WO2017150513A1 - Dispositif de purification des gaz d'échappement pour moteur à combustion interne - Google Patents

Dispositif de purification des gaz d'échappement pour moteur à combustion interne Download PDF

Info

Publication number
WO2017150513A1
WO2017150513A1 PCT/JP2017/007727 JP2017007727W WO2017150513A1 WO 2017150513 A1 WO2017150513 A1 WO 2017150513A1 JP 2017007727 W JP2017007727 W JP 2017007727W WO 2017150513 A1 WO2017150513 A1 WO 2017150513A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
casing
pipe
inlet
outlet
Prior art date
Application number
PCT/JP2017/007727
Other languages
English (en)
Japanese (ja)
Inventor
幸博 川島
Original Assignee
いすゞ自動車株式会社
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 いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN201780014359.6A priority Critical patent/CN108884740A/zh
Publication of WO2017150513A1 publication Critical patent/WO2017150513A1/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
    • 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

Definitions

  • the present disclosure relates to an exhaust gas purification device for an internal combustion engine including an aftertreatment unit.
  • an exhaust gas purification device including an aftertreatment unit provided in the middle of an exhaust pipe and having a plurality of catalysts for purifying harmful substances in exhaust gas is known.
  • the post-treatment unit is accommodated in a casing in order to keep the temperature of the catalyst at a high temperature.
  • the casing is provided with an inlet hole through which the exhaust gas inlet pipe of the aftertreatment unit is inserted and an outlet hole through which the exhaust gas outlet pipe of the aftertreatment unit is inserted.
  • an object of the present disclosure is an internal combustion engine that can suppress the heat of the post-processing unit from being taken away by the casing and suppress the temperature decrease of the catalyst of the post-processing unit.
  • An object is to provide an exhaust gas purification device.
  • An exhaust gas purification apparatus for an internal combustion engine includes an exhaust pipe, an aftertreatment unit provided in the middle of the exhaust pipe and having a plurality of catalysts for purifying exhaust gas, and a casing that houses the aftertreatment unit.
  • an outlet side heat insulating seal member provided in a gap between the exhaust gas outlet pipe and the outlet hole.
  • the exhaust gas purification apparatus for an internal combustion engine it is possible to suppress the heat of the aftertreatment unit from being taken away by the casing, and to exhibit an excellent effect that the temperature decrease of the catalyst of the aftertreatment unit can be suppressed.
  • FIG. 1 is a schematic configuration diagram illustrating an exhaust gas purification apparatus according to an embodiment of the present disclosure.
  • FIG. 2 is an enlarged view of a main part of FIG.
  • FIG. 1 is a schematic configuration diagram illustrating an exhaust gas purification apparatus for an internal combustion engine according to an embodiment of the present disclosure
  • FIG. 2 is an enlarged view of a main part thereof.
  • an exhaust gas purification apparatus 100 is an aftertreatment unit having an exhaust pipe 2 through which exhaust gas from an internal combustion engine 1 passes and a plurality of catalysts 10 provided in the middle of the exhaust pipe 2 for purifying exhaust gas. 3 and a casing 4 that houses the post-processing unit 3.
  • the internal combustion engine 1 is a multi-cylinder compression ignition internal combustion engine mounted on a vehicle (not shown), that is, a diesel engine.
  • the internal combustion engine 1 is provided with an exhaust manifold 12 that collects exhaust gas discharged from each cylinder 11.
  • the exhaust pipe 2 is a pipe that is connected to the exhaust manifold 12 and discharges the exhaust gas from the exhaust manifold 12 in the downstream direction (direction indicated by the arrow G) and releases it to the atmosphere.
  • the exhaust pipe 2 includes an upstream exhaust pipe 21 positioned upstream of the post-processing unit 3 and a downstream exhaust pipe 22 positioned downstream of the post-processing unit 3.
  • the upstream exhaust pipe 21 has a flange 21a at its downstream end
  • the downstream exhaust pipe 22 has a flange 22a at its upstream end.
  • the front-rear and left-right directions of the post-processing unit 3 are shown in FIG. Note that the front-rear and left-right directions of the illustrated post-processing unit 3 are irrelevant to the front-rear and left-right directions of the vehicle, and are merely determined for convenience of explanation.
  • the internal combustion engine 1 is placed vertically on the vehicle, and the left direction of the post-processing unit 3 coincides with the front direction of the vehicle.
  • the aftertreatment unit 3 includes an exhaust gas inlet pipe 31, an exhaust gas outlet pipe 32, a first catalyst casing 33 in which at least one catalyst 10 is provided, a second catalyst casing 34 in which at least one catalyst 10 is provided, A connecting pipe 35 connecting the first catalyst casing 33 and the second catalyst casing 34 and an addition valve 36 for adding urea water are provided. Further, the post-processing unit 3 has a substantially symmetrical structure.
  • the exhaust gas inlet pipe 31 is arranged at the front end and the left side of the post-processing unit 3 and extends from the front to the rear, and the front end is connected to the downstream end of the upstream exhaust pipe 21. Further, the exhaust gas outlet pipe 32 is disposed at the front end and the right side of the post-processing unit 3, extends from the front to the rear, and the front end is connected to the upstream end of the downstream exhaust pipe 22.
  • a flange 31a is provided at the upstream end of the exhaust gas inlet pipe 31, and the flange 21a of the upstream exhaust pipe 21 is connected to the flange 31a.
  • a flange 32a is provided at the downstream end of the exhaust gas outlet pipe 32, and the flange 22a of the downstream exhaust pipe 22 is connected to the flange 32a.
  • the flanges connected to each other are detachably fixed by fastening means such as bolts (not shown).
  • the first catalyst casing 33 is formed in a tubular shape, extends rearward from the exhaust gas inlet pipe 31, and has a first side hole 33b on the right side surface of the downstream end 33a located at the rear end. Further, the first catalyst casing 33 is formed with a first enlarged-diameter portion 33c having a diameter larger than that of the exhaust gas inlet pipe 31 located on the upstream side and the connecting pipe 35 located on the downstream side.
  • the first catalyst casing 33 has an oxidation catalyst (DOC: Diesel Oxidation Catalyst) 10a and a particulate filter (hereinafter referred to as “the catalyst”) from the upstream side through the first heat insulating buffer member (mat) 37 at the position of the first enlarged diameter portion 33c. (Referred to as “DPF”) 10b.
  • DOC Diesel Oxidation Catalyst
  • the catalyst a particulate filter
  • the oxidation catalyst 10a oxidizes and purifies unburned components (hydrocarbon HC and carbon monoxide CO) in the exhaust gas.
  • the oxidation catalyst 10a has a function of heating and raising the temperature of exhaust gas with heat generated during oxidation of HC and CO.
  • the oxidation catalyst 10a oxidizes NO in the exhaust gas to NO 2, also has a function of increasing the NO 2 concentration in the exhaust gas.
  • the DPF 10b collects and removes particulate matter (PM) contained in the exhaust gas.
  • a so-called wall flow type DPF 10b is used in which openings at both ends of a honeycomb-shaped heat-resistant substrate are alternately closed in a checkered pattern.
  • any type of filter that physically captures PM can be used, such as a mesh-shaped foam shape.
  • the DPF 10b is a so-called continuous regeneration type DPF with a catalyst in which a noble metal (catalyst) such as Pt is supported on the inner wall thereof.
  • a noble metal such as Pt
  • HC in the exhaust gas supplied to the DPF 10b is oxidized and burned by the catalytic action, and at this time, PM accumulated in the DPF 10b is simultaneously burned and removed.
  • DPF10b since DPF10b has a catalyst, DPF10b shall also be included in the catalyst 10 said to this indication here.
  • the second catalyst casing 34 is formed in a tubular shape, extends rearward from the exhaust gas outlet pipe 32, and has a second side hole 34b on the left side surface of the upstream end 34a located at the rear end. Further, the second catalyst casing 34 is formed with a second diameter-expanded portion 34c having a diameter larger than that of the connecting pipe 35 positioned on the upstream side and the exhaust gas outlet pipe 32 positioned on the downstream side.
  • the NOx catalyst 10c and the ammonia oxidation catalyst 10d are installed from the upstream side through the second heat insulating buffer member (mat) 38 at the position of the second enlarged diameter portion 34c.
  • the NOx catalyst 10c is a catalyst for purifying nitrogen oxides NOx in the exhaust gas.
  • the NOx catalyst 10c is composed of a selective reduction type NOx catalyst (SCR: Selective Catalytic Reduction), and can continuously reduce NOx by ammonia (NH 3 ) generated by hydrolysis from urea water.
  • SCR selective reduction type NOx catalyst
  • the ammonia oxidation catalyst 10d is a catalyst that generates N 2 by oxidizing excess ammonia (NH 3 ) that has not been consumed in the reduction of NOx by the NOx catalyst 10c.
  • the first catalyst casing 33 and the second catalyst casing 34 are arranged on the left and right in parallel with each other. Further, the first side hole 33b and the second side hole 34d are disposed at positions facing each other.
  • the connecting pipe 35 is disposed at a position between the first catalyst casing 33 and the second catalyst casing 34 in the left-right direction, and connects the first side hole 33b and the second side hole 34b.
  • the connecting pipe 35 extends from the first side hole 33b toward the second side hole 34b (the right side in the figure) and bends forward, and the second side hole 34b extends to the first side hole 33b.
  • a second portion 35b extending toward the side (the left side in the figure) and bent forward.
  • the first portion 35a indicates a portion from X1 to X2 in the drawing
  • the second portion 35b indicates a portion from Y1 to Y2 in the drawing.
  • the connecting pipe 35 has a third portion 35c that extends forward from the downstream end X2 of the first portion 35a, is folded back in a U-shape and extends rearward, and is connected to the upstream end Y2 of the second portion 35b. . That is, the connection pipe 35 is formed in such a manner that it is folded in a U-shape, so that the pipe length of the connection pipe 35 becomes longer than linearly connecting the first side hole 33b and the second side hole 34d.
  • the addition valve 36 is arranged so as to add urea water from the rear to the front from the bent part L of the first part 35a toward the folded part U of the third part 35c.
  • the casing 4 is made of a box-type casing using a heat-resistant material such as stainless steel, and covers the entire post-processing unit 3 in a substantially airtight manner.
  • a heat insulating material 5 such as glass wool is laid on almost the entire inner peripheral surface of the casing 4 to keep the post-processing unit 3 warm.
  • an attachment portion 42 for attaching the addition valve 36 is formed at a portion located behind the bent portion L of the post-processing unit 3.
  • the attachment portion 42 is formed to be recessed forward, and an outer insertion hole 43 extending in the front-rear direction is formed at the front end thereof.
  • an inner insertion hole 35 d is formed coaxially with the outer insertion hole 43 on the rear end surface of the bent portion L of the post-processing unit 3.
  • the addition valve 36 is inserted into both the outer insertion hole 43 and the inner insertion hole 35 d from the outside (rear) of the casing 4, and is fixed to the casing 4 by a boss portion 44 provided in the attachment portion 42.
  • An inlet hole 46 through which the exhaust gas inlet pipe 31 is inserted with a gap S1 is formed in the front surface 45 of the casing 4 so that the exhaust gas inlet pipe 31 of the post-processing unit 3 protrudes to the outside (front) of the casing 4.
  • an outlet hole 47 through which the exhaust gas outlet pipe 32 is inserted with a gap S2 is formed in the front surface 45 of the casing 4 so that the exhaust gas outlet pipe 32 of the post-processing unit 3 protrudes to the outside (front) of the casing 4.
  • the inlet side heat insulating seal member 6 is provided in the gap S1 between the exhaust gas inlet pipe 31 and the inlet hole 46
  • the outlet side heat insulating seal member 7 is provided in the gap S2 between the exhaust gas outlet pipe 32 and the outlet hole 47.
  • the inlet side heat insulating seal member 6 is made of a ring-shaped seal member through which the exhaust gas inlet pipe 31 can be inserted, and is made of a material having a low heat transfer coefficient, for example, heat resistant rubber.
  • a support member 48 for attaching the inlet side heat insulating seal member 6 to the casing 4 is formed so as to protrude from the back surface of the front surface 45 of the casing 4 and around the inlet hole 46.
  • a support member 49 similar to the support member 48 is formed on the back surface of the front surface 45 of the casing 4 and around the outlet hole 47.
  • the support member 48 is formed in a ring shape, and has an inner diameter that is larger than the inlet hole 46 and slightly smaller than the outer diameter of the inlet-side heat insulating seal member 6.
  • the inlet side heat insulating seal member 6 is press-fitted into the support member 48 from behind.
  • the exhaust gas of the internal combustion engine 1 passes through the upstream exhaust pipe 21 from the exhaust manifold 12 and flows into the first catalyst casing 33 through the exhaust gas inlet pipe 31.
  • the exhaust gas flowing into the first catalyst casing 33 passes through the oxidation catalyst 10a, whereby unburned components (hydrocarbon HC and carbon monoxide CO) in the exhaust gas are oxidized and purified.
  • the exhaust gas that has passed through the oxidation catalyst 10a flows into the DPF 10b, and particulate matter (PM) contained in the exhaust gas is collected and removed by the DPF 10b.
  • PM particulate matter
  • the exhaust gas that has passed through the DPF 10b flows from the first side hole 33b located at the rear end of the first catalyst casing 33 to the first portion 35a of the connecting pipe 35, and moves forward 90 ° along the bent shape of the first portion 35a. The direction is changed to flow to the third portion 35c.
  • the exhaust gas that has flowed to the third portion 35c turns 180 ° backward at the turn-up portion U, flows to the second portion 35b behind, and turns 90 ° along the bent shape of the second portion 35b. It flows into the second catalyst casing 34 through the side hole 34b.
  • the addition valve 36 disposed in the bent portion L of the first portion 35a adds urea water from the rear to the front toward the folded portion U of the third portion 35c.
  • the added urea water is turned 180 ° rearward at the folded portion U, flows to the second rear portion 35b, is turned 90 ° along the bent shape of the second portion 35b, and the second side hole 34b.
  • the second catalyst casing 34 Through the second catalyst casing 34.
  • the exhaust gas containing at least one of urea water and ammonia passes through the NOx catalyst 10c.
  • the NOx catalyst 10c reduces NOx with ammonia generated by hydrolysis of urea water.
  • the surplus ammonia that has not been consumed in the reduction of NOx by the NOx catalyst 10c comes into contact with the ammonia oxidation catalyst 10d and is oxidized, and release to the atmosphere is suppressed.
  • the exhaust gas that has passed through the ammonia oxidation catalyst 10d is discharged to the downstream exhaust pipe 22 through the exhaust gas outlet pipe 32 and is released from the downstream exhaust pipe 22 to the atmosphere.
  • the oxidation catalyst 10a, the DPF 10b, the NOx catalyst 10c, and the ammonia oxidation catalyst 10d effectively exhibit the exhaust gas purification action when the catalyst temperature (catalyst bed temperature) is in the active temperature range. To do. Therefore, it is effective to keep the temperature of each catalyst 10 as high as possible.
  • the post-processing unit 3 is accommodated in the casing 4 in which the heat insulating material 5 is laid on the inner peripheral surface, thereby suppressing the post-processing unit 3 from being cooled by outside air or traveling wind,
  • the temperature of the catalyst 10 can be kept high.
  • the inlet-side heat insulating seal member 6 is provided in the gap S1 between the exhaust gas inlet pipe 31 and the inlet hole 46 and the exhaust gas outlet pipe 32 is provided.
  • the outlet side heat insulating seal member 7 is provided in the gap S2 between the outlet hole 47 and the outlet hole 47.
  • the inlet side heat insulating seal member 6 and the outlet side heat insulating seal member 7 seal the gaps S1 and S2 between the exhaust gas outlet pipe 32 and the outlet hole 47, respectively, thereby corroding the post-processing unit 3 due to water intrusion from the gap. Can be prevented.
  • the connecting pipe 35 is formed in a U-shape, it is connected rather than connecting the first side hole 33b and the second side hole 34d linearly.
  • the length of the tube 35 can be increased, and the post-processing unit 3 can be made compact, which is advantageous for in-vehicle use.
  • the urea water added from the addition valve 36 passes through this long and folded connection pipe 35.
  • the urea water can be sufficiently stirred and mixed with the exhaust gas, and the hydrolysis of the urea water is further promoted.
  • ammonia is efficiently generated, which is advantageous for improving the NOx purification rate in the NOx catalyst 10c.
  • the exhaust gas purifying apparatus for an internal combustion engine according to the present disclosure is useful in that the heat of the aftertreatment unit is suppressed from being taken away by the casing, and the temperature decrease of the catalyst of the aftertreatment unit can be suppressed.

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)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un dispositif de purification des gaz d'échappement (100) pour un moteur à combustion interne (1), ledit dispositif étant pourvu : d'un tuyau d'échappement (2) ; d'une unité de post-traitement (3) qui est pourvue d'une pluralité de catalyseurs (10) pour purifier des gaz d'échappement ; un boîtier (4) dans lequel l'unité de post-traitement (3) est logée ; d'un trou d'entrée (46) qui est disposé dans le boîtier (4), et à travers lequel un tuyau d'entrée des gaz d'échappement (31) de l'unité de post-traitement (3) est passé de telle sorte qu'un espace (S1) est disposé entre ceux-ci ; un trou de sortie (47) à travers lequel un conduit de sortie des gaz d'échappement (32) de l'unité de post-traitement (3) est passé de telle sorte qu'un espacement (S2) est disposé entre ceux-ci ; un matériau d'isolation thermique (5) disposé sur la surface périphérique interne du boîtier (4) ; et des éléments d'étanchéité d'isolation thermique (6, 7) qui sont prévus dans les espacements (S1, S2).
PCT/JP2017/007727 2016-03-03 2017-02-28 Dispositif de purification des gaz d'échappement pour moteur à combustion interne WO2017150513A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780014359.6A CN108884740A (zh) 2016-03-03 2017-02-28 内燃机的排气净化装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016041293A JP2017155693A (ja) 2016-03-03 2016-03-03 内燃機関の排ガス浄化装置
JP2016-041293 2016-03-03

Publications (1)

Publication Number Publication Date
WO2017150513A1 true WO2017150513A1 (fr) 2017-09-08

Family

ID=59742903

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/007727 WO2017150513A1 (fr) 2016-03-03 2017-02-28 Dispositif de purification des gaz d'échappement pour moteur à combustion interne

Country Status (3)

Country Link
JP (1) JP2017155693A (fr)
CN (1) CN108884740A (fr)
WO (1) WO2017150513A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042115U (fr) * 1973-08-20 1975-04-28
JPS5258308U (fr) * 1975-10-24 1977-04-27
JPS5351505U (fr) * 1976-10-05 1978-05-02
JPH074825U (ja) * 1993-06-17 1995-01-24 ダイハツ工業株式会社 触媒コンバータの支持構造
JPH07259545A (ja) * 1994-03-23 1995-10-09 Toyota Motor Corp 触媒コンバータ
JP2003531994A (ja) * 2000-04-26 2003-10-28 ヨット エーバーシュペッヘル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト 排ガス設備の排ガス装置、特にモジュール構成形式の自動車触媒装置
JP2004525777A (ja) * 2001-05-18 2004-08-26 ヘス エンジニアリング，インコーポレーテッド． 触媒変換機の製造方法および装置
JP2014088878A (ja) * 2013-12-25 2014-05-15 Yanmar Co Ltd 作業車両搭載用のエンジン装置
JP2014194204A (ja) * 2013-03-29 2014-10-09 Yanmar Co Ltd 排気ガス浄化装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233886C3 (de) * 1972-07-10 1985-04-18 Kali-Chemie Ag, 3000 Hannover Vorrichtung zur katalytischen Reinigung der Abgase von Brennkraftmaschinen
JPH072971Y2 (ja) * 1988-01-29 1995-01-30 本田技研工業株式会社 消音器
US7774936B2 (en) * 2004-08-02 2010-08-17 Emcon Technologies Llc Catalytic converter and associated method of assembly
JP2008240525A (ja) * 2007-03-23 2008-10-09 Toyota Motor Corp 排気浄化装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042115U (fr) * 1973-08-20 1975-04-28
JPS5258308U (fr) * 1975-10-24 1977-04-27
JPS5351505U (fr) * 1976-10-05 1978-05-02
JPH074825U (ja) * 1993-06-17 1995-01-24 ダイハツ工業株式会社 触媒コンバータの支持構造
JPH07259545A (ja) * 1994-03-23 1995-10-09 Toyota Motor Corp 触媒コンバータ
JP2003531994A (ja) * 2000-04-26 2003-10-28 ヨット エーバーシュペッヘル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト 排ガス設備の排ガス装置、特にモジュール構成形式の自動車触媒装置
JP2004525777A (ja) * 2001-05-18 2004-08-26 ヘス エンジニアリング，インコーポレーテッド． 触媒変換機の製造方法および装置
JP2014194204A (ja) * 2013-03-29 2014-10-09 Yanmar Co Ltd 排気ガス浄化装置
JP2014088878A (ja) * 2013-12-25 2014-05-15 Yanmar Co Ltd 作業車両搭載用のエンジン装置

Also Published As

Publication number Publication date
CN108884740A (zh) 2018-11-23
JP2017155693A (ja) 2017-09-07

Similar Documents

Publication Publication Date Title
JP4886636B2 (ja) インジェクタの取付構造
JP4496226B2 (ja) 内燃機関の排気ガス浄化装置
JP5114219B2 (ja) 内燃機関用の排ガス浄化装置
JP5266439B2 (ja) 排ガス中のＮＯｘの還元機構
JP2009085065A (ja) 排気浄化装置
JP2008274851A (ja) 排気浄化装置
JP2008138654A (ja) 排気ガス浄化装置
JP6558993B2 (ja) 排気浄化装置の連結構造
JP2007009718A (ja) 排気浄化装置
WO2017150582A1 (fr) Dispositif de purification des gaz d'échappement pour moteur à combustion interne
JP5737618B2 (ja) 内燃機関の排ガス浄化装置
WO2017150513A1 (fr) Dispositif de purification des gaz d'échappement pour moteur à combustion interne
WO2017150538A1 (fr) Dispositif de purification des gaz d'échappement pour moteur à combustion interne
KR101150325B1 (ko) 다층촉매담체부가 구비된 차량용 매연저감촉매조립체
JP2012092746A (ja) 排気浄化装置
JP5504719B2 (ja) 自動車用排気浄化装置
JP5188477B2 (ja) 排気浄化装置
US9140172B2 (en) Gas flow distributing flexible coupling
JP7354976B2 (ja) 内燃機関の排気浄化システム
JP7211174B2 (ja) 排気管構造および車両
JP6919478B2 (ja) 内燃機関の排気浄化装置
KR200447315Y1 (ko) 차량용 매연저감촉매조립체
JP2018062882A (ja) 排気浄化システム
JP2021134762A (ja) 排気浄化装置
JP2019065785A (ja) 内燃機関の排気浄化装置

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

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

Ref document number: 17759979

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17759979

Country of ref document: EP

Kind code of ref document: A1