CN107842488A - The method for running the stroke magnet armature pump for returning to conveying in empty stage - Google Patents
The method for running the stroke magnet armature pump for returning to conveying in empty stage Download PDFInfo
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- CN107842488A CN107842488A CN201710841384.3A CN201710841384A CN107842488A CN 107842488 A CN107842488 A CN 107842488A CN 201710841384 A CN201710841384 A CN 201710841384A CN 107842488 A CN107842488 A CN 107842488A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
- F01N2610/144—Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0201—Current
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
Abstract
The present invention relates to the method for running stroke magnet armature pump, wherein, the time point (t at the end of the armature movement of the trip magnet armature pumpMSP[n]) on the basis of controlling pump curent change curve saturation stage (62).
Description
Technical field
The present invention relates to the method for running the stroke magnet armature pump in the conveyor module of SCR system, the trip magnetic
Body armature pump is used to return to conveying in empty stage.Moreover, it relates to computer program, when the computer program exists
When being run on computing device, the computer program performs each step in the present inventive method, and the invention further relates to can machine
The storage medium of reading, it stores the computer program.Finally, the present invention relates to the controller of electronics, it is arranged for reality
Apply in the present inventive method.
Background technology
In SCR method (SCR), it has been mixed into is also typically used as AdBlue in the exhaust gas of an internal combustion engine®It is public
The aqueous solution of urea known is as reducing agent.Conveying and dosing system provide reductant solution, thus dosage module is by this reduction
Agent solution is directly metered into waste gas stream before SCR catalyst.The ammonia needed for further reaction is generated by urea there.
In second step, in SCR catalyst, nitrogen oxides and ammonification synthetic water and nontoxic nitrogen from waste gas.
It is used to be transported to dosage module from reducing agent hopper by reductant solution using conveyor module, the conveyor module includes
The return conveyor module of tape travel magnet armature pump, the stroke magnet armature pump are provided for, and will come from conveying and dosage system
The reductant solution of system is returned and is transported in reducing agent hopper.Stroke magnet armature pump is run by magnetic coil, and magnetic coil passes through
Current control.In order to reach the magnet armature of stroke magnet armature pump and the therefore motion of the circulation of reciprocating piston, in pump
Stage (magnetic coil is energized in the triggering stage) and triggering intermittently (in interval is triggered magnetic coil are triggered in curent change curve
It is not energized) alternately.In the triggering stage, pump curent change curve has ascent stage and saturation stage, in ascent stage,
Electric current monotonously rises, and in saturation stage, electric current is held nearly constant constant.
In order to ensure backflow minimum during emptying and in order to make the sound intensity of stroke magnet armature pump when returning and conveying
Keep relatively low, in addition to electric current, also control the time point at the end of armature movement.By the A1 of DE 10 2,011 088 701, it is known that working as
When pump curent change curve has reached local minimum value, the end of armature movement is recognized.By forming pump curent change song
The first derivative of line, it is particularly possible to local minimum value is recognized, wherein, when first derivative is equal to 0, the part be present most
Small value.
The content of the invention
Methods described is used to run stroke magnet armature pump, and the trip magnet armature pump is particularly in emptying SCR system
Pressure piping during return to reductant solution of the conveying in SCR system, the armature movement of the trip magnet armature pump passes through
Current excitation.Here, time of the saturation stage of pump curent change curve at the end of the armature movement of stroke magnet armature pump
It is controlled by the basis of point.The end of armature movement can be identified as local minimum value in pump curent change curve.
Therefore the time point at the end of armature movement can be detected.
Especially should such control electric current, i.e. so that the time point at the end of armature movement is in pump curent change curve
Saturation stage in.In order to determine this point, the current strength at the minimum value of part has been preferably greater than first threshold, and this
The preferred relative saturation electric current of one threshold value is between 80% and 95%, the scope being particularly preferably between 85% and 95%
It is interior.
Recursive method is preferably used for this, in recursive method, saturation current is from a stroke to next stroke
Ground changes.First advantage is to reduce to launch by the sound of stroke magnet armature pump.
When the temperature of stroke magnet armature pump rises or electric current is not enough to control armature movement, no doubt less intensely
Local minimum value is formed, thus makes the detection at the time point at the end of armature movement become difficult.Second of this method
Advantage therefore that, when part minimum value be in invariable saturation stage when, compared to ascent stage be easier can know
It is clipped to the local minimum value.
In another aspect, an Adaptation factor can be calculated, to determine the time point at the end of armature movement.Especially
It preferably can continuously calculate the Adaptation factor during pump operation.It can be determined in addition by the Adaptation factor, gas
Whether body is in pressure piping.In this context, Adaptation factor may be advantageously used with, when this Adaptation factor drops to
When under preferably shorter than 0.7 Second Threshold, terminate emptying.
On the other hand, Adaptation factor can act as the base of the repetitive rate for improving pump curent change curve in emptying
Plinth.During emptying, the metering valve of dosage module is opened, thus gas flows into the pressure piping emptied.Because gas
Volume improve, so the time that stroke magnet armature pump suctions out reductant solution from pressure piping can be reduced.
In order to improve the repetitive rate of pump curent change curve, preferably change duty ratio.Duty ratio is illustrated in armature movement
Ratio between the triggering stage being energized by electric current and triggering interval.Here, particularly preferably only shortening the triggering stage, touch
Hair interval is on the contrary then to keep constant.It may thereby be ensured that stroke magnet armature pump further guides reductant solution completely.
In another aspect, ramp function is provided for the ascent stage of controlling pump curent change curve.Ramp function
It is related to the resistance and inductance of stroke magnet armature pump, it is more precisely, related to the magnetic coil of stroke magnet armature pump.It is preferred that
Pass through the rising of electric current of the ramp function amendment in the ascent stage of pump curent change curve.
It is optional to terminate to empty when there are one of three kinds of following states：
- Adaptation factor drops under Second Threshold, wherein, Second Threshold is preferably shorter than 0.7；
Electric current at the end of-armature movement, it is determined that dropped to after the quantity for the stroke implemented under the 3rd threshold value, wherein,
3rd threshold value is related to the electric current of saturation stage and electric current of preferably shorter than saturation stage 80%, especially preferably less than 70%；
At time point at the end of-armature movement, it is under the 4th threshold value；And
The fixed volume of-reductant solution is suctioned out from pressure piping.
Computer program is arranged for carrying out each step of methods described, particularly when the computer program is calculating
When being performed on equipment or controller.It realizes implementation of the methods described in the controller of traditional electronics, without for this
Take structural change.For this, the computer program is stored in machine readable storage medium.
By operation of the computer program on the controller of traditional electronics, obtain by electronics of the invention
Controller, the controller of the electronics are provided for, the electric current in empty stage control for stroke magnet armature pump.
Brief description of the drawings
Embodiments of the invention are shown in the drawings and explained in detail in ensuing explanation.
Fig. 1 shows SCR system, and it can use a kind of embodiment in the present inventive method to control.
Fig. 2 shows the flow chart according to a kind of embodiment in the present inventive method.
Fig. 3 is the pump curent change curve for multiple strokes according to a kind of embodiment in the present inventive method
Chart.
Embodiment
Fig. 1 shows the conveying and dosing system for SCR catalyst, and the conveying and dosing system include reducing agent hopper
1st, conveyor module 2, dosage module 3 and controller 4.Reductant solution is transported into conveyor module 2 from hopper unit 1.Reducing agent
Solution by the first suction check-valves 21 and is drawn onto in delivery pump 22 at this, and delivery pump is configured to stroke magnet armature pump,
Also referred to as reciprocating piston diaphragm pump.Reductant solution then before this by first pressure check-valves 23 and followed by
Ripple damper 24 and be out transported to from conveyor module 2 in dosage module 3 by pressure piping 32, reductant solution by
Metering valve 31 is metered into exhaust system from dosage module.The resorption of reductant solution passes through the resorption module in conveyor module 2
25 are possible and especially use in emptying conveying and during dosing system.Resorption module 25 includes the second suction check-valves 251, the
Two pressure check valves 253 and suction pump 26.Suction pump 26 is configured to reciprocating piston diaphragm pump and including for defeated on capacity
Send the diaphragm 261 of reductant solution, reciprocating piston 262 (its oscillatory type motion has been delivered to diaphragm 261), with magnet electricity
The stroke magnet 263 (when reciprocating piston is powered, the trip magnet promotes reciprocating piston 262 to raise) and pressure of pivot 264
(when stroke magnet 263 is no longer energized, reciprocating piston 262 is pressed back into its pedestal to power spring 265 by the compression spring again
In).Reciprocating piston 262 pump motion in, second suction check-valves 251 opens, thus reductant solution can flow into it is past
Dual Piston diaphragm pump 26.Each stroke n thus conveys a certain amount of reductant solution from conveying and dosing system.When
When reciprocating piston 262 is returned in its pedestal, the second suction check-valves 251 is closed and reductant solution is from reciprocating piston film
Piece pump 26 is out compressed by pressure valve 253, and the pressure valve is simultaneously as the anti-overflow for reciprocating piston diaphragm pump 22
Device.The reductant solution of resorption module 25 is left, can be drawn back into by ice pressure damper 27 in reducing agent hopper 1.
Figure 2 illustrates a kind of flow chart of embodiment in the present inventive method.In first step 500,
Saturation current I for next stroke n is providedsat[n].This saturation current represents electric current I [n], can be full with the electric current
It is powered with the stroke magnet 263 in the stage 62 to reciprocating piston diaphragm pump 26.Then 501 strokes are calculated for next stroke n
Current strength I at the end of the motion of the magnet armature 264 of magnet armature pump 26MSP[n] and time point tMSP[n].Following
Comparison 502 in, by the current strength I at the end of the motion of magnet armature 264MSP[n] and first threshold S1Compare, this
One threshold value is by saturation current Isat[n] is calculated and is determined as the saturation current I in this embodimentsat[n's]
90%。
If the current strength I at the end of the motion of magnet armature 264MSP[n] is on first threshold S1, then magnet
Time point t at the end of the motion of armature 264MSP[n] is in saturation stage 62.Corresponding saturation current is hereinafter with attached
Icon is rememberedMark, meet aforementioned condition for the first time for the saturation current.And then 510 are calculated according to formula 1
The time point t terminated for determining armature movementMSPAdaptation factor a.
(formula 1).
Here,Saturation current is referred to such as just explanation, the saturation current meets this for the first time
The condition of sample, i.e. the current strength I at the end of the motion of magnet armature 264MSP[n], saturation current I is exceededsat[n's]
90%。Refer to the saturation current I for next illustratingsatThe saturation electricity of the adaptation 512 of [n]
Stream, the time point t at the end of the motion of magnet armature 264 is determined based on thisMSP[n].Adaptation factor a calculating 510 and with
And come saturation current IsatThe adaptation 512 of [n] continuously continues during pump operation.
Inquiry 511 is set, checked in the inquiry, whether Adaptation factor a is less than Second Threshold S2.In this embodiment
In, Second Threshold S2At 0.7.In other words, inquiry 511 checks, the ratio for Adaptation factor a illustrated in equation 1
Whether 0.7 is less than.If, then terminate 520 emptyings.Conversely, if Adaptation factor a is higher than Second Threshold S2, then and then hold
The saturation current I that row is mentioned beforesatThe adaptation 512 of [n], the time at the end of the motion of magnet armature 264 is determined based on this
Point tMSP[n].In addition, thus change the duty ratio of emptying, i.e. the triggering stage 6 of stroke magnet armature pump 26 is as improving
The compensation of unshowned gas volume in pressure piping 32 and continue emptying when reduce 513.
If the current strength I at the end of the motion of magnet armature 264MSP[n] is less than first threshold S when comparing 5021, also
It is less than saturation current IsatThe 90% of [n], then the time point t at the end of the motion of magnet armature 264MSP[n] is still in pump
In the ascent stage 61 of curent change curve.In this case thus to saturation current Isat[n] is adjusted, i.e. is first used
Ramp functionTo control 530 ascent stages 61 in pump curent change curve.Pump curent change curve is in ascent stage
Rise in 61 with slope m, until it is in time point tsatSaturation stage 62 is changed on [n].Ascent stage 61 and stroke magnet
263 resistance RpWith inductance LpCorrelation, wherein, resistance RpWith inductance LpBusiness according to formula 2 passage time parameterExpression.
(formula 2).
Using with this time parameterRelated ramp function, to obtain pump curent change in ascent stage 61
The slope m being corrected of curvekorr。
For current strength IMSP[n] is in first threshold S1Under situation, in the slope m correctedkorrIt is full with reaching
With time point t during stage 62satThe duty ratio of the emptying of regulation 540 on the basis of [n].Relevant duty ratio and relevant stroke magnetic
The information of the manipulation 550 of body armature pump 26 is further passed on by pulsewidth modulation, so as on the basis of this information by before
The parameter obtained, i.e. current strength IMSPTime point t at the end of the motion of [n] and magnet armature 264MSP[n], saturation current
Isat[n] and time point t when reaching saturation stage 62sat[n] and make the slope m being correctedkorr, adjust 560 and be directed to stroke
Next stroke n of magnet armature pump 26 saturation current Isat[n], and and then implement 561 next stroke n.
562 saturation current I are stored now for this stroke nsatBefore [n] and repetition for method are provided as
One stroke n-1 saturation current Isat[n-1].In addition, equally 563 current strength I of storageMSP[n] and magnet armature 264 fortune
Time point t at the end of dynamicMSP[n].In another inquiry 570, on the one hand by the electricity at the end of the motion of magnet armature 264
Intensity of flow IMSP[n] and the 3rd threshold value S3Compare, and on the other hand by the time point t at the end of the motion of magnet armature 264MSP
[n] and the 4th threshold value S4Compare.If the current strength I at the end of the motion of magnet armature 264MSP[n] or time point tMSP[n] is low
In the 3rd threshold value S3Or the 4th threshold value S4, then terminate 520 emptyings.For such situation, i.e. either magnet armature 264
Current strength I at the end of motionMSP[n] or time point tMSP[n], all higher than the 3rd threshold value S3Or the 4th threshold value S4When, then
These are provided as in magnet armature 264 for the electric current at the end of previous stroke n-1 motion for the repetition of method
Intensity IMSP[n-1] and time point tMSP[n-1]。
Methods described is recursive, wherein, for the next stroke n provided in step 500 saturation current Isat
[n], the saturation current I with stroke n-1 beforesat[n-1] and it is directed to previous stroke n-1 motion knot in magnet armature 264
Current strength I during beamMSP[n-1] is related, and is obtained by following formula 3：
(formula 3).
Here, r represents rated value, the rated value is 0.5 in this embodiment and assume that as maximum 1.
Recursive method repeats so length, otherwise until determined in comparing 502, at the end of the motion of magnet armature 264
Current strength IMSP[n] is in first threshold S1On, or until terminate 520 emptyings.
Figure 3 illustrates the multiple electric current I [n for the stroke n that five successives are directed in the stage 6 is triggered1]、I
[n2]、I[n3]、I[n4] and I [n5] the change curve relevant with time t, the electric current is according to one in the present inventive method
Individual embodiment is controlled in saturation stage 62.In addition, local minimum value 71,72,73,74 and 75 is bent in pump curent change
Shown in line, the end of the motion of these local minimum value mark magnet armatures 264.For the first stroke n1, saturation current
Isat[n1] be 2.2A and reach Isat[n1] when time point tsat[n1] it is 0.2 second.More precisely, saturation current I is reachedsat
[n1] time point tsat[n1] separate ascent stage 61 and saturation stage 62.In addition, it is furthermore observed that it is directed to the first row
Journey n1Electric current I [n1] change curve, therefore people determine, the time point t at the end of the motion of magnet armature 264MSP
[n1] on corresponding local minimum value 71, in ascent stage 61 be about 0.1 second.At the end of the motion of magnet armature 264
Current strength IMSP[n1], local minimum value 71 is corresponded in this context and be about 1.7A.Thus cause, for
One stroke n1The current strength I at the end of the motion of magnet armature 264MSP[n1], corresponding one is about the 77% of saturation current
Value and be therefore less than first threshold S1, the first threshold is the 90% of saturation current in this embodiment.Passed by described
The method returned is have adjusted in saturation stage for the second stroke n2Electric current I [n2].Corresponding explanation is also applied for third trip
n3With fourth line journey n4Electric current I [n3] and I [n4]。
If conversely, it is observed that it is directed to fifth line journey n5Electric current I [n5], then people's determination, local minimum value 75
And therefore also have magnet armature 264 move at the end of time point tMSP[n5] it is in for 0.22 second and therefore saturation stage
In 62.It is worth the saturation current I for 1.5Asat[n5] and about 1.4A magnet armature 264 motion at the end of current strength
IMSP[n5], for fifth line journey n5It is closer to each other.If calculate the two current strength Isat[n5] and IMSP[n5The ratio between], that
Determine, the current strength I at the end of the motion of magnet armature 264MSP[n5], it is saturation current Isat[n5] about 93% and with
This is correspondingly in first threshold S in comparing 5021On.Result is abundant adjustment saturation current Isat[n5], thus magnet electricity
Time point t at the end of the motion of pivot 264MSP[n5] be in saturation stage 62.
Claims (11)
1. one kind is used for the method for running stroke magnet armature pump (26), wherein, in the armature of the trip magnet armature pump (26)
Time point (t at the end of motionMSP[n]) on the basis of controlling pump curent change curve saturation stage (62).
2. in accordance with the method for claim 1, it is characterised in that so control electric current (I [n]), i.e. so that armature movement knot
Time point (t during beamMSP[n]) it is in the saturation stage (62) of pump curent change curve.
3. according to the method described in claim 1 or 2, it is characterised in that occur the saturation stage (62) from stroke (n-1) to
The change of stroke (n).
4. according to the method described in any one of claims 1 to 3, it is characterised in that (510) Adaptation factor (a) is calculated, so as to true
Time point (the t at the end of fixed (512) armature movementMSP[n])。
5. in accordance with the method for claim 4, it is characterised in that it is described that (510) are continuously calculated during pump operation
Adaptation factor (a).
6. according to the method described in any one of claim 4 or 5, it is characterised in that carried on the basis of the Adaptation factor (a)
The repetitive rate of the pump curent change curve (I [n]) during high (511) emptying.
7. in accordance with the method for claim 6, it is characterised in that in order to improve the repetitive rate, change (513) duty ratio.
8. according to the method described in any one of claim 1 to 7, it is characterised in that ramp function(530) are set to be used for
The ascent stage (61) of controlling pump curent change curve.
9. a kind of computer program, it is arranged for, and performs according to each of the method described in any one of claim 1 to 8
Step.
10. a kind of storage medium that can be machine-readable, is stored according to the computer program described in claim 9 thereon.
11. a kind of controller of electronics (4), it is arranged for, by the method described according to any one of claim 1 to 8
Run the stroke magnet diaphragm pump (26).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016217842.3A DE102016217842A1 (en) | 2016-09-19 | 2016-09-19 | Method for operating a Hubmagnetankerpumpe for return promotion in a discharge phase |
| DE102016217842.3 | 2016-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842488A true CN107842488A (en) | 2018-03-27 |
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ID=61302254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710841384.3A Pending CN107842488A (en) | 2016-09-19 | 2017-09-18 | The method for running the stroke magnet armature pump for returning to conveying in empty stage |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20180031596A (en) |
| CN (1) | CN107842488A (en) |
| DE (1) | DE102016217842A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648053A (en) * | 2019-10-11 | 2021-04-13 | 罗伯特·博世有限公司 | Method for operating a system for delivering and metering a reducing agent solution to at least one SCR catalyst |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018213382A1 (en) | 2018-08-09 | 2020-02-13 | Robert Bosch Gmbh | Method for operating a conveyor module of an SCR catalyst system |
| DE102018222731A1 (en) * | 2018-12-21 | 2020-06-25 | Robert Bosch Gmbh | Method of operating a pump and system with such a pump |
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| CN102710212A (en) * | 2012-06-11 | 2012-10-03 | 桂林电子科技大学 | Improved iterative learning control method and control system for permanent magnet linear synchronous motor |
| CN103161549A (en) * | 2011-12-15 | 2013-06-19 | 罗伯特·博世有限公司 | Method for heating conveying module in SCR catalyst system |
| DE102011088701A1 (en) * | 2011-12-15 | 2013-06-20 | Robert Bosch Gmbh | Method for monitoring armature movement of piston magnet pump, particularly piston membrane pump in conveying module of selective catalytic reduction-catalyst system, involves measuring pump current waveform over time |
| CN103518241A (en) * | 2011-03-17 | 2014-01-15 | 大陆汽车有限公司 | Modified electrical actuation of actuator for determining the time at which armature stops |
| DE102013207345A1 (en) * | 2013-04-23 | 2014-10-23 | Robert Bosch Gmbh | Method for operating a reciprocating pump |
-
2016
- 2016-09-19 DE DE102016217842.3A patent/DE102016217842A1/en not_active Withdrawn
-
2017
- 2017-09-18 KR KR1020170119749A patent/KR20180031596A/en not_active Application Discontinuation
- 2017-09-18 CN CN201710841384.3A patent/CN107842488A/en active Pending
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| US4005002A (en) * | 1973-08-06 | 1977-01-25 | Hoffmann-La Roche Inc. | Apparatus for measuring substrate concentrations |
| US20030023368A1 (en) * | 2001-06-19 | 2003-01-30 | Meyer Garth Michael | Method for quantifying oxygen stored in a vehicle emission control device |
| CN103518241A (en) * | 2011-03-17 | 2014-01-15 | 大陆汽车有限公司 | Modified electrical actuation of actuator for determining the time at which armature stops |
| CN103161549A (en) * | 2011-12-15 | 2013-06-19 | 罗伯特·博世有限公司 | Method for heating conveying module in SCR catalyst system |
| DE102011088701A1 (en) * | 2011-12-15 | 2013-06-20 | Robert Bosch Gmbh | Method for monitoring armature movement of piston magnet pump, particularly piston membrane pump in conveying module of selective catalytic reduction-catalyst system, involves measuring pump current waveform over time |
| CN102710212A (en) * | 2012-06-11 | 2012-10-03 | 桂林电子科技大学 | Improved iterative learning control method and control system for permanent magnet linear synchronous motor |
| DE102013207345A1 (en) * | 2013-04-23 | 2014-10-23 | Robert Bosch Gmbh | Method for operating a reciprocating pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648053A (en) * | 2019-10-11 | 2021-04-13 | 罗伯特·博世有限公司 | Method for operating a system for delivering and metering a reducing agent solution to at least one SCR catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016217842A1 (en) | 2018-03-22 |
| KR20180031596A (en) | 2018-03-28 |
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Application publication date: 20180327 |