CN102428262B - For triggering the method for the sparger in internal-combustion engine - Google Patents
For triggering the method for the sparger in internal-combustion engine Download PDFInfo
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- CN102428262B CN102428262B CN201080021902.3A CN201080021902A CN102428262B CN 102428262 B CN102428262 B CN 102428262B CN 201080021902 A CN201080021902 A CN 201080021902A CN 102428262 B CN102428262 B CN 102428262B
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- sparger
- exclusive
- lifting
- lasts time
- activation lasts
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 20
- 239000000446 fuel Substances 0.000 claims abstract description 70
- 230000004913 activation Effects 0.000 claims abstract description 47
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 230000001934 delay Effects 0.000 claims abstract description 16
- 230000003111 delayed effect Effects 0.000 claims description 19
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000002123 temporal effect Effects 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
In order to improve burning quality and especially improve the precision of the fuel quantity of institute dosage in the internal-combustion engine with the fuel injection apparatus comprising multiple sparger, propose, at least one sparger depends on that the lifting of this sparger delays (48) to try to achieve the exclusive activation lasts time (74) at this.Trigger action for this sparger depends on that the tried to achieve exclusive activation lasts time (74) carries out.Thus the trigger action that sparger is exclusive is provided, though this trigger action operate in described sparger in part Lifting scheme time also can reduce in by the fuel quantity of different spargers institute dosage difference.
Description
Technical field
The present invention relates to a kind of method for triggering the sparger in the fuel injection apparatus of internal-combustion engine, wherein said fuel injection apparatus comprises multiple sparger and the fuel quantity wherein sprayed by means of sparger depends on activation lasts time of described sparger.
In addition, the present invention relates to a kind of controller sprayed for the fuel controlling/regulate in internal-combustion engine, wherein said internal-combustion engine comprises a fuel injection apparatus and described fuel injection apparatus comprises multiple sparger and the fuel quantity wherein sprayed by means of sparger depends on activation lasts time of described sparger.
In addition, the present invention relates to a kind of computer program, this computer program can on the computing device, especially for controlling and/or regulate the controller that the fuel in internal-combustion engine sprays runs.
Background technique
Fuel injection apparatus can carry out dosage for the fuel required for burning in internal-combustion engine by means of one or more sparger.For gasoline direct and common rail injection, inject fuel directly in firing chamber.For burning quality and thus for fuel consumption and the exhaust gas properties of internal-combustion engine, the fuel quantity of institute's dosage has decisive meaning.
But the fuel quantity of institute's dosage is subject to the impact of the performance of sparger itself.Due to the sample bias (Exemplarstreuungen) occurred on the sparger being used in internal combustion engines, be different by the fuel quantity great majority of these sparger institute dosages, this just causes the reduction of burning quality thereupon.Especially in so-called a small amount of scope, the relative sample bias of described sparger especially can have an impact, because that is described sparger runs when not reaching backstop in part Lifting scheme.
The compensation of the fuel quantity using being subject to the impact of described sample bias is in the past as the measure of target based on pre-control principle, and described pre-control principle applies on all spargers be present in internal-combustion engine uniformly.From the fuel quantity required by engine management system, calculate the activation lasts time for this reason, and-when considering pre-control-to depend on that in the inside of internal-combustion engine needing the fuel quantity of dosage triggers.
Summary of the invention
Task of the present invention is, improves the burning quality in internal-combustion engine and especially improves the precision of the fuel quantity of institute's dosage.
This task is resolved by the method for carrying out triggering for the sparger in the fuel injection apparatus of combustion motor, wherein said fuel injection apparatus comprises multiple sparger and the fuel quantity wherein sprayed by means of sparger depends on activation lasts time of described sparger, wherein at least one sparger, depend on that the exclusive lifting of this sparger delays trying to achieve the exclusive activation lasts time, and the triggering for this sparger depends on that the tried to achieve exclusive activation lasts time carries out, fuel quantity deviation depends on that described lifting delays trying to achieve, and described sparger exclusive activation lasts time then depends on that described fuel quantity deviation is tried to achieve.
This task is also by being resolved for the controller controlled and/or regulate the fuel in internal-combustion engine to spray, wherein said internal-combustion engine comprises fuel injection apparatus and described fuel injection apparatus comprises multiple sparger and the fuel quantity wherein sprayed by means of sparger depends on activation lasts time of this sparger, wherein said controller comprises for determining at least one sparger in described internal-combustion engine, depend on the device of the exclusive activation lasts time that the lifting of this sparger is delayed and comprise for depending on that the tried to achieve exclusive activation lasts time triggers the device of this sparger, fuel quantity deviation depends on that described lifting delays trying to achieve, and described sparger exclusive activation lasts time then depends on that described fuel quantity deviation is tried to achieve.The present invention gives other preferred technological scheme.
By the present invention at least one sparger, depend on that the lifting of this sparger delays trying to achieve the exclusive activation lasts time.Trigger action for this sparger depends on that the tried to achieve exclusive activation lasts time carries out.Even if when that is described sparger runs in part Lifting scheme, also can provide the trigger action that sparger is exclusive, this trigger action can reduce by the difference in the fuel quantity of different spargers institute dosage.In order to realize this point, the impact of the sample bias of described sparger be reduced.
By the present invention, not only to the exclusive long-term deviation of the sparger of fuel injection amount but also compensate the difference caused by tolerance.
The present invention is viewed as basis with such, namely in part lifting runs, needle lift change and fuel quantity sprayed thus is delayed (Abhebeverz gerung) with the so-called lifting of sparger and is associated.Especially show the observation of the so-called flow triggering duration property curve of each sparger in part expanded reach, the characteristic curve of so trying to achieve almost offsets in parallel with each other.The reason of this skew is that the different equilibrium of forces (Kr ftebilanz) of each injector interior, described different equilibrium of forces are then such as derived from different closed elastic force, friction, the closing force of hydraulic pressure or magnetic force.Observe, the so-called lifting of described characteristic skew and each sparger is delayed proportional.
By the present invention, therefore depend on that described lifting delays individually trying to achieve the activation lasts time for each sparger, wherein preferably in the running of internal-combustion engine, try to achieve described lifting delay.Can carry out especially rapidly and continuous print adjustment thus.Described lifting delays to try to achieve by means of diverse ways at this.
Preferably first arrange for control and/or fuel metering spraying equipment controller in, depend on fuel quantity given in advance and depend on the pressure that produces in so-called rail if desired by characteristic curve to try to achieve the average activation lasts time.Revise the average activation lasts time of so trying to achieve with the amplitude that sparger is exclusive, the difference between the mean value that the exclusive numerical value of wherein said sparger is delayed by the lifting that sparger is exclusive and described lifting is delayed is kept in described controller formed.Described mean value itself is then delayed forming by the lifting of the sparger of quantity important statistically.Described sparger can be such as the sparger be present in internal-combustion engine.Then consider by means of amplification factor the impact on the activation lasts time that described lifting is delayed.Because the dosage of the fuel quantity undertaken by sparger is inconstant about the activation lasts time, so use described amplification factor to be favourable.
What acquire a special sense is realize the present invention in the form of a computer program, described computer program on the computing device especially for controlling and/or regulate the controller that the fuel in internal-combustion engine sprays runs, wherein can be programmed for enforcement by method of the present invention to described computer program.On storage medium that is that described computer program is preferably kept in electronics or optics.
Accompanying drawing explanation
Other advantage of the present invention, characteristic sum details obtain from following explanation, show different embodiment of the present invention in the following description with reference to accompanying drawing.This in the claims and feature mentioned in the description individually or be all important for purposes of the invention to combine arbitrarily.Accompanying drawing illustrates as follows:
Fig. 1 is the schematic diagram very simplified of the internal-combustion engine with fuel injection apparatus and multiple sparger by the present invention's operation,
Fig. 2 a is the schematic detailed view in the running state of closing of a kind of exemplary mode of execution of sparger,
Fig. 2 b is the schematic detailed view in the running state opened of a kind of exemplary mode of execution of sparger,
Fig. 3 is the schematic diagram promoting the simplification of operating stroke and needle lift change curve in part of sparger,
Fig. 4 is the example of the trigger characteristic curve in part expanded reach for different spargers,
Fig. 5 is the skeleton diagram of a kind of mode of execution by method of the present invention, and
Fig. 6 is the flow chart of the simplification of a kind of mode of execution by method of the present invention.
Embodiment
Fig. 1 shows internal-combustion engine 10, and this internal-combustion engine 10 comprises fuel reserve container 12, from this fuel reserve container 12 by means of transporting system 14 by fuel area density in fuel high pressure pipeline 16.Described pressure duct 16 is such as configured to common rail.This pressure duct 16 is connected with sparger 18, and described sparger 18 can inject fuel directly into corresponding distributing in the firing chamber 20 of described sparger 18.The operation of described internal-combustion engine 10 and the operation of fuel injection apparatus that especially forms as by described transporting system 14, pressure duct 16 and sparger 18 are by being such as that the control of controller 22 and controlling device control to regulate in other words.Described controller 22 can detect input value and provide output value to trigger final controlling element in other words, especially triggers described sparger 18.
Fig. 2 schematically shows sparger 18 shown in Figure 1 enlargedly.Described sparger 18 has the final controlling element of electromagnetism, and the final controlling element of described electromagnetism then has electromagnetic coil 26 and armature 30 coefficient with this electromagnetic coil 26.Described armature 30 is so connected with needle 28, and this armature 30 can be moved about the moving direction vertical in fig. 2 of described needle 28.Elastic force is applied on described needle 28 by valve spring 36, thus is remained in valve seat 38 by this needle 28.
Carry out trigger sprayer 18 by described controller 22, this causes the energising of electromagnetic coil 26, and described armature 30 moves upward thus, makes it make when being engaged in backstop 32 described needle 28 overcome elastic force and moves out from the valve seat 38 of this needle.This situation illustrates in figure 2b.By sparger 18, fuel 42 can be ejected in firing chamber 20 now there.
Fig. 3 schematically illustrates the stroke and the needle lift change curve 44 that promote operating simplification in part of sparger 18.At moment T0, trigger described sparger 18 by means of so-called CLK clock 46 by described controller 22.Through being called as the time lag promoting and delay 48, just open described sparger 18 at moment T1.Carry out sparger 18 described in end trigger at moment T2 by means of CLK clock 46 and close again described sparger 18 at moment T3.The time lag between moment T0 and T2 is called the activation lasts time 50 and time lag between moment T2 and T3 is called and closes the endurance 52.
Fig. 4 schematically illustrates in part expanded reach three flow triggering characteristic curves 60,61 and 62 of different spargers 18.Described characteristic curve 60,61 and 62 almost offsets in parallel with each other.The reason of this deviation is the different equilibrium of forces of each sparger 18 inside.These difference or sample bias are such as based on closing force or the different magnetic force of different elastic force, different frictions, different hydraulic pressure.
Can find out in the diagram, it is proportional that 48-1,48-2 and 48-3 are delayed in the temporal skew of described characteristic curve 60,61 and 62 and respective lifting.Horizontal axis shows the exemplary activation lasts time with millisecond.Described lifting is delayed 48 and is promoted in other words and delay 48-1,48-2 and 48-3 and can determine by means of characteristic curve 60,61 and 62.Preferably determine that relative lifting delays 48 about mean value, described mean value is delayed 48 by the lifting of multiple sparger 18 and is formed.Described sparger 18 can be such as the sparger 18 be present in internal-combustion engine 10.Also can try to achieve mean value by the sparger 18 of particular batch and illustrate that described lifting delays 48 about this mean value.Also it is contemplated that other reference amount.At this first importantly, for a parameter tried to achieve by each sparger 18, this parameter allows to delay 48 about its exclusive lifting and draws a conclusion.
Fig. 4 illustrates, promote the sparger 18 with characteristic curve 60 in advance, its characteristic curve is offset, otherwise the sparger 18 with characteristic curve 62 shown in Figure 4 promotes especially behindhand left, therefore its characteristic curve offsets to the right.The skew of described characteristic curve 60,61 and 62 can be inferred from mean value described above according to the described lifting difference of delaying between 48-1,48-2 and 48-3.This preferably realizes by means of the calculating in controller 22.This information is analyzed as follows by the present invention: if the lifting of a known sparger 18 delays 48, it departs from the deviation of the mean value of the sparger 18 of quantity important statistically in other words, that just can determine the amount deviation of the mean value being departed from described fuel 42 by the amount of the fuel 42 of this sparger 18 dosages in other words thus, and the mean value of described fuel 42 is determined as the sparger 18 of mean value by described quantity important statistically.By the adjustment to the described activation lasts time 50, common mean value can will should be adjusted to the fuel quantity of this sparger 18 dosage.This means, can by the fuel quantity deviation adjustment of this sparger 18 to zero.The deviation that the lifting of each sparger 18 described delays 48 works as the skew that sparger in flow triggering characteristic curve is exclusive thus in part expanded reach.
Square frame shown in Fig. 5 there is shown a kind of embodiment by regulating method of the present invention, the described fuel injection amount deviation that can reduce described sparger 18 by method of the present invention.The said activation lasts time 50 depends on the pressure in fuel quantity setting value 66 and pressure duct 16 in known manner from characteristic curve 64, and namely so-called rail pressure 68 is determined.The exclusive lifting of described sparger is delayed 74 and is tried to achieve in known manner by suitable method.Then determine to delay 48 differences formed with mean value 70, the mean value that the lifting that wherein said mean value 70 describes the sparger 18 of quantity important is statistically delayed by described lifting.To this sparger exclusive differ from 72 loading amplification factor k, and can like this as by delay from described activation lasts time 50 and described lifting 48 by means of amplification factor k revise sparger exclusive differ from 72 ask poor mode to try to achieve correction value 74.Determine the activation lasts time 74 that sparger is exclusive thus, the exclusive trigger action of sparger can be carried out by means of this activation lasts time 74.
Realize this point by means of described by device of the present invention in other words by method of the present invention described in utilizing, namely obviously reduce about the deviation being ejected into the fuel quantity in firing chamber 20 by different spargers 18, this can improve burning quality again significantly.
Fig. 6 shows the described flow chart very simplified by a kind of embodiment of method of the present invention.Each step of described method such as follows skeleton diagram shown in Figure 5.In step 100, from described characteristic curve 64, the amount of depending on setting value 66 and rail pressure 68 try to achieve the described activation lasts time 50.
To be delayed by the lifting that provided sparger is exclusive in step 110 and the mean value 70 be such as kept in the memory block of controller 22 of sparger of quantity important is statistically tried to achieve difference and this difference is multiplied with amplification factor k.
Determine that the activation lasts time 74 that described sparger is exclusive, method are as by asking difference to be connected with difference 72 the activation lasts time 50 of trying to achieve in step 110 when considering amplification factor k in the step 120.
Preferably implement described by method of the present invention in the running of internal-combustion engine continuously.The activation lasts time can be revised thus especially sensitively and try to achieve the sparger exclusive triggered time in other words, also can consider the aging effect of sparger 18 thus.
Claims (5)
1. the method triggered is carried out for the sparger (18) in the fuel injection apparatus of combustion motor (10), wherein said fuel injection apparatus comprises multiple sparger (18) and the fuel quantity wherein sprayed by means of sparger (18) depends on activation lasts time (50) of described sparger (18), it is characterized in that, for at least one sparger (18), depend on that the exclusive lifting of this sparger (18) delays (48) to try to achieve the exclusive activation lasts time (74), and the triggering for this sparger (18) depends on that the tried to achieve exclusive activation lasts time (74) carries out, fuel quantity deviation depends on that described lifting delays (48) to try to achieve, and described sparger exclusive activation lasts time (74) then depends on that described fuel quantity deviation is tried to achieve,
-from characteristic curve (64), depend on that fuel quantity (66) given in advance and the pressure (68) be present in rail (16) determine the activation lasts time (50),
-with the exclusive difference (72) of sparger for amplitude is revised described activation lasts time (50), difference between the mean value (70) that what the exclusive difference (72) of wherein said sparger was delayed by the lifting that sparger is exclusive that the lifting of the sparger (18) of (48) and quantity important statistically delays be kept in controller (22) is formed, and wherein considers that the exclusive difference (72) of described sparger is on the impact of average activation lasts time (50) by means of amplification factor (k).
2., by method according to claim 1, it is characterized in that, in the running of internal-combustion engine (10), try to achieve described lifting delay (48).
3. by the method described in claim 1 or 2, it is characterized in that, so determine the described exclusive activation lasts time (74), the corresponding fuel quantity with the described exclusive activation lasts time (74) is equivalent to for mean value common the middle sparger (18) existed of described internal-combustion engine (10).
4. by the method described in claim 1 or 2, it is characterized in that, described lifting is delayed (48) and is determined as the deviation of mean value (70), and wherein said mean value (70) is delayed middle formation from the lifting of the sparger (18) of quantity important statistically or delayed middle formation from the lifting of the sparger (18) be present in described internal-combustion engine (10).
5. for controlling and/or regulate the controller (22) that the fuel in internal-combustion engine (10) sprays, wherein said internal-combustion engine (10) comprises fuel injection apparatus and described fuel injection apparatus comprises multiple sparger (18) and the fuel quantity wherein sprayed by means of sparger (18) depends on activation lasts time of this sparger (18), it is characterized in that, described controller (22) comprises for determining at least one sparger (18) in described internal-combustion engine (10), depend on that the lifting of this sparger (18) is delayed the device of the exclusive activation lasts time (74) of (48) and comprises for depending on that the tried to achieve exclusive activation lasts time (74) triggers the device of this sparger (18), fuel quantity deviation depends on that described lifting delays (48) to try to achieve, and described sparger exclusive activation lasts time (74) then depends on that described fuel quantity deviation is tried to achieve,
-from characteristic curve (64), depend on that fuel quantity (66) given in advance and the pressure (68) be present in rail (16) determine the activation lasts time (50),
-with the exclusive difference (72) of sparger for amplitude is revised described activation lasts time (50), difference between the mean value (70) that what the exclusive difference (72) of wherein said sparger was delayed by the lifting that sparger is exclusive that the lifting of the sparger (18) of (48) and quantity important statistically delays be kept in controller (22) is formed, and wherein considers that the exclusive difference (72) of described sparger is on the impact of average activation lasts time (50) by means of amplification factor (k).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009003209.6 | 2009-05-19 | ||
| DE200910003209 DE102009003209A1 (en) | 2009-05-19 | 2009-05-19 | Method for controlling injectors in an internal combustion engine |
| PCT/EP2010/055356 WO2010133416A1 (en) | 2009-05-19 | 2010-04-22 | Method for controlling injectors in an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102428262A CN102428262A (en) | 2012-04-25 |
| CN102428262B true CN102428262B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080021902.3A Active CN102428262B (en) | 2009-05-19 | 2010-04-22 | For triggering the method for the sparger in internal-combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102428262B (en) |
| DE (1) | DE102009003209A1 (en) |
| WO (1) | WO2010133416A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014208837A1 (en) * | 2014-05-12 | 2015-11-12 | Robert Bosch Gmbh | Method for controlling an opening behavior of injection valves |
| DE102015219741B4 (en) * | 2015-10-12 | 2022-08-11 | Vitesco Technologies GmbH | Precise determination of the injection quantity of fuel injectors |
| JP6394923B2 (en) * | 2016-06-29 | 2018-09-26 | トヨタ自動車株式会社 | Control device for internal combustion engine |
| CN108361139B (en) * | 2018-01-29 | 2020-08-25 | 中国第一汽车股份有限公司 | Fuel injector small oil quantity control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0905359A2 (en) * | 1997-09-26 | 1999-03-31 | Isuzu Motors Limited | A fuel injection method and device for engines |
| EP0971115A2 (en) * | 1998-07-08 | 2000-01-12 | Isuzu Motors Limited | Common-rail fuel injection system |
| CN1615398A (en) * | 2002-01-15 | 2005-05-11 | 株式会社三国 | Fuel injection control device |
| DE102007019099A1 (en) * | 2007-04-23 | 2008-10-30 | Continental Automotive Gmbh | Method and device for calibrating fuel injectors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018078A (en) * | 1998-06-30 | 2000-01-18 | Isuzu Motors Ltd | Pressure dropping start timing specifying method of common rail, besides engine's fuel injection method and device thereof |
-
2009
- 2009-05-19 DE DE200910003209 patent/DE102009003209A1/en active Pending
-
2010
- 2010-04-22 CN CN201080021902.3A patent/CN102428262B/en active Active
- 2010-04-22 WO PCT/EP2010/055356 patent/WO2010133416A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0905359A2 (en) * | 1997-09-26 | 1999-03-31 | Isuzu Motors Limited | A fuel injection method and device for engines |
| EP0971115A2 (en) * | 1998-07-08 | 2000-01-12 | Isuzu Motors Limited | Common-rail fuel injection system |
| CN1615398A (en) * | 2002-01-15 | 2005-05-11 | 株式会社三国 | Fuel injection control device |
| DE102007019099A1 (en) * | 2007-04-23 | 2008-10-30 | Continental Automotive Gmbh | Method and device for calibrating fuel injectors |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010133416A1 (en) | 2010-11-25 |
| CN102428262A (en) | 2012-04-25 |
| DE102009003209A1 (en) | 2010-11-25 |
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