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WO2007078441A1 - Dispositif de dispersion d’échappement - Google Patents

Dispositif de dispersion d’échappement Download PDF

Info

Publication number
WO2007078441A1
WO2007078441A1 PCT/US2006/044621 US2006044621W WO2007078441A1 WO 2007078441 A1 WO2007078441 A1 WO 2007078441A1 US 2006044621 W US2006044621 W US 2006044621W WO 2007078441 A1 WO2007078441 A1 WO 2007078441A1
Authority
WO
WIPO (PCT)
Prior art keywords
dispersion
exhaust
outer flow
axis
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2006/044621
Other languages
English (en)
Inventor
James W. Girard
Figen Lacin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Automotive Operating Co Inc
Original Assignee
Tenneco Automotive Operating Co Inc
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 Tenneco Automotive Operating Co Inc filed Critical Tenneco Automotive Operating Co Inc
Priority to DE112006003493T priority Critical patent/DE112006003493T5/de
Priority to JP2008547237A priority patent/JP2009521639A/ja
Priority to BRPI0620635-2A priority patent/BRPI0620635A2/pt
Publication of WO2007078441A1 publication Critical patent/WO2007078441A1/fr
Priority to GB0810187A priority patent/GB2447577A/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/18—Silencing apparatus characterised by method of silencing by using movable parts having rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or 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
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • 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
    • F01N13/20—Exhaust or silencing apparatus characterised by constructional features having flared outlets, e.g. of fish-tail shape

Definitions

  • the present disclosure relates generally to an exhaust system, and more particularly relates to an exhaust dispersion device for an exhaust system.
  • exhaust systems exist for vehicles and other machines.
  • Some exhaust systems include catalytic converters, diesel particulate filters, NOX traps, or other devices with one or more substrates that treat the exhaust gas flowing through the exhaust system.
  • the present disclosure relates to an exhaust dispersion device for an exhaust system with an outer flow member.
  • the exhaust dispersion device includes a dispersion member capable of being disposed within the outer flow member.
  • the dispersion member defines an axis and includes an upstream end and a downstream end. A cross section of the downstream end perpendicular to the axis is larger than a cross section of the upstream end perpendicular to the axis.
  • the dispersion device also includes an aperture extending through the dispersion member. The aperture is coaxial with the axis. Flow of all exhaust gas through the outer flow member is divided between flow through the aperture and flow between the outer flow member and the dispersion member.
  • the dispersion member is operable to divert the flow of the exhaust gas at least partially toward the outer flow member.
  • the present disclosure relates to an exhaust system that includes an outer flow member and an exhaust dispersion device disposed within the outer flow member.
  • the exhaust dispersion device includes a dispersion member that defines an axis.
  • the dispersion member includes an upstream end and a downstream end. A cross section of the downstream end perpendicular to the axis is larger than a cross section of the upstream end perpendicular to the axis.
  • the exhaust dispersion device also includes an aperture extending through the dispersion member. The aperture is coaxial with the axis. Flow of all exhaust gas through the outer flow member is divided between flow through the aperture and flow between the outer flow member and the dispersion member.
  • the dispersion member is operable to divert the flow of the exhaust gas at least partially toward the outer flow member.
  • the present disclosure relates to an exhaust system for a vehicle that includes an outer flow member and a substrate that is disposed within the outer flow member such that an exhaust gas within the outer flow member can flow toward the substrate.
  • the exhaust system also includes an exhaust dispersion device disposed within the outer flow member.
  • the exhaust dispersion device includes a dispersion member that defines an axis.
  • the dispersion member includes an upstream end and a downstream end. A cross section of the downstream end perpendicular to the axis is larger than a cross section of the upstream end perpendicular to the axis.
  • the exhaust dispersion device also includes an aperture extending through the dispersion member. The aperture is coaxial with the axis.
  • Flow of all the exhaust gas through the outer flow member is divided between flow through the aperture toward the substrate and flow between the outer flow member and the dispersion member toward the substrate.
  • the dispersion member is operable to divert the flow of the exhaust gas at least partially toward the outer flow member as the exhaust gas flows toward the substrate.
  • FIG. 1 is a cross-sectional view of a portion of an exhaust system of a vehicle with an exhaust dispersion device;
  • FIG. 2 is an isometric view of the exhaust system of FIG. 1 ;
  • FIG. 3 is an isometric view of another embodiment of the exhaust dispersion device.
  • FIG. 4 is an end view of the exhaust dispersion device of FIG. 3.
  • FIGS. 1 and 2 a portion of a vehicle 10, specifically, a portion of an exhaust system 12 is shown. It will be appreciated that the exhaust system 12 could be included in any other machine besides a vehicle 10 without departing from the scope of the present disclosure.
  • the exhaust system 12 includes an outer flow member 14.
  • the outer flow member 14 can be a portion of an exhaust after-treatment device, such as a catalytic converter, a diesel particulate filter, an NOX trap, and/or any suitable device without departing from the scope of the present disclosure.
  • the exhaust system 12 also includes a substrate 16 (FIG. 1).
  • the substrate 16 is disposed within the outer flow member 14.
  • the substrate 16 is operable for removing substances from exhaust gas that flows through the exhaust system 12. More specifically, the exhaust system 12 is in fluid communication with an engine (not shown), and exhaust gases from the engine flow through the outer flow member 14 toward the substrate 16. The exhaust gases flow through the substrate 16, and the substrate 16 removes substances, such as soot, carbon monoxide, unburned hydrocarbons, particulate matter and the like.
  • the exhaust system 12 also includes an exhaust dispersion device generally indicated at 18. As will be discussed, the exhaust dispersion device 18 is operable to cause more uniform flow of exhaust gases across an upstream face 20 of the substrate 16.
  • the outer flow member 14 includes an inlet member 11 and a truncated conic member 13.
  • the truncated conic member 13 is coupled to the inlet member 11 at a transition 15.
  • the transition 15 can have any suitable radius.
  • the inlet member 11 is coupled to the truncated conic member 13 by welding.
  • the inlet member 11 and the truncated conic member 13 are integrally attached.
  • the inlet member 11 has a circular cross section and is co-axial with the conic member 13. It will be appreciated, however, that the outer flow member 14 could be of any suitable shape without departing from the scope of the present disclosure. [0021] The smaller end of the conic member 13 is coupled to the inlet member 11 such that the cross-sectional area of the outer flow member 14 increases moving away from the inlet member 11. Also, in the embodiment shown, the substrate 16 is disposed within the outer flow member 14 at the maximum cross-sectional area of the outer flow member 14.
  • the exhaust dispersion device 18 includes an inlet member 22 and a dispersion member 24 coupled to the inlet member 22.
  • the inlet member 22 has a circular cross-section and is axially straight such that a cross-sectional area of the inlet member 22 perpendicular to the axis A is approximately constant along the length of the inlet member 22.
  • the dispersion member 24, on the other hand, has a truncated conic shape and includes an upstream end 26 and a downstream end 28 (FIG. 1). The upstream end 26 of the dispersion member 24 is coupled to the inlet member 22.
  • a cross section of the downstream end 28 perpendicular to the axis, A is larger than a cross section of the upstream end 26 perpendicular to the axis, A.
  • the inlet member 22 and the dispersion member 24 could be of any suitable shape without departing from the scope of the present disclosure.
  • the exhaust dispersion device 18 also includes an aperture 30 (FIG. 2) that extends through the inlet member 22 and the dispersion member 24.
  • the aperture 30 is coaxial with the axis, A.
  • the wall thickness of the inlet member 22 and the dispersion member 24 remains constant across the length of the exhaust dispersion device 18 such that the cross-sectional area of the aperture 30 remains generally constant through the inlet member 22 and increases across the length of the dispersion member 24 moving away from the inlet member 22. Accordingly, the flow of all exhaust gas (represented by dashed arrows in FIG. 1) is divided between flow through the aperture 30 toward the substrate 16 and flow between the outer flow member 14 and the exhaust dispersion device 18 toward the substrate 16.
  • the exhaust dispersion device 18 further includes at least one support member 32.
  • the exhaust dispersion device 18 includes a plurality of support members 32 spaced equally from each other about the axis A. Each support member 32 is coupled to the inlet member 22 at one end, and each support member 32 is also coupled at an opposite end to the outer flow member 14. In the embodiment shown, each support member 32 includes a tab 34 at one end to facilitate attachment to the outer flow member 14.
  • the exhaust dispersion device 18 is coupled to the inlet member 11 of the outer flow member 14, and then the truncated conic member 13 is coupled to the inlet member 11.
  • the support members 32 couple the exhaust dispersion device 18 to the outer flow member 14 such that the inlet member 22 is disposed upstream of the dispersion member 24.
  • the support members 32 also couple the exhaust dispersion device 18 to the outer flow member 14 such that the dispersion member 24 is disposed in spaced relationship relative to the outer flow member 14.
  • the dispersion member 24 and the inlet member 22 are co-axial with the outer flow member 14; however, the dispersion member 24 and the inlet member 22 could be misaligned with the outer flow member 14 without departing from the scope of the present disclosure.
  • the exhaust dispersion device 18 is disposed within the outer flow member 14 such that a cross section taken approximately through the transition 15 perpendicular to the axis, A, intersects the exhaust dispersion device 18.
  • a first angle, ⁇ measured between the axis, A, and a peripheral wall of the outer flow member 14 is at most equal to a second angle, ⁇ ' , measured between the axis, A, and a peripheral wall of the dispersion member 24.
  • the first angle, ⁇ is less than the second angle, ⁇ ' .
  • the exhaust dispersion device 18 forces the flow of exhaust gas outward radially toward the outer flow member 14. Accordingly, the flow of exhaust gas is more evenly distributed across the upstream face 20 of the substrate 16. As such, the substrate 16 can function more effectively, and the operating life of the substrate 16 increases.
  • the dispersion device 118 includes a dispersion member 124 and a plurality of support members 132.
  • the dispersion device 118 also includes a relief 133 that extends from the downstream end 128 toward the upstream end 126. There is a relief 133 on each side of each support member 132.
  • each support member 132 includes an upstream face 135. As shown in FIG. 4, the upstream face 135 is disposed at a positive angle, ⁇ ", relative to a plane that is perpendicular to the axis A. Accordingly, the flow of exhaust gas is diverted at least partially by the dispersion member 124 toward the outer flow member, and the upstream face 135 of each support member 132 further diverts the flow of the exhaust gas for more even flow distribution across the upstream face of the substrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L’invention concerne un dispositif de dispersion d’échappement pour circuit d’échappement avec organe d’écoulement externe. Le dispositif de dispersion d’échappement contient un organe de dispersion pouvant être disposé dans l’organe d’écoulement externe. L’organe de dispersion définit un axe et comporte une extrémité amont et une extrémité aval. Une section transversale de l’extrémité aval perpendiculaire à l’axe est plus grande qu’une section transversale de l’extrémité amont perpendiculaire à l’axe. Le dispositif de dispersion comporte également une ouverture s’étendant à travers l’organe de dispersion. L’ouverture est coaxiale à l’axe. L’écoulement de tous les gaz d’échappement à travers l’organe d’écoulement externe est divisé entre un écoulement à travers l’ouverture et un écoulement entre l’organe d’écoulement externe et l’organe de dispersion. L’organe de dispersion peut permettre de dévier l’écoulement des gaz d’échappement au moins partiellement vers l’organe d’écoulement externe.
PCT/US2006/044621 2005-12-22 2006-11-16 Dispositif de dispersion d’échappement Ceased WO2007078441A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE112006003493T DE112006003493T5 (de) 2005-12-22 2006-11-16 Abgas-Dispergiervorrichtung
JP2008547237A JP2009521639A (ja) 2005-12-22 2006-11-16 排気分散装置
BRPI0620635-2A BRPI0620635A2 (pt) 2005-12-22 2006-11-16 dispositivo de dispersão de exaustão
GB0810187A GB2447577A (en) 2005-12-22 2008-06-04 Exhaust dispersion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/316,170 US20070144158A1 (en) 2005-12-22 2005-12-22 Exhaust dispersion device
US11/316,170 2005-12-22

Publications (1)

Publication Number Publication Date
WO2007078441A1 true WO2007078441A1 (fr) 2007-07-12

Family

ID=38192003

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/044621 Ceased WO2007078441A1 (fr) 2005-12-22 2006-11-16 Dispositif de dispersion d’échappement

Country Status (8)

Country Link
US (1) US20070144158A1 (fr)
JP (1) JP2009521639A (fr)
KR (1) KR20080080992A (fr)
CN (1) CN101341326A (fr)
BR (1) BRPI0620635A2 (fr)
DE (1) DE112006003493T5 (fr)
GB (1) GB2447577A (fr)
WO (1) WO2007078441A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011519400A (ja) * 2008-04-25 2011-07-07 テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド 排気添加剤処理装置、および同装置で用いる混合器
EP2937538A4 (fr) * 2012-12-21 2016-08-31 Futaba Ind Co Ltd Dispositif de purification de gaz d'échappement

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US20080115989A1 (en) * 2006-11-20 2008-05-22 Matte Francois Diesel engine vehicle configurations for evacuation of engine and/or exhaust system heat
US7779961B2 (en) * 2006-11-20 2010-08-24 Matte Francois Exhaust gas diffuser
DE102006055237A1 (de) * 2006-11-23 2008-05-29 Robert Bosch Gmbh Verfahren zur Prüfung der Vollständigkeit einer Regeneration eines Partikelfilters im Abgas eines Verbrennungsmotors
WO2008144385A2 (fr) * 2007-05-15 2008-11-27 Donaldson Company, Inc. Dispositif d'écoulement de gaz d'échappement
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US8043394B2 (en) * 2008-03-21 2011-10-25 GM Global Technology Operations LLC Particulate matter filter assembly with a flow device
DE102009012718B4 (de) 2008-03-21 2019-02-14 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Partikelmaterial-Filteranordnung mit einer Strömungsvorrichtung sowie Verfahren zum Filtern von Partikelmaterial
EP2358982B1 (fr) 2008-12-17 2017-11-08 Donaldson Company, Inc. Dispositif d'écoulement pour système d'échappement
WO2011087527A1 (fr) 2010-01-12 2011-07-21 Donaldson Company, Inc. Dispositif d'écoulement pour système de traitement de gaz d'échappement
US8402758B2 (en) * 2010-03-05 2013-03-26 Paccar Inc Exhaust diffuser
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WO2011163395A1 (fr) 2010-06-22 2011-12-29 Donaldson Company, Inc. Agencement de dosage et de mélange à utiliser dans un traitement post-combustion des gaz d'échappement
EP2652279B1 (fr) * 2010-12-15 2015-05-13 Faurecia Systèmes d'Echappement Ligne d'échappement avec dispositif d'injection de réactif gazeux
WO2013027295A1 (fr) * 2011-08-25 2013-02-28 トヨタ自動車株式会社 Dispositif de purification de gaz d'échappement pour moteur à combustion interne
JP5719745B2 (ja) * 2011-10-11 2015-05-20 川崎重工業株式会社 流体混合器とこれを用いた熱交換システム
US8826649B2 (en) 2011-10-18 2014-09-09 GM Global Technology Operations LLC Assembly for mixing liquid within gas flow
DE102011117090B4 (de) 2011-10-27 2023-01-26 Volkswagen Aktiengesellschaft Abgasreinigungsvorrichtung
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US9551255B2 (en) * 2012-04-13 2017-01-24 International Engine Intellectual Property Company, Llc Mixing plate as stabilizer for ammonia gas injector
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EP2956233B1 (fr) 2013-02-15 2016-12-21 Donaldson Company, Inc. Agencement de dosage et de mélange destiné à être utilisé dans le traitement postcombustion des gaz d'échappement
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US9057312B2 (en) * 2013-10-10 2015-06-16 Cummins Emission Solutions, Inc. System and apparatus for reducing reductant deposit formation in exhaust aftertreatment systems
US20150198073A1 (en) * 2014-01-13 2015-07-16 Caterpillar, Inc. Exhaust aftertreatment system with in-elbow reductant injection
FR3016655B1 (fr) * 2014-01-21 2019-06-07 Renault S.A.S Dispositif de post traitement catalytique de vehicule automobile et deflecteur adapte
FR3048450B1 (fr) * 2016-03-01 2020-01-10 Renault S.A.S. Dispositif de post-traitement catalytique de vehicule automobile comportant un deflecteur
CN105736092B (zh) * 2016-04-21 2018-06-29 杭州携蓝环保科技有限公司 发动机尾气净化的气流均匀装置、净化装置
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JP6958464B2 (ja) * 2018-04-11 2021-11-02 トヨタ自動車株式会社 内燃機関の排気浄化装置
CN110090555B (zh) * 2019-03-29 2021-10-01 哈尔滨工程大学 一种适用于双涡轮船用低速柴油机的对置嵌入式高压scr系统
JP6944978B2 (ja) * 2019-08-28 2021-10-06 Ｉｈｉ運搬機械株式会社 ドローンポート
CN110566318B (zh) * 2019-09-30 2020-12-22 潍柴动力股份有限公司 一种发动机尾气处理系统及处理方法
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JP7507681B2 (ja) * 2020-12-25 2024-06-28 株式会社クボタ 排気ガス拡散装置
CN114718757A (zh) * 2022-03-23 2022-07-08 西北工业大学 一种微型涡喷发动机尾喷管设计方案

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011519400A (ja) * 2008-04-25 2011-07-07 テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド 排気添加剤処理装置、および同装置で用いる混合器
EP2937538A4 (fr) * 2012-12-21 2016-08-31 Futaba Ind Co Ltd Dispositif de purification de gaz d'échappement
US9683476B2 (en) 2012-12-21 2017-06-20 Futaba Industrial Co., Ltd. Exhaust gas purification device

Also Published As

Publication number Publication date
BRPI0620635A2 (pt) 2011-11-16
GB2447577A (en) 2008-09-17
US20070144158A1 (en) 2007-06-28
GB0810187D0 (en) 2008-07-09
KR20080080992A (ko) 2008-09-05
JP2009521639A (ja) 2009-06-04
DE112006003493T5 (de) 2008-10-23
CN101341326A (zh) 2009-01-07

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