CN106593586A - Urea injection device for engine SCR system - Google Patents

Urea injection device for engine SCR system Download PDF

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Publication number
CN106593586A
CN106593586A CN201611073131.8A CN201611073131A CN106593586A CN 106593586 A CN106593586 A CN 106593586A CN 201611073131 A CN201611073131 A CN 201611073131A CN 106593586 A CN106593586 A CN 106593586A
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CN
China
Prior art keywords
hybrid chamber
carbamide
gas
way valve
gas circuit
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.)
Granted
Application number
CN201611073131.8A
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Chinese (zh)
Other versions
CN106593586B (en
Inventor
郑志强
王飞
张建华
宋勃震
安丽花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Power Co Ltd
Weichai Power Emission Solutions Technology Co Ltd
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Weichai Power Emission Solutions Technology Co Ltd
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Publication date
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Priority to CN201611073131.8A priority Critical patent/CN106593586B/en
Publication of CN106593586A publication Critical patent/CN106593586A/en
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Publication of CN106593586B publication Critical patent/CN106593586B/en
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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
    • F01N3/08—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]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/12—Methods and means for introducing reactants
    • B01D2259/124—Liquid reactants
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention relates to a urea injection device for an engine SCR system. The urea injection device comprises a urea liquid way, a gas way, a mixing chamber and a nozzle. One inlet end of the mixing chamber communicates with the gas way, and the other inlet end of the mixing chamber communicates with the urea liquid way. The outlet end of the mixing chamber communicates with the nozzle. A gas way one-way valve is arranged on the gas way. A liquid way one-way valve is arranged on the urea liquid way. Gas in the gas way enters the mixing chamber in the horizontal flowing direction. A urea solution in the urea liquid way is vertically injected into the mixing chamber. By the adoption of the urea injection device for the engine SCR system, the problem that the urea at the urea pump mixing chamber is attached to the wall of the gas way one-way valve and crystallized is solved effectively, the whole vehicle failure rate can be lowered, and the stability and reliability of the SCR injection system are improved. The invention further relates to the engine SCR system with the urea injection device.

Description

A kind of carbamide injection apparatus for electromotor SCR system
Technical field
The invention belongs to motor exhaust after-treatment system technical field, and in particular to one kind is used for electromotor SCR system Carbamide injection apparatus and the electromotor SCR system including this carbamide injection apparatus.
Background technology
SCR catalytic reduction techniques are to reduce Diesel NOx discharge, meet the important technology road of state IV and above Abgasgesetz Line.SCR system basic functional principle is that aerofluxuss are entered in exhaustor from after booster turbine outflow, while by installed in aerofluxuss Carbamide injection unit on pipe sprays into quantitative aqueous solution of urea in exhaustor with mist form, and urea droplets are in high-temp waste gas Effect issues unboiled water solution and pyrolytic reaction, the reducing agent ammonia required for generating, and ammonia is in the presence of catalyst by nitrogen oxidation Thing is selectively reduced to nitrogen.Spraying system is used as the kernel component in SCR system, the reliability of the injection of spraying system Property and stability directly influence the conversion efficiency of SCR system.Due to the carbamide used in SCR system, and carbamide easily goes out Existing crystalline polamer, especially in urea liquid and gas mixing, can there is crystallization at gas circuit and fluid path mixing in carbamide, cause urine The air passage one-way valve Crystallization Plugging of plain spraying system and the vehicle trouble that causes, and then cause to discharge severe overweight and SCR casees knot Crystalline substance, and cause vehicle limit to turn round so as to affect normally using for user.
The content of the invention
For attached wall crystallisation problems of the carbamide at air passage one-way valve at effectively solving urea pump hybrid chamber, the present invention is proposed A kind of carbamide injection apparatus for electromotor SCR system, can reduce complete vehicle fault, improve the stability of SCR spraying systems And reliability.
The purpose of the present invention is achieved through the following technical solutions.
A kind of carbamide injection apparatus for electromotor SCR system, including carbamide fluid path, gas circuit, hybrid chamber and nozzle, institute An arrival end for stating hybrid chamber is connected with gas circuit, and another arrival end of the hybrid chamber is connected with the carbamide fluid path, institute The port of export for stating hybrid chamber is connected with the nozzle, and air passage one-way valve is provided with the gas circuit, is arranged in the carbamide fluid path There is fluid path check valve, the gas in the gas circuit enters the hybrid chamber along level flow direction, and the carbamide in the carbamide fluid path is molten Liquid vertically sprays into the hybrid chamber.
Further, the hybrid chamber is spiral-flow type hybrid chamber, and gas and urea liquid tangentially enter the hybrid chamber, formed Rotating vortex sprays.
Further, the inwall of the hybrid chamber is provided with helical groove or arranges deflector in the shape of a spiral on inwall.
Further, the air passage one-way valve is arranged in the gas circuit by air passage one-way valve mounting seat, the gas circuit Check valve is connected with the inner wall sealing of the air passage one-way valve mounting seat.
Further, the cross sectional shape of the outlet side of the air passage one-way valve mounting seat is taper.
Further, the air passage one-way valve includes valve body, piston and spring, and the spring is arranged on the valve body and described Between piston, the piston is connected by sealing ring with the valve seal.
Further, it is provided with for making stable gas pressure exist in the gas circuit between the air passage one-way valve and the hybrid chamber The pressure limiting valve of predetermined value and the cushion chamber for avoiding the air passage one-way valve and urea liquid directly contact.
Further, the gas circuit and the carbamide fluid path are mutually perpendicular to.
Another object of the present invention is to propose a kind of electromotor SCR system, and the electromotor SCR system includes described above Carbamide injection apparatus.
It is an advantage of the current invention that：
(1) using gas flow level, the mode that urea liquid is vertically sprayed into can avoid air passage one-way valve directly contact from urinating Plain solution, it is also possible to which upper urea droplets are broken thinner.
(2) increase cushion chamber between air passage one-way valve and hybrid chamber, increased check valve to the distance of blender so as to Far as possible from urea liquid, it is to avoid check valve and urea liquid directly contact.
(3) air passage one-way valve mounting seat structure outlet side cross sectional shape design it is tapered, it is to avoid urea liquid it is dead Angle remains.
(4) pressure limiting valve is set between air passage one-way valve and hybrid chamber, the stable gas pressure in gas circuit can be made in certain value.
(5) hybrid chamber is designed to spiral-flow type so that gas and urea liquid are sufficiently mixed, and sprays in rotating vortex shape is formed Go out, improve the stability of injection.
Description of the drawings
By the detailed description for reading hereafter preferred implementation, various other advantages and benefit is common for this area Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as to the present invention Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings：
Fig. 1 shows the carbamide injection apparatus schematic diagram according to embodiment of the present invention；
Fig. 2 shows the air passage one-way valve mounting seat structural representation according to embodiment of the present invention.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in accompanying drawing The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure and the reality that should not be illustrated here The mode of applying is limited.On the contrary, there is provided these embodiments are able to be best understood from the disclosure, and can be by this public affairs The scope opened it is complete convey to those skilled in the art.
According to the embodiment of the present invention, as shown in figure 1, proposing a kind of carbamide injection dress for electromotor SCR system Put, including carbamide fluid path, gas circuit, hybrid chamber and nozzle, one end of the hybrid chamber connects with gas circuit, the hybrid chamber it is another End connect with nozzle, another arrival end of the hybrid chamber is connected with the carbamide fluid path, the port of export of the hybrid chamber and The nozzle connection, is provided with air passage one-way valve in the gas circuit, fluid path check valve is provided with the carbamide fluid path, described It is provided with gas circuit between air passage one-way valve and the hybrid chamber for making stable gas pressure in the pressure limiting valve and use of predetermined value In the cushion chamber for avoiding the air passage one-way valve and urea liquid directly contact.Air compressor machine or car load gas cylinder are carbamide injection apparatus The source of the gas of pressure stability is provided, gas makes stable gas pressure certain by air passage one-way valve into gas circuit and by pressure limiting valve Value, urea liquid is reached and mixed with compressed air into hybrid chamber by the check valve in carbamide fluid path after certain pressure. Gas circuit to cushion chamber is increased between valve and hybrid chamber, so as to increase air passage one-way valve to the distance of hybrid chamber so that check valve is most Possibly remote from urea liquid, it is to avoid check valve and urea liquid directly contact.
The gas circuit and carbamide fluid path are mutually perpendicular to, and the gas in the gas circuit enters hybrid chamber along level flow direction, described Urea liquid in carbamide fluid path vertically sprays into hybrid chamber, so as to increase into the relative of the gas in hybrid chamber and urea liquid Speed difference so that urea droplets are broken thinner.Due to the mode vertically sprayed into using gas flow level, urea liquid, can keep away Exempt from air passage one-way valve directly contact urea liquid.
The hybrid chamber is spiral-flow type, and its inwall is provided with helical groove or arranges deflector, gas in the shape of a spiral on inwall Body and urea liquid tangentially enter hybrid chamber, form rotating vortex and spray, and improve the stability of injection.
The present invention is also improved to air passage one-way valve mounting seat structure, as shown in Fig. 2 check valve is unidirectional by gas circuit Valve mounting seat 1 is arranged in gas circuit, and the air passage one-way valve connects with the inner wall sealing of the air passage one-way valve mounting seat 1 Connect, the air passage one-way valve includes valve body 2, piston 3 and spring 4, the spring 4 be arranged on the valve body 2 and the piston 3 it Between, the piston 3 is tightly connected by sealing ring 5 with valve body 2, the section shape of the outlet side of air passage one-way valve mounting seat 1 Shape is taper, it is to avoid the dead angle residual of urea liquid.
The present invention also proposes a kind of electromotor SCR system, and the electromotor SCR system includes carbamide described above injection dress Put.
The present invention is not being affected most by improving gas circuit structure, gas flow level, the mode that urea liquid is vertically sprayed into Allow air passage one-way valve to avoid contact with gas-liquid mixture on the premise of whole atomizing effect, can effectively solving market exist gas circuit it is unidirectional Valve crystallisation problems, strengthen post processing kernel component and automobile reliability.Simultaneously avoiding system once quotes air passage one-way valve Blocking dependent failure just blindly pulls down the waste for processing or changing the unnecessary man power and material that urea pump brings.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be described with the protection model of claim Enclose and be defined.

Claims (9)

1. a kind of carbamide injection apparatus for electromotor SCR system, including carbamide fluid path, gas circuit, hybrid chamber and nozzle, it is special Levy and be：One arrival end of the hybrid chamber is connected with gas circuit, another arrival end and the urea solution of the hybrid chamber Road connects, and the port of export of the hybrid chamber is connected with the nozzle, and air passage one-way valve, the urea solution are provided with the gas circuit Fluid path check valve is provided with road, the gas in the gas circuit enters the hybrid chamber along level flow direction, in the carbamide fluid path Urea liquid vertically spray into the hybrid chamber.
2. carbamide injection apparatus according to claim 1, it is characterised in that the hybrid chamber is spiral-flow type hybrid chamber, gas Body and urea liquid tangentially enter the hybrid chamber, form rotating vortex and spray.
3. carbamide injection apparatus according to claim 2, it is characterised in that the inwall of the hybrid chamber is provided with helical groove Or deflector is set in the shape of a spiral on inwall.
4. carbamide injection apparatus according to claim 1 or 2 or 3, it is characterised in that the air passage one-way valve passes through gas circuit Check valve mounting seat is arranged in the gas circuit, and the air passage one-way valve is close with the inwall of the air passage one-way valve mounting seat Envelope connection.
5. carbamide injection apparatus according to claim 4, it is characterised in that the outlet of the air passage one-way valve mounting seat The cross sectional shape at end is taper.
6. carbamide injection apparatus according to claim 5, it is characterised in that the air passage one-way valve includes valve body, piston And spring, the spring is arranged between the valve body and the piston, and the piston is by sealing ring and the valve seal Connection.
7. carbamide injection apparatus according to claim 1 and 2, it is characterised in that mixed with described in the air passage one-way valve Close and be provided with for making stable gas pressure in the pressure limiting valve of predetermined value and for avoiding the gas circuit unidirectional in the gas circuit between chamber The cushion chamber of valve and urea liquid directly contact.
8. carbamide injection apparatus according to claim 1 and 2, it is characterised in that the gas circuit and the carbamide fluid path phase It is mutually vertical.
9. a kind of electromotor SCR system, the electromotor SCR system is included according to any one of claim 1 to 8 Carbamide injection apparatus.
CN201611073131.8A 2016-11-29 2016-11-29 A kind of urea injection apparatus for engine SCR system Active CN106593586B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611073131.8A CN106593586B (en) 2016-11-29 2016-11-29 A kind of urea injection apparatus for engine SCR system

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Application Number Priority Date Filing Date Title
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CN106593586B CN106593586B (en) 2019-07-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107456882A (en) * 2017-09-14 2017-12-12 无锡威孚力达催化净化器有限责任公司 A kind of urea solution metering pump Liqiud-gas mixing device
CN108119222A (en) * 2017-12-21 2018-06-05 重庆麦纳昇科技有限公司 A kind of exhaust pipe

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CN101660442A (en) * 2008-05-28 2010-03-03 中国第一汽车集团公司 Vehicle-mounted SCR metering and ejecting system taking NOx in exhaust gas as variable
CN102116186A (en) * 2010-07-21 2011-07-06 苏州派格力减排***有限公司 Gas-liquid stirring and mixing device of urea solution metering injection system
CN202228159U (en) * 2011-09-13 2012-05-23 浙江邦得利汽车环保技术有限公司 Silicon controlled rectifier (SCR) urea injection device for diesel engine
CN102688712A (en) * 2012-06-13 2012-09-26 安徽艾可蓝节能环保科技有限公司 Mixer for urea feeding unit
CN103032135A (en) * 2011-10-02 2013-04-10 苏州派格丽减排***有限公司 Urea pump internally arranged type selective catalytic reduction (SCR) reducing agent storage and jetting system
CN103147828A (en) * 2013-03-26 2013-06-12 无锡市凯龙汽车设备制造有限公司 Gas-liquid one-way mixing device for urea pump
CN103195546A (en) * 2013-03-26 2013-07-10 无锡市凯龙汽车设备制造有限公司 Air-assisted urea measuring injection system
CN203130207U (en) * 2013-03-26 2013-08-14 无锡市凯龙汽车设备制造有限公司 Air-boosting urea metering jetting system
CN203756290U (en) * 2013-12-04 2014-08-06 张家口百通环保科技有限公司 Urea water solution injection system used for SCR (Selective Catalytic Reduction) postprocessing system
CN204386852U (en) * 2014-12-26 2015-06-10 陈庆东 A kind of urea pump control system
CN205172700U (en) * 2015-11-23 2016-04-20 安徽中鼎金亚汽车管件制造有限公司 Urea case pipeline structure
CN105545423A (en) * 2016-02-05 2016-05-04 东风商用车有限公司 Urea jet system without air-assisted atomization and control method of atomized urea jet system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101660442A (en) * 2008-05-28 2010-03-03 中国第一汽车集团公司 Vehicle-mounted SCR metering and ejecting system taking NOx in exhaust gas as variable
CN102116186A (en) * 2010-07-21 2011-07-06 苏州派格力减排***有限公司 Gas-liquid stirring and mixing device of urea solution metering injection system
CN202228159U (en) * 2011-09-13 2012-05-23 浙江邦得利汽车环保技术有限公司 Silicon controlled rectifier (SCR) urea injection device for diesel engine
CN103032135A (en) * 2011-10-02 2013-04-10 苏州派格丽减排***有限公司 Urea pump internally arranged type selective catalytic reduction (SCR) reducing agent storage and jetting system
CN102688712A (en) * 2012-06-13 2012-09-26 安徽艾可蓝节能环保科技有限公司 Mixer for urea feeding unit
CN103147828A (en) * 2013-03-26 2013-06-12 无锡市凯龙汽车设备制造有限公司 Gas-liquid one-way mixing device for urea pump
CN103195546A (en) * 2013-03-26 2013-07-10 无锡市凯龙汽车设备制造有限公司 Air-assisted urea measuring injection system
CN203130207U (en) * 2013-03-26 2013-08-14 无锡市凯龙汽车设备制造有限公司 Air-boosting urea metering jetting system
CN203756290U (en) * 2013-12-04 2014-08-06 张家口百通环保科技有限公司 Urea water solution injection system used for SCR (Selective Catalytic Reduction) postprocessing system
CN204386852U (en) * 2014-12-26 2015-06-10 陈庆东 A kind of urea pump control system
CN205172700U (en) * 2015-11-23 2016-04-20 安徽中鼎金亚汽车管件制造有限公司 Urea case pipeline structure
CN105545423A (en) * 2016-02-05 2016-05-04 东风商用车有限公司 Urea jet system without air-assisted atomization and control method of atomized urea jet system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107456882A (en) * 2017-09-14 2017-12-12 无锡威孚力达催化净化器有限责任公司 A kind of urea solution metering pump Liqiud-gas mixing device
CN107456882B (en) * 2017-09-14 2021-01-08 无锡威孚力达催化净化器有限责任公司 Urea solution metering pump gas-liquid mixing device
CN108119222A (en) * 2017-12-21 2018-06-05 重庆麦纳昇科技有限公司 A kind of exhaust pipe

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