CN101518766A - Dual-medium nozzle - Google Patents
Dual-medium nozzle Download PDFInfo
- Publication number
- CN101518766A CN101518766A CN200910001360A CN200910001360A CN101518766A CN 101518766 A CN101518766 A CN 101518766A CN 200910001360 A CN200910001360 A CN 200910001360A CN 200910001360 A CN200910001360 A CN 200910001360A CN 101518766 A CN101518766 A CN 101518766A
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- CN
- China
- Prior art keywords
- nozzle
- jet hole
- chamber
- supply line
- aforesaid right
- Prior art date
- 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.)
- Pending
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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
- F01N3/08—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
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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
- 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
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a dual-medium nozzle used for atomizing liquid by means of pressure air, especially used for injecting urea solution to perform selective catalyctic reduction in waste gas system of internal combustion engine. The nozzle comprises at least a first nozzle mouth(11) and a second nozzle mouth(21), wherein the second nozzle mouth(21) is formed by an annular gap which is concentrically arranged relatively to the first nozzle mouth(11).
Description
Technical field
The present invention relates to a kind ofly especially for by means of pressure air liquid being atomized, especially for the dual-medium nozzle that sprays urea liquid in the waste gas system of internal combustion engine, wherein said nozzle has one first jet hole and one second jet hole.
Background technology
It is this that to be used for the dual-medium nozzle that liquid atomizes be known.Particularly this dual-medium nozzle is used for atomizing paint.For with urea-spray in the waste gas of internal combustion engine stream, adopt single hole or jet rose.Here in the hybrid chamber that is arranged on the front, producing aerosol.
Spraying therein by means of pressure air in the waste gas system of urea, adopt single-hole nozzle or jet rose at present, in these nozzles, the aerocolloidal formation of realization in the preceding structure assembly is installed one.This means that just the nozzle that passes through to be adopted distributes aerosol.In addition because can only there be less changeability at the geometry that jet hole adopted ejection angle.Jet rose also has another shortcoming, that is, this nozzle radially distributes aerosol and helps to cause aerosol to contact with tube wall thus.
The urea-spray system of known no pressure air is by utilizing initiatively (active) nozzle (pump) work.This means, active electric member must be installed on the flue gas leading of heat.Must cool off this member according to the temperature regulation of manufacturer.This is undertaken by cooling water usually.Obviously improved the complexity of nozzle system thus.Need obviously bigger structure space for installation and flexible pipe in addition.
Therefore, at the known dual-medium nozzle that is used for by the pressure air atomized liquid, disadvantageously, require bigger installing space, because this nozzle must comprise a preposition hybrid chamber.Disadvantageously, these nozzles have higher the number of components and very complicated configuration in this external known dual-medium nozzle.
Summary of the invention
The objective of the invention is, improve the dual-medium nozzle of type noted earlier like this, that is, can reduce required structure space and described nozzle and have band less parts structure quantity, that complexity is lower generally.In addition, also should be able to realize making economically such nozzle, in this nozzle, preferably in waste gas stream, just form aerosol.
According to the present invention, described purpose realizes by a kind of dual-medium nozzle according to claim 1.Other favourable form of implementation of the present invention provides in each dependent claims.
Spray in the dual-medium nozzle of urea liquid especially in this by the pressure air atomized liquid, especially for waste gas system at internal combustion engine, described nozzle has at least one first jet hole and one second jet hole, here particularly advantageously be, described second jet hole forms by an annulus, and described annulus is provided with one heart with respect to first jet hole.
Can guide liquid to be atomized by first jet hole thus, and, make the atomization of liquid and form required aerosol thus thereby when ejection liquid, lead to described pressure air by surrounding the annulus guide pressure air of described first jet hole with one heart.Must on the path that separates, described two media (urea liquid and pressure air) be supplied to described nozzle for this reason.
Therefore, this dual-medium nozzle is particularly advantageous for spraying into urea liquid with nitrogen oxides reduction in the waste gas system of internal combustion engine,, is used to spray urea liquid, particularly as according to the AdBlue of DIN70070, to carry out SCR that is.
First jet hole preferably links to each other with one first chamber and/or supply line, and wherein said first jet hole is by described chamber and/or supply line supply liquid to be atomized.
Described second jet hole is preferably with one second chamber and/or supply line links to each other and by described second chamber and/or supply line supplied with pressure air.
Therefore the basic principle of described nozzle is to carry out the mixing of each component to form with relevant therewith aerosol beyond member.Here pass through the liquid of the first chamber pilot tape atomizing.Described atomizing medium pressure air is by the supply of second chamber.Guide described atomizing medium around described first chamber.Form an annulus on nozzle tip, this annulus surrounds liquid to be atomized first jet hole from wherein flowing out with one heart.The atomizing medium of guide pressure air form is by described annulus.Carry out aerocolloidal formation in the nozzle outside thus, can advantageously reduce the complexity of member thus.
The second concentric jet hole particularly also can form by a plurality of less slits, slit section or opening, they are provided with one heart with first jet hole generally, promptly on a circle or a plurality of arc section, center on the described first jet hole setting, and form an annulus or an opening that is similar to the annulus generally.Here important is that second jet hole is concentric with first jet hole generally, to make the atomization of liquid of flowing out by means of the pressure air from the second concentric jet hole from first jet hole.
Described nozzle can be designed to all-in-one-piece.Described nozzle can pass through the metal powder injection manufactured, that is, by metal powder injection molded (MIM, Metal-Injection-Molding).Here cavity forms by plastic body when pouring member.Described plastic body is vaporized in the unsticking of back.Particularly adhesive is coordinated mutually with the material of plastic body for this reason.
In a preferred form of implementation, described designs of nozzles becomes multi-piece type, two-piece type particularly, be designed so that particularly one first member has first jet hole, and one second member surround described first member at least in part, thereby between first and second members, form described second jet hole.
Surround at least in part or around the form of implementation that acts on first member by second member, can between two members, form the annulus that constitutes described second jet hole simultaneously, described annulus surrounds described first jet hole with one heart, that is, first jet hole with respect to circle forms a concentric ring.
Described two jet holes preferably link to each other with a chamber and/or supply line respectively, and wherein said chamber and/or supply line have the join domain, particularly pipe joint that is used for flexible pipe, pipeline, flange etc.Described pipe joint particularly can be constructed like this, promptly, make the flexible pipe etc. can be by described pipe joint card jail suit, wherein said pipe joint can be designed to, make described pipe joint have the boss that is similar to barb, thereby flexible pipe can slippage, but particularly forms firm cooperation by forming the sealed and/or force closure of shape.
In a preferred form of implementation, cooling fin is set on member in the outside.For cooling component surface and member, that is, and in order to cool off described dual-medium nozzle and, to be provided with cooling fin in order to dispel the heat.
Described nozzle preferably has a thermal insulation layer in the outside, particularly described nozzle can have a ceramic coating.By a thermal insulation layer is set, a ceramic coating particularly is set, nozzle can be protected with effective and efficient manner, with the influence of the heat that prevents to be subjected to occur in the blast pipe of internal combustion engine.
Described nozzle is preferably by the metal powder injection method, and promptly (MIM Metal-Injection-Molding) makes by the metal powder injection method.
Thus, even also can adopt effective manufacture method for large batch of and/or technical demanding complex component with outstanding tolerance retentivity (Toleranzeinhaltung).
Described nozzle is preferably made by high temperature resistant and heat-staple material, because, when described nozzle is used for for internal combustion engine when blast pipe sprays urea liquid, as the AdBlue according to DIN70070, to carry out SCR (SCR), it is the highest 600 ℃ that the ambient temperature of nozzle can reach.Common this material belongs to and is difficult to mach metal group, and therefore can only process with expensive.This shortcoming can be utilized, and metal powder injection molded (MIM, manufacture method Metal-lnjection-Molding) overcomes.
Preferably to described member and/or can be designed to multi-piece type, particularly the nozzle of the complete assembling of two-piece type carries out unsticking and/or sintering and/or uses ceramic coated.
The nozzle of described member and/or the complete assembling that is made from multiple components is preferably densified in an other heat treatment.Can realize described material behavior thus.Described processing is meant sintering or roasting (Brennen).Then can apply a ceramic coating.
Described nozzle is preferably designed to multi-piece type, and wherein each member particularly can bond mutually.
Description of drawings
Illustrate and describe in detail below a plurality of embodiment of dual-medium nozzle of the present invention in the accompanying drawings with cutaway view.Wherein:
Fig. 1 illustrates first embodiment according to dual-medium nozzle of the present invention with cutaway view;
Fig. 2 illustrates second embodiment according to dual-medium nozzle of the present invention with cutaway view;
Fig. 3 illustrates the 3rd embodiment according to dual-medium nozzle of the present invention with cutaway view;
Fig. 4 illustrates the 4th embodiment according to dual-medium nozzle of the present invention with cutaway view;
Fig. 5 illustrates the 5th embodiment according to dual-medium nozzle of the present invention with cutaway view;
Fig. 6 illustrates the 6th embodiment according to dual-medium nozzle of the present invention with cutaway view.
The specific embodiment
The identical member of the different forms of implementation of dual-medium nozzle is represented with identical Reference numeral in each accompanying drawing.
Nozzle according to Fig. 1 is formed by two members 10,20.First member 10 has one first jet hole 11, and described first jet hole is supplied with liquid to be atomized by one first chamber 12, that is, under situation as the nozzle in the exhaust gas aftertreatment, the supply urea liquid.
The principle of this nozzle is beyond member each component to be mixed.Here by first chamber, 12 guiding liquid to be atomized.The atomizing medium pressure air is by 22 supplies of second chamber.Described atomizing medium is directed walking around first chamber 12.Form an annulus 21 on nozzle tip, atomizing medium is guided through this annulus.The arrangement form that is used to install the fixing hole 31,32 of described two members 10,20 or whole device can change according to installing space.The microscler arrangement form of fixing hole 31,32 is shown here.Nozzle being connected on the connecting pipe that is used for supplied with pressure air and urea liquid can realize by various method.Fig. 1 illustrates the receptacle that is used for screw element.The built-in receptacle that is used for flexible pipe in upper component in Fig. 2.The fixing of nozzle can pass through realizations such as bolt, rivet selectively.
Process internal thread in chamber 12,22, described internal thread is with acting on join domain to be connected, that be used for the supply line of liquid and pressure air.
In second embodiment according to Fig. 2, be provided be used to install be used for to first jet hole 11 supply liquid and be used for pipe joint 13,23 to the flexible pipe of second jet hole, 21 supplied with pressure air.Described pipe joint 13,23 has the heavy portion of cutting of annular, is engaged in securely on separately the pipe joint so that guarantee the flexible pipe of suit.Form of implementation according to Fig. 4 has such pipe joint equally.
For component surface and member 10 are cooled off, one or more fin 14,15 can be set, as shown in Figure 3 on upper component 10.The quantity of cooling fin 14,15 and size with and the position can with installing space and necessary cooling effectiveness, promptly the heat transmission of environment necessity is complementary towards periphery.
For the heat input that reduces to take place by the contact area with the flue gas leading of the exhaust gas aftertreatment of internal combustion engine, described nozzle can be provided with the cover layer 30 of a pottery on the downside of lower member 20, and the situation in as in the embodiment according to Fig. 4 is such.When described nozzle sprays urea liquid when carrying out SCR (SCR) for internal combustion engine in exhaust gas aftertreatment with acting on, this thermal insulation layer, promptly the pottery 30, here as the excessive hot thermal insulator of importing that prevents to the member 10,20 of nozzle, because high temperature can occur here.
The part of the amplification of another embodiment shown in Figure 5.In order to empty nozzle and, in chamber that is used for jet hole 1l is supplied or supply line 12, to process fin 17 for fear of because urea crystal stops up (Verblockung).Behind engine shutdown, no longer cool off by urea liquid.The heat of being imported imports the central authorities of urea passage now by fin 17.Urea is heated to more than the vaporization limit in the position of fin thus.The steam that is produced will be positioned at the urea fluid column (Harnstoffs of its front
Ule) from nozzle 11, send.
Nozzle described herein is only made by two members 10,20.Described member is upper component 10 and the lower member 20 with chamber or passage 12 and chamber or passage 22.In order to make described single member 10,20, adopt MIM method (metal powder injection molded) here.
Described two single members 10,20 bond towards being provided with also after injection mutually mutually.Then, described member is carried out unsticking and sintering.Member obtains its final strength thus.After sintering, the member of finishing that acquisition can be installed.The advantage of this method is, freely profile configuration and attainable tolerance rank.The thermal insulation layer 30 of pottery is ejected on the member in another operation and then carries out roasting (brennen).
Nozzle according to Fig. 6 is formed by a unique member 6, and this member has first jet hole 11, and this jet hole promptly, under the situation as the nozzle in the exhaust gas aftertreatment, is supplied urea liquid by one first chamber, 12 supplies liquid to be atomized.Described in addition member 6 has second jet hole 21 of annulus form, and described annulus is used for the pressure air that the liquid that flows out from first jet hole 11 atomizes is loaded by built-in chamber 22 usefulness.Described annulus 21 is concentric with respect to first jet hole 11.
According to the nozzle of Fig. 6 as a whole the member of formula make by the metal powder injection method, promptly (MIM Metal-lnjection-Molding) makes by metal powder injection molded.Here, when pouring member 6, be formed for forming the cavity of chamber 12,22 that is built in the member 6 and the complexity of the interface channel that leads to jet hole 11,21 by a plastic body.In the unsticking of back, make described plastic body gasification.Binding agent is coordinated mutually with the material of plastic body for this reason.
Process internal thread in chamber 12,22, described internal thread is with acting on the join domain that connects the supply line that is used for liquid and pressure air.Through hole 31,32 is used to install nozzle body 6.
Claims (10)
1. especially for liquid being atomized by means of pressure air, particularly in the waste gas system of internal combustion engine, be used to spray urea liquid to carry out the dual-medium nozzle of SCR, wherein this nozzle has at least one first jet hole (11) and one second jet hole (21), it is characterized in that, described second jet hole (21) is formed by an annulus, and this annulus is provided with one heart with respect to first jet hole (11).
2. nozzle according to claim 1 is characterized in that, described first jet hole (11) is with one first chamber (12) and/or supply line links to each other and supply liquid to be atomized by described first chamber and/or supply line.
3. nozzle according to claim 1 and 2 is characterized in that, described second jet hole (21) and one second chamber (2) and/or supply line links to each other and by described second chamber and/or supply line supplied with pressure air.
4. each described nozzle in requiring according to aforesaid right, it is characterized in that, described designs of nozzles becomes multi-piece type, two-piece type particularly, be designed so that particularly one first member (10) has first jet hole (11), and make one second member (20) surround described first member (10) at least in part, thereby between first member (10) and second member (20), form described second jet hole (21).
5. each described nozzle in requiring according to aforesaid right, it is characterized in that, described two jet holes (11,12) link to each other with a chamber and/or supply line (12,22) respectively, wherein said chamber and/or supply line (12,22) have the join domain, particularly pipe joint (13,23) that are used for flexible pipe, pipeline, flange etc.
6. each described nozzle in requiring according to aforesaid right is characterized in that, is provided with a plurality of cooling fins (14,15) in the outside.
7. each described nozzle in requiring according to aforesaid right is characterized in that be provided with a thermal insulation layer (30) in the outside, particularly described nozzle has the coating of a pottery.
8. each described nozzle in requiring according to aforesaid right is characterized in that the described member of each of nozzle (10,20) is by metal powder injection molded manufacturing.
9. each described nozzle in requiring according to aforesaid right is characterized in that, described designs of nozzles becomes multi-piece type, wherein each described member (10,20) bonding mutually.
10. each described nozzle in requiring according to aforesaid right is characterized in that, described nozzle is carried out unsticking and/or sintering and/or uses ceramic coated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008051872A DE102008051872A1 (en) | 2008-10-16 | 2008-10-16 | two-fluid nozzle |
| DE102008051872.7 | 2008-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101518766A true CN101518766A (en) | 2009-09-02 |
Family
ID=41079680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910001360A Pending CN101518766A (en) | 2008-10-16 | 2009-01-07 | Dual-medium nozzle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101518766A (en) |
| DE (1) | DE102008051872A1 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212285A (en) * | 2013-05-07 | 2013-07-24 | 苏圣科技（无锡）有限公司 | Denitration urea injector |
| CN103946500A (en) * | 2011-11-29 | 2014-07-23 | 罗伯特·博世有限公司 | Exhaust gas aftertreament system and method for introducing a reductant into an exhaust gas channel of an internal combustion engine |
| CN104454093A (en) * | 2014-11-13 | 2015-03-25 | 重庆超力高科技股份有限公司 | Precise-jetting quick-responding air type SCR jetting device and method |
| CN104696052A (en) * | 2015-03-09 | 2015-06-10 | 东风商用车有限公司 | SCR urea nozzle assembly of automobile internal combustion engine |
| CN104912632A (en) * | 2015-05-08 | 2015-09-16 | 北京大学包头创新研究院 | Diesel engine selective catalytic reduction system nozzle |
| CN104948276A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea ejector |
| CN104948273A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea injection system |
| CN106150612A (en) * | 2016-07-04 | 2016-11-23 | 武汉理工大学 | Gas jet type adds blue combined jet device and application thereof |
| CN106257003A (en) * | 2016-06-06 | 2016-12-28 | 南通恩普环保技术有限公司 | Diesel engine scr reductant metering nozzle |
| CN106337713A (en) * | 2016-11-30 | 2017-01-18 | 烟台盈德精密机械有限公司 | Dual-fluid Reducing Agent Ejector |
| CN106437970A (en) * | 2016-11-30 | 2017-02-22 | 烟台盈德精密机械有限公司 | Two-fluid urea nozzle |
| CN107307467A (en) * | 2017-07-31 | 2017-11-03 | 黑龙江烟草工业有限责任公司 | Tobacco shred feeding device |
| CN109551814A (en) * | 2018-11-07 | 2019-04-02 | Tcl王牌电器(惠州)有限公司 | A kind of spraying machine |
| CN110756345A (en) * | 2013-06-07 | 2020-02-07 | 涂层国外知识产权有限公司 | Spray gun and spraying method |
| CN113090362A (en) * | 2021-04-27 | 2021-07-09 | 广西卡迪亚科技有限公司 | Urea supersonic jet ejector structure and engine SCR tail gas emission post-treatment system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011014634A1 (en) * | 2011-03-21 | 2012-09-27 | Albonair Gmbh | aftertreatment system |
| DE102011119128A1 (en) | 2011-11-23 | 2013-05-23 | Thomas Magnete Gmbh | Device for metering and mixing fluid streams used in burner, has reciprocating pump whose outlet and main portion of mixing apparatus form structural unit so that groups of guide plates are coaxially arranged with piston pump |
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| US4224158A (en) * | 1977-11-22 | 1980-09-23 | Clevepak Corporation | Aeration system and method with tapered nozzle |
| JP2007040118A (en) * | 2005-08-01 | 2007-02-15 | Osaka Gas Co Ltd | Aqueous urea nozzle device |
| CN1981115A (en) * | 2004-07-08 | 2007-06-13 | 日野自动车株式会社 | Method for controlling exhaust emission control device |
| WO2007091969A1 (en) * | 2006-02-08 | 2007-08-16 | Stt Emtec Ab | Injection device |
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| US2714373A (en) * | 1951-01-30 | 1955-08-02 | Barnes & Reinecke Inc | Air cooled compression-ignition engine and injector therefor |
| DE60020463T2 (en) * | 1999-09-03 | 2006-04-27 | Delphi Technologies, Inc., Troy | injection |
| US6817550B2 (en) * | 2001-07-06 | 2004-11-16 | Diamicron, Inc. | Nozzles, and components thereof and methods for making the same |
| DE10150931A1 (en) * | 2001-10-11 | 2003-04-30 | Lueder Gerking | Improved mixture formation in internal combustion engines |
| DE10247763A1 (en) * | 2002-10-14 | 2004-06-03 | Robert Bosch Gmbh | atomizer |
-
2008
- 2008-10-16 DE DE102008051872A patent/DE102008051872A1/en not_active Withdrawn
-
2009
- 2009-01-07 CN CN200910001360A patent/CN101518766A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224158A (en) * | 1977-11-22 | 1980-09-23 | Clevepak Corporation | Aeration system and method with tapered nozzle |
| CN1981115A (en) * | 2004-07-08 | 2007-06-13 | 日野自动车株式会社 | Method for controlling exhaust emission control device |
| JP2007040118A (en) * | 2005-08-01 | 2007-02-15 | Osaka Gas Co Ltd | Aqueous urea nozzle device |
| WO2007091969A1 (en) * | 2006-02-08 | 2007-08-16 | Stt Emtec Ab | Injection device |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103946500A (en) * | 2011-11-29 | 2014-07-23 | 罗伯特·博世有限公司 | Exhaust gas aftertreament system and method for introducing a reductant into an exhaust gas channel of an internal combustion engine |
| CN103212285B (en) * | 2013-05-07 | 2015-12-23 | 苏圣科技（无锡）有限公司 | A kind of Denitration urea injector |
| CN103212285A (en) * | 2013-05-07 | 2013-07-24 | 苏圣科技（无锡）有限公司 | Denitration urea injector |
| CN110756345A (en) * | 2013-06-07 | 2020-02-07 | 涂层国外知识产权有限公司 | Spray gun and spraying method |
| CN104454093A (en) * | 2014-11-13 | 2015-03-25 | 重庆超力高科技股份有限公司 | Precise-jetting quick-responding air type SCR jetting device and method |
| CN104696052A (en) * | 2015-03-09 | 2015-06-10 | 东风商用车有限公司 | SCR urea nozzle assembly of automobile internal combustion engine |
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