WO2018068667A1 - Dispositif de post-traitement de gaz résiduaire - Google Patents

Dispositif de post-traitement de gaz résiduaire Download PDF

Info

Publication number
WO2018068667A1
WO2018068667A1 PCT/CN2017/104330 CN2017104330W WO2018068667A1 WO 2018068667 A1 WO2018068667 A1 WO 2018068667A1 CN 2017104330 W CN2017104330 W CN 2017104330W WO 2018068667 A1 WO2018068667 A1 WO 2018068667A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
mixing
mixing tube
urea
aftertreatment device
Prior art date
Application number
PCT/CN2017/104330
Other languages
English (en)
Chinese (zh)
Inventor
殷雷
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
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
Publication of WO2018068667A1 publication Critical patent/WO2018068667A1/fr

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
    • 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
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • 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
    • F01N2610/1486—Means to prevent the substance from freezing

Definitions

  • the invention relates to an exhaust gas aftertreatment device, and belongs to the technical field of engine exhaust aftertreatment.
  • the uniformity of ammonia distribution in the exhaust gas aftertreatment system (eg, selective catalytic reduction system, SCR system) has an important impact on the overall performance and durability of the system. If the ammonia distribution is uneven, it will lead to excessive ammonia in the local area and easy to cause ammonia leakage, while in other thin ammonia regions, the nitrogen oxide (NOx) conversion efficiency is too low. Uneven distribution of ammonia over a long period of time can result in uneven aging of the catalyst, thereby affecting the overall performance of the catalyst. In addition, the uneven distribution of urea droplets may cause the local tube wall or mixed structure temperature to be too low to form crystallization, which may block the exhaust pipe when severe, resulting in a decrease in engine power performance.
  • SCR system selective catalytic reduction system
  • the present invention adopts the following technical solutions:
  • an exhaust gas aftertreatment device includes a casing, a mixer assembly installed in the casing, and a post-treatment carrier located downstream of the mixer assembly; An exhaust gas inlet passage and a mount for mounting a urea nozzle, the urea nozzle being provided with an injection hole at an end thereof for injecting urea droplets into the mixer assembly; the exhaust gas aftertreatment device is further provided An exhaust gas guiding portion and a blocking piece that cooperates with the exhaust gas guiding portion and at least partially surrounds a periphery of the injection hole, wherein the blocking piece is adjacent to the injection hole, and the exhaust gas guiding portion is provided with The exhaust gas guiding passage is connected to the exhaust gas inlet passage.
  • the mixer assembly includes a mixing tube provided with a mixing chamber in communication with the exhaust gas inlet passage and an exhaust gas for entering the mixing chamber and/or
  • the mixed gas stream of off-gas and urea droplets forms a number of swirls of the vortex.
  • the blocking piece has an arc shape and is located in the mixing cavity, and the exhaust gas guiding channel enters the inner surface of the blocking piece in a tangential direction to form on the inner surface. Swirl.
  • the blocking piece has a C shape or an O shape or a spiral shape.
  • the mixing tube has a cylindrical shape, and the swirling sheet is formed by punching the mixing tube outward, and the swirling sheet is distributed on an outer circumferential surface of the mixing tube.
  • the mixing tube is provided with an opening corresponding to the swirling sheet, and the opening connects the mixing chamber with the exhaust air inlet passage.
  • the mixing tube is provided with a plurality of openings adjacent to the mounting seat and distributed on the outer circumferential surface, and the opening is located in the axial direction of the mixing tube. Between the mount and the swirling sheet.
  • the housing is provided with a cover plate welded on one end of the mixing tube, the mounting seat is welded on one side of the cover plate, the blocking piece and/or the The exhaust gas guide is welded to the other side of the cover.
  • the exhaust gas guiding portion is fixed on the mixing tube, and the exhaust gas guiding passage is provided with an exhaust gas guiding port exposed on the mixing tube.
  • the mixer assembly is provided with a bowl cover at the bottom of the mixing tube and a Z-shaped partition plate cooperating with the mixing tube, wherein the mixing tube comprises an air outlet at the lower end Separating the housing into a first cavity and a second cavity, wherein the first cavity is in communication with the mixing cavity, and the second cavity is in communication with the airflow outlet,
  • the bowl lid is used to force the airflow to flow in the opposite direction.
  • the mixer assembly is provided with a disk-shaped mounting portion and an interference flow sheet that protrudes from the mounting portion and extends toward the post-processing carrier.
  • the present invention can provide at least a small portion of the exhaust gas directly to the vicinity of the injection hole by providing the exhaust gas guiding passage, and form a swirling flow under the action of the flap.
  • the temperature near the injection hole is increased, and the risk of urea crystallization is lowered; on the other hand, the swirl formed by the flap can quickly take the sprayed urea droplet away, avoiding death.
  • the zone thus also reduces the risk of urea crystallization.
  • Figure 1 is a perspective view of an exhaust gas aftertreatment device of the present invention.
  • Fig. 2 is a partially exploded perspective view of Fig. 1;
  • Figure 3 is a further exploded perspective view of Figure 2.
  • FIG. 4 is a perspective view of the exhaust gas guiding portion and the flap of FIG. 3.
  • Figure 5 is a perspective view of the mixer assembly of Figure 2.
  • Fig. 6 is a partially exploded perspective view of Fig. 5;
  • Figure 7 is a partially exploded perspective view of another angle of Figure 6.
  • Figure 8 is a partial enlarged view of the circled portion of Figure 5.
  • Figure 9 is a partially exploded perspective view of another embodiment of the mixer assembly, wherein the structure of the flap is slightly different from that of Figure 6.
  • Figure 10 is a partially exploded perspective view of the other angle of Figure 9.
  • Figure 11 is a cross-sectional view taken along line A-A of Figure 1.
  • Figure 12 is a cross-sectional view showing another embodiment of the exhaust gas aftertreatment device of the present invention.
  • the present invention discloses an exhaust aftertreatment device 100 for treating exhaust gas of a diesel engine, comprising a housing 1, a mixer assembly 2 mounted in the housing 1.
  • the post-treatment carrier 3 includes a selective catalytic reducing agent (SCR) 31 and an ammonia leakage catalyst (ASC) 32.
  • the housing 1 is provided with an exhaust gas intake passage 11, a mounting seat 12 for mounting the urea nozzle 5, and a cover plate 13 for welding the mounting seat 12.
  • the urea nozzle 5 is provided with an injection hole 51 at its end for injecting urea droplets into the mixer assembly 2.
  • the mixer assembly 2 includes a mixing tube 21, a bowl cover 22 at the bottom of the mixing tube 21, and a Z-shaped partition 23 that mates with the mixing tube 21.
  • the mixing tube 21 has a cylindrical shape, and is provided with a mixing chamber 211 communicating with the exhaust gas inlet passage 11 and exhaust gas for entering the mixing chamber 211 and / or a mixed gas stream of exhaust gas and urea droplets forms a plurality of swirl fins 212 of the vortex flow.
  • the swirling sheet 212 is formed by punching the mixing tube 21 outward, and the swirling sheet 212 is distributed on the outer circumferential surface of the mixing tube 21.
  • the mixing tube 21 is provided with an opening 213 corresponding to the swirling fin 212, and the opening 213 connects the mixing chamber 211 with the exhaust gas inlet passage 11.
  • the mixing tube 21 is provided with a plurality of openings 214 adjacent to the mounting seat 12 and distributed on the outer circumferential surface, the opening 214 being located in the mounting seat in the axial direction of the mixing tube 21. 12 is between the swirling sheet 212.
  • the opening 214 allows a portion of the exhaust gas to pass through, and on the one hand increases the temperature near the urea nozzle 5, The risk of urea crystallization is reduced; on the other hand, it helps to carry away the sprayed urea droplets, which also reduces the risk of urea crystallization.
  • the mixing tube 21 further includes an air outlet 215 at the lower end (see Fig. 11).
  • the partition plate 23 partitions the casing 1 into a first cavity 231 and a second cavity 232, wherein the first cavity 231 is in communication with the mixing cavity 211, and the second cavity 232 is The airflow outlet 215 is connected.
  • the bowl cover 22 is used to force the airflow to flow in the opposite direction, increasing the distance and time for the urea to evaporate, and improving the uniformity of the airflow mixing.
  • the anti-urea crystal structure 4 is like a whistle in the illustrated embodiment of the present invention, which includes an exhaust gas guiding portion 41 and cooperates with the exhaust gas guiding portion 41 and at least partially surrounds a baffle 42 at the periphery of the injection hole 51, wherein the baffle 42 is adjacent to the injection hole 51, and the exhaust gas guiding portion 41 is provided with an exhaust gas guiding passage 411 communicating with the exhaust gas intake passage 11 .
  • the blocking piece 42 has an arc shape and is located in the mixing chamber 211.
  • the exhaust gas guiding passage 411 enters the inner surface of the flap 42 in a tangential direction to form a swirl on the inner surface.
  • the exhaust gas guiding portion 41 may be one or more.
  • the blocking piece 42 has an O shape.
  • the blocking piece 42 has a C shape.
  • the flap 42 may also have a spiral shape or the like which is easy to form a swirling flow. In other embodiments, the flap may also have other shapes such as a V shape.
  • the cover plate 13 is welded to one end (for example, the upper end) of the mixing tube 21.
  • the mounting seat 12 is welded to one side (for example, the upper side) of the cover plate 13, and the blocking piece 42 and/or the exhaust gas guiding portion 41 are welded to the other side of the cover plate 13 (for example, side).
  • the exhaust gas guiding portion 41 is fixed to the mixing tube 21.
  • the exhaust gas guiding passage 411 is provided with an exhaust gas guiding port exposed on the mixing pipe 21.
  • the aforementioned anti-urea crystal structure 4 can also be applied to another embodiment of the exhaust gas aftertreatment device 100 of the present invention.
  • the same reference numerals indicate the same or similar elements.
  • the exhaust gas aftertreatment device 100 in the second embodiment is different from the structure of the exhaust gas aftertreatment device 100 in the first embodiment, wherein in the second embodiment, the mixer assembly 2 is provided with a disk-shaped mounting portion. And an interference flow sheet 25 that protrudes from the mounting portion 24 and extends toward the post-processing carrier 3.
  • the spoiler 25 can improve the mixing uniformity of the atomized urea droplets and the exhaust gas.

Landscapes

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

Abstract

L'invention concerne un dispositif de post-traitement de gaz résiduaire, comprenant un boîtier (1), un ensemble mélangeur (2) et un support de post-traitement (3). Le boîtier est pourvu d'un canal d'entrée de gaz résiduaire (11), et d'une base d'installation (12) pour installer une buse d'urée (5). La buse d'urée est pourvue d'un trou de pulvérisation (51) situé au niveau d'une extrémité de queue de la buse d'urée. Le dispositif de post-traitement de gaz résiduaire est en outre pourvu d'une partie de guidage de gaz résiduaire (41) et d'une pièce de blocage (42) entourant au moins partiellement la périphérie du trou de pulvérisation, la partie de guidage de gaz résiduaire étant pourvue d'un canal de guidage de gaz résiduaire (411) en communication avec le canal d'entrée de gaz résiduaire. Un tel agencement augmente la température à proximité du trou de pulvérisation, et réduit le risque de cristallisation d'urée. De plus, le flux tourbillonnant formé par la pièce de blocage peut rapidement éloigner les gouttes de liquide d'urée pulvérisées, ce qui permet d'éviter des zones mortes et de réduire également le risque de cristallisation d'urée.
PCT/CN2017/104330 2016-10-12 2017-09-29 Dispositif de post-traitement de gaz résiduaire WO2018068667A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610888496.X 2016-10-12
CN201610888496.XA CN106246303B (zh) 2016-10-12 2016-10-12 尾气后处理装置

Publications (1)

Publication Number Publication Date
WO2018068667A1 true WO2018068667A1 (fr) 2018-04-19

Family

ID=57611570

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/104330 WO2018068667A1 (fr) 2016-10-12 2017-09-29 Dispositif de post-traitement de gaz résiduaire

Country Status (2)

Country Link
CN (1) CN106246303B (fr)
WO (1) WO2018068667A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3760846A1 (fr) * 2019-07-04 2021-01-06 Donaldson Company, Inc. Système permettant de mélanger un liquide pulvérisé dans un flux gazeux et dispositif de post-traitement d'échappement le comprenant
WO2023041843A1 (fr) * 2021-09-16 2023-03-23 Proventia Oy Dispositif d'écoulement

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246303B (zh) * 2016-10-12 2019-01-15 天纳克（苏州）排放系统有限公司 尾气后处理装置
CN106640301A (zh) * 2017-02-22 2017-05-10 天纳克（苏州）排放系统有限公司 尾气后处理装置
CN109083722A (zh) * 2017-06-14 2018-12-25 天纳克（苏州）排放系统有限公司 发动机排气后处理混合装置及其后处理装置与应用
CN107165704A (zh) * 2017-07-27 2017-09-15 天纳克（苏州）排放系统有限公司 发动机排气后处理混合装置及其后处理装置与应用
CN108915831B (zh) 2017-09-19 2021-04-02 天纳克（苏州）排放系统有限公司 尾气后处理混合装置
CN108194179A (zh) * 2018-03-14 2018-06-22 潍柴动力股份有限公司 一种后处理进气混合装置
CN108979803B (zh) * 2018-07-25 2023-07-25 武汉水草能源科技研发中心(有限合伙) 液体与气体混合的方法及装置
CN109973185B (zh) * 2019-03-20 2021-01-12 苏州国方汽车电子有限公司 一种用于柴油机尾气后处理的排气混合结构
CN116764406B (zh) * 2023-06-15 2024-05-28 连云港石化有限公司 一种低阻力尾气协同净化装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070163241A1 (en) * 2004-01-30 2007-07-19 Ulrich Meingast Method and apparatus for posttreatment of an exhaust gas from an internal combustion engine
JP2009030561A (ja) * 2007-07-30 2009-02-12 Bosch Corp 内燃機関の排気浄化装置
CN205190011U (zh) * 2015-12-02 2016-04-27 无锡威孚力达催化净化器有限责任公司 一种筒式scr后处理混合腔
CN105673150A (zh) * 2016-04-11 2016-06-15 天纳克（苏州）排放系统有限公司 尾气后处理装置
CN106246303A (zh) * 2016-10-12 2016-12-21 天纳克（苏州）排放系统有限公司 尾气后处理装置
CN206129367U (zh) * 2016-10-12 2017-04-26 天纳克（苏州）排放系统有限公司 尾气后处理装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202028346U (zh) * 2010-12-15 2011-11-09 杭州银轮科技有限公司 一种用于柴油机尿素选择性催化还原装置的静态混合器
JP5349575B2 (ja) * 2011-12-27 2013-11-20 株式会社小松製作所 還元剤水溶液ミキシング装置及び排気ガス後処理装置
JP6125248B2 (ja) * 2013-01-31 2017-05-10 日野自動車株式会社 尿素水ミキシング構造
CN104594990B (zh) * 2015-02-27 2017-06-23 天纳克（苏州）排放系统有限公司 混合管及其排气处理装置
CN105089750B (zh) * 2015-08-21 2018-04-06 天纳克（苏州）排放系统有限公司 排气处理装置
CN205243598U (zh) * 2015-12-18 2016-05-18 天纳克（苏州）排放系统有限公司 发动机排气后处理装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070163241A1 (en) * 2004-01-30 2007-07-19 Ulrich Meingast Method and apparatus for posttreatment of an exhaust gas from an internal combustion engine
JP2009030561A (ja) * 2007-07-30 2009-02-12 Bosch Corp 内燃機関の排気浄化装置
CN205190011U (zh) * 2015-12-02 2016-04-27 无锡威孚力达催化净化器有限责任公司 一种筒式scr后处理混合腔
CN105673150A (zh) * 2016-04-11 2016-06-15 天纳克（苏州）排放系统有限公司 尾气后处理装置
CN106246303A (zh) * 2016-10-12 2016-12-21 天纳克（苏州）排放系统有限公司 尾气后处理装置
CN206129367U (zh) * 2016-10-12 2017-04-26 天纳克（苏州）排放系统有限公司 尾气后处理装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3760846A1 (fr) * 2019-07-04 2021-01-06 Donaldson Company, Inc. Système permettant de mélanger un liquide pulvérisé dans un flux gazeux et dispositif de post-traitement d'échappement le comprenant
WO2021003291A1 (fr) * 2019-07-04 2021-01-07 Donaldson Company, Inc. Système d'incorporation d'une brume de liquide dans un flux gazeux et dispositif de post-traitement des gaz d'échappement le comprenant
US11767783B2 (en) 2019-07-04 2023-09-26 Donaldson Company, Inc. System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same
WO2023041843A1 (fr) * 2021-09-16 2023-03-23 Proventia Oy Dispositif d'écoulement

Also Published As

Publication number Publication date
CN106246303A (zh) 2016-12-21
CN106246303B (zh) 2019-01-15

Similar Documents

Publication Publication Date Title
WO2018068667A1 (fr) Dispositif de post-traitement de gaz résiduaire
US10704448B2 (en) Exhaust gas after-treatment mixing device and package therefor
WO2018006718A1 (fr) Dispositif de post-traitement de gaz résiduaire
WO2017215458A1 (fr) Appareil de post-traitement de gaz d'échappement
CN107120162B (zh) 用于发动机尾气后处理系统的混合装置
US20200217233A1 (en) Exhaust gas after-treatment mixing device
WO2018095140A1 (fr) Dispositif de post-traitement d'échappement
WO2018153162A1 (fr) Appareil de post-traitement de gaz résiduaire
WO2019144600A1 (fr) Dispositif de post-traitement des gaz d'échappement
WO2018095141A1 (fr) Dispositif de post-traitement des gaz d'échappement
CN206129367U (zh) 尾气后处理装置
WO2018149053A1 (fr) Appareil de post-traitement des gaz d'échappement
WO2016146015A1 (fr) Tube mélangeur et dispositif de traitement des gaz d'échappement associé
WO2018006719A1 (fr) Dispositif de post-traitement de gaz résiduaire
WO2017032231A1 (fr) Appareil de traitement de gaz d'échappement
WO2017101628A1 (fr) Dispositif de post-traitement d'échappement de moteur
WO2019144602A1 (fr) Dispositif de post-traitement de gaz d'échappement
WO2020155834A1 (fr) Appareil de mélange d'injection d'urée à aube de turbulence
CN112196646A (zh) 混合器组件以及尾气后处理封装
WO2017215461A1 (fr) Appareil de post-traitement des gaz d'échappement
WO2017215460A1 (fr) Appareil de mélange pour post-traitement de gaz d'échappement
CN109356693B (zh) 一种紧凑式混合器组件
WO2021223360A1 (fr) Dispositif de mélange de post-traitement de gaz résiduaire et dispositif de post-traitement de gaz résiduaire
WO2018006720A1 (fr) Module de mélange
WO2019128164A1 (fr) Dispositif de mélange pour post-traitement des gaz d'échappement, et son carter

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: 17859807

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17859807

Country of ref document: EP

Kind code of ref document: A1