CN108625958A - A kind of urea pump of no air auxiliary - Google Patents

A kind of urea pump of no air auxiliary Download PDF

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Publication number
CN108625958A
CN108625958A CN201810860677.0A CN201810860677A CN108625958A CN 108625958 A CN108625958 A CN 108625958A CN 201810860677 A CN201810860677 A CN 201810860677A CN 108625958 A CN108625958 A CN 108625958A
Authority
CN
China
Prior art keywords
pump
urea
accumulation chamber
pressure accumulation
inlet
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
Application number
CN201810860677.0A
Other languages
Chinese (zh)
Inventor
臧志成
陈兴通
刘德文
赵闯
曾伟
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.)
Kailong High Technology Co Ltd
Original Assignee
Kailong High Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kailong High Technology Co Ltd filed Critical Kailong High Technology Co Ltd
Priority to CN201810860677.0A priority Critical patent/CN108625958A/en
Publication of CN108625958A publication Critical patent/CN108625958A/en
Pending legal-status Critical Current

Links

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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1433—Pumps
    • F01N2610/144—Control thereof
    • 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
    • F01N2610/146—Control thereof, e.g. control of injectors or injection valves
    • 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
    • F01N2610/148—Arrangement of sensors
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1808—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1083—Urea
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention discloses a kind of urea pumps of no air auxiliary, it includes the pump housing, gear pump and pressure accumulation chamber are provided in the pump housing, the gear pump is connected by inner passage with pressure accumulation chamber, the first inlet is provided on the gear pump, liquid outlet and overflow port, overflow valve there are one being set in the overflow port, it is provided with the second inlet on the pressure accumulation chamber, jet port and liquid return hole, first inlet is connected by pipeline with urea tank, the liquid outlet is connected by pipeline with the second inlet, the overflow port is connected by pipeline with liquid return hole, the liquid return hole is connected with urea tank, the jet port is connected with nozzle by injection line, pressure sensor is installed on the pressure accumulation chamber, electronic control unit is connect with gear pump and pressure sensor communication.The urea pump of above-mentioned no air auxiliary is not only simple in structure, compact, light-weight, small；And at low cost, stable and reliable operation, injection control precision are high.

Description

A kind of urea pump of no air auxiliary
Technical field
SCR spraying systems in being post-processed the present invention relates to diesel engine vent gas being used for diesel oil tail more particularly, to one kind The urea pump without air auxiliary of SCR spraying systems in gas post-processing.
Background technology
Refer to being mounted on for selective catalytic conversion system of diesel engine SCR (SelectiveCatalystReduction) In diesel engine automobile air exhausting system, the NOx in diesel emission is catalysed and reduced into N2And O2Catalytic reduction device, select urea Aqueous solution is as reducing agent.Aqueous solution of urea is ejected into the exhaust pipe of catalyst upstream, in the effect of exhaust gas temperature and air-flow Lower hydrolysis is produced as CO2And NOx is reduced into free of contamination nitrogen and water by ammonia, ammonia as reducing agent.
Urea pump is essential important component in SCR system, however, existing major part urea pump generally existing knot Structure complexity, poor reliability and disadvantage of high cost.
Invention content
The purpose of the present invention is to provide a kind of urea pumps of no air auxiliary, there is knot to solve prior art urea pump Structure complexity, poor reliability and problem of high cost.
For this purpose, the present invention uses following technical scheme：
A kind of urea pump of no air auxiliary comprising the pump housing is provided with gear pump and pressure accumulation chamber in the pump housing, described Gear pump is connected by inner passage with pressure accumulation chamber, wherein is provided with the first inlet, liquid outlet on the gear pump and is overflow Head piece is set in the overflow port there are one overflow valve, and the second inlet, jet port and liquid return hole are provided on the pressure accumulation chamber, First inlet is connected by pipeline with urea tank, and the liquid outlet is connected by pipeline with the second inlet, institute It states overflow port by pipeline to be connected with liquid return hole, the liquid return hole is connected with urea tank, and the jet port passes through injection pipe Road is connected with nozzle, is equipped with pressure sensor on the pressure accumulation chamber, electronic control unit with gear pump and pressure sensor Communication connection.
Particularly, it is also equipped with temperature sensor on the pressure accumulation chamber.
Particularly, the temperature sensor and pressure sensor are connect by helicitic texture with pressure accumulation chamber.
Particularly, the jet port is connected with nozzle, the electronic control unit and nozzle communication link by injection line It connects, to control the opening time of nozzle.
Particularly, the electronic control unit controls gear pump with setting speed forward or reverse, to realize urea liquid Supply and pumpback.
Beneficial effects of the present invention are that the urea pump of the no air auxiliary is not only simple in structure compared with prior art, It is compact, it is light-weight, it is small；And at low cost, stable and reliable operation, injection control precision are high.
Description of the drawings
Fig. 1 is the dimensional structure diagram for the urea pump assisted without air that the specific embodiment of the invention provides；
Fig. 2 is the three-dimensional knot of the end cap of the gear pump for the urea pump assisted without air that the specific embodiment of the invention provides Structure schematic diagram；
Fluid path principle when Fig. 3 is the normal work for the urea pump assisted without air that the specific embodiment of the invention provides Figure；
Fluid path when Fig. 4 is the pumpback urea liquid for the urea pump assisted without air that the specific embodiment of the invention provides Schematic diagram.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
Shown in please referring to Fig.1 to Fig.4, in the present embodiment, a kind of urea pump of no air auxiliary includes the pump housing 1, the pump Gear pump 2 and pressure accumulation chamber 3 are provided in body 1, the gear pump 2 is connected by inner passage with pressure accumulation chamber 3, the gear pump It is provided with the first inlet 20, liquid outlet 21 and overflow port 22 on 2, is set in the overflow port 22 there are one overflow valve 23, pressure accumulation The second inlet 30, jet port 31 and liquid return hole 32 are provided on chamber 3, first inlet 20 passes through pipeline and urea tank 7 It is connected, the liquid outlet 21 is connected by pipeline with the second inlet 30, and overflow port 22 passes through pipeline and 32 phase of liquid return hole Connection, liquid return hole 32 are connected with urea tank 7, and jet port 31 is connected with automatically controlled nozzle 8, temperature sensor 4 by injection line It is connected on pressure accumulation chamber 3 by helicitic texture with pressure sensor 5.
Electronic control unit 6 is communicated to connect with gear pump 2, pressure sensor 5, temperature sensor 4 and nozzle respectively, electronics Control unit 6 can control gear pump 2 with the positive and negative operating of setting speed, and electronic control unit 6 can be real by pressure sensor 5 When monitoring injection line in urea pressure, electronic control unit 6 controls the opening time of automatically controlled nozzle 8 according to internal processes, To control the accuracy of spray of urea.
After diesel engine starting, delivery temperature reaches calibration value, and electronic control unit 6 controls gear pump 2 with certain rotating speed Positive work, the extracted urea solution from urea tank 7, urea are full of the urea injection line that is connect with pump housing jet port and automatically controlled Nozzle 8, and certain pressure is established in it, the overflow valve 23 set in the overflow port 22 that extra urea passes through gear pump 2 passes through The liquid return hole 32 for crossing pressure accumulation chamber 3 is back to urea tank 7, and electronic control unit 6 can be monitored in real time by pressure sensor 5 at this time Urea pressure in injection line.Electronic control unit 6 controls the opening time of automatically controlled nozzle 8 according to internal processes, to control The accuracy of spray of antidiuresis element.After electricity under diesel engine, electronic control unit 6 controls 2 antiport of gear pump, by urea pipe and Urea in automatically controlled nozzle is drawn back in urea tank 7, and urea crystals are prevented.
Above example is to elaborate that the basic principle and characteristic of the present invention, the present invention are not limited by above-mentioned example, Without departing from the spirit and scope, the present invention also has various changes, these changes and modifications are both fallen within In scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.

Claims (5)

1. a kind of urea pump of no air auxiliary comprising the pump housing is provided with gear pump and pressure accumulation chamber, the tooth in the pump housing Wheel pump is connected by inner passage with pressure accumulation chamber, which is characterized in that the first inlet, liquid outlet are provided on the gear pump And overflow port, it sets in the overflow port there are one overflow valve, is provided with the second inlet, jet port on the pressure accumulation chamber and returns liquid Mouthful, first inlet is connected by pipeline with urea tank, and the liquid outlet is connected by pipeline with the second inlet, The overflow port is connected by pipeline with liquid return hole, and the liquid return hole is connected with urea tank, and the jet port passes through injection Piping connection has nozzle, is equipped with pressure sensor on the pressure accumulation chamber, electronic control unit with gear pump and pressure sensing Device communicates to connect.
2. the urea pump of no air auxiliary according to claim 1, which is characterized in that be also equipped with temperature on the pressure accumulation chamber Spend sensor.
3. the urea pump of no air auxiliary according to claim 2, which is characterized in that the temperature sensor and pressure pass Sensor is connect by helicitic texture with pressure accumulation chamber.
4. the urea pump of no air auxiliary according to claim 1, which is characterized in that the jet port passes through injection line It is connected with nozzle, the electronic control unit is communicated to connect with nozzle.
5. the urea pump of no air auxiliary according to claim 1, which is characterized in that the electronic control unit controls tooth Wheel pump is with setting speed forward or reverse.
CN201810860677.0A 2018-08-01 2018-08-01 A kind of urea pump of no air auxiliary Pending CN108625958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810860677.0A CN108625958A (en) 2018-08-01 2018-08-01 A kind of urea pump of no air auxiliary

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810860677.0A CN108625958A (en) 2018-08-01 2018-08-01 A kind of urea pump of no air auxiliary

Publications (1)

Publication Number Publication Date
CN108625958A true CN108625958A (en) 2018-10-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810860677.0A Pending CN108625958A (en) 2018-08-01 2018-08-01 A kind of urea pump of no air auxiliary

Country Status (1)

Country Link
CN (1) CN108625958A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109975495A (en) * 2019-04-30 2019-07-05 凯龙高科技股份有限公司 A kind of integrated form urea level temperature quality sensor
CN112855312A (en) * 2021-03-04 2021-05-28 山东艾泰克环保科技股份有限公司 Urea pump injection metering pump
CN113145407A (en) * 2020-11-20 2021-07-23 河北华胜科技有限公司 Steady flow conveying system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103261612A (en) * 2010-12-28 2013-08-21 博世株式会社 Fault diagnosis device for reducing agent supply device, and reducing agent supply device
JP2014095356A (en) * 2012-11-12 2014-05-22 Bosch Corp Reductant supply device
CN107246302A (en) * 2017-08-09 2017-10-13 华中科技大学无锡研究院 A kind of urea pumping system
CN206707811U (en) * 2017-01-18 2017-12-05 重庆凯瑞伟柯斯环保科技有限公司 Aqueous solution of urea metering jetting device
CN207598326U (en) * 2017-03-20 2018-07-10 天纳克（苏州）排放系统有限公司 Integrating device and its exhaust gas aftertreatment system
CN208718764U (en) * 2018-08-01 2019-04-09 凯龙高科技股份有限公司 A kind of urea pump of no air auxiliary

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103261612A (en) * 2010-12-28 2013-08-21 博世株式会社 Fault diagnosis device for reducing agent supply device, and reducing agent supply device
JP2014095356A (en) * 2012-11-12 2014-05-22 Bosch Corp Reductant supply device
CN206707811U (en) * 2017-01-18 2017-12-05 重庆凯瑞伟柯斯环保科技有限公司 Aqueous solution of urea metering jetting device
CN207598326U (en) * 2017-03-20 2018-07-10 天纳克（苏州）排放系统有限公司 Integrating device and its exhaust gas aftertreatment system
CN107246302A (en) * 2017-08-09 2017-10-13 华中科技大学无锡研究院 A kind of urea pumping system
CN208718764U (en) * 2018-08-01 2019-04-09 凯龙高科技股份有限公司 A kind of urea pump of no air auxiliary

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109975495A (en) * 2019-04-30 2019-07-05 凯龙高科技股份有限公司 A kind of integrated form urea level temperature quality sensor
CN113145407A (en) * 2020-11-20 2021-07-23 河北华胜科技有限公司 Steady flow conveying system
CN113145407B (en) * 2020-11-20 2022-11-11 河北华胜科技有限公司 Steady flow conveying system
CN112855312A (en) * 2021-03-04 2021-05-28 山东艾泰克环保科技股份有限公司 Urea pump injection metering pump

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