the bent axle, in institute
Corresponding band filter 105 is enclosed in the rotation angle sensor for stating bent axle, the intermediate frequency of the band filter 105 is equivalent to song
The speed of axle.In the corresponding way, by being segmented selection come for the cylinder 1 from crankshaft signal 113 after filtering
To 4 numerical value for being respectively allocated corresponding numeral, the numerical value can be with absolute value 1 or 0 and with symbol.It is this to use numeral
The schematic diagram of the emitted dose error exclusive for cylinder for showing has in fig. 2 reference 115.
Until on this point, the interference volume that all smoothnesss of operation for making the internal combustion engine 101 are deteriorated have equal to or it is little
In the periodicity of a cycle of operation of internal combustion engine.
By the present invention, present regulation, by by the smoothness of operation governor motion LRR of the present invention come to corresponding interference because
Element is compensated, and the periodicity of the interference factor is more than cycle of operation AS.This is illustrated in part below Fig. 2.
In part below Fig. 2, the rotation speed change of the low frequency of the internal combustion engine 101 is shown with reference 117.
The excitation of this low frequency has the periodicity of the plural cycle of operation for including the internal combustion engine.Corresponding situation is also suitable
In lines 119, the lines 119 show the high-pressure fuel pump or other auxiliary units of such as described internal combustion engine 101 not
Impact of the torque-demand of rule to speed of crankshaft.
By regulation now of the invention, 117 and/or 119 are encouraged simultaneously again by described in the segmentation selection numerical monitor
And give each cylinder 1 to 4 of the internal combustion engine by corresponding emitted dose error distribution.Because with swashing shown in lines 117 and 119
Encourage very low frequency and its cycle is more than a cycle of operation of the internal combustion engine, so must be in the time of multiple cycle of operation
Inside come to distribute different amount errors correcting value in other words for the cylinder of the internal combustion engine.
The amount error produced from the excitation 117 with the stair-stepping lines 121 of numerical monitor in fig. 2 by being shown
Go out.Corresponding situation is also applied for by instantaneous sampling（Momentenabgriff）Carry out with using numerical monitor accordingly
Signal Figure 123 excitation 119.
The excitation 117,119 of these low frequencies is interpreted to a certain extent fuel injection side in the present inventive method
The amount error in face, although being for example not the case in the case where there are lines 119.This explanation is allowed, because ripple
Dynamic torque-demand 119 and emitted dose error 104 has identical effect：It can cause the fluctuation of speed of crankshaft.
It is described to distribute correcting value using this true and for internal combustion engine cylinder in the present inventive method, so determine
The correcting value, so as to there is constant speed of crankshaft.Here is inappreciable to be, it is reality to be the reason for for correcting value
Emitted dose error be still internal combustion engine auxiliary unit uneven torque-demand.
Therefore as a result, with it is described in the present inventive method by spraying when the corresponding correcting value that uses with identical
Quality is to ejector due to processing the tolerance for causing, the excitation caused by pressure accumulation pipe pressure 117 and uneven torque
Demand 119 is compensated.
As can be from the schematic diagram of lines 117 and 119 in other words its signal Figure 121 and 123 with numerical monitor
As going out, it is necessary to for each cylinder 1 to 4 be each cycle of operation AS1, AS2 correcting value different with AS3 distribution.Thus
Fluctuation that can be extremely efficient to the low frequency of the rotating speed of the internal combustion engine is compensated.
Show a case that in figures 3 and 4 to implement in the present inventive method in controller structure.
If such as envisioning for the internal combustion engine with six cylinders the high-pressure pump with 2:3 gear ratio is by internal combustion
The bent axle of machine is driving, then the bent axle triple turn for the gear ratio for being assumed（KWU）Pump shaft just revolves and takes two turns
（PWU）.It means that pump shaft have rotated 240 ° relative to initial condition after bent axle is rotated by 360 °.In a word, until the pump
Axle and bent axle again have identical attachment relationship before, continue for three cycle of operation, this equivalent to bent axle have rotated six circles or
2160 ° of crankshaft angles of person or pump shaft have rotated four circles.The different transportation horizontals of high-pressure pump（Ungleichförderung）Produce
Torque with corresponding frequencies interference, 2/3 and its multiple integral multiple of the corresponding frequencies equivalent to crank frequency.It is possible from
The interference of middle generation and the fuel quantity generation impact on being sprayed repeats after three cycle of operation AS.
The frequency of these interference is equivalent to the 1/3 of camshaft frequency.In order to detect these by design cause relative to turn
Fast signal is had the interference of the frequency of the 2/3 of crank frequency and it can be mended by the corresponding regulation of ejector
Repay, it is necessary to filter is mutually coordinated with this frequency.
Band filter can be set in principle, and the band filter makes important frequency range interior in other words with minimum
The tach signal of integral multiple of frequency pass through.In addition it is also possible to utilize discrete Fourier transform in time range（DFT）With
And its inverse transformation（iDFT）Or using galloping item（Laufunruheterms）, wherein for each other successively accompanying
Identical cylinder is estimated for cycle of operation.All three flexible program all needs similar in engine controller
Resource.But be because that the band filter steadily runs very much, thus this be preferred flexible program and with reference to
Fig. 3 is explained in detail.
In figure 3, the necessary controller structure in the present inventive method described in implementing is illustrated as square frame.It is defeated
It is cylinder enumerator 8, duty cycle counter 10 and speed probe 12 to enter parameter.The speed probe 12 sends rotating speed
Signal TS, tach signal TS are filtered by the first band filter 11 and the second band filter 15.Immediately preceding by institute
Behind the tach signal for stating band filter 11 and 15 to filter, the tach signal reaches the first segment selection module 13 and the
At two-section selecting module 17.The segment selection module is used for the tach signal in the speed probe 12 and above
The phase shift injected fuel between the process in one of described cylinder is compensated.Be achieved in the cylinder relative to turn
The clear and definite attachment relationship of fast signal.
The parameter of the band filter 11 is so given in the ongoing illustrated embodiment so that it allows by the pressure in common rail
The frequency that impact causes passes through.Tach signal is assigned on the other three multiplier 21,23 and 25 in the first multiplier 19.
Also it is input to the output signal of the cylinder enumerator 8 as input parameter coupling in the multiplier 21,23 and 25.It is described
Multiplier 21 provides input data for first group of actuator, and first group of actuator is needed for first cycle of operation.
The multiplier 23 provides necessary input parameter for second group of actuator, and second group of actuator needs to be used for
Second cycle of operation AS2.
The multiplier 25 provides input parameter for the 3rd group of actuator in the corresponding way, and the 3rd group of actuator is needed
It is used for the 3rd cycle of operation AS3.
In a word in the galloping sexual norm extended with six cylinders and in the range of three cycle of operation
A total of 3*6=18 actuator in the selected embodiment of combustion engine.For simple and clear reason, six actuators are only shown,
It is exactly actuator R1.1, the actuator R6.1 for the first cycle of operation, actuator R1.2 and actuator R6.2 and for the
The actuator R1.3 and R6.3 of three cycle of operation.
It is applied not only to the first cycle of operation and for the second cycle of operation and the actuator 2 to 5 of the 3rd cycle of operation
It is all not shown.The outfan of the multiplier 23 and 25 exists with six times of number, for showing to exist altogether 18（18）It is individual
Actuator.Described 18（18）Individual actuator R1.1 to R6.3 is so structured that pi regulator.
The outfan of described actuator R1.1, R1.2 and R1.3 is coupled with the input of the first ejector 1.Correspondingly,
The outfan of described actuator R6.1, R6.2 and R6.3 is coupled with the input of the 6th ejector 6.The ejector 2,3,4
In the corresponding way can be by the defeated of same unshowned actuator R2.1, R2.2 and R2.3 or R3.1, R3.2 and R3.4 with 5
Go out end to trigger.
When described in enforcement in the present inventive method, such as the ejector 1 of described cylinder 1 is in the first cycle of operation AS1
Triggered by the first actuator R1.1.In the second cycle of operation, identical ejector 1 is touched by the actuator R1.2
Send out, and the ejector 1 of cylinder 1 described in the 3rd cycle of operation is then triggered by the actuator R1.3.This point is correspondingly
Suitable for other cylinders 2 to 6.
Accordingly, for the fortune for such as in three duty cycle ranges and thus extending in 2160 ° of crank angle ranges
Turn to be compensated galloping for uneven stability pattern, method is individually touched in each cycle of operation
Send out ejector 1 to 6 described, for either passing through the reduction of sprayed fuel quantity or passing through the raising of sprayed fuel quantity
Rotating speed to make the internal combustion engine is as closely as possible to rated speed nsoll。
In the diagram, it is well known by the present invention from Fig. 3 as well known such as from the B4 of DE 195 27 218
Controller structure supplement traditional smoothness of operation control method.
In order to implement traditional smoothness of operation control method, such as it is provided with three band filters 31,33,35, institute
Band filter 31,33,35 is stated with different working ranges, wherein the band filter 31 has the frequency with camshaft
Corresponding working range.The band filter 33 has the working range corresponding with the twice of camshaft frequency and institute
Band filter 35 is stated with the working range corresponding with the three times of the camshaft frequency.Immediately preceding the band filter
31st, segmentation selection block 37,39 and 41 is arranged behind 33 and 35.The output parameter of these segmentation selection blocks 37,39 and 41 exists
Converge and be conveyed to multiplier 43 in summing point.This multiplier 43 also possesses the cylinder enumerator 8 as input parameter
Output signal and by input parameter be assigned on total of six actuator R1.4 to R6.4.
The outfan of the actuator R1.4 is connected with the entrance of the cylinder 1, and the output of the actuator R6.4
End is then connected with the entrance of the cylinder 6.By actuator R1.4 to the R6.4, can just as from traditional to a work
It is well known in the smoothness of operation control method that rotating speed deviation within circulating is compensated equally to arrive triggering the cylinder 1
6.In a word, 24 actuators are thus provided with by the controller structure of Fig. 2.
The controller structure that figure 4 illustrates is used as the supplement with 18 actuator R1.1 to R6.3 by the present invention
Also include six actuator R1.4 to the R6.4 for arranging in addition, this six actuator R1.4 to R6.4 can be with by a work
The periodic galloping sexual norm for making circulation composition implements traditional smoothness of operation control method.In a word, shown
Thus 24 actuators are provided with the embodiment for going out.
Claims (17)
1. it is used for internal combustion engine（101）The method that is adjusted of smoothness of operation, wherein being entered by the fuel quantity to being sprayed
The exclusive adjustment of circulation of qi promoting cylinder is adjusting the smoothness of operation of internal combustion engine, wherein speed probe（125）The internal combustion engine is provided
High-resolution tach signal（TS）, it is characterised in that at least two cycle of operation（AS）In the range of it is described to adjust
The smoothness of operation of internal combustion engine, and for each cylinder（1、2、3、4、5、6）For each cycle of operation（AS）One regulation of distribution
Device（R1.1、R2.1、…、R3.2、…、R5.3、R6.3）.
2. the method as described in claim 1, it is characterised in that become by filter, discrete fourier in frequency range
Change and its inverse transformation and/or in time range by the assessment of galloping item come to the tach signal（TS）Located
Reason.
3. the method as described in claim 2, it is characterised in that the filter is band filter.
4. the method as described in claim 2, it is characterised in that make treated tach signal（TS）It is discrete and by institute from
Scattered numerical value distributes to the cylinder of the internal combustion engine（1…n）.
5. the method as described in claim 4, it is characterised in that be on the basis of the discrete numerical value of the tach signal
The cylinder（1…n）The correcting value of fuel quantity to be sprayed is assigned, so as to the deviation to the deviation rating number of speed of crankshaft
Compensate.
6. method in any one of the preceding claims wherein is pressed, it is characterised in that from the tach signal（TS）In be described
Each cylinder of internal combustion engine（1…n）For the first cycle of operation（AS1）Distribute the first adjusting deviation（L1.1、L2.1、L3.1、…、
Ln.1）, first group of actuator（R1.1、R2.1、R3.1、…、Rn.1）According to first adjusting deviation（L1.1、L2.1、
L3.1、…、Ln.1）Carry out regulated value specific to previously given cylinder（Q1.1、Q2.1、Q3.1、…、Qn.1）, from the rotating speed
Signal（TS）In be the internal combustion engine each cylinder（1…n）For the second cycle of operation（AS2）Distribute the second adjusting deviation
（L1.2、L2.2、L3.2、…、Ln.2）, and second group of actuator（R1.2、R2.2、R3.2、…、Rn.2）According to described second
Adjusting deviation（L1.2、L2.2、L3.2、…、Ln.2）Carry out regulated value specific to previously given cylinder（Q1.2、Q2.2、
Q3.2、…、Qn.2）.
7. the method as described in claim 6, it is characterised in that speed probe（125）The internal combustion engine is provided（101）Turn
Fast signal（TS）, from the tach signal（TS）In be the internal combustion engine each cylinder（1…n）For the 3rd cycle of operation
（AS3）Distribute the 3rd adjusting deviation（L1.3、L2.3、L3.3、…、Ln.3）, the 3rd group of actuator（R1.3、R2.3、R3.3、…、
Rn.3）According to the 3rd adjusting deviation（L1.3、L2.3、L3.3、…、Ln.1）Carry out regulated value specific to previously given cylinder
（Q1.3、Q2.3、Q3.3、…、Qn.3）.
8. the method as described in claim 7, it is characterised in that methods described is used for into the 4th cycle of operation（AS4）And
Other cycle of operation are additionally operable to when needing（AS5…）.
9. the method as any one of claim 1 to 5, it is characterised in that from the tach signal（TS）It is middle according to song
Shaft angle degree（KWW）To detect the actual speed of internal combustion engine（nIst）Deviation rated speed（nSoll）Deviation, and to these
Deviation is analyzed to try to achieve at least two cycle of operation（AS1、AS2、ASm）In adjusting deviation（L1.1、L2.1、
L3.1、…、Ln.1、…、L1.2、L2.2、L3.2、…、Ln.2、…、Ln.m）.
10. the method as described in Claims 2 or 3, it is characterised in that in the following manner from being changed in the present inventive method
Traditional smoothness of operation control method, that is, distribute to a cylinder by all（1）Actuator（R1.1、R1.2、
R1.3）Meansigma methodss be the first cycle of operation（AS1）Distribute to corresponding actuator（R1.1）And/or by the filter
Parameter setting is to zero.
11. methods as described in claim 10, it is characterised in that the parameter of the filter is the amplification of band filter
Rate.
12. methods as described in claim 2, it is characterised in that in the following manner from by traditional smoothness of operation regulation
Method is changed in the present inventive method, i.e., all to distribute to a cylinder（1）Actuator（R1.1、R1.2、R1.3）With
One cycle of operation（AS1）Corresponding current numerical value initializing and/or by the parameter setting of the filter to answering
Numerical value.
13. methods as described in claim 3, it is characterised in that in the following manner from by traditional smoothness of operation regulation
Method is changed in the present inventive method, i.e., all to distribute to a cylinder（1）Actuator（R1.1、R1.2、R1.3）With
One cycle of operation（AS1）Corresponding current numerical value initializing and/or by the parameter setting of the filter to answering
Numerical value.
14. methods as described in claim 13, it is characterised in that the parameter of the filter is the band filter
Amplification.
15. controllers for being adjusted to the smoothness of operation of internal combustion engine, the controller includes multiple for internal combustion engine
Ejector carry out the actuator of the exclusive triggering of cylinder（R1.1、R2.1、…、R3.2、…、R5.3、R6.3）, its feature exists
In the triggering is according to the method for any one of the claims 1 to 14 come work.
16. controllers as described in claim 15, it is characterised in that the actuator（R）Number at least equal to by described
Cylinder（n）Number and the cycle of operation number（m）The product of composition, namely the number=m*n of actuator.
17. controllers as described in claim 16, it is characterised in that be extraly each cylinder（n）Be provided with for
One cycle of operation（AS）Within the smoothness of operation actuator that is adjusted of smoothness of operation（R1.4、…、R6.4）, namely
Number=the n* of actuator（m+1）.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011077698.2A DE102011077698B4 (en) | 2011-06-17 | 2011-06-17 | Method and device for controlling the smooth running of an internal combustion engine |
| DE102011077698.2 | 2011-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828844A CN102828844A (en) | 2012-12-19 |
| CN102828844B true CN102828844B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210200520.8A Expired - Fee Related CN102828844B (en) | 2011-06-17 | 2012-06-18 | Method and apparatus for adjusting operation stability of internal combustion engine |
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| Country | Link |
|---|---|
| CN (1) | CN102828844B (en) |
| DE (1) | DE102011077698B4 (en) |
| IN (1) | IN2012DE01111A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102013217725B3 (en) * | 2013-09-05 | 2014-08-28 | Continental Automotive Gmbh | Improved signal acquisition for cylinder equalization in a motor vehicle |
| DE102014204492A1 (en) | 2014-03-12 | 2015-10-01 | Volkswagen Aktiengesellschaft | Motor vehicle, control unit and method for controlling a phase angle of a camshaft |
| CN104295388B (en) * | 2014-08-14 | 2017-02-15 | 吉林大学 | Engine all-cylinder nonuniformity compensation control method based on indicated torque |
| DE102015203940A1 (en) * | 2015-03-05 | 2016-09-08 | Volkswagen Ag | Method and control device for determining a course of action |
| DE102016214286A1 (en) * | 2015-12-07 | 2017-06-08 | Robert Bosch Gmbh | Method for zero-quantity calibration of injector-metered fuel in an internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257477A (en) * | 1999-03-01 | 2000-09-19 | Robert Bosch Gmbh | Internal combustion engine drive method, control element, and the internal combustion engine |
| JP2001012278A (en) * | 1999-06-30 | 2001-01-16 | Isuzu Motors Ltd | Electronic fuel injection controller |
| CN1712690A (en) * | 2004-06-25 | 2005-12-28 | 罗伯特.博世有限公司 | Control of ic engine |
| JP3881713B2 (en) * | 1994-12-23 | 2007-02-14 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Method and apparatus for controlling internal combustion engine to stable operation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19527218B4 (en) | 1994-12-23 | 2004-03-18 | Robert Bosch Gmbh | Method and device for regulating the smooth running of an internal combustion engine |
| DE10122247B4 (en) * | 2001-05-08 | 2004-06-24 | Robert Bosch Gmbh | Method for phase detection in an internal combustion engine |
-
2011
- 2011-06-17 DE DE102011077698.2A patent/DE102011077698B4/en not_active Expired - Fee Related
-
2012
- 2012-04-12 IN IN1111DE2012 patent/IN2012DE01111A/en unknown
- 2012-06-18 CN CN201210200520.8A patent/CN102828844B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3881713B2 (en) * | 1994-12-23 | 2007-02-14 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Method and apparatus for controlling internal combustion engine to stable operation |
| JP2000257477A (en) * | 1999-03-01 | 2000-09-19 | Robert Bosch Gmbh | Internal combustion engine drive method, control element, and the internal combustion engine |
| JP2001012278A (en) * | 1999-06-30 | 2001-01-16 | Isuzu Motors Ltd | Electronic fuel injection controller |
| CN1712690A (en) * | 2004-06-25 | 2005-12-28 | 罗伯特.博世有限公司 | Control of ic engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011077698A1 (en) | 2012-12-20 |
| DE102011077698B4 (en) | 2022-08-25 |
| CN102828844A (en) | 2012-12-19 |
| IN2012DE01111A (en) | 2015-09-25 |
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