WO2017002397A1 - Exhaust gas purification device - Google Patents
Exhaust gas purification device Download PDFInfo
- Publication number
- WO2017002397A1 WO2017002397A1 PCT/JP2016/056746 JP2016056746W WO2017002397A1 WO 2017002397 A1 WO2017002397 A1 WO 2017002397A1 JP 2016056746 W JP2016056746 W JP 2016056746W WO 2017002397 A1 WO2017002397 A1 WO 2017002397A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- cylindrical
- mixer
- cylindrical portion
- end part
- Prior art date
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
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust 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
- F01N3/24—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
Definitions
- the present invention relates to an exhaust gas purification apparatus in which a mixer for mixing a reducing agent supplied in an exhaust gas passage with exhaust gas is disposed upstream of a catalytic converter in the exhaust gas flow direction.
- An exhaust gas purification apparatus in which a mixer for mixing a reducing agent such as urea water supplied to an exhaust gas passage and an exhaust gas is provided on the upstream side of the NO x catalyst has been conventionally known.
- the mixer of the exhaust gas purifying apparatus disclosed in 1 includes an outer ring, an inner ring disposed coaxially in the outer ring, and a plurality of swirl vanes provided between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring.
- the outer ring is welded to the inner peripheral surface of the exhaust pipe that forms the exhaust gas passage.
- the mixer of the exhaust gas purifying apparatus disclosed in Patent Document 2 is provided with a plurality of fin portions provided on a disk-like plate by cutting and raising at a plurality of locations of the plate and bending of the raised portion, and accompanying the raising and lowering. A plurality of openings are formed, and an outer peripheral portion of the plate is fixed to the pair of exhaust pipes so as to be sandwiched between a pair of exhaust pipes that respectively form exhaust passages.
- Patent Document 1 not only does the reducing agent circulate through the central portion of the mixer without diffusing, but the shape of the mixer is complicated and it takes time and effort to weld, making it difficult to manufacture.
- the outer periphery of the mixer is joined to the inner peripheral surface of the exhaust pipe by welding, it takes time for welding, making it difficult to manufacture, and there is a possibility that foreign matters such as spatter accompanying welding may be mixed in the exhaust pipe. There was a problem that reduction and quality assurance were difficult.
- the fin part is not arrange
- the structure for fixing the mixer to the exhaust pipe is complicated, which makes it difficult to manufacture, and it is difficult to reduce costs and ensure quality.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide an exhaust gas purification device that facilitates cost reduction and quality assurance.
- the present invention provides an exhaust gas purification apparatus in which a mixer for mixing a reducing agent supplied in an exhaust gas passage with exhaust gas is disposed upstream of a catalytic converter in a flow direction of exhaust gas.
- the mixer has a cylindrical portion that forms a part of the exhaust gas passage and a plurality of slit-shaped openings extending along a radial direction of the cylindrical portion, and an outer periphery is continuously provided at one end of the cylindrical portion.
- a cylindrical casing that forms an outer shell of the catalytic converter so that one end of the cylindrical portion is fitted into the upstream end of the casing.
- the mixer is welded to the upstream end of the casing of the catalytic converter and the downstream end of the cylindrical member that guides the exhaust gas to the mixer outside the exhaust gas passage. Does not enter the exhaust gas passage.
- the reducing agent does not come into contact with the welded portion, and durability can be improved as compared with the case where the welded portion is disposed at a position where the reducing portion can come into contact with the reducing agent.
- the upstream end portion of the casing and the downstream end portion of the cylindrical member and the both end portions of the cylindrical portion of the mixer are fitted and overlapped, the strength can be increased by the overlapping portion. Further, there is no part that hinders the flow of exhaust gas around the mixer, and the effective diameter of the mixer can be increased.
- FIG. 1 is a longitudinal sectional plan view of an essential part of an exhaust system of a diesel engine according to a first embodiment.
- FIG. 2 is a longitudinal sectional view of the exhaust gas purifying apparatus.
- First embodiment 3 is a cross-sectional view taken along line 3-3 of FIG.
- First embodiment 4 is a cross-sectional view taken along line 4-4 of FIG.
- FIG. 5 is a longitudinal sectional view of the exhaust gas purification apparatus of the second embodiment.
- FIG. 6 is a longitudinal sectional view of the exhaust gas purifying apparatus of the third embodiment.
- an exhaust system 11 of a diesel engine E is a first catalyst for oxidizing and removing CO and HC in exhaust gas.
- a converter 12, a second catalytic converter 13 disposed on the downstream side of the first catalytic converter 12, and a mixer 14 are provided, and the mixer 14 distributes exhaust gas flowing through an exhaust gas passage 19 included in the exhaust system 11. It is interposed between the first and second secondary catalytic converters 12 and 13 so as to be disposed upstream of the second catalytic converter 13 along the direction 28, and the mixer 14 includes a reducing agent.
- a reducing agent supply device 15 that supplies urea water is connected.
- the second catalytic converter 13 is composed of a honeycomb-structured ceramic 16 supporting a catalyst supported by a cylindrical casing 17 via a mat 18 to convert NO x in exhaust gas. It works to reduce and remove.
- the mixer 14 mixes the reducing agent supplied from the reducing agent supply device 15 in the exhaust gas passage 19 with the exhaust gas and guides it to the second catalytic converter 13 side, and is derived from the first catalytic converter 12.
- the exhaust gas that has been discharged has the first exhaust pipe 20 whose upstream end is connected to the first catalytic converter 12 and the second exhaust pipe 21 that connects the first exhaust pipe 20 and the mixer 14 to each other.
- the first and second exhaust pipes 20, 21 form part of the exhaust gas passage 19.
- the mixer 14 has a cylindrical portion 23 that forms a part of the exhaust gas passage 19, and a plurality of slit-like openings 25 that extend along the radial direction of the cylindrical portion 23. However, it has an end plate portion 24 whose outer periphery is connected to one end portion of the cylindrical portion 23 and is formed into a bottomed cup shape.
- the end plate portion 24 is provided with a projecting portion 24a formed in a tapered shape so as to become smaller in diameter toward the upstream exhaust pipe 20 side, and the opening 25 is formed between them.
- a plurality of blades 24b that radially connect the cylindrical portion 23 and the protrusion 24a are provided.
- the blade 24 b has a blade width W (see FIG. 3) that increases as it goes outward along the radial direction of the cylindrical portion 23, that is, increases as it approaches the cylindrical portion 23. Formed to be. Moreover, torsion of the same direction and the same angle ⁇ is given to the intermediate portion along the radial direction of each blade 24b around the center line L in the width direction of the blade 24b along the circumferential direction of the cylindrical portion 23. Thus, each blade 24b is expanded in the axial direction of the cylindrical portion 23, and the torsion angle ⁇ is set so as to become smaller as it approaches the cylindrical portion 23 and the protruding portion 24a.
- One end portions of the end plate portion 24 and the cylindrical portion 23 having the protrusion 24a and the blade 24b are formed by deep drawing by pressing, and the connecting portions of the end plate portion 24 and the cylindrical portion 23 swell outward. It is formed as a curved part.
- the cylindrical portion 23 of the mixer 14 forms a part of the exhaust gas passage 19, and supplies the reducing agent into the exhaust gas passage 19 upstream of the end plate portion 24 along the exhaust gas flow direction 28.
- a reducing agent supply pipe 27 connected to the reducing agent supply device 15 is provided at an axially intermediate portion of the cylindrical portion 23.
- the cylindrical casing 17 constituting the outline of the second catalytic converter 13 is formed so that one end portion of the cylindrical portion 23 is fitted into the upstream end portion of the casing 17. Further, the downstream end portion of the second exhaust pipe 21 which is a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer 14 and the other end portion of the cylindrical portion 23 are fitted to each other. In this embodiment, the downstream end portion of the second exhaust pipe 21 is fitted to the other end portion of the cylindrical portion 23. That is, the second exhaust pipe 21 has a tapered portion 21a having a diameter that increases toward the mixer 14, and a cylindrical connecting tube portion 21b that is coaxially connected to the large diameter end of the tapered portion 21a. The connecting cylinder portion 21 b that is the downstream end portion of the second exhaust pipe 21 is fitted to the other end portion of the cylindrical portion 23.
- one end of the cylindrical portion 23 is welded to the upstream end of the casing 17 outside the exhaust gas passage 26, and the other end of the cylindrical portion 23 is connected to the second exhaust pipe 21.
- the tube part 21b is welded outside the exhaust gas passage 26.
- the mixer 14 includes a cylindrical portion 23 that forms a part of the exhaust gas passage 19, and a plurality of slit-shaped openings that extend along the radial direction of the cylindrical portion 23.
- a cylindrical shape that has a bottomed cup shape having an end plate portion 24 having an outer periphery continuously provided at one end portion of the cylindrical portion 23 while having a portion 25, and constitutes an outline of the second catalytic converter 13
- a second exhaust gas having a circular cross-sectional shape so as to guide the exhaust gas to the mixer 14 so that one end portion of the cylindrical portion 23 is fitted into the upstream end portion of the casing 17.
- a downstream end portion of the pipe 21 is fitted to the other end portion of the cylindrical portion 23, and the one end portion of the cylindrical portion 23 and the other end portion are connected to the upstream end portion of the casing 17 and the downstream end portion of the cylindrical member 21.
- the end is the exhaust gas passage 1 It is of welded outside.
- the reducing agent does not come into contact with the welded portion, and durability can be improved as compared with the case where the welded portion is disposed at a position where the reducing portion can come into contact with the reducing agent.
- the upstream end portion of the casing 17 and the downstream end portion of the second exhaust pipe 21 and both end portions of the cylindrical portion 23 of the mixer 14 are fitted and overlapped with each other, the strength can be increased by the overlapping portion. it can. Further, there is no portion that hinders the flow of exhaust gas around the mixer 14, and the effective diameter of the mixer 14 can be increased.
- the end plate portion 24 and the one end portion of the cylindrical portion 23 of the mixer 14 are formed by deep drawing by pressing, so that they can be formed with high accuracy, and the casing 17 at one end portion of the cylindrical portion 23 can be formed. Since the connecting portion of the end plate portion 24 and the cylindrical portion 23 is formed as a curved portion that swells outward, the exhaust gas and the reducing agent can be efficiently stirred in the mixer 14. Can do.
- the exhaust gas is guided to the mixer 14 via the first exhaust pipe 20 and the second exhaust pipe 31, and a part of each of the first exhaust pipe 20, the third exhaust pipe 34 and the mixer 14 is provided.
- the mixer 14 is arranged upstream of the second catalytic converter 13 along the flow direction 33 of the exhaust gas flowing through the formed exhaust gas passage 32.
- the cylindrical casing 17 constituting the outline of the second catalytic converter 13 is formed so that one end portion of the cylindrical portion 23 of the mixer 14 is fitted into the upstream end portion of the casing 17. Further, the downstream end portion of the third exhaust pipe 34, which is a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer 14, and the other end portion of the cylindrical portion 23 are fitted to each other. In this embodiment, the other end portion of the cylindrical portion 23 is fitted to the downstream end portion of the third exhaust pipe 34. That is, the third exhaust pipe 34 has a tapered portion 34a having a diameter that increases toward the mixer 14, and a cylindrical connecting tube portion 34b that is coaxially connected to the large diameter end of the tapered portion 34a. The other end portion of the cylindrical portion 23 is fitted into the connecting tube portion 34b which is the downstream end portion of the second exhaust pipe 3.
- one end of the cylindrical portion 23 is welded to the upstream end of the casing 17 outside the exhaust gas passage 32, and the other end of the cylindrical portion 23 is connected to the third exhaust pipe 34.
- the tube 34b is welded outside the exhaust gas passage 32.
- a third embodiment of the present invention will be described with reference to FIG. 6, but the parts corresponding to the first and second embodiments are only given the same reference numerals and shown in detail. The detailed explanation is omitted.
- Exhaust gas is guided to the mixer 14 via the first exhaust pipe 20, the second exhaust pipe 21, and the first catalytic converter 12, and the first exhaust pipe 20, the second exhaust pipe 21,
- the mixer 14 is disposed upstream of the second catalytic converter 13 along the flow direction 37 of the exhaust gas flowing through the exhaust gas passage 36 partially formed by the first catalytic converter 12 and the mixer 14. .
- the first catalytic converter 12 includes a honeycomb-structured ceramic 38 supporting a catalyst supported by a cylindrical casing 39 via a mat 40, and functions to oxidize and remove CO and HC in exhaust gas.
- the cylindrical casing 17 constituting the outline of the second catalytic converter 13 is formed so that one end portion of the cylindrical portion 23 of the mixer 14 is fitted into the upstream end portion of the casing 17.
- the casing 39 of the first catalytic converter 12 is formed as a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer 14, and the downstream end of the casing 39 and the cylindrical portion 23.
- the other end portions of the cylindrical portions 23 are fitted to each other.
- the downstream end portion of the casing 39 is fitted to the other end portion of the cylindrical portion 23.
- one end of the cylindrical portion 23 is welded to the upstream end of the casing 17 outside the exhaust gas passage 36, and the other end of the cylindrical portion 23 is connected to the downstream end of the casing 39. Welding is performed outside the exhaust gas passage 36.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
An exhaust gas purification device for which a mixer that mixes exhaust gas with a reducing agent supplied to the interior of an exhaust gas passage is arranged upstream from a catalytic converter in the direction in which the exhaust gas flows, wherein the mixer (14) is formed in the shape of a bottomed cup having a cylindrical portion (23) and an end plate portion (24) which has multiple slit-shaped openings (25) extending in the radial direction of the cylindrical portion, and the outer periphery of which is connected to one end part of the cylindrical portion. In addition, a cylindrical casing (17) forming the outer contour of the catalytic converter (13) is formed so as to fit together with one end part of the cylindrical portion inside the upstream end part of the casing, the other end part of the cylindrical portion and the downstream end part of a cylindrical member (21), the horizontal cross-sectional shape of which is formed in a circular shape so as to guide exhaust gas to the mixer, are fitted to each other, and the one end part and the other end part of the cylindrical portion are welded respectively to the upstream end part of the casing and the downstream end part of the cylindrical member, on the outside of the exhaust gas passage (19). Thus, it is easy to reduce the cost and maintain quality.
Description
本発明は、排ガス通路内に供給された還元剤を排ガスと混合するミキサーが、排ガスの流通方向で触媒コンバータよりも上流側に配設される排ガス浄化装置に関する。
The present invention relates to an exhaust gas purification apparatus in which a mixer for mixing a reducing agent supplied in an exhaust gas passage with exhaust gas is disposed upstream of a catalytic converter in the exhaust gas flow direction.
NOX 触媒の上流側に、排ガス通路に供給された尿素水等の還元剤と、排ガスとを混合させるためのミキサーが設けられるようにした排ガス浄化装置が、従来から知られており、特許文献1で開示される排ガス浄化装置のミキサーは、外側リングと、その外側リング内に同軸に配置される内側リングと、外側リングの内周面および内側リングの外周面間に設けられる複数の旋回翼とを備えるように構成され、排ガス通路を形成する排気管の内周面に前記外側リングが溶接されている。また特許文献2で開示される排ガス浄化装置のミキサーは、円盤状のプレートに、そのプレートの複数箇所での切り起こしならびに切り起こし部分の折り曲げによって複数のフィン部が設けられるとともに、切り起こしに伴う複数の開口部が形成されて成り、排気通路をそれぞれ形成する一対の排気管間に挟まれるようにして前記プレートの外周部が一対の前記排気管に固定されている。
An exhaust gas purification apparatus in which a mixer for mixing a reducing agent such as urea water supplied to an exhaust gas passage and an exhaust gas is provided on the upstream side of the NO x catalyst has been conventionally known. The mixer of the exhaust gas purifying apparatus disclosed in 1 includes an outer ring, an inner ring disposed coaxially in the outer ring, and a plurality of swirl vanes provided between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. The outer ring is welded to the inner peripheral surface of the exhaust pipe that forms the exhaust gas passage. In addition, the mixer of the exhaust gas purifying apparatus disclosed in Patent Document 2 is provided with a plurality of fin portions provided on a disk-like plate by cutting and raising at a plurality of locations of the plate and bending of the raised portion, and accompanying the raising and lowering. A plurality of openings are formed, and an outer peripheral portion of the plate is fixed to the pair of exhaust pipes so as to be sandwiched between a pair of exhaust pipes that respectively form exhaust passages.
ところが上記特許文献1で開示されたものでは、ミキサーの中央部を還元剤が拡散することなくそのまま流通してしまうだけでなく、ミキサーの形状が複雑であって溶接の手間がかかって製造が難しく、しかも排気管の内周面にミキサーの外周を溶接によって結合しているので溶接の手間がかかって製造が難しくなるとともに溶接に伴うスパッタ等の異物が排気管内に混入する虞があり、コストの低減および品質の確保が難しいという課題があった。
However, in the one disclosed in Patent Document 1, not only does the reducing agent circulate through the central portion of the mixer without diffusing, but the shape of the mixer is complicated and it takes time and effort to weld, making it difficult to manufacture. In addition, since the outer periphery of the mixer is joined to the inner peripheral surface of the exhaust pipe by welding, it takes time for welding, making it difficult to manufacture, and there is a possibility that foreign matters such as spatter accompanying welding may be mixed in the exhaust pipe. There was a problem that reduction and quality assurance were difficult.
また上記特許文献2で開示されたものでは、プレートの外周部にはフィン部が配設されておらず、プレートの外周部が排気抵抗になってしまう。またミキサーを排気管に固定する構造が複雑であり、製造が難しく、コストの低減および品質の確保が難しいという課題があった。
Moreover, in what was disclosed by the said patent document 2, the fin part is not arrange | positioned in the outer peripheral part of a plate, but the outer peripheral part of a plate will become exhaustion resistance. In addition, the structure for fixing the mixer to the exhaust pipe is complicated, which makes it difficult to manufacture, and it is difficult to reduce costs and ensure quality.
本発明は、かかる事情に鑑みてなされたものであり、コストの低減および品質の確保を容易とした排ガス浄化装置を提供することを目的とする。
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an exhaust gas purification device that facilitates cost reduction and quality assurance.
上記目的を達成するために、本発明は、排ガス通路内に供給された還元剤を排ガスと混合するミキサーが、排ガスの流通方向で触媒コンバータよりも上流側に配設される排ガス浄化装置において、前記ミキサーが、前記排ガス通路の一部を形成する円筒部と、該円筒部の半径方向に沿って延びる複数のスリット状の開口部を有しつつ前記円筒部の一端部に外周が連設される端板部とを有して有底カップ状に形成され、前記触媒コンバータの外郭を構成する円筒状のケーシングが、該ケーシングの上流端部内に前記円筒部の一端部を嵌合させるように形成され、排ガスを前記ミキサーに導くようにして横断面形状を円形とした筒部材の下流端部と、前記円筒部の他端部とが相互に嵌合され、前記ケーシングの前記上流端部および前記筒部材の下流端部に、前記円筒部の前記一端部および前記他端部が前記排ガス通路の外側で溶接されることを特徴とする。
In order to achieve the above object, the present invention provides an exhaust gas purification apparatus in which a mixer for mixing a reducing agent supplied in an exhaust gas passage with exhaust gas is disposed upstream of a catalytic converter in a flow direction of exhaust gas. The mixer has a cylindrical portion that forms a part of the exhaust gas passage and a plurality of slit-shaped openings extending along a radial direction of the cylindrical portion, and an outer periphery is continuously provided at one end of the cylindrical portion. And a cylindrical casing that forms an outer shell of the catalytic converter so that one end of the cylindrical portion is fitted into the upstream end of the casing. And a downstream end of a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer and the other end of the cylindrical portion are fitted to each other, and the upstream end of the casing and Of the tubular member The upstream end portion, wherein said one end and said other end of the cylindrical portion is welded on the outside of the exhaust gas channel.
本発明の上記特徴によれば、ミキサーが、触媒コンバータのケーシングの上流端部と、ミキサーに排ガスを導く筒部材の下流端部とに、排ガス通路の外側で溶接されるので、スパッタ等の異物が排ガス通路内に混入することがない。しかも還元剤が溶接部に接触することがなく、溶接部が還元剤に接触し得る位置に配置されるものに比べると耐久性を高め得ることができる。またケーシングの上流端部および筒部材の下流端部と、ミキサーの円筒部の両端部とは嵌合して重なることになるので、その重なり部によって強度を高めることができる。またミキサーの周囲に排ガスの流れを阻害する部分がなく、ミキサーの有効径を大きくすることができる。
According to the above feature of the present invention, the mixer is welded to the upstream end of the casing of the catalytic converter and the downstream end of the cylindrical member that guides the exhaust gas to the mixer outside the exhaust gas passage. Does not enter the exhaust gas passage. In addition, the reducing agent does not come into contact with the welded portion, and durability can be improved as compared with the case where the welded portion is disposed at a position where the reducing portion can come into contact with the reducing agent. Further, since the upstream end portion of the casing and the downstream end portion of the cylindrical member and the both end portions of the cylindrical portion of the mixer are fitted and overlapped, the strength can be increased by the overlapping portion. Further, there is no part that hinders the flow of exhaust gas around the mixer, and the effective diameter of the mixer can be increased.
13・・・触媒コンバータ
14・・・ミキサー
17・・・ケーシング
19,32,36・・・排ガス通路
21・・・筒部材である第2の排気管
23・・・円筒部
24・・・端板部
25・・・開口部
28,33,37・・・流通方向
34・・・筒部材である第3の排気管
39・・・筒部材であるケーシング DESCRIPTION OFSYMBOLS 13 ... Catalytic converter 14 ... Mixer 17 ... Casing 19, 32, 36 ... Exhaust gas passage 21 ... 2nd exhaust pipe 23 which is a cylindrical member ... Cylindrical part 24 ... End Plate part 25... Openings 28, 33, 37... Flow direction 34... Third exhaust pipe 39 that is a cylindrical member.
14・・・ミキサー
17・・・ケーシング
19,32,36・・・排ガス通路
21・・・筒部材である第2の排気管
23・・・円筒部
24・・・端板部
25・・・開口部
28,33,37・・・流通方向
34・・・筒部材である第3の排気管
39・・・筒部材であるケーシング DESCRIPTION OF
以下、本発明の実施の形態を、添付の図面を参照しながら説明する。
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
本発明の第1の実施の形態について図1~図4を参照しながら説明すると、先ず図1において、ディーゼルエンジンEの排気系11は、排ガス中のCOおよびHCを酸化除去する第1の触媒コンバータ12と、第1の触媒コンバータ12よりも下流側に配置される第2の触媒コンバータ13と、ミキサー14とを備え、ミキサー14は、排気系11が有する排ガス通路19を流通する排ガスの流通方向28に沿って第2の触媒コンバータ13よりも上流側に配設されるようにして第1および第2の二次触媒コンバータ12,13間に介設され、前記ミキサー14には、還元剤たとえば尿素水を供給する還元剤供給装置15が接続される。
The first embodiment of the present invention will be described with reference to FIGS. 1 to 4. First, in FIG. 1, an exhaust system 11 of a diesel engine E is a first catalyst for oxidizing and removing CO and HC in exhaust gas. A converter 12, a second catalytic converter 13 disposed on the downstream side of the first catalytic converter 12, and a mixer 14 are provided, and the mixer 14 distributes exhaust gas flowing through an exhaust gas passage 19 included in the exhaust system 11. It is interposed between the first and second secondary catalytic converters 12 and 13 so as to be disposed upstream of the second catalytic converter 13 along the direction 28, and the mixer 14 includes a reducing agent. For example, a reducing agent supply device 15 that supplies urea water is connected.
図2を併せて参照して、第2の触媒コンバータ13は、触媒を担持したハニカム構造のセラミックス16が、円筒状のケーシング17にマット18を介して支持されて成り、排ガス中のNOX を還元除去する働きをする。
Referring also to FIG. 2, the second catalytic converter 13 is composed of a honeycomb-structured ceramic 16 supporting a catalyst supported by a cylindrical casing 17 via a mat 18 to convert NO x in exhaust gas. It works to reduce and remove.
前記ミキサー14は、前記排ガス通路19内で前記還元剤供給装置15から供給される還元剤を排ガスと混合して第2の触媒コンバータ13側に導くものであり、第1の触媒コンバータ12から導出された排ガスは、上流端が第1の触媒コンバータ12に接続される第1の排気管20と、第1の排気管20および前記ミキサー14間を結ぶ第2の排気管21とを介して前記ミキサー14に導かれ、第1および第2の排気管20,21は前記排ガス通路19の一部をそれぞれ形成する。
The mixer 14 mixes the reducing agent supplied from the reducing agent supply device 15 in the exhaust gas passage 19 with the exhaust gas and guides it to the second catalytic converter 13 side, and is derived from the first catalytic converter 12. The exhaust gas that has been discharged has the first exhaust pipe 20 whose upstream end is connected to the first catalytic converter 12 and the second exhaust pipe 21 that connects the first exhaust pipe 20 and the mixer 14 to each other. Guided to the mixer 14, the first and second exhaust pipes 20, 21 form part of the exhaust gas passage 19.
図3を併せて参照して、前記ミキサー14は、前記排ガス通路19の一部を形成する円筒部23と、該円筒部23の半径方向に沿って延びる複数のスリット状の開口部25を有しつつ前記円筒部23の一端部に外周が連設される端板部24とを有して有底カップ状に形成される。
Referring also to FIG. 3, the mixer 14 has a cylindrical portion 23 that forms a part of the exhaust gas passage 19, and a plurality of slit-like openings 25 that extend along the radial direction of the cylindrical portion 23. However, it has an end plate portion 24 whose outer periphery is connected to one end portion of the cylindrical portion 23 and is formed into a bottomed cup shape.
前記端板部24には、前記上流側排気管20側に向かうにつれて小径となるようにしてテーパ状に形成される突部24aが設けられるとともに、前記開口部25を相互間に形成するようにして前記円筒部23および前記突部24a間を放射状に結ぶ複数のブレード24bが設けられる。
The end plate portion 24 is provided with a projecting portion 24a formed in a tapered shape so as to become smaller in diameter toward the upstream exhaust pipe 20 side, and the opening 25 is formed between them. A plurality of blades 24b that radially connect the cylindrical portion 23 and the protrusion 24a are provided.
図4を併せて参照して、前記ブレード24bは、そのブレード幅W(図3参照)が前記円筒部23の半径方向に沿う外方に向かうにつれて大きく、すなわち前記円筒部23に近接するにつれて大きくなるように形成される。しかも各ブレード24bの前記半径方向に沿う中間部には、前記円筒部23の周方向に沿う前記ブレード24bの幅方向中心線Lまわりで同一方向、同一角度θの捩じりが付与されており、それにより各ブレード24bは前記円筒部23の軸方向に広げられ、前記捩じり角度θは前記円筒部23および前記突部24aに近接するにつれて小さくなるように設定される。
Referring also to FIG. 4, the blade 24 b has a blade width W (see FIG. 3) that increases as it goes outward along the radial direction of the cylindrical portion 23, that is, increases as it approaches the cylindrical portion 23. Formed to be. Moreover, torsion of the same direction and the same angle θ is given to the intermediate portion along the radial direction of each blade 24b around the center line L in the width direction of the blade 24b along the circumferential direction of the cylindrical portion 23. Thus, each blade 24b is expanded in the axial direction of the cylindrical portion 23, and the torsion angle θ is set so as to become smaller as it approaches the cylindrical portion 23 and the protruding portion 24a.
前記突部24aおよび前記ブレード24bを有する前記端板部24および前記円筒部23の一端部は、プレスによる深絞り加工によって形成され、端板部24および円筒部23の連設部は外側に膨らんだ湾曲部として形成される。
One end portions of the end plate portion 24 and the cylindrical portion 23 having the protrusion 24a and the blade 24b are formed by deep drawing by pressing, and the connecting portions of the end plate portion 24 and the cylindrical portion 23 swell outward. It is formed as a curved part.
ところで前記ミキサー14の前記円筒部23は前記排ガス通路19の一部を形成するものであり、前記端板部24よりも排ガスの流通方向28に沿う上流側で排ガス通路19内に還元剤を供給するために、前記円筒部23の軸方向中間部には、前記還元剤供給装置15に接続される還元剤供給管27が設けられる。
By the way, the cylindrical portion 23 of the mixer 14 forms a part of the exhaust gas passage 19, and supplies the reducing agent into the exhaust gas passage 19 upstream of the end plate portion 24 along the exhaust gas flow direction 28. In order to do so, a reducing agent supply pipe 27 connected to the reducing agent supply device 15 is provided at an axially intermediate portion of the cylindrical portion 23.
第2の触媒コンバータ13の外郭を構成する円筒状の前記ケーシング17は、該ケーシング17の上流端部内に前記円筒部23の一端部を嵌合させるように形成される。また前記ミキサー14に排ガスを導くようにして横断面形状を円形とした筒部材である第2の排気管21の下流端部と、前記円筒部23の他端部とは相互に嵌合されるものであり、この実施の形態では、前記円筒部23の他端部に第2の排気管21の下流端部が嵌合される。すなわち第2の排気管21は、前記ミキサー14側に向かうにつれて大径となるテーパ部21aと、そのテーパ部21aの大径端に同軸に連なる円筒状の接続筒部21bとを有しており、第2の排気管21の下流端部である接続筒部21bが前記円筒部23の他端部に嵌合される。
The cylindrical casing 17 constituting the outline of the second catalytic converter 13 is formed so that one end portion of the cylindrical portion 23 is fitted into the upstream end portion of the casing 17. Further, the downstream end portion of the second exhaust pipe 21 which is a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer 14 and the other end portion of the cylindrical portion 23 are fitted to each other. In this embodiment, the downstream end portion of the second exhaust pipe 21 is fitted to the other end portion of the cylindrical portion 23. That is, the second exhaust pipe 21 has a tapered portion 21a having a diameter that increases toward the mixer 14, and a cylindrical connecting tube portion 21b that is coaxially connected to the large diameter end of the tapered portion 21a. The connecting cylinder portion 21 b that is the downstream end portion of the second exhaust pipe 21 is fitted to the other end portion of the cylindrical portion 23.
しかも前記ケーシング17の前記上流端部に、前記円筒部23の前記一端部が前記排ガス通路26の外側で溶接され、また前記円筒部23の他端部が、前記第2の排気管21の接続筒部21bに前記排ガス通路26の外側で溶接される。
Moreover, one end of the cylindrical portion 23 is welded to the upstream end of the casing 17 outside the exhaust gas passage 26, and the other end of the cylindrical portion 23 is connected to the second exhaust pipe 21. The tube part 21b is welded outside the exhaust gas passage 26.
次にこの第1の実施の形態の作用について説明すると、ミキサー14が、排ガス通路19の一部を形成する円筒部23と、該円筒部23の半径方向に沿って延びる複数のスリット状の開口部25を有しつつ前記円筒部23の一端部に外周が連設される端板部24とを有して有底カップ状に形成され、第2の触媒コンバータ13の外郭を構成する円筒状のケーシング17が、該ケーシング17の上流端部内に前記円筒部23の一端部を嵌合させるように形成され、排ガスを前記ミキサー14に導くようにして横断面形状を円形とした第2の排気管21の下流端部が前記円筒部23の他端部に嵌合され、前記ケーシング17の前記上流端部および前記筒部材21の下流端部に、前記円筒部23の前記一端部および前記他端部が前記排ガス通路19の外側で溶接される。
Next, the operation of the first embodiment will be described. The mixer 14 includes a cylindrical portion 23 that forms a part of the exhaust gas passage 19, and a plurality of slit-shaped openings that extend along the radial direction of the cylindrical portion 23. A cylindrical shape that has a bottomed cup shape having an end plate portion 24 having an outer periphery continuously provided at one end portion of the cylindrical portion 23 while having a portion 25, and constitutes an outline of the second catalytic converter 13 A second exhaust gas having a circular cross-sectional shape so as to guide the exhaust gas to the mixer 14 so that one end portion of the cylindrical portion 23 is fitted into the upstream end portion of the casing 17. A downstream end portion of the pipe 21 is fitted to the other end portion of the cylindrical portion 23, and the one end portion of the cylindrical portion 23 and the other end portion are connected to the upstream end portion of the casing 17 and the downstream end portion of the cylindrical member 21. The end is the exhaust gas passage 1 It is of welded outside.
したがってスパッタ等の異物が排ガス通路19内に混入することがない。しかも還元剤が溶接部に接触することがなく、溶接部が還元剤に接触し得る位置に配置されるものに比べると耐久性を高め得ることができる。またケーシング17の上流端部および第2の排気管21の下流端部と、ミキサー14の円筒部23の両端部とは嵌合して重なることになるので、その重なり部によって強度を高めることができる。またミキサー14の周囲に排ガスの流れを阻害する部分がなく、ミキサー14の有効径を大きくすることができる。
Therefore, foreign matter such as spatter does not enter the exhaust gas passage 19. In addition, the reducing agent does not come into contact with the welded portion, and durability can be improved as compared with the case where the welded portion is disposed at a position where the reducing portion can come into contact with the reducing agent. Further, since the upstream end portion of the casing 17 and the downstream end portion of the second exhaust pipe 21 and both end portions of the cylindrical portion 23 of the mixer 14 are fitted and overlapped with each other, the strength can be increased by the overlapping portion. it can. Further, there is no portion that hinders the flow of exhaust gas around the mixer 14, and the effective diameter of the mixer 14 can be increased.
しかも前記ミキサー14の前記端板部24および前記円筒部23の一端部は、プレスによる深絞り加工によって形成されるので、精度よく形成することができ、前記円筒部23の一端部の前記ケーシング17に対する嵌合精度を高めることができ、また端板部24および円筒部23の連設部は外側に膨らんだ湾曲部として形成されるので、ミキサー14内で排ガスおよび還元剤を効率よく攪拌することができる。
In addition, the end plate portion 24 and the one end portion of the cylindrical portion 23 of the mixer 14 are formed by deep drawing by pressing, so that they can be formed with high accuracy, and the casing 17 at one end portion of the cylindrical portion 23 can be formed. Since the connecting portion of the end plate portion 24 and the cylindrical portion 23 is formed as a curved portion that swells outward, the exhaust gas and the reducing agent can be efficiently stirred in the mixer 14. Can do.
本発明の第2の実施の形態について図5を参照しながら説明するが、上記第1の実施の形態に対応する部分には同一の参照符号を付して図示するのみとし、詳細な説明は省略する。
The second embodiment of the present invention will be described with reference to FIG. 5, but the parts corresponding to the first embodiment are only shown with the same reference numerals, and the detailed description is as follows. Omitted.
ミキサー14には、第1の排気管20および第2の排気管31を介して排ガスが導かれるものであり、第1の排気管20、第3の排気管34およびミキサー14でそれぞれ一部が形成される排ガス通路32を流通する排ガスの流通方向33に沿って第2の触媒コンバータ13よりも上流側に前記ミキサー14が配設される。
The exhaust gas is guided to the mixer 14 via the first exhaust pipe 20 and the second exhaust pipe 31, and a part of each of the first exhaust pipe 20, the third exhaust pipe 34 and the mixer 14 is provided. The mixer 14 is arranged upstream of the second catalytic converter 13 along the flow direction 33 of the exhaust gas flowing through the formed exhaust gas passage 32.
第2の触媒コンバータ13の外郭を構成する円筒状の前記ケーシング17は、該ケーシング17の上流端部内に、前記ミキサー14における円筒部23の一端部を嵌合させるように形成される。また前記ミキサー14に排ガスを導くようにして横断面形状を円形とした筒部材である第3の排気管34の下流端部と、前記円筒部23の他端部とは相互に嵌合されるものであり、この実施の形態では、前記円筒部23の他端部が第3の排気管34の下流端部に嵌合される。すなわち第3の排気管34は、前記ミキサー14側に向かうにつれて大径となるテーパ部34aと、そのテーパ部34aの大径端に同軸に連なる円筒状の接続筒部34bとを有しており、第2の排気管3の下流端部である接続筒部34bに前記円筒部23の他端部が嵌合される。
The cylindrical casing 17 constituting the outline of the second catalytic converter 13 is formed so that one end portion of the cylindrical portion 23 of the mixer 14 is fitted into the upstream end portion of the casing 17. Further, the downstream end portion of the third exhaust pipe 34, which is a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer 14, and the other end portion of the cylindrical portion 23 are fitted to each other. In this embodiment, the other end portion of the cylindrical portion 23 is fitted to the downstream end portion of the third exhaust pipe 34. That is, the third exhaust pipe 34 has a tapered portion 34a having a diameter that increases toward the mixer 14, and a cylindrical connecting tube portion 34b that is coaxially connected to the large diameter end of the tapered portion 34a. The other end portion of the cylindrical portion 23 is fitted into the connecting tube portion 34b which is the downstream end portion of the second exhaust pipe 3.
しかも前記ケーシング17の前記上流端部に、前記円筒部23の前記一端部が前記排ガス通路32の外側で溶接され、また前記円筒部23の他端部が、前記第3の排気管34の接続筒部34bに前記排ガス通路32の外側で溶接される。
Moreover, one end of the cylindrical portion 23 is welded to the upstream end of the casing 17 outside the exhaust gas passage 32, and the other end of the cylindrical portion 23 is connected to the third exhaust pipe 34. The tube 34b is welded outside the exhaust gas passage 32.
この第2の実施の形態によっても上記第1の実施の形態と同様の効果を奏することができる。
The same effect as that of the first embodiment can be obtained by the second embodiment.
本発明の第3の実施の形態について図6を参照しながら説明するが、上記第1および第2の実施の形態に対応する部分には同一の参照符号を付して図示するのみとし、詳細な説明は省略する。
A third embodiment of the present invention will be described with reference to FIG. 6, but the parts corresponding to the first and second embodiments are only given the same reference numerals and shown in detail. The detailed explanation is omitted.
ミキサー14には、第1の排気管20、第2の排気管21および第1の触媒コンバータ12を介して排ガスが導かれるものであり、第1の排気管20、第2の排気管21、第1の触媒コンバータ12およびミキサー14でそれぞれ一部が形成される排ガス通路36を流通する排ガスの流通方向37に沿って第2の触媒コンバータ13よりも上流側に前記ミキサー14が配設される。
Exhaust gas is guided to the mixer 14 via the first exhaust pipe 20, the second exhaust pipe 21, and the first catalytic converter 12, and the first exhaust pipe 20, the second exhaust pipe 21, The mixer 14 is disposed upstream of the second catalytic converter 13 along the flow direction 37 of the exhaust gas flowing through the exhaust gas passage 36 partially formed by the first catalytic converter 12 and the mixer 14. .
第1の触媒コンバータ12は、触媒を担持したハニカム構造のセラミックス38が、円筒状のケーシング39にマット40を介して支持されて成り、排ガス中のCOおよびHCを酸化除去する働きをする。
The first catalytic converter 12 includes a honeycomb-structured ceramic 38 supporting a catalyst supported by a cylindrical casing 39 via a mat 40, and functions to oxidize and remove CO and HC in exhaust gas.
第2の触媒コンバータ13の外郭を構成する円筒状の前記ケーシング17は、該ケーシング17の上流端部内に、前記ミキサー14における円筒部23の一端部を嵌合させるように形成される。また第1の触媒コンバータ12のケーシング39は、前記ミキサー14に排ガスを導くようにして横断面形状を円形とした筒部材として形成されており、このケーシング39の下流端部と、前記円筒部23の他端部とは相互に嵌合されるものであり、この実施の形態では、前記ケーシング39の下流端部前記円筒部23の他端部に嵌合される。
The cylindrical casing 17 constituting the outline of the second catalytic converter 13 is formed so that one end portion of the cylindrical portion 23 of the mixer 14 is fitted into the upstream end portion of the casing 17. The casing 39 of the first catalytic converter 12 is formed as a cylindrical member having a circular cross section so as to guide the exhaust gas to the mixer 14, and the downstream end of the casing 39 and the cylindrical portion 23. The other end portions of the cylindrical portions 23 are fitted to each other. In this embodiment, the downstream end portion of the casing 39 is fitted to the other end portion of the cylindrical portion 23.
しかも前記ケーシング17の前記上流端部に、前記円筒部23の前記一端部が前記排ガス通路36の外側で溶接され、また前記円筒部23の他端部が、前記ケーシング39の下流端部に前記排ガス通路36の外側で溶接される。
In addition, one end of the cylindrical portion 23 is welded to the upstream end of the casing 17 outside the exhaust gas passage 36, and the other end of the cylindrical portion 23 is connected to the downstream end of the casing 39. Welding is performed outside the exhaust gas passage 36.
この第3の実施の形態によっても上記第1および第2の実施の形態と同様の効果を奏することができる。
Also in the third embodiment, the same effects as in the first and second embodiments can be obtained.
以上、本発明の実施の形態について説明したが、本発明は上記実施の形態に限定されるものではなく、その要旨を逸脱することなく種々の設計変更を行うことが可能である。
The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist of the present invention.
Claims (1)
- 排ガス通路(19,32,36)内に供給された還元剤を排ガスと混合するミキサー(14)が、排ガスの流通方向(28,33,37)で触媒コンバータ(13)よりも上流側に配設される排ガス浄化装置において、前記ミキサー(14)が、前記排ガス通路(19,32,36)の一部を形成する円筒部(23)と、該円筒部(23)の半径方向に沿って延びる複数のスリット状の開口部(25)を有しつつ前記円筒部(23)の一端部に外周が連設される端板部(24)とを有して有底カップ状に形成され、前記触媒コンバータ(13)の外郭を構成する円筒状のケーシング(17)が、該ケーシング(17)の上流端部内に前記円筒部(23)の一端部を嵌合させるように形成され、排ガスを前記ミキサー(14)に導くようにして横断面形状を円形とした筒部材(21,34,39)の下流端部と、前記円筒部(23)の他端部とが相互に嵌合され、前記ケーシング(17)の前記上流端部および前記筒部材(21,34,39)の下流端部に、前記円筒部(23)の前記一端部および前記他端部が前記排ガス通路(19,32,36)の外側で溶接されることを特徴とする排ガス浄化装置。 A mixer (14) for mixing the reducing agent supplied into the exhaust gas passages (19, 32, 36) with the exhaust gas is disposed upstream of the catalytic converter (13) in the exhaust gas flow direction (28, 33, 37). In the exhaust gas purification apparatus provided, the mixer (14) includes a cylindrical portion (23) that forms a part of the exhaust gas passage (19, 32, 36), and a radial direction of the cylindrical portion (23). It has a plurality of slit-shaped openings (25) extending, and has an end plate part (24) whose outer periphery is connected to one end part of the cylindrical part (23), and is formed in a bottomed cup shape, A cylindrical casing (17) constituting the outer shell of the catalytic converter (13) is formed so that one end portion of the cylindrical portion (23) is fitted into the upstream end portion of the casing (17), and exhaust gas is discharged. Lead to the mixer (14) The downstream end of the cylindrical member (21, 34, 39) having a circular cross-sectional shape and the other end of the cylindrical portion (23) are fitted to each other, and the upstream end of the casing (17) And the one end part and the other end part of the cylindrical part (23) are welded to the downstream end part of the cylindrical member (21, 34, 39) outside the exhaust gas passage (19, 32, 36). An exhaust gas purification device characterized by the above.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-131603 | 2015-06-30 | ||
JP2015131603A JP6215873B2 (en) | 2015-06-30 | 2015-06-30 | Exhaust gas purification device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017002397A1 true WO2017002397A1 (en) | 2017-01-05 |
Family
ID=57607998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/056746 WO2017002397A1 (en) | 2015-06-30 | 2016-03-04 | Exhaust gas purification device |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP6215873B2 (en) |
WO (1) | WO2017002397A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003184544A (en) * | 2001-12-20 | 2003-07-03 | Toyota Motor Corp | Exhaust emissions control system for internal combustion engine |
WO2008111254A1 (en) * | 2007-03-12 | 2008-09-18 | Bosch Corporation | Exhaust gas purification apparatus for internal combustion engine |
JP2009024628A (en) * | 2007-07-20 | 2009-02-05 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control system of internal combustion engine |
JP2011157825A (en) * | 2010-01-29 | 2011-08-18 | Hino Motors Ltd | Exhaust emission control device |
JP2012127311A (en) * | 2010-12-17 | 2012-07-05 | Ud Trucks Corp | Diffuser for reducing agent |
JP2014185592A (en) * | 2013-03-25 | 2014-10-02 | Honda Motor Co Ltd | Exhaust device of engine |
JP2014196694A (en) * | 2013-03-29 | 2014-10-16 | 株式会社日本自動車部品総合研究所 | Dispersion plate |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011111927A (en) * | 2009-11-25 | 2011-06-09 | Honda Motor Co Ltd | Exhaust emission control device of internal combustion engine |
JP2011252498A (en) * | 2011-07-24 | 2011-12-15 | Bosch Corp | Exhaust purifying apparatus of internal combustion engine, mixer plate, and mixer unit, and press molding apparatus for mixer plate |
-
2015
- 2015-06-30 JP JP2015131603A patent/JP6215873B2/en active Active
-
2016
- 2016-03-04 WO PCT/JP2016/056746 patent/WO2017002397A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003184544A (en) * | 2001-12-20 | 2003-07-03 | Toyota Motor Corp | Exhaust emissions control system for internal combustion engine |
WO2008111254A1 (en) * | 2007-03-12 | 2008-09-18 | Bosch Corporation | Exhaust gas purification apparatus for internal combustion engine |
JP2009024628A (en) * | 2007-07-20 | 2009-02-05 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control system of internal combustion engine |
JP2011157825A (en) * | 2010-01-29 | 2011-08-18 | Hino Motors Ltd | Exhaust emission control device |
JP2012127311A (en) * | 2010-12-17 | 2012-07-05 | Ud Trucks Corp | Diffuser for reducing agent |
JP2014185592A (en) * | 2013-03-25 | 2014-10-02 | Honda Motor Co Ltd | Exhaust device of engine |
JP2014196694A (en) * | 2013-03-29 | 2014-10-16 | 株式会社日本自動車部品総合研究所 | Dispersion plate |
Also Published As
Publication number | Publication date |
---|---|
JP6215873B2 (en) | 2017-10-18 |
JP2017014975A (en) | 2017-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9341096B2 (en) | Exhaust gas treatment device for use near an engine and motor vehicle having the device | |
JP4703260B2 (en) | Engine exhaust purification device and exhaust pipe structure used therefor | |
US8763375B2 (en) | Exhaust gas cleaning device, exhaust system, removal method | |
JP4810511B2 (en) | Waste heat recovery device for internal combustion engine | |
WO2014097815A1 (en) | Exhaust gas purification device | |
US10024211B2 (en) | Mounting support for heat shield reinforcement | |
US9410471B2 (en) | Exhaust system component | |
JP6125450B2 (en) | Exhaust purification equipment mixer | |
CN111828140A (en) | Mixing device | |
JP4948976B2 (en) | Connection structure of exhaust system member and insertion member | |
JP6730376B2 (en) | Silencer | |
WO2017002397A1 (en) | Exhaust gas purification device | |
CN111412049B (en) | Mixer for an exhaust system of an internal combustion engine | |
JP5352569B2 (en) | Catalytic converter | |
US11377990B2 (en) | Exhaust pipe | |
CN101418714A (en) | Sheet-metal component, in particular for an exhaust gas system | |
JP2008267225A (en) | Exhaust emission control device | |
JP6090632B2 (en) | Exhaust purification equipment mixer | |
JP2007092564A (en) | Exhaust structure for vehicle | |
JP6494731B2 (en) | Exhaust gas treatment equipment | |
US9279357B2 (en) | Double-walled exhaust volume and corresponding manufacturing method | |
US20210180501A1 (en) | Ring catalyst | |
KR100812227B1 (en) | A diverging exhaust pipe for cars and the making method thereof | |
GB2381220A (en) | Gas treatment apparatus | |
US10161280B2 (en) | Method for influencing a fluid flow |
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: 16817507 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: 16817507 Country of ref document: EP Kind code of ref document: A1 |