CN109488419A - Burner oil gas mixing unit applied to dpf regeneration - Google Patents
Burner oil gas mixing unit applied to dpf regeneration Download PDFInfo
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- CN109488419A CN109488419A CN201910039702.3A CN201910039702A CN109488419A CN 109488419 A CN109488419 A CN 109488419A CN 201910039702 A CN201910039702 A CN 201910039702A CN 109488419 A CN109488419 A CN 109488419A
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- Prior art keywords
- air
- high pressure
- mixing
- dpf regeneration
- oil
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Classifications
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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
- F01N3/02—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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to the exhaust systems of diesel engine, and in particular to the burner oil gas mixing unit applied to dpf regeneration.The burner oil gas mixing unit applied to dpf regeneration includes: mixing chamber, and the mixing chamber is surrounded by mixing arrangement shell and formed, the hollow formation plenum chamber of mixing arrangement enclosure interior；Air-fuel mixture hole is densely covered in the mixing arrangement inner walls, the both ends in the air-fuel mixture hole are connected to the plenum chamber and mixing chamber respectively；The exhaust end of high pressure admission component, the high pressure admission component is connected to the plenum chamber；The oil outlet of high pressure oil intake assembly, the high pressure oil intake assembly is connected in the mixing chamber.The device can provide the fuel-air mixture of high quality for burner, can promote delivery temperature for after-treatment system, moreover it is possible to reduce the generation of secondary pollution.
Description
Technical field
The present invention relates to the exhaust systems of diesel engine, and in particular to the burner oil gas mixing unit applied to dpf regeneration.
Background technique
Diesel engine is widely used in traffic and transport field with its good economy and dynamic property.The tail gas of diesel engine
In mainly include the harmful pollutions such as carbon monoxide (CO), hydrocarbon (HC), particle (PM) and nitrogen oxides (NOx)
Object, wherein the discharge of particle (PM) and nitrogen oxides (NOx) is higher, has very big harm to environment and human body, therefore
Various countries' emission regulation is increasingly stringenter the discharge limitation of diesel engine PM and NOx.In addition to being changed using measure in necessary machine
Except kind burning, it is necessary to in diesel exhaust PM and NOx take and post-process control techniques outside machine, can just be effectively reduced
The noxious emission amount of the two.And diesel particulate trap DPF (Diesel Particulate Filter) is to reduce PM row
One of main aftertreatment technologies measure put, arresting efficiency can reach 90% or more.But with the extension of working time, filtering
The particulate matter accumulated in vivo can increase, and engine exhaust back pressure can rise, and influence the normal work of diesel engine, need using burning
Etc. modes particulate matter is removed, i.e. regeneration techniques.According to the difference of regeneration method, regeneration can be divided into initiative regeneration and passive
Regeneration；Wherein initiative regeneration, which just refers to by way of outside energy inputs, removes the particulate matter in DPF, is often referred to by outer
Adding energy to improve gas flow temperature makes the regeneration of burning particulate matter to ignition temperature of particulates (500 DEG C -600 DEG C).Ratio at present
Wide application has the combustion-supporting regeneration of oil spout, microwave heating regeneration, electric heating regeneration, contra-injection regeneration and infrared heating again
It is raw etc..After-treatment system DPF includes oxidation catalytic converter DOC at present, and DOC can not only aoxidize the CO and HC in exhaust,
Reduce disposal of pollutants, additionally it is possible to delivery temperature is promoted, to reach the regeneration temperature of DPF particle burning.However the work ignition of DOC
Temperature also there are certain requirements, if engine generates lower delivery temperature, DOC entrance temperature is difficult to reach required temperature
The limit (250 DEG C -300 DEG C), initiative regeneration situation will be affected, so that DOC can not support regenerative process, therefore be vented
Need to improve the state of temperature before DOC in the case that temperature is lower and unstable.
The combustion-supporting regeneration of oil spout is one kind of initiative regeneration, and main application apparatus is exactly oil spout booster burners, utilizes burning
Device heating, keeps the normal work of DOC, so that temperature needed for realizing dpf regeneration, efficiently steady to reach promotion after-treatment system
Surely the purpose to work.However in order to run burner effectively, it is desirable to provide fuel and air, in suitable volume and pressure
Under, the air-fuel mixture of high quality can not only operating temperature needed for promotion rapidly and efficiently, additionally it is possible to reduce fuel-air matching not
When caused burning deteriorates bring secondary pollution.Existing burner injection process is that fuel oil is sucked out in oil transfer pump from fuel oil,
Oil gas in burner is sprayed by atomizer after oil pipeline, high-pressure oil pump just to start to be mixed.In this case, it sprays
Oil, mixing, three processes of burning almost occur in a flash same, therefore it is good to form the diesel oil of all spray people all
Mixture combustion is highly difficult, therefore this is often had the disadvantage that: for will lead to oil for the biggish diesel oil of viscosity
Gas mixing is uneven, burns insufficient, causes fuel economy bad；Secondly burning unevenly will lead to the temperature change before DOC
Fluctuate it is larger, be easy to cause DOC functional reliability reduction, affected to the regeneration of DPF, last mixture combustion is unevenly
Secondary pollution can be brought, the work load of after-treatment system is increased.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides the burner air-fuel mixture for being applied to dpf regeneration
Device, the device can provide the fuel-air mixture of high quality for burner, delivery temperature can be promoted for after-treatment system, also
It can be reduced the generation of secondary pollution.
The technical solution provided according to the present invention, it is described to be applied to applied to the burner oil gas mixing unit of dpf regeneration
The burner oil gas mixing unit of dpf regeneration includes:
Mixing chamber, the mixing chamber are surrounded by mixing arrangement shell and are formed, the hollow formation high pressure of mixing arrangement enclosure interior
Gas chamber；Be densely covered with air-fuel mixture hole in the mixing arrangement inner walls, the both ends in the air-fuel mixture hole respectively with the height
Plenum chamber is connected to mixing chamber；
The exhaust end of high pressure admission component, the high pressure admission component is connected to the plenum chamber；
The oil outlet of high pressure oil intake assembly, the high pressure oil intake assembly is connected in the mixing chamber.
Further, the high pressure admission component includes high-pressure air pipe and air control shutter, and the air control shutter is set to
On the high-pressure air pipe；One end of the high-pressure air pipe can suck air, and the other end is the exhaust of the high pressure admission component
End.
Further, the high pressure oil intake assembly includes high-pressure oil pipe, fuel tank, fuel pump and atomizer；The high pressure oil
One end of pipe connects the fuel tank, and the other end connects the atomizer, and the atomizer is the fuel-displaced of the high pressure oil intake assembly
End；The fuel pump is set on the high-pressure oil pipe.
Further, the side in the mixing chamber close to the air-fuel mixture hole is equipped with filter layer.
Further, mesh is filled in the mixing chamber.
Further, the lower end of the mixing chamber gradually tapers up to form tapered mouth, and the tapered mouth is equipped with injection micropore,
Spark plug is equipped at the injection micropore.
From the above as can be seen that the burner oil gas mixing unit provided by the invention applied to dpf regeneration, and show
There is technology to compare and have following advantages:
The present invention be suitable for installing additional oil spout booster burners initiative regeneration stage of after-treatment device DPF, fuel oil and air by
Pressure duct is injected into mixing chamber, improves atomization quality；Pass through one layer of filtering layer and air-fuel mixture hole, pressure-air simultaneously
It is further purified, and air is divided into a large amount of small gas group；Height into uniform mixing chamber, with atomizer ejection
The effect of compression ignition oil, shock are fragmented into more tiny fuel particles, improve mixed gas quality.Mixed gas quality improves not only can be with
It burns more abundant, reduces the generation of secondary pollution, and heating efficiency can also be promoted, burner temperature rise rate is promoted, to DPF
The efficient stable of regenerative process provides effective guarantee.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
1. outer housing, 2. inner housings, 3. plenum chambers, 4. mixing chambers, 5. filter layers, 6. injection micropores, 7. nets
Shape object, 8. air-fuel mixture holes, 9. high-pressure oil pipes, 10. fuel pumps, 11. atomizers, 12. air control shutters, 13. high pressures
Tracheae, 14. spark plugs, 15. fuel tanks.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.Wherein identical components are presented with like reference characters.It needs to illustrate
It is that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the direction in attached drawing.It uses
Word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
The present invention provides a kind of burner oil gas mixing unit applied to dpf regeneration, as shown in Figure 1, described be applied to
The burner oil gas mixing unit of dpf regeneration includes:
Mixing chamber 4, the mixing chamber 4 is surrounded by mixing arrangement shell to be formed, and the hollow formation of mixing arrangement enclosure interior is high
Plenum chamber 3, the plenum chamber 3 are formed by outer housing 1 and inner housing 2 encirclement of the mixing arrangement shell；The inner housing 2
On be densely covered with air-fuel mixture hole 8, the both ends in the air-fuel mixture hole 8 are connected to the plenum chamber 3 and mixing chamber 4 respectively；Institute
Outer housing 1 is stated equipped with high pressure admission mouth；
The exhaust end of high-pressure air pipe 13, the high-pressure air pipe 13 connects the high pressure admission mouth；It is also set on the high-pressure air pipe 13
There is an air control shutter 12, the air control shutter 12 can control admission pressure and flow by the air control shutter 12 to described
Plenum chamber 3 inputs pressure-air；
The oil outlet of high-pressure oil pipe 9, the high-pressure oil pipe 9 protrudes into mixing chamber from the high pressure oil inlet on the mixing arrangement shell
In 4；One end of the high-pressure oil pipe 9 connects the fuel tank 15, and the other end connects the atomizer 11, and the atomizer 11 is institute
State the oil outlet of high pressure oil intake assembly；The fuel pump 10 is set on the high-pressure oil pipe 9, thus defeated into the mixing chamber 4
Enter high pressure oil.
It is to be understood that the mixing arrangement shell is metal shell, outer housing 1 and inner housing 2 are surrounded described in formation
Plenum chamber 3 in mixing arrangement shell, the lower end of the mixing chamber 4 gradually taper up to form tapered mouth, set on the tapered mouth
There is injection micropore 6, is equipped with spark plug 14 at the injection micropore 6.The mixing chamber 4 and plenum chamber 3 collectively form described mixed
Close the composite cavity structure of device housing.
Pressure-air is pressed into the plenum chamber 3 from the high-pressure air pipe 13, then from the oil gas on plenum chamber 3
Mix aperture 8 is pressed into the mixing chamber 4；High pressure oil is pressed into the mixing chamber 4 from the high-pressure oil pipe 9；In the mixing
In room 4, gas can quickly be cut into the stingy group of several high pressures after flowing through a large amount of air-fuel mixture hole 8, and the high pressure is small
Air mass body can quickly and sufficiently break up the high pressure fuel sprayed into mixing chamber 4 for molecule, to reach air-fuel mixture
Purpose.
And in mixing chamber 4, entire space uniform fills mesh 7, can be made of wire mesh or felt, can be into
One step promotes the air-fuel mixture in uniform mixing chamber 4 and is not easy that it is allowed to be compounded to form new oil droplet.
It is understood that the mixing chamber 4 is pressure-air and the mixed uniformly place of fuel oil, air is through high-pressure air pipe
13 enter after plenum chamber 3, are further filtered by filtering layer, are divided into later by air-fuel mixture hole 8 stingy
Body group mixes with the fuel-oil atmozation sprayed by atomizer 11, and small gas group can further improve air-fuel mixture depth, improves mixing
Quality；The injection micropore 6 will can export to enter in the gaseous mixture of uniform mixing chamber 4 [4] carries out combustion heat release in combustion chamber.
The course of work of the invention are as follows:
Air control shutter 12] it opens, pressure-air enters plenum chamber 3 by high-pressure air pipe 13, passes through filter layer 5 and air-fuel mixture
Hole 8, into mixing chamber 4, at the same time, fuel pump 10 sucks fuel oil in atomizer 11 through high-pressure oil pipe 9 from fuel tank 15, it
It sprays into mixing chamber 4 and is uniformly mixed with the air entered afterwards, form uniform oil gas mixture, spray micropore by terminal later
6 spray, through 14 ignition of spark plug, to release heat.
It should be understood by those ordinary skilled in the art that: the above is only a specific embodiment of the present invention, and
It is not used in the limitation present invention, all any modification, equivalent substitution, improvement and etc. within purport of the invention, done should all include
Within protection scope of the present invention.
Claims (6)
1. being applied to the burner oil gas mixing unit of dpf regeneration, which is characterized in that the burner applied to dpf regeneration
Oil gas mixing unit includes:
Mixing chamber (4), the mixing chamber (4) is surrounded by mixing arrangement shell to be formed, the hollow shape of mixing arrangement enclosure interior
At plenum chamber (3)；It is densely covered in the mixing arrangement inner walls air-fuel mixture hole (8), the two of the air-fuel mixture hole (8)
End is connected to the plenum chamber (3) and mixing chamber (4) respectively；
The exhaust end of high pressure admission component, the high pressure admission component is connected to the plenum chamber (3)；
The oil outlet of high pressure oil intake assembly, the high pressure oil intake assembly is connected in the mixing chamber (4).
2. being applied to the burner oil gas mixing unit of dpf regeneration as described in claim 1, which is characterized in that the high pressure
Air intake assembly includes high-pressure air pipe (13) and air control shutter (12), and the air control shutter (12) is set to the high-pressure air pipe
(13) on；One end of the high-pressure air pipe (13) can suck air, and the other end is the exhaust end of the high pressure admission component.
3. being applied to the burner oil gas mixing unit of dpf regeneration as described in claim 1, which is characterized in that the high pressure
Oil intake assembly includes high-pressure oil pipe (9), fuel tank (15), fuel pump (10) and atomizer (11)；One end of the high-pressure oil pipe (9)
It connects the fuel tank (15), the other end connects the atomizer (11), and the atomizer (11) is the high pressure oil intake assembly
Oil outlet；The fuel pump (10) is set on the high-pressure oil pipe (9).
4. being applied to the burner oil gas mixing unit of dpf regeneration as described in claim 1, which is characterized in that described mixed
It closes in room (4) and is equipped with filter layer (5) close to the side of the air-fuel mixture hole (8).
5. being applied to the burner oil gas mixing unit of dpf regeneration as described in claim 1, which is characterized in that the mixing
Mesh (7) are filled in room (4).
6. being applied to the burner oil gas mixing unit of dpf regeneration as described in claim 1, which is characterized in that the mixing
The lower end of room (4) gradually tapers up to form tapered mouth, and the tapered mouth is equipped with injection micropore (6), sets at the injection micropore (6)
There are spark plug (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039702.3A CN109488419A (en) | 2019-01-16 | 2019-01-16 | Burner oil gas mixing unit applied to dpf regeneration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039702.3A CN109488419A (en) | 2019-01-16 | 2019-01-16 | Burner oil gas mixing unit applied to dpf regeneration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488419A true CN109488419A (en) | 2019-03-19 |
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ID=65714708
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910039702.3A Pending CN109488419A (en) | 2019-01-16 | 2019-01-16 | Burner oil gas mixing unit applied to dpf regeneration |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120096734A (en) * | 2011-02-23 | 2012-08-31 | 인하대학교 산학협력단 | Burner for regeneration of diesel particulate filter |
| CN104136846A (en) * | 2012-09-28 | 2014-11-05 | 日野自动车株式会社 | Burner |
| CN205532788U (en) * | 2016-01-29 | 2016-08-31 | 中国人民解放军军事交通学院 | It sprays combustion -supporting regeneration facility of pure alcohol to be used for diesel engine exhaust particle to filter body |
| CN206439091U (en) * | 2016-12-29 | 2017-08-25 | 杭州恒浦环保科技有限公司 | Diesel exhaust aftertreatment regenerating unit |
| CN107956547A (en) * | 2016-10-15 | 2018-04-24 | 贵州黄帝车辆净化器有限公司 | Low temperature heating device for diesel motor exhaust purified treatment |
-
2019
- 2019-01-16 CN CN201910039702.3A patent/CN109488419A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120096734A (en) * | 2011-02-23 | 2012-08-31 | 인하대학교 산학협력단 | Burner for regeneration of diesel particulate filter |
| CN104136846A (en) * | 2012-09-28 | 2014-11-05 | 日野自动车株式会社 | Burner |
| CN205532788U (en) * | 2016-01-29 | 2016-08-31 | 中国人民解放军军事交通学院 | It sprays combustion -supporting regeneration facility of pure alcohol to be used for diesel engine exhaust particle to filter body |
| CN107956547A (en) * | 2016-10-15 | 2018-04-24 | 贵州黄帝车辆净化器有限公司 | Low temperature heating device for diesel motor exhaust purified treatment |
| CN206439091U (en) * | 2016-12-29 | 2017-08-25 | 杭州恒浦环保科技有限公司 | Diesel exhaust aftertreatment regenerating unit |
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Application publication date: 20190319 |
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