CN107013286A - A kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus - Google Patents
A kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus Download PDFInfo
- Publication number
- CN107013286A CN107013286A CN201710385294.8A CN201710385294A CN107013286A CN 107013286 A CN107013286 A CN 107013286A CN 201710385294 A CN201710385294 A CN 201710385294A CN 107013286 A CN107013286 A CN 107013286A
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- China
- Prior art keywords
- air
- fuel
- fuel oil
- dpf
- diesel engine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- 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
- Y02T10/40—Engine management systems
Abstract
The present invention discloses a kind of diesel engine DPF blast pipes fuel oil and air pre-mixing closes injection apparatus, and the device includes air supply pump, fuel delivery electromagnetic pump, fuel oil and air mixer, pressure jet apparatus, fuel pipe and air pipe line.The present invention accurately controls to supply the pressure of air by air supply pump, by controlling the driving frequency of fuel delivery electromagnetic pump to realize the accurate control of distributive value, meet and required with diesel emission limit value, safe and reliable emission control is realized under the various operating conditions of diesel engine, it is adapted to the dpf regeneration system of various tailpipe oil spouts, the dpf regeneration for realizing system by ECU is effectively demarcated, and meets various DPF in-use automotives, state six, non-rice habitats DPF product demands at present.
Description
Technical field
The present invention relates to exhaust emissions of diesel engine post-process field, more particularly to a kind of diesel engine DPF blast pipes fuel oil and
Air pre-mixing closes injection apparatus.
Background technology
In recent years, continuously there is haze phenomenon in each big city of China, seriously endangers health of people, the international shape of influence China
As.Operationally, its pollutant is soot particulate PM and nitrogen oxide NOx to diesel vehicle, and wherein PM discharges are the several of gasoline engine
Ten times.Diesel engine particle catcher (DPF) technology is considered as post-processing closest to the diesel particulate of practical and industrialization
Technology, its key technology is filter material and filter regeneration, and renovation process and its control strategy are filter regenerations
Technological difficulties.Conventional fuel oil and air pre-mixing close injection apparatus and also there is following deficiency：First, fuel oil and air can not be mixed well
Close, because fuel pressure and gas pressure unmatched cause mixing quality uneven, influence regeneration temperature control effect；2nd, can not
Realize the accurate control to fuel injection amount.
The content of the invention
It is an object of the invention to close injection apparatus by a kind of diesel engine DPF blast pipes fuel oil and air pre-mixing, to solve
The problem of certainly background section above is mentioned.
For up to this purpose, the present invention uses following technical scheme：
A kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus, and it includes air supply pump, fuel delivery
Electromagnetic pump, fuel oil and air mixer, pressure jet apparatus, fuel pipe and air pipe line；The air supply pump and fuel oil and
Air mixer is connected, for carrying out air supply by the driving of DPF ECUs；The fuel delivery electromagnetic pump and fuel oil and
Air mixer is connected, for draw fuel, and is pressurizeed before fuel oil injection, by controlling driving frequency to control fuel oil to spray
The amount of penetrating；The pressure jet apparatus connection fuel oil and air mixer.
Especially, the air supply pump uses brushed DC pump, and its pressure for supplying air is arranged according to different diesel engines
Put capable selection into.
Especially, the fuel delivery electromagnetic pump uses pulse electromagnetic pump, and driving frequency is controlled by pulse width modulation,
By controlling driving frequency to control fuel injection amount.
Especially, the power of the pulse electromagnetic pump is 100kW, and the peak point current produced during work is 8A-10A, normally
Operating current is 3A-4A.
It is combustion-supporting that diesel engine DPF blast pipes fuel oil proposed by the present invention and air pre-mixing conjunction injection apparatus meet blast pipe oil spout
Dpf regeneration spraying system demand, accurately controls to supply the pressure of air, by controlling fuel delivery electromagnetism by air supply pump
The driving frequency of pump realizes the accurate control of distributive value, meets and is required with diesel emission (PM, CO, HC) limit value, in diesel oil
Safe and reliable emission control is realized under the various operating conditions of machine, is adapted to the dpf regeneration system of various tailpipe oil spouts, is led to
Cross ECU and realize that the dpf regeneration of system is effectively demarcated, meet various DPF in-use automotives, state six, non-rice habitats DPF products at present
Demand.
Brief description of the drawings
Fig. 1 is that diesel engine DPF blast pipes fuel oil provided in an embodiment of the present invention and air pre-mixing are closed injection apparatus structure and shown
It is intended to；
Fig. 2 is the graph of a relation of fuel mass flow provided in an embodiment of the present invention and injection frequency.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the more thorough of the disclosure understanding
Comprehensively.It should be noted that when an element is considered as " connection " another element, it can be directly to another
Element may be simultaneously present centering elements.Unless otherwise defined, all of technologies and scientific terms used here by the article with
The implication that the those skilled in the art for belonging to of the invention are generally understood that is identical.Made in the description of the invention herein
Term is intended merely to describe the purpose of specific embodiment, it is not intended that in the limitation present invention.Term as used herein
" and/or " include the arbitrary and all combination of one or more related Listed Items.
It refer to shown in Fig. 1, Fig. 1 is that diesel engine DPF blast pipes fuel oil provided in an embodiment of the present invention and air pre-mixing are closed
Injection apparatus structural representation.In figure
Diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus 100 and specifically include air supply in the present embodiment
Pump 101, fuel delivery electromagnetic pump 102, fuel oil and air mixer 103, pressure jet apparatus 104, fuel pipe and air pipe line；
The air supply pump 101 is connected with fuel oil and air mixer 103, for carrying out air by the driving of DPF ECUs 105
Supply；The fuel delivery electromagnetic pump 102 is connected with fuel oil and air mixer 103, for draw fuel, and in fuel oil injection
It is preceding to be pressurizeed, by controlling driving frequency to control fuel injection amount；The connection fuel oil of pressure jet apparatus 104 and air mixer
103.The pressure jet apparatus 104 is arranged on before DOC catalyst converters 106, realizes that fuel oil sprays, fuel oil ejection function is periodically
The fuel oil being atomized is ejected into blast pipe, the fuel oil being atomized passes through the oxidation heat liberation of DOC catalyst converters 106, the heat of generation is passed through
Cross the regeneration that CDPF catalyst converters 107 carry out carbon particle.Fuel oil and air mixer 103 can carry out the mixing of fuel oil and air,
Prevent because fuel pressure and gas pressure unmatched cause mixing quality uneven and influence regeneration temperature control effect.In addition,
108 be engine in Fig. 1, and 109 be fuel tank, and 110 be low temperature heating device, and 111 be alarm lamp, and 112 be exhaust temperature sensor,
113 be differential pressure pickup.
The air supply pump 101 uses brushed DC pump in the present embodiment, and it supplies the pressure of air according to difference
Diesel emission is selected.The fuel delivery electromagnetic pump 102 uses pulse electromagnetic pump, controls to drive by pulse width modulation
Dynamic frequency, by controlling driving frequency to control fuel injection amount.Specifically, fuel oil and air are fully mixed in hybrid chamber
Close, gaseous mixture carries out chemical heat release on DOC catalyst converters 106 and produces energy, realizes the regeneration temperature of CDPF catalyst converters 107
Optimal Control effect.Fuel-injected precision directly influences the effect of regeneration temperature control, so as to have influence on soot conversion effect
Rate.Flow calibration experiment has been carried out to fuel oil injection metering valve, tested under specified fuel-injection pressure under different injection pulse widths
Flow test.The fuel delivery electromagnetic pump 102 uses pulse electromagnetic pump, has the advantages that strength, fast response time.Pulse electricity
The major function of magnetic pumping is the pressurization before draw fuel and fuel oil injection, and oil spout deferent mainly provides buffer channel to high pressure fuel
With the effect of steady pressure；Atomizer finally plays the effect of atomized fuel.Pulse electromagnetic pump power is in the present embodiment
100kW, the peak point current produced during work is 8A-10A, and running current is 3A-4A, and type of drive is the pulse of single-chip microcomputer
The electromagnetic pump drive circuit of width modulated (PWM) control, using power switch pipe, with high pressure resistant, high current advantage.Pulse electricity
Fuel injection amount, injection frequency and the PWM duty cycle of magnetic pumping are to influence the key factor of fuel atomization effect, and dutycycle needs to set
Determine reasonable value, fuel oil injection frequency only reaches that fuel oil just starts atomization after certain frequency, and experiment is from pulse electromagnetic pump
The fixed shut-in time is 25ms, and Flow-rate adjustment is carried out by adjusting opening time pulsewidth, that is, by controlling injection frequency to change
The mode for becoming emitted dose realizes that the fuel oil of pulse electromagnetic pump is accurately controlled, and fully ensures that the atomization quality of fuel oil.Fuel oil sprays
Amount, injection frequency relation are as shown in the table,
| Frequency/(Hz) | Mass flow/(g/min) |
| 1.9 | 6.1 |
| 2.1 | 7.1 |
| 2.35 | 7.6 |
| 2.7 | 8.7 |
| 3.1 | 10 |
| 3.6 | 11.8 |
| 4.4 | 14.8 |
| 5.7 | 18.2 |
| 8 | 22.4 |
| 9.5 | 30.5 |
| 13 | 40.2 |
Fig. 2 is the graph of a relation of fuel mass flow provided in an embodiment of the present invention and injection frequency.
Technical scheme meets the combustion-supporting dpf regeneration spraying system demand of blast pipe oil spout, passes through air supply pump
The pressure of accurate control supply air, by controlling the driving frequency of fuel delivery electromagnetic pump to realize the accurate control of distributive value,
Meet with the requirement of diesel emission (PM, CO, HC) limit value, safe and reliable row is realized under the various operating conditions of diesel engine
Control is put, is adapted to the dpf regeneration system of various tailpipe oil spouts, the dpf regeneration for realizing system by ECU has criterion
It is fixed, meet various DPF in-use automotives, state six, non-rice habitats DPF product demands at present.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (ReadA-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel, which would not require any inventive effort, can associate other embodiments of the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (4)
1. a kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus, it is characterised in that including air supply pump,
Fuel delivery electromagnetic pump, fuel oil and air mixer, pressure jet apparatus, fuel pipe and air pipe line；The air supply pump
It is connected with fuel oil and air mixer, for carrying out air supply by the driving of DPF ECUs；The fuel delivery electromagnetic pump
It is connected, is pressurizeed for draw fuel, and before fuel oil injection, by controlling driving frequency control with fuel oil and air mixer
Fuel injection amount processed；The pressure jet apparatus connection fuel oil and air mixer.
2. diesel engine DPF blast pipes fuel oil according to claim 1 and air pre-mixing close injection apparatus, it is characterised in that
The air supply pump uses brushed DC pump, and its pressure for supplying air is selected according to different diesel emissions.
3. the diesel engine DPF blast pipes fuel oil and air pre-mixing according to any one of claim 1 or 2 close injection apparatus, its
It is characterised by, the fuel delivery electromagnetic pump uses pulse electromagnetic pump, driving frequency is controlled by pulse width modulation, passes through control
Driving frequency processed controls fuel injection amount.
4. diesel engine DPF blast pipes fuel oil according to claim 3 and air pre-mixing close injection apparatus, it is characterised in that
The power of the pulse electromagnetic pump is 100kW, and the peak point current produced during work is 8A-10A, and running current is 3A-4A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385294.8A CN107013286A (en) | 2017-05-26 | 2017-05-26 | A kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385294.8A CN107013286A (en) | 2017-05-26 | 2017-05-26 | A kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107013286A true CN107013286A (en) | 2017-08-04 |
Family
ID=59451144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710385294.8A Pending CN107013286A (en) | 2017-05-26 | 2017-05-26 | A kind of diesel engine DPF blast pipes fuel oil and air pre-mixing close injection apparatus |
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| Country | Link |
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| CN (1) | CN107013286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848042A (en) * | 2019-10-12 | 2020-02-28 | 江苏大学 | Device for removing DPF particles and ash through gas-liquid multiphase injection and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178020A (en) * | 2006-11-10 | 2008-05-14 | 烟台华龙商用机器有限公司 | Diesel engine exhaust emission purifying system |
| CN103314193A (en) * | 2011-01-17 | 2013-09-18 | 田纳科汽车营运公司 | Miniature regeneration unit |
| CN104912631A (en) * | 2015-06-06 | 2015-09-16 | 杭州携蓝环保科技有限公司 | Active regeneration system of diesel particulate filter |
| CN105008683A (en) * | 2012-12-10 | 2015-10-28 | 沃尔沃卡车公司 | Exhaust pipe fuel injector |
| CN105026712A (en) * | 2013-02-27 | 2015-11-04 | 天纳克汽车经营有限公司 | Burner with air-assisted fuel nozzle and vaporizing ignition system |
-
2017
- 2017-05-26 CN CN201710385294.8A patent/CN107013286A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178020A (en) * | 2006-11-10 | 2008-05-14 | 烟台华龙商用机器有限公司 | Diesel engine exhaust emission purifying system |
| CN103314193A (en) * | 2011-01-17 | 2013-09-18 | 田纳科汽车营运公司 | Miniature regeneration unit |
| CN105008683A (en) * | 2012-12-10 | 2015-10-28 | 沃尔沃卡车公司 | Exhaust pipe fuel injector |
| CN105026712A (en) * | 2013-02-27 | 2015-11-04 | 天纳克汽车经营有限公司 | Burner with air-assisted fuel nozzle and vaporizing ignition system |
| CN104912631A (en) * | 2015-06-06 | 2015-09-16 | 杭州携蓝环保科技有限公司 | Active regeneration system of diesel particulate filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848042A (en) * | 2019-10-12 | 2020-02-28 | 江苏大学 | Device for removing DPF particles and ash through gas-liquid multiphase injection and control method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170804 |
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| RJ01 | Rejection of invention patent application after publication |