WO2016078538A1 - 共轨组件、尿素喷射系统及其应用 - Google Patents

共轨组件、尿素喷射系统及其应用 Download PDF

Info

Publication number
WO2016078538A1
WO2016078538A1 PCT/CN2015/094449 CN2015094449W WO2016078538A1 WO 2016078538 A1 WO2016078538 A1 WO 2016078538A1 CN 2015094449 W CN2015094449 W CN 2015094449W WO 2016078538 A1 WO2016078538 A1 WO 2016078538A1
Authority
WO
WIPO (PCT)
Prior art keywords
urea
common rail
rail assembly
end surface
inlet passage
Prior art date
Application number
PCT/CN2015/094449
Other languages
English (en)
French (fr)
Inventor
杨振球
龚超
樊高峰
刘大玲
张海涛
吴安舟
管帅
Original Assignee
天纳克（苏州）排放系统有限公司
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
Priority claimed from CN201410671572.2A external-priority patent/CN105673154B/zh
Priority claimed from CN201510105796.1A external-priority patent/CN104763497B/zh
Application filed by 天纳克（苏州）排放系统有限公司 filed Critical 天纳克（苏州）排放系统有限公司
Priority to EP15861165.7A priority Critical patent/EP3228839B1/en
Priority to US15/528,448 priority patent/US10202883B2/en
Publication of WO2016078538A1 publication Critical patent/WO2016078538A1/zh

Links

Images

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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F01N11/005—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus the temperature or pressure being estimated, e.g. by means of a theoretical model
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • 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
    • 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]
    • 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
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to a common rail assembly, a urea injection system and an application thereof, and belongs to the technical field of engine exhaust aftertreatment.
  • a common rail assembly for use in a urea injection system, the common rail assembly including at least a first common rail and a second common rail interconnected, wherein the first
  • the common rail includes a first housing, a pressure detecting device mounted on the first housing, and a pressure regulating device;
  • the first housing includes a first urea inlet passage for entering a urea solution for supplying urea a first urea outlet passage through which the solution flows, at least one first delivery port connected to the first urea inlet passage, and at least one first return port connected to the first urea outlet passage;
  • the pressure detecting device The first urea inlet passage is connected;
  • the pressure regulating device is connected between the first urea inlet passage and the first urea outlet passage, a pressure regulating device capable of communicating or intercepting the first urea inlet passage with the first urea outlet passage;
  • the second common rail includes a second housing, the second housing including the first urea inlet a second
  • the first housing is substantially a rectangular parallelepiped, and includes a first end surface, a second end surface, a third end surface, and a fourth end surface, wherein the first end surface is opposite to the second end surface
  • the third end surface is opposite to the fourth end surface;
  • the first urea inlet passage and the first urea outlet passage penetrate the first end surface and/or the second end surface, the first conveying port
  • the first return port penetrates the fourth end surface through the third end surface.
  • the first conveying port is provided, and the first common rail is provided with a first conveying joint connected to each of the first conveying ports; the first returning port is a plurality of The first common rail is provided with a first return joint connected to each of the first return ports; wherein the number of the first return joints is the same as the number of the first transfer joints.
  • the first conveying joint is spaced between the first end surface and the second end surface, and the first reflow joint is also spaced apart from the first end surface and the Between the second end faces, the first delivery joint is opposite to the first return joint, and each of the first delivery ports is aligned with the corresponding first return port.
  • a urea mass sensor is mounted on the at least one first delivery joint.
  • the first urea inlet passage and the first urea outlet passage are parallel to each other, the first conveying joint is perpendicular to the first urea inlet passage, and the return joint is perpendicular to the The first urea outlet passage is described.
  • the common rail assembly includes a first connecting pipe connecting the first urea inlet passage and the second urea inlet passage, and connecting the first urea outlet passage and the first a second connecting pipe of the diurea outlet passage.
  • the first housing further includes a front surface perpendicular to the first, second, third, and fourth end faces and a back surface opposite to the front surface, wherein the front surface Mounting holes through the back are opened in all four corners.
  • the first housing further includes a front surface perpendicular to the first, second, third, and fourth end faces and a back surface opposite to the front surface, wherein the back surface is There is a mounting groove for mounting the pressure regulating device.
  • the pressure regulating device is a pressure control valve, and when the pressure sensor detects that the pressure is greater than a set value, the pressure control valve is opened.
  • the present invention also relates to a urea injection system for treating exhaust gas of an engine, the urea injection system comprising a urea tank, a fluid delivery device for extracting the urea solution in the urea tank outward, and the fluid delivery a common rail assembly coupled to the apparatus, a nozzle coupled to the common rail assembly, and a controller for controlling the urea injection system, the fluid delivery device including a pump for extracting a urea solution, the common rail assembly being A common rail assembly, wherein the nozzle is in communication with the first delivery port.
  • the invention also relates to the use of the above common rail in a diesel engine exhaust gas treatment system with a power exceeding 500 kW.
  • the first common rail of the present invention is provided with a first urea inlet passage for the urea solution to enter and a first urea outlet passage for the urea solution to flow out, the pressure regulating device capable of The first urea inlet passage is connected or disconnected from the first urea outlet passage to adjust the system pressure; in addition, by connecting at least the first common rail and the second common rail, an appropriate number of totals can be selected according to different application requirements.
  • the track is combined and the expansion capability is strong.
  • Figure 1 is a schematic diagram of a urea injection system for engine exhaust gas treatment of the present invention.
  • Figure 2 is a perspective view of the common rail assembly of Figure 1.
  • Figure 3 is a plan view of Figure 2.
  • Fig. 4 is a bottom view of Fig. 2;
  • Figure 5 is a cross-sectional view of the common rail assembly of the present invention at a certain location.
  • Figure 6 is a partial exploded view of Figure 2.
  • Figure 7 is an exploded perspective view of the first common rail of Figure 2;
  • Figure 8 is a cross-sectional view of the first common rail of Figure 2.
  • the present invention discloses a urea injection system 100 that can be applied to exhaust gas aftertreatment of a large engine.
  • the urea injection system 100 includes a urea tank 1 and a filter group connected to the urea tank 1.
  • a fluid transport device 4 for transporting the urea solution a common rail assembly 5 connected to the fluid transport device 4, a plurality of nozzles 6 connected to the common rail assembly 5, and a unit for controlling the urea injection Controller 2 of system 100.
  • the engine 200 is a high power engine that typically exceeds 500 kilowatts.
  • the fluid delivery device 4 is provided with a pump 41 (for example a gear pump or the like) for pumping a urea solution.
  • the controller 2 is mounted on the fluid delivery device 4 for integration.
  • the nozzle 6 is used to inject an atomized urea solution into the engine exhaust pipe 201.
  • the atomized urea solution is decomposed into ammonia gas in the engine exhaust pipe 201, and the ammonia gas can react with nitrogen oxides in the exhaust gas, thereby reducing nitrogen oxide emissions.
  • the principles of such exhaust gas treatment techniques are well known to those skilled in the art, the invention is not described herein.
  • the common rail assembly 5 includes a first common rail 51 , a second common rail 52 , and a third common rail 53 , which are connected in series.
  • the structures of the second, third, fourth, and fifth common rails 52, 53, 54, 54 are the same, and the structures of the first common rail 51 and the second common rail 52 are very similar, so as to facilitate Share equipment/mold to save manufacturing costs.
  • the following is only a detailed description of the first common rail 51 as an example.
  • the first common rail 51 is used to regulate the pressure in the urea injection system 100.
  • the first common rail 51 includes a first housing 511, a pressure detecting device 512 mounted on the first housing 511, and a pressure adjusting device 513.
  • the first housing 511 is substantially rectangular parallelepiped, and includes a first end surface 5111, a second end surface 5122, a third end surface 5113, a fourth end surface 5114, a front surface 5115, and a back surface 5116 opposite to the front surface 5115 (refer to FIG. 4 Show).
  • the first end surface 5111 is opposite to the second end surface 5112; the third end surface 5113 is opposite to the fourth end surface 5114; the front surface 5115 and the first end surface 5111, the second end surface 5122, The three end faces 5113 and the fourth end face 5114 are both perpendicular.
  • the four corners of the front surface 5115 are each provided with a mounting hole 5117 (shown in FIG. 8) for mounting and fixing the first common rail 51 to a predetermined position.
  • the back surface 5116 is provided with a mounting groove 5118 for mounting the pressure adjusting device 513.
  • the first housing 511 further includes a first urea inlet passage 5141 for entering the urea solution, a first urea outlet passage 5151 for the urea solution to flow out, and a plurality of the first urea inlet passage 5141.
  • the first urea inlet channel 5141 and the first urea outlet channel 5151 extend through the first end surface 5111 and/or the second end surface 5112. In the illustrated embodiment of the invention, the first urea inlet channel 5141 is as described
  • the first urea outlet passages 5151 each penetrate the first end surface 5111.
  • the first urea inlet passage 5141 and the first urea outlet passage 5151 are parallel to each other to facilitate processing.
  • the third end surface 5113 is provided with three first delivery ports 5142 and three first delivery joints 5143 connected to the first delivery port 5142.
  • Each of the first delivery joints 5143 is perpendicular to the first urea inlet passage 5141.
  • the three first conveying joints 5143 are spaced apart between the first end surface 5111 and the second end surface 5112.
  • a urea mass sensor 516 is mounted on the first delivery joint 5143 adjacent the third end face 5113.
  • the urea mass sensor 516 can also be mounted on any one of the first delivery joints 5143; or all of the three first delivery joints 5143 can be mounted with a urea mass sensor 516.
  • the first return port 5152 is also three, three first return ports 5152 and three connected to the first return port 5152 are disposed on the fourth end face 5114.
  • Each of the first return connections 5153 is perpendicular to the first urea outlet passage 5151.
  • the three first return joints 5153 are also spaced apart between the first end face 5111 and the second end face 5112.
  • the first delivery port 5142 extends through the third end surface 5113
  • the first return port 5152 extends through the fourth end surface 5114 .
  • the number of the first return joints 5153 is the same as the number of the first transfer joints 5143, but the mounting direction is opposite.
  • Each of the first delivery ports 5142 is aligned with the corresponding first return port 5152.
  • the pressure sensing device 512 is a pressure sensor mounted on the second end face 5112 and in communication with the first urea inlet passage 5141.
  • the pressure regulating device 512 is a pressure control valve that is mounted in the mounting groove 5118. So as to be functionally, the pressure control valve is connected between the first urea inlet passage 5141 and the first urea outlet passage 5151, and the pressure control valve can connect the first urea inlet passage 5141 is in communication with or disconnected from the first urea outlet passage 5151. For example, when the pressure sensor detects that the pressure in the first urea inlet passage 5141 is greater than a set value, the controller 2 opens the pressure control valve to achieve a pressure relief function.
  • the first common rail 51 of the present invention is very different from the common rail of the existing fuel injection.
  • the pressure applied to the common rail of the present invention in the urea injection system 100 is much less than the common rail of the fuel injection.
  • the rectangular first casing 511 disclosed in the present invention has good workability. More importantly, this provides a solution for integrating the first urea outlet passage 5151 in the first common rail 51.
  • the diameter of the first urea inlet channel 5141 It is larger than the diameter of the first urea outlet passage 5151.
  • the reason for this design is that, by scientific analysis, it is found that the pressure required to be withstood by the first urea inlet passage 5141 and the first urea outlet passage 5151 is also different.
  • the second common rail 52 is very similar to the structure of the first common rail 51 and is briefly described as follows.
  • the second common rail 52 includes a second housing 521 including a second urea inlet passage 5241 communicating with the first urea inlet passage 5141 and communicating with the first urea outlet passage 5151 a second urea outlet channel 5251, a plurality of second delivery ports 5242 connected to the second urea inlet channel 5241, and a plurality of second return ports 5252 connected to the second urea outlet channel 5251.
  • the common rail assembly 5 further includes a first connecting pipe 517 connecting the first urea inlet passage 5141 and the second urea inlet passage 5241, and connecting the first urea outlet passage 5241 and the second A second connecting tube 518 of the urea outlet channel 5251.
  • the first connecting pipe 517 and the second connecting pipe 518 are both hollow pipes to realize the flow of the urea solution in the first common rail 51 and the second common rail.
  • the present invention includes a plurality of first connecting tubes 517 and a plurality of second connecting tubes 518 for the first common rail 51, the second common rail 52, the third common rail 53, the fourth common rail 54, and the fifth
  • the common rails 55 are all connected in series. With this setting, it is possible to select a suitable number of common rails for combination according to different application requirements, and the expansion capability is strong.
  • the pressure control valve mounted on the first common rail 51 has three functions: first, assisting in establishing pressure in the urea pipeline; second, pressure regulation after pressure establishment; third, in the urea Before the injection system 100 is stopped, the air in the urea tank 1 is drawn into the line of the urea injection system by means of the reverse rotation of the pump 41 to evacuate the urea solution in the line.
  • the pressure control valve designed by the present invention skillfully solves such problems.
  • the controller 2 controls to open the pressure control valve (for example, to bring the pressure control valve to a certain fixed opening or a varying opening) when the system first begins to build pressure, and the first urea inlet passage is 5141 communicates with the first urea outlet passage 5151 to provide a passage to release air in the pipeline to facilitate rapid pressure build-up of the pipeline.
  • the controller 2 quickly adjusts the opening of the pressure control valve to pass The reflux flow of the urea solution is controlled to achieve the purpose of regulating the pressure.
  • the controller 2 Before the urea injection system 100 is stopped, the controller 2 opens the pressure control valve, and the pump 41 rotates in the reverse direction to draw the air in the urea tank 1 into the pipeline of the urea injection system. Evacuation The urea solution in the pipeline. It should be noted that before the urea injection system 100 is stopped, it means that the controller 2 has received a signal that the system is about to stop, at which time the nozzle 6 has stopped spraying, but the pump 41 is still rotating (for example Reverse). The urea solution in the pipeline is evacuated for the purpose of preventing damage to the system due to freezing and expansion of the urea solution.
  • the nozzles 6 corresponding to each common rail are arranged in three.
  • Each of the nozzles 6 is provided with a delivery line 61 communicating with a corresponding delivery port and a return line 62 communicating with a corresponding return port.
  • the nozzle 6 can inject a urea solution into the exhaust pipe 201 for chemical reaction; on the other hand, the nozzle 6 can be cooled by a refluxing urea solution.
  • the refluxed urea solution is first collected into the corresponding common rail through the return line 62, and then uniformly returned to the urea tank 1 through the return line 300.
  • a scheme of directly introducing the return line 62 into the urea tank 1 is generally employed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

一种共轨组件，用于尿素喷射系统（100）中，包括相互连接的至少第一共轨（51）以及第二共轨（52），其中第一共轨（51）包括第一壳体（511）、安装在第一壳体（511）上的压力检测装置（512）以及压力调节装置（513）。第一壳体（511）包括第一尿素进口通道（5141）、第一尿素出口通道（5151）、与第一尿素进口通道（5141）相连的至少一个第一输送口（5142）以及与第一尿素出口通道（5151）相连的至少一个第一回流口（5152）。压力检测装置（512）与第一尿素进口通道（5141）相连。压力调节装置（513）能够将第一尿素进口通道（5141）与第一尿素出口通道（5151）连通或者截断。还公开了一种尿素喷射系统以及共轨组件的应用，通过至少将第一共轨与第二共轨串联起来，可以根据不同的应用要求选择合适数目的共轨进行组合，扩展能力较强。

Description

共轨组件、尿素喷射系统及其应用 技术领域
本发明涉及一种共轨组件、尿素喷射系统及其应用，属于发动机尾气后处理技术领域。
背景技术
共轨系统在发动机的燃油喷射系统中的应用由来已久。这种燃油喷射的共轨因为需要承受非常高的压力，其结构是非常受限制的。由于圆筒结构相较于其他结构能够承受较高的压力，因此现有燃油喷射的共轨几乎均采用圆筒结构。
随着各国尾气排放标准的越趋严格，对作为尾气处理的尿素喷射系统提出更高的要求。如何控制尿素喷射系统中的压力成为业界普遍存在的技术问题。
另外，特别是针对大功率发动机的尾气处理，其尿素喷射系统的管道往往比较长，压力损失比较大，因此需要提供一种能够稳定系统压力的共轨、该共轨的应用以及具有该共轨的尿素喷射系统。
另外，当共轨应用在大型发动机后处理系统中时，为了满足不同的设计要求，往往需要设计与之相匹配的共轨，这种解决方案极大地增加了成本。
因此，有必要设计一种基于将若干共轨进行组合的新型共轨组件以解决上述问题。
发明内容
本发明的目的在于提供一种扩展能力较强的共轨组件、尿素喷射系统及其应用。
为实现上述目的，本发明采用如下技术方案：一种共轨组件，用于尿素喷射系统中，所述共轨组件包括相互连接的至少第一共轨以及第二共轨，其中所述第一共轨包括第一壳体、安装在所述第一壳体上的压力检测装置以及压力调节装置；所述第一壳体包括用以供尿素溶液进入的第一尿素进口通道、用以供尿素溶液流出的第一尿素出口通道、与所述第一尿素进口通道相连的至少一个第一输送口以及与所述第一尿素出口通道相连的至少一个第一回流口；所述压力检测装置与所述第一尿素进口通道相连；所述压力调节装置被连接在所述第一尿素进口通道与所述第一尿素出口通道之间，所述 压力调节装置能够将所述第一尿素进口通道与所述第一尿素出口通道连通或者截断；所述第二共轨包括第二壳体，所述第二壳体包括与所述第一尿素进口通道连通的第二尿素进口通道、与所述第一尿素出口通道连通的第二尿素出口通道、与所述第二尿素进口通道相连的至少一个第二输送口以及与所述第二尿素出口通道相连的至少一个第二回流口。
作为本发明进一步改进的技术方案，所述第一壳体大致呈长方体，其包括第一端面、第二端面、第三端面以及第四端面，其中所述第一端面与所述第二端面相对设置，所述第三端面与所述第四端面相对设置；所述第一尿素进口通道与所述第一尿素出口通道贯穿所述第一端面及/或第二端面，所述第一输送口贯穿所述第三端面，所述第一回流口贯穿所述第四端面。
作为本发明进一步改进的技术方案，所述第一输送口为若干个，所述第一共轨设有与每一个第一输送口相连的第一输送接头；所述第一回流口为若干个，所述第一共轨设有与每一个第一回流口相连的第一回流接头；其中所述第一回流接头的数量与所述第一输送接头的数量相同。
作为本发明进一步改进的技术方案，所述第一输送接头间隔分布在所述第一端面与所述第二端面之间，所述第一回流接头也间隔分布在所述第一端面与所述第二端面之间，所述第一输送接头与所述第一回流接头方向相反，且每一个第一输送口与相应的第一回流口对齐设置。
作为本发明进一步改进的技术方案，至少一个第一输送接头上安装有尿素质量传感器。
作为本发明进一步改进的技术方案，所述第一尿素进口通道与所述第一尿素出口通道相互平行，所述第一输送接头垂直于所述第一尿素进口通道，所述回流接头垂直于所述第一尿素出口通道。
作为本发明进一步改进的技术方案，所述共轨组件包括连接所述第一尿素进口通道与所述第二尿素进口通道的第一连接管，以及连接所述第一尿素出口通道与所述第二尿素出口通道的第二连接管。
作为本发明进一步改进的技术方案，所述第一壳体还包括与所述第一、第二、第三、第四端面均垂直的正面以及与所述正面相对的背面，其中所述正面的四个角落均开有贯穿所述背面的安装孔。
作为本发明进一步改进的技术方案，所述第一壳体还包括与所述第一、第二、第三、第四端面均垂直的正面以及与所述正面相对的背面，其中所述背面设有用以安装所述压力调节装置的安装槽。
作为本发明进一步改进的技术方案，所述压力调节装置为压力控制阀，当所述压力传感器检测到压力大于设定值时，所述压力控制阀打开。
本发明还涉及一种尿素喷射系统，用以处理发动机的尾气，所述尿素喷射系统包括尿素罐、用以将所述尿素罐内的尿素溶液向外抽出的流体输送装置、与所述流体输送装置相连的共轨组件、与所述共轨组件相连的喷嘴以及用以控制所述尿素喷射系统的控制器，所述流体输送装置包括用以抽取尿素溶液的泵，所述共轨组件为上述的共轨组件，其中所述喷嘴与所述第一输送口连通。
本发明还涉及一种上述共轨在功率超过500千瓦的柴油发动机尾气处理系统中的应用。
相较于现有技术，本发明的第一共轨设有用以供尿素溶液进入的第一尿素进口通道以及用以供尿素溶液流出的第一尿素出口通道，所述压力调节装置能够将所述第一尿素进口通道与所述第一尿素出口通道连通或者截断，以调节系统压力；另外，通过至少将第一共轨与第二共轨串联起来，可以根据不同的应用要求选择合适数目的共轨进行组合，扩展能力较强。
附图说明
图1是本发明用于发动机尾气处理的尿素喷射系统的原理图。
图2是图1中共轨组件的立体图。
图3是图2的俯视图。
图4是图2的仰视图。
图5是本发明共轨组件在某一位置处的剖视图。
图6是图2的局部分解图。
图7是图2中第一共轨的立体分解图。
图8是图2中第一共轨的剖视图。
具体实施方式
请参图1所示，本发明揭示了一种能够应用于大型发动机的尾气后处理的尿素喷射系统100，所述尿素喷射系统100包括尿素罐1、与所述尿素罐1相连的过滤器组 件3、用以输送所述尿素溶液的流体输送装置4、与所述流体输送装置4相连的共轨组件5、与所述共轨组件5相连的若干喷嘴6以及用以控制所述尿素喷射系统100的控制器2。
在本发明图示的实施方式中，所述发动机200为功率一般超过500千瓦的大功率发动机。所述流体输送装置4设有用以泵送尿素溶液的泵41(例如齿轮泵等)。在本发明图示的实施方式中，所述控制器2安装在所述流体输送装置4上，以实现集成化。所述喷嘴6用以向发动机排气管201中喷射雾化的尿素溶液。经过雾化的尿素溶液在所述发动机排气管201中被分解成氨气，所述氨气能够与尾气中的氮氧化物发生反应，从而降低氮氧化物的排放。鉴于这种尾气处理技术的原理对所属技术领域的技术人员是熟知的，本发明在此不再赘述。
请参图2至图8所示，在本发明图示的实施方式中，所述共轨组件5包括串联在一起的第一共轨51、第二共轨52、第三共轨53、第四共轨54以及第五共轨55。所述第二、第三、第四、第五共轨52、53、、54、55的结构相同，所述第一共轨51与所述第二共轨52的结构非常的类似，以便于共用设备/模具，节省制造成本。以下仅以第一共轨51为例，进行详细描述。
请参图19及图20所示，所述第一共轨51用以调节尿素喷射系统100中的压力。具体地，所述第一共轨51包括第一壳体511、安装在所述第一壳体511上的压力检测装置512以及压力调节装置513。所述第一壳体511大致呈长方体，其包括第一端面5111、第二端面5112、第三端面5113、第四端面5114、正面5115以及与所述正面5115相对的背面5116(参图4所示)。其中，所述第一端面5111与所述第二端面5112相对设置；所述第三端面5113与第四端面5114相对设置；所述正面5115与所述第一端面5111、第二端面5112、第三端面5113以及第四端面5114均垂直。所述正面5115的四个角落均开有将所述第一共轨51安装固定到预定位置处的安装孔5117(参图8所示)。所述背面5116设有用以安装所述压力调节装置513的安装槽5118。
所述第一壳体511还包括用以供尿素溶液进入的第一尿素进口通道5141、用以供尿素溶液流出的第一尿素出口通道5151、与所述第一尿素进口通道5141相连的若干第一输送口5142以及与所述第一尿素出口通道5151相连的若干第一回流口5152。所述第一尿素进口通道5141与所述第一尿素出口通道5151贯穿所述第一端面5111及/或第二端面5112。在本发明图示的实施方式中，所述第一尿素进口通道5141与所述 第一尿素出口通道5151均贯穿所述第一端面5111。所述第一尿素进口通道5141与所述第一尿素出口通道5151相互平行，从而便于加工。在本发明图示的实施方式中，所述第三端面5113上设有三个第一输送口5142以及三个与所述第一输送口5142相连的第一输送接头5143。每个第一输送接头5143均垂直于所述第一尿素进口通道5141。三个所述第一输送接头5143间隔的分布在所述第一端面5111与第二端面5112之间。在本发明图示的实施方式中，靠近所述第三端面5113那个第一输送接头5143上安装有尿素质量传感器516。当然，在其他实施方式中，所述尿素质量传感器516也可以被安装于任何一个第一输送接头5143上；或者也可将三个第一输送接头5143上全部安装有尿素质量传感器516。
在本发明图示的实施方式中，所述第一回流口5152也为三个，在所述第四端面5114上设置三个第一回流口5152及三个与所述第一回流口5152相连的第一回流接头5153。每个第一回流接头5153均垂直于所述第一尿素出口通道5151。三个所述第一回流接头5153也间隔的分布在所述第一端面5111与第二端面5112之间。所述第一输送口5142贯穿所述第三端面5113，所述第一回流口5152贯穿所述第四端面5114。所述第一回流接头5153的数量与所述第一输送接头5143的数量相同，但安装方向相反。每一个第一输送口5142与相应的第一回流口5152对齐设置。
在本发明图示的实施方式中，所述压力检测装置512为压力传感器，其被安装在所述第二端面5112上并与所述第一尿素进口通道5141连通。在本发明图示的实施方式中，所述压力调节装置512为压力控制阀，其被安装在所述安装槽5118中。如此设置，从功能上讲，所述压力控制阀被连接在所述第一尿素进口通道5141与所述第一尿素出口通道5151之间，所述压力控制阀能够将所述第一尿素进口通道5141与所述第一尿素出口通道5151连通或者截断。例如，当所述压力传感器检测到所述第一尿素进口通道5141内的压力大于设定值时，所述控制器2将所述压力控制阀打开，从而实现泄压功能。
本发明的第一共轨51与现有燃油喷射的共轨是非常不同的。首先，经过大量的数据分析，本发明应用在尿素喷射系统100中的共轨所需要承受的压力远小于燃油喷射的共轨。基于这种分析，本发明所揭示的长方形的第一壳体511具备较好的加工性。更为重要的是，这为将第一尿素出口通道5151集成在所述第一共轨51中的方案提供了可行性。当然，在本发明图示的实施方式中，所述第一尿素进口通道5141的直径 要大于所述第一尿素出口通道5151的直径。这种设计的理由在于，通过科学分析，发现所述第一尿素进口通道5141与所述第一尿素出口通道5151需要承受的压力也是不同的。
所述第二共轨52与所述第一共轨51的结构非常类似，简要描述如下。
所述第二共轨52包括第二壳体521，所述第二壳体521包括与所述第一尿素进口通道5141连通的第二尿素进口通道5241、与所述第一尿素出口通道5151连通的第二尿素出口通道5251、与所述第二尿素进口通道5241相连的若干第二输送口5242以及与所述第二尿素出口通道5251相连的若干第二回流口5252。
另外，所述共轨组件5还包括连接所述第一尿素进口通道5141与所述第二尿素进口通道5241的第一连接管517，以及连接所述第一尿素出口通道5241与所述第二尿素出口通道5251的第二连接管518。所述第一连接管517与所述第二连接管518均是空心管，以实现尿素溶液在第一共轨51以及第二共轨中的流动。
可以理解，本发明包括若干第一连接管517以及若干第二连接管518，以将所述第一共轨51、第二共轨52、第三共轨53、第四共轨54以及第五共轨55均串联起来。如此设置，可以根据不同的应用要求选择合适数目的共轨进行组合，扩展能力较强。
另外，安装在所述第一共轨51上的压力控制阀有三个作用：第一、协助建立尿素管路中的压力；第二、压力建立后的稳压控制；第三、在所述尿素喷射系统100停止之前，借助所述泵41的反向转动，将所述尿素罐1中的空气抽入所述尿素喷射系统的管路中以排空所述管路中的尿素溶液。
具体地，当系统刚开始建立压力时，管路中可能存在大量的空气，而空气的可压缩性容易导致建压失败。本发明所设计的压力控制阀巧妙的解决了此类问题。在系统刚开始建压时，所述控制器2控制打开所述压力控制阀(例如使所述压力控制阀处于某一固定的开度或者变化的开度)，将所述第一尿素进口通道5141与所述第一尿素出口通道5151连通以提供一个通道来释放管路中的空气，便于管路的快速建压。
当系统建压完成后，为了保证所述第一共轨51中的尿素压力维持在设定的压力附近并基本恒定，所述控制器2会快速调节所述压力控制阀的开度，从而通过控制尿素溶液的回流量来达到调节压力的目的。
在所述尿素喷射系统100停止之前，所述控制器2将所述压力控制阀打开，所述泵41反向转动，将所述尿素罐1中的空气抽入所述尿素喷射系统的管路中以排空所 述管路中的尿素溶液。需要说明的是：在所述尿素喷射系统100停止之前是指所述控制器2已经接到系统即将停机的信号，此时所述喷嘴6已经停止喷射，但是所述泵41仍然在转动(例如反转)。排空所述管路中的尿素溶液，其目的在于防止因尿素溶液结冰、膨胀而损坏系统。
在本发明图示的实施方式中，所述对应于每一个共轨的喷嘴6设置为三个。每个喷嘴6设有与对应的输送口连通的输送管路61及与对应的回流口连通的回流管路62。如此设置，一方面，所述喷嘴6能够将尿素溶液喷射至所述排气管201内进行化学反应；另一方面，又能够利用回流的尿素溶液对所述喷嘴6进行冷却。回流的尿素溶液首先通过回流管路62全部汇集到对应的共轨中，然后再通过回流管道300统一回流到所述尿素罐1中。现有技术中，通常采用直接将所述回流管路62引入到所述尿素罐1中的方案，这种方案会使每一个喷嘴6都需要一根独立的回流管路62，成本较高。另外，结合本发明的应用，特别是在大功率发动机的尾气处理系统中，所述尿素罐1与所述喷嘴6之间的管路长度往往较大，现有的这种回流设计不能满足要求。
另外，以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案，对本说明书的理解应该以所属技术领域的技术人员为基础，例如“前后贯穿”指的是在未安装其他零件之前是贯穿的，再例如对“前”、“后”、“左”、“右”、“上”、“下”等方向性的描述，尽管本说明书参照上述的实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换，而一切不脱离本发明的精神和范围的技术方案及其改进，均应涵盖在本发明的权利要求范围内。

Claims (12)

  1. 一种共轨组件，用于尿素喷射系统中，其特征在于：共轨组件包括相互连接的至少第一共轨以及第二共轨，其中所述第一共轨包括第一壳体、安装在所述第一壳体上的压力检测装置以及压力调节装置；所述第一壳体包括用以供尿素溶液进入的第一尿素进口通道、用以供尿素溶液流出的第一尿素出口通道、与所述第一尿素进口通道相连的至少一个第一输送口以及与所述第一尿素出口通道相连的至少一个第一回流口；所述压力检测装置与所述第一尿素进口通道相连；所述压力调节装置被连接在所述第一尿素进口通道与所述第一尿素出口通道之间，所述压力调节装置能够将所述第一尿素进口通道与所述第一尿素出口通道连通或者截断；所述第二共轨包括第二壳体，所述第二壳体包括与所述第一尿素进口通道连通的第二尿素进口通道、与所述第一尿素出口通道连通的第二尿素出口通道、与所述第二尿素进口通道相连的至少一个第二输送口以及与所述第二尿素出口通道相连的至少一个第二回流口。
  2. 如权利要求1所述的共轨组件，其特征在于：所述第一壳体大致呈长方体，其包括第一端面、第二端面、第三端面以及第四端面，其中所述第一端面与所述第二端面相对设置，所述第三端面与所述第四端面相对设置；所述第一尿素进口通道与所述第一尿素出口通道贯穿所述第一端面及/或第二端面，所述第一输送口贯穿所述第三端面，所述第一回流口贯穿所述第四端面。
  3. 如权利要求2所述的共轨组件，其特征在于：所述第一输送口为若干个，所述第一共轨设有与每一个第一输送口相连的第一输送接头；所述第一回流口为若干个，所述第一共轨设有与每一个第一回流口相连的第一回流接头；其中所述第一回流接头的数量与所述第一输送接头的数量相同。
  4. 如权利要求3所述的共轨组件，其特征在于：所述第一输送接头间隔分布在所述第一端面与所述第二端面之间，所述第一回流接头也间隔分布在所述第一端面与所述第二端面之间，所述第一输送接头与所述第一回流接头方向相反，且每一个第一输送口与相应的第一回流口对齐设置。
  5. 如权利要求3所述的共轨组件，其特征在于：至少一个第一输送接头上安装有尿素质量传感器。
  6. 如权利要求2所述的共轨组件，其特征在于：所述第一尿素进口通道与所述第一尿素出口通道相互平行，所述第一输送接头垂直于所述第一尿素进口通道，所述回流接头垂直于所述第一尿素出口通道。
  7. 如权利要求1所述的共轨组件，其特征在于：所述共轨组件包括连接所述第一尿素进口通道与所述第二尿素进口通道的第一连接管，以及连接所述第一尿素出口通道与所述第二尿素出口通道的第二连接管。
  8. 如权利要求2所述的共轨组件，其特征在于：所述第一壳体还包括与所述第一、第二、第三、第四端面均垂直的正面以及与所述正面相对的背面，其中所述正面的四个角落均开有贯穿所述背面的安装孔。
  9. 如权利要求2所述的共轨组件，其特征在于：所述第一壳体还包括与所述第一、第二、第三、第四端面均垂直的正面以及与所述正面相对的背面，其中所述背面设有用以安装所述压力调节装置的安装槽。
  10. 如权利要求9所述的共轨组件，其特征在于：所述压力调节装置为压力控制阀，当所述压力传感器检测到压力大于设定值时，所述压力控制阀打开。
  11. 一种尿素喷射系统，用以处理发动机的尾气，所述尿素喷射系统包括尿素罐、用以将所述尿素罐内的尿素溶液向外抽出的流体输送装置、与所述流体输送装置相连的共轨组件、与所述共轨组件相连的喷嘴以及用以控制所述尿素喷射系统的控制器，所述流体输送装置包括用以抽取尿素溶液的泵，所述共轨组件为权利要求1至10项中任意一项所述的共轨组件，其中所述喷嘴与所述第一输送口连通。
  12. 一种共轨组件在功率超过500千瓦的柴油发动机尾气后处理系统中的应用，其特征在于，所述共轨组件为权利要求1至10项中任意一项所述的共轨组件。
PCT/CN2015/094449 2014-11-21 2015-11-12 共轨组件、尿素喷射系统及其应用 WO2016078538A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15861165.7A EP3228839B1 (en) 2014-11-21 2015-11-12 Common rail assembly, urea injection system and application thereof
US15/528,448 US10202883B2 (en) 2014-11-21 2015-11-12 Common rail assembly, urea injection system and application thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201410671572.2 2014-11-21
CN201410671572.2A CN105673154B (zh) 2014-11-21 2014-11-21 共轨、该共轨的应用、尿素喷射系统及其控制方法
CN201510105796.1 2015-03-11
CN201510105796.1A CN104763497B (zh) 2015-03-11 2015-03-11 共轨组件、尿素喷射系统及其应用

Publications (1)

Publication Number Publication Date
WO2016078538A1 true WO2016078538A1 (zh) 2016-05-26

Family

ID=56013282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/094449 WO2016078538A1 (zh) 2014-11-21 2015-11-12 共轨组件、尿素喷射系统及其应用

Country Status (3)

Country Link
US (1) US10202883B2 (zh)
EP (1) EP3228839B1 (zh)
WO (1) WO2016078538A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111535907A (zh) * 2020-05-29 2020-08-14 凯龙高科技股份有限公司 一种尿素溶液供给装置及车用scr系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105673154B (zh) 2014-11-21 2019-11-08 天纳克（苏州）排放系统有限公司 共轨、该共轨的应用、尿素喷射系统及其控制方法
US10544721B2 (en) 2017-12-11 2020-01-28 Cummins Emission Solutions Inc. Reductant delivery systems and methods
US11674424B2 (en) * 2021-10-08 2023-06-13 Cummins Emission Solutions Inc. Reductant tank assembly with multiple connection tank header

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349143A1 (de) * 2003-10-17 2005-05-19 Daimlerchrysler Ag Dosiereinheit
CN101493027A (zh) * 2009-01-14 2009-07-29 无锡市凯龙汽车设备制造有限公司 车辆排气处理用的空气混合计量系统
CN103348106A (zh) * 2011-02-09 2013-10-09 依米泰克排放技术有限公司 用于输送还原剂的输送装置
CN204267135U (zh) * 2014-11-21 2015-04-15 天纳克（苏州）排放系统有限公司 共轨以及具有该共轨的尿素喷射系统
CN104763497A (zh) * 2015-03-11 2015-07-08 天纳克（苏州）排放系统有限公司 共轨组件、尿素喷射系统及其应用

Family Cites Families (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1260305A (en) 1968-04-05 1972-01-12 Brico Eng Fuel injection systems for internal combustion engines
JPS5225884B2 (zh) 1971-12-29 1977-07-11
US5522218A (en) 1994-08-23 1996-06-04 Caterpillar Inc. Combustion exhaust purification system and method
JP3391587B2 (ja) 1994-11-18 2003-03-31 株式会社小松製作所 ディーゼルエンジンの排気脱硝装置
US5976475A (en) 1997-04-02 1999-11-02 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
US6125629A (en) 1998-11-13 2000-10-03 Engelhard Corporation Staged reductant injection for improved NOx reduction
US6182444B1 (en) 1999-06-07 2001-02-06 Ford Global Technologies, Inc. Emission control system
US6293097B1 (en) 1999-08-16 2001-09-25 Ford Global Technologies, Inc. On-board reductant delivery system
US6820417B2 (en) 2001-11-29 2004-11-23 Analytical Engineering, Inc. Exhaust aftertreatment system and method for an internal combustion engine
EP1458960B1 (en) 2001-12-20 2011-02-09 Johnson Matthey Public Limited Company Improvements in selective catalytic reduction
US7021048B2 (en) 2002-01-25 2006-04-04 Arvin Technologies, Inc. Combination emission abatement assembly and method of operating the same
JP3758617B2 (ja) 2002-07-12 2006-03-22 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE10243270A1 (de) 2002-09-18 2004-03-25 Robert Bosch Gmbh Abgasreinigungsanlage einer Brennkraftmaschine und Verfahren zur Reinigung deren Abgase
US6941746B2 (en) 2002-11-21 2005-09-13 Combustion Components Associates, Inc. Mobile diesel selective catalytic reduction systems and methods
US6761025B1 (en) 2002-12-19 2004-07-13 Caterpillar Inc. Enhanced ammonia feed control for selective catalytic reduction
KR100580699B1 (ko) 2003-10-27 2006-05-15 현대자동차주식회사 커먼 레일 시스템의 2중 제어장치
DE102004055266A1 (de) * 2004-11-17 2006-05-18 Robert Bosch Gmbh Kraftstoffeinspritzanlage mit mehreren Druckspeichern
JP4430524B2 (ja) 2004-12-14 2010-03-10 株式会社日立製作所 エンジン用排気処理装置および処理方法
DE102005037639A1 (de) 2005-08-09 2007-02-15 Friedrich Boysen Gmbh & Co. Kg Vorrichtung und Verfahren zur Reinigung von Abgasen
FR2892766A1 (fr) 2005-10-27 2007-05-04 Renault Sas Dispositif de traitement d'oxydes d'azote pour gaz d'echappement de vehicule automobile
DE102006003639A1 (de) * 2006-01-26 2007-08-02 Robert Bosch Gmbh Hochdruckspeicherkörper mit integriertem Verteilerblock
DE102006007554A1 (de) 2006-02-16 2007-08-23 Hydraulik-Ring Gmbh Förderpumpe, insbesondere für Harnstoffwasserlösung als Abgasnachbehandlungsmedium
US8056577B2 (en) * 2006-03-20 2011-11-15 Tescom Corporation Apparatus and methods to dispense fluid from a bank of containers and to refill same
DE102006012855A1 (de) 2006-03-21 2007-09-27 Robert Bosch Gmbh Verfahren und Dosiersystem zur Schadstoffreduktion in Kraftfahrzeugabgasen
DE102006019051A1 (de) 2006-04-25 2007-10-31 Robert Bosch Gmbh Vorrichtung zur Zufuhr eines Reduktionsmittels in einen Abgasstrang einer Verbrennungskraftmaschine
JP2007327377A (ja) 2006-06-07 2007-12-20 Hitachi Ltd 排気ガス浄化装置
US20090205316A1 (en) 2006-07-13 2009-08-20 Inergy Automotive Systems Research (Societe Anonyme) System and processes for storing an additive and injecting it into the exhaust gases of an engine
US7587890B2 (en) 2006-08-21 2009-09-15 Cummins Inc. Reductant injection rate shaping method for regeneration of aftertreatment systems
US8109077B2 (en) 2006-10-11 2012-02-07 Tenneco Automotive Operating Company Inc. Dual injector system for diesel emissions control
JP4656039B2 (ja) 2006-10-19 2011-03-23 株式会社デンソー エンジンの排気浄化装置
US7799289B2 (en) 2007-07-31 2010-09-21 Caterpillar Inc Exhaust treatment system with NO2 control
DE102007044403B4 (de) 2007-09-18 2011-04-28 Continental Automotive Gmbh Vorrichtung zum Einbringen einer Reduktionsmittelflüssigkeit in ein Abgas einer Verbrennungsanlage
US20130118155A1 (en) 2007-10-19 2013-05-16 Bosch Corporation Control unit and control method for reductant supply device
JP5475243B2 (ja) 2008-03-07 2014-04-16 ボッシュ株式会社 還元剤供給装置の制御装置及び還元剤の回収方法並びに排気浄化装置
US8171722B2 (en) 2008-12-05 2012-05-08 Caterpillar Inc. Fluid delivery system
DE102009015419A1 (de) 2009-03-27 2010-09-30 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren zur Zufuhr von Reduktionsmittel in ein Abgassystem und entsprechendes Abgassystem
WO2010125659A1 (ja) 2009-04-28 2010-11-04 トヨタ自動車株式会社 エンジンの排気浄化装置
US8904760B2 (en) 2009-06-17 2014-12-09 GM Global Technology Operations LLC Exhaust gas treatment system including an HC-SCR and two-way catalyst and method of using the same
US8635855B2 (en) 2009-06-17 2014-01-28 GM Global Technology Operations LLC Exhaust gas treatment system including a lean NOx trap and two-way catalyst and method of using the same
DE102009027182A1 (de) * 2009-06-25 2010-12-30 Robert Bosch Gmbh Einspritzsystem zum Einspritzen von Fluid in einen Abgastrakt
DE102009035940C5 (de) 2009-08-03 2017-04-20 Cummins Ltd. SCR-Abgasnachbehandlungseinrichtung
DE112010003378T5 (de) 2009-08-24 2012-08-02 Cummins Ip, Inc. Vorrichtung, System und Verfahren zum Steuernmehrerer Dieselpartikelfilter
FR2954403B1 (fr) 2009-12-22 2012-03-09 Ti Automotive Fuel Systems Sas Dispositif d'injection d'additifs aqueux dans une ligne d'echappement de vehicule automobile
US8424292B2 (en) 2009-12-31 2013-04-23 General Electric Company Systems and apparatus relating to the monitoring and/or controlling of selective catalytic reduction processes
CN101737133A (zh) 2010-01-22 2010-06-16 中国汽车技术研究中心 具有冷却和防堵塞的尿素水溶液喷射装置及方法
US8381514B2 (en) 2010-02-17 2013-02-26 Tenneco Automotive Operating Company Inc. On-vehicle nitrogen oxide aftertreatment system
US8353153B2 (en) 2010-02-25 2013-01-15 Tenneco Automotive Operating Company Inc. Snapper valve for hot end systems with burners
JP5840829B2 (ja) 2010-05-25 2016-01-06 いすゞ自動車株式会社 Ｓｃｒシステム
DE102010029340A1 (de) 2010-05-27 2011-12-01 Robert Bosch Gmbh Verfahren zum Betreiben eines SCR-Katalysators
EP2576015A1 (en) 2010-06-04 2013-04-10 International Engine Intellectual Property Company, LLC System and method for injecting ammonia into an exhaust gas stream
CN101892888B (zh) 2010-07-26 2012-10-03 东风汽车有限公司 一种用于scr系统的还原剂加注装置
US9528413B2 (en) 2010-07-30 2016-12-27 Ford Global Technologies, Llc Synergistic SCR/DOC configurations for lowering diesel emissions
US8943808B2 (en) 2010-09-27 2015-02-03 Caterpillar Inc. Reductant dosing system
US8402750B2 (en) 2010-12-07 2013-03-26 Tenneco Automotive Operating Company Inc. Reagent tank normalizing system
WO2012125903A2 (en) 2011-03-17 2012-09-20 Raytheon Company Robotic mobile low-profile transport vehicle
CN103348104B (zh) 2011-03-18 2015-12-23 日野自动车株式会社 尿素水重整器及使用了尿素水重整器的废气净化装置
US8661785B2 (en) 2011-04-15 2014-03-04 Ford Global Technologies, Llc System and method for liquid reductant injection
US9719395B2 (en) 2011-05-10 2017-08-01 Albonair Gmbh Component carrier for a dosing system
DE102011077953A1 (de) 2011-06-22 2012-12-27 Robert Bosch Gmbh Einspritzvorrichtung
US8635854B2 (en) 2011-08-05 2014-01-28 Tenneco Automotive Operating Company Inc. Reductant injection control system
US8701389B2 (en) 2011-12-06 2014-04-22 Tenneco Automotive Operating Company Inc. Reagent injector control system
WO2013095214A1 (en) 2011-12-23 2013-06-27 Volvo Lastvagnar Ab Exhaust aftertreatment system and method for operating the system
CN103291421B (zh) 2012-02-23 2016-06-08 天纳克（苏州）排放系统有限公司 空气辅助式还原剂计量喷射系统
US9162183B2 (en) 2012-03-06 2015-10-20 Cummins Inc. System and method to manage SCR catalyst NO2/NOX ratio
DE102012005486B4 (de) * 2012-03-19 2015-03-26 Mtu Friedrichshafen Gmbh Modulare Pumpenanordnung
US8910884B2 (en) 2012-05-10 2014-12-16 Tenneco Automotive Operating Company Inc. Coaxial flow injector
US8997461B2 (en) 2012-05-21 2015-04-07 Cummins Emission Solutions Inc. Aftertreatment system having two SCR catalysts
US20130343959A1 (en) 2012-06-21 2013-12-26 Tenneco Automotive Operating Company Inc. Common rail reductant injection system
JP2014020310A (ja) 2012-07-20 2014-02-03 Hino Motors Ltd 排ガス浄化装置
GB201213443D0 (en) 2012-07-27 2012-09-12 Perkins Engines Co Ltd Apparatus and method for exhaust gas after treatment
US9010096B2 (en) 2012-08-24 2015-04-21 Tenneco Automotive Operating Company Inc. Exhaust component mounting system
JP5908814B2 (ja) 2012-09-13 2016-04-26 株式会社小松製作所 排ガス処理装置、ディーゼルエンジン及び排ガス処理方法
US9273577B2 (en) 2012-10-30 2016-03-01 Cummins Inc. Multi-leg aftertreatment system
US9080487B2 (en) 2012-11-30 2015-07-14 Tenneco Automotive Operating Company, Inc. Reductant injection control system
US9222388B2 (en) * 2013-02-28 2015-12-29 Tenneco Automotive Operating Company Inc. Urea common rail
US9458746B2 (en) 2013-03-01 2016-10-04 Cummins Emission Solutions Inc. Systems and techniques for heating urea injection systems
CN106062330B (zh) 2013-03-15 2018-12-14 康明斯知识产权公司 用于尿素配给系统的泵清除
JP2016514799A (ja) 2013-04-10 2016-05-23 テネコ オートモティブ オペレーティング カンパニー インコーポレイテッドＴｅｎｎｅｃｏ Ａｕｔｏｍｏｔｉｖｅ Ｏｐｅｒａｔｉｎｇ Ｃｏｍｐａｎｙ Ｉｎｃ． エンジン排気ガス後処理システム
US9869226B2 (en) 2013-06-07 2018-01-16 Peerless Mfg. Co. System and method for sequential injection of reagent to reduce NOx from combustion sources
US9394819B2 (en) 2013-07-18 2016-07-19 Komatsu Ltd. Exhaust gas processing device, diesel engine, and exhaust gas processing method
US9546584B2 (en) 2013-08-20 2017-01-17 Baohua Qi Multi-stage SCR system
US9890678B2 (en) 2013-10-03 2018-02-13 Baohua Qi Multi-stage SCR control and diagnostic system
US8920757B1 (en) 2013-10-24 2014-12-30 Cummins Emission Solutions Inc. Reductant dosing control systems and methods
US9192892B2 (en) 2014-01-16 2015-11-24 Cummins Emission Solutions, Inc. Selective dosing module control system
WO2015130219A1 (en) * 2014-02-28 2015-09-03 Scania Cv Ab Method and system for controlling nitrogen oxide emissions from a combustion engine
US9567888B2 (en) 2014-03-27 2017-02-14 Cummins Inc. Systems and methods to reduce reductant consumption in exhaust aftertreament systems
US9387437B2 (en) 2014-05-21 2016-07-12 Caterpillar Inc. Reductant supply system
CN104110293A (zh) 2014-06-09 2014-10-22 武汉添蓝科技有限责任公司 船机scr共轨式添蓝喷射系统
CN104074740A (zh) 2014-07-09 2014-10-01 瑞安市奔达汽车配件有限公司 一种磁性耦合驱动的电动燃油泵
CN204267138U (zh) 2014-11-21 2015-04-15 天纳克（苏州）排放系统有限公司 尾气后处理组件
US9512763B2 (en) * 2014-12-05 2016-12-06 Caterpillar Inc. Diesel exhaust fluid dosing system for diesel engine aftertreatment module
CN204312169U (zh) 2014-12-16 2015-05-06 天纳克（苏州）排放系统有限公司 尿素喷射系统
US20160230720A1 (en) * 2015-02-09 2016-08-11 Caterpillar Inc. Fluid Conditioning Module
CN204646374U (zh) 2015-03-11 2015-09-16 天纳克（苏州）排放系统有限公司 共轨组件及其尿素喷射系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349143A1 (de) * 2003-10-17 2005-05-19 Daimlerchrysler Ag Dosiereinheit
CN101493027A (zh) * 2009-01-14 2009-07-29 无锡市凯龙汽车设备制造有限公司 车辆排气处理用的空气混合计量系统
CN103348106A (zh) * 2011-02-09 2013-10-09 依米泰克排放技术有限公司 用于输送还原剂的输送装置
CN204267135U (zh) * 2014-11-21 2015-04-15 天纳克（苏州）排放系统有限公司 共轨以及具有该共轨的尿素喷射系统
CN104763497A (zh) * 2015-03-11 2015-07-08 天纳克（苏州）排放系统有限公司 共轨组件、尿素喷射系统及其应用

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111535907A (zh) * 2020-05-29 2020-08-14 凯龙高科技股份有限公司 一种尿素溶液供给装置及车用scr系统

Also Published As

Publication number Publication date
EP3228839A1 (en) 2017-10-11
US20170328260A1 (en) 2017-11-16
EP3228839A4 (en) 2018-07-25
US10202883B2 (en) 2019-02-12
EP3228839B1 (en) 2019-09-25

Similar Documents

Publication Publication Date Title
WO2016078538A1 (zh) 共轨组件、尿素喷射系统及其应用
US20210285311A1 (en) Manifold system of low pressure suction and high pressure discharge
US10443466B2 (en) Urea injection system
CN214198165U (zh) 压裂管汇橇和压裂管汇橇组
CN104763497B (zh) 共轨组件、尿素喷射系统及其应用
US10634034B2 (en) Common rail, application of the common rail, carbamide spraying system, and control method therefor
CN107084167B (zh) 一种定比流量输出的液压控制系统及方法
CN204646374U (zh) 共轨组件及其尿素喷射系统
CN204267138U (zh) 尾气后处理组件
CN204267135U (zh) 共轨以及具有该共轨的尿素喷射系统
EP2722505B1 (en) Urea injection system for an internal combustion engine
WO2016074630A1 (zh) 过滤器组件
WO2016078539A1 (zh) 尾气后处理组件
CN107476860A (zh) 一种尿素溶液供给系统
CN110685964B (zh) 一种自动均匀补气减蚀的射流泵
RU11588U1 (ru) Система откачки газа из участка магистрального трубопровода
CN203880400U (zh) 一种降低往复泵管道振动的系统
KR101965853B1 (ko) 배기정화용 우레아 수용액 공급 장치
CN212731660U (zh) 窑内脱硝系统
CN213451939U (zh) 一种新型阀门负压铸锻件
WO2021073536A1 (zh) 船用尿素供给喷射系统及方法
WO2019170225A1 (en) Multi doser scr system
US20230079646A1 (en) Fuel system with ecology function
CN213541368U (zh) 一种一体式的双阀门结构
GB2560373B (en) Multi doser SCR system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15861165

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15528448

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015861165

Country of ref document: EP