EP0779415A1 - Reaktionskammer für die katalytische Reinigung von Verbrennungsauslässen - Google Patents

Reaktionskammer für die katalytische Reinigung von Verbrennungsauslässen Download PDF

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Publication number
EP0779415A1
EP0779415A1 EP96850186A EP96850186A EP0779415A1 EP 0779415 A1 EP0779415 A1 EP 0779415A1 EP 96850186 A EP96850186 A EP 96850186A EP 96850186 A EP96850186 A EP 96850186A EP 0779415 A1 EP0779415 A1 EP 0779415A1
Authority
EP
European Patent Office
Prior art keywords
chamber
exhaust conduit
silencer
segment
resonance
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.)
Granted
Application number
EP96850186A
Other languages
English (en)
French (fr)
Other versions
EP0779415B1 (de
Inventor
Örjan GÖTMALM
Per Holmström
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.)
ABB Technology FLB AB
Original Assignee
ABB Flaekt Marine AB
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 ABB Flaekt Marine AB filed Critical ABB Flaekt Marine AB
Publication of EP0779415A1 publication Critical patent/EP0779415A1/de
Application granted granted Critical
Publication of EP0779415B1 publication Critical patent/EP0779415B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • 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
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/20—Chambers being formed inside the exhaust pipe without enlargement of the cross section of the pipe, e.g. resonance chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea

Definitions

  • the present invention refers to an apparatus for damping noise at an exhaust conduit belonging to a Diesel engine, which conduit comprises a system for injection of a reagent into the combustion exhausts of the engine, at least one reactor chamber for catalytic cleaning of said exhausts, and at least one reactive silencer in communication with said exhaust conduit, the length of said silencer being acoustically adapted to the wave length of the sound waves which are going to be damped within a specific frequency range.
  • a reactive silencer in the form of a quatre wave resonator, a so called Helmholtz resonator, in exhaust systems in order to dampen a certain low frequency noise, e.g. within the range of 35-150 Hz.
  • a conventionally designed quatre wave resonator is however comparatively space consuming and involve a clear risk for collection of soot particles which may cause fire in the exhaust system and a gradual deterioration of the function of the resonator.
  • One object of the present invention is therefore to provide an apparatus for sound damping which does not exhibit the above mentioned drawbacks, and which is simple to integrate into an exhaust system comprising a catalytic reactor.
  • the invention is characterized in that the silencer comprises at least one resonance chamber which is arranged concentric to a straight segment of the exhaust conduit and which is connected to said channel via at least one opening.
  • the opening is located so that it continually drains occurring soot particles into the exhaust conduit.
  • the opening may be provided with an acoustically permeable filter which prevents soot particles from entering the resonance chamber.
  • the resonance chamber is located upstream the reactor chamber. This makes it possible to integrate the resonance chamber, e.g. by means of a gasification unit for injection of the reagent, or a reagent mixer unit.
  • the radially inner wall of the resonance chamber is formed by the outer wall of the exhaust conduit.
  • This wall may be provided with a channel segment which diverges conically downstream, said segment opening out into the reactor chamber and causing a reduction in the pressure drop through the reactor.
  • Two or more resonance chambers may be coaxially located around the exhaust chamber with different lengths that are acoustically adapted to the wave length of the sound waves which are going to be damped within different specific frequency ranges.
  • the expression “concentrically arranged” is used in order to illustrate the location of the silencer apparatus with reference to the exhaust channel and the components included in the exhaust channel: gasification unit, mixer unit and reactor chamber.
  • the expression “concentric” also include other sections than circular, e.g. quadratic and triangular.
  • the installation diagrammatically shown in Fig. 1 comprises a Diesel engine 10 with an exhaust conduit 11 which is connected to a gasification unit 12 for injection and gasification of urea or some other reagent into the exhausts of the engine.
  • the exhausts are conducted from the gasification unit via a first mixer unit 13 and a second mixer unit 14 which mixer units are arranged for providing an even distribution of the reagent in the exhausts.
  • the mixer unit 14 is connected to a reactor chamber 15 which according to prior art is provided with internal support surfaces for not shown honeycomb monoliths of a ceramic material, which contribute to reduce for example contents of nitric oxide in the exhausts.
  • An outlet 16 from the chamber 15 lead directly out into the atmosphere.
  • the mixer unit 14 is built into a pipe segment 17 which is provided with a number of openings 18 opening out into an otherwise closed resonance chamber 19 which is arranged concentrically to the pipe segment 17.
  • the chamber 19 forms by means of its outer walls 20 a reactive silencer the length of which is acoustically adapted to the wave length of those sound waves which are going to be damped within a specific frequency range, e.g. 50-150 Hz.
  • the relations between the section areas for the chamber 19 and the pipe segment 17 determines the capacity for damping sound.
  • the openings 18 are located at the same level as the bottom edge of the chamber 19, so that they are able to drain occurring soot particles being transported by the exhaust stream, back into the pipe segment 17.
  • the silencer frequency range may be broadened or concentrated.
  • the resonance chamber encloses the mixer unit 14, the chamber does not lead to any actual lengthening of the exhaust system of the engine 10.
  • the gas in the resonance chamber will have substantially the same temperature as the gas stream in the exhaust channel, which is acoustically advantageous. Besides, the design leads to a low level of material stress resulting from thermal expansion.
  • Each honeycomb monolith is provided with a stocking 13 which extends along the vertical sides and forms a seal against the adjacent blocks and the side walls 10.
  • a silencer designed according to Fig. 2 and 3 provide a dampening of about 10-20 dB(A) at a flow speed of 25-40 m/sec and a temperature range of 150-500 C°.
  • the exhaust conduit 17 displays a segment 17' which diverges in the direction of flow, which segment opens out into the reactor chamber and provides a reduction of the pressure fall through the reaction chamber.
  • Fig. 4 shows an embodiment of the invention where a further resonance chamber 21 is coaxially arranged around the exhaust conduit 17 inside the resonance chamber 19, and communicates acoustically with the exhaust conduit 17 via openings 22 being located downstream the openings 18. These openings 22 are also located so that they drain soot particles back to the conduit 17.
  • the resonance chamber 21 display a shorter length than the chamber 19 and is in that way acoustically adapted to wave lengths of sound waves which are to be damped within another specific frequency range than that which the chamber 19 is designed for.
  • Fig. 5 shows a gasification unit 12 with spray nozzle 23 which is equipped with two in series located resonance chambers 19, 21, essentially displaying the same sectional area and length. Because the height of the openings 18 of the reactor chamber 19, as seen in the direction of flow, are larger than the hight of the openings 22 of the resonance chamber 21, the two resonance chambers 19, 21 may dampen sound within different ranges of frequency.
  • Fig. 6 shows a reactor chamber 15 having four outer walls together forming a rectangular chamber section.
  • the chamber comprises three levels of honeycomb monolith blocks 24. Every one of the outer walls of the chamber is so designed that it forms a resonance chamber 19 which is connected via openings 18 to the exhaust channel 11, which openings are located upstream the actual reactor chamber. Because the individual resonance chambers 19 are identically designed, they may work together as a single large resonance chamber. This means that the resonance chambers may be made very small, so that they do not add to the dimensions of the reactor chamber appreciably. Also, the resonance chambers 19 have an insulating effect around the reactor chamber, so that the heat radiation to the environment may be reduced.
  • One of the four wall elements of the reactor chamber is preferably dismountable, so that the honeycomb monolith blocks 24 may be exchanged.
  • a silencer unit is provided which to a large extent facilitate installation of a plant catalytic reduction of the exhausts from a Diesel engine, in particular within the limited amounts of space which prevail within a vessel.
  • the reactor chamber may be located at another segment of the exhaust system than shown, e.g. centrally around the gasification unit 12, or downstream the reactor chamber 15. It is possible to provide the apparatus according to the invention with more than two resonance chambers.

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  • 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)
  • Exhaust Silencers (AREA)
  • Catalysts (AREA)
  • Incineration Of Waste (AREA)
EP96850186A 1995-12-11 1996-11-06 Reaktionskammer für die katalytische Reinigung von Verbrennungsgasen Expired - Lifetime EP0779415B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9504439 1995-12-11
SE9504439A SE505569C2 (sv) 1995-12-11 1995-12-11 Reaktorkammare för katalysatorrening av avgaser från dieselmotor

Publications (2)

Publication Number Publication Date
EP0779415A1 true EP0779415A1 (de) 1997-06-18
EP0779415B1 EP0779415B1 (de) 2001-05-23

Family

ID=20400561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96850186A Expired - Lifetime EP0779415B1 (de) 1995-12-11 1996-11-06 Reaktionskammer für die katalytische Reinigung von Verbrennungsgasen

Country Status (6)

Country Link
EP (1) EP0779415B1 (de)
AT (1) ATE201482T1 (de)
DE (1) DE69612948T2 (de)
DK (1) DK0779415T3 (de)
ES (1) ES2159011T3 (de)
SE (1) SE505569C2 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000009869A1 (de) * 1998-08-11 2000-02-24 Siemens Aktiengesellschaft Einrichtung zur katalytischen abgasreinigung
DE19818874C2 (de) * 1998-04-28 2001-06-07 Man B & W Diesel As Kopenhagen Hubkolbenmaschine
DE19818873C2 (de) * 1998-04-28 2001-07-05 Man B & W Diesel Ag Hubkolbenbrennkraftmaschine
WO2002029219A1 (de) * 2000-10-04 2002-04-11 Robert Bosch Gmbh Vorrichtung zur bildung eines reduktionsmittel-abgas-gemisches und abgasreinigungsanlage
WO2014076355A1 (en) * 2012-11-15 2014-05-22 Wärtsilä Finland Oy An exhaust gas noise attenuator unit for internal combustion piston engine
US9387438B2 (en) 2014-02-14 2016-07-12 Tenneco Automotive Operating Company Inc. Modular system for reduction of sulphur oxides in exhaust
DE102006038830B4 (de) * 2006-08-18 2017-04-27 Volkswagen Ag Lader für eine Brennkraftmaschine und eine Brennkraftmaschine mit einem Lader
JP2018013121A (ja) * 2016-07-20 2018-01-25 マン・ディーゼル・アンド・ターボ・エスイー 排ガス後処理システムのための混合装置、排ガス後処理システム、及び、内燃機関
GB2572644A (en) * 2018-04-06 2019-10-09 Jaguar Land Rover Ltd An attenuator for a fluid duct
EP3707355B1 (de) * 2017-11-07 2023-07-05 Wärtsilä Finland Oy Abgasschalldämpfer für ein abgassystem einer brennkraftmaschine, und das abgassystem
US11698008B2 (en) * 2020-02-14 2023-07-11 Tenneco Automotive Operating Company Inc. Exhaust device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2156026B1 (de) 2007-05-15 2016-10-12 Donaldson Company, Inc. Abgasströmungsvorrichtung
WO2010078052A1 (en) 2008-12-17 2010-07-08 Donaldson Company, Inc. Flow device for an exhaust system
CN102713188B (zh) 2010-01-12 2015-08-05 唐纳森公司 排气处理***的流动装置
EP3267005B2 (de) 2010-06-22 2023-12-27 Donaldson Company, Inc. Abgasnachbehandlungsvorrichtung
US8938954B2 (en) 2012-04-19 2015-01-27 Donaldson Company, Inc. Integrated exhaust treatment device having compact configuration
WO2014127264A1 (en) 2013-02-15 2014-08-21 Donaldson Company, Inc. Dosing and mixing arrangement for use in exhaust aftertreatment

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348629A (en) * 1965-10-07 1967-10-24 Gen Motors Corp Resonator silencer
DE1476629A1 (de) * 1963-03-22 1969-07-10 Walker Manufact Company Abgas- und Schalldaempfungs-System fuer Kraftfahrzeuge u.dgl.
US3495680A (en) * 1969-03-13 1970-02-17 Walker Mfg Co Exhaust silencing system
US3648803A (en) * 1969-10-13 1972-03-14 Walker Mfg Co Exhaust system
US3780826A (en) * 1972-08-09 1973-12-25 Tenneco Inc Gas silencing structure
EP0158625A1 (de) * 1984-03-15 1985-10-16 Jenbacher Werke AG Schalldämpfend ausgebildete katalytische Reinigungsvorrichtung für die Abgase von Brennkraftmaschinen
US5321215A (en) * 1993-05-11 1994-06-14 Nelson Industries, Inc. Vertical exhaust system incorporating a water trap
EP0615777A1 (de) * 1993-03-17 1994-09-21 MAN Nutzfahrzeuge Aktiengesellschaft Verfahren und Vorrichtung zur selektiven katalytischen Reduktion von NOx in sauerstoffhaltigen Gasen
US5355973A (en) * 1992-06-02 1994-10-18 Donaldson Company, Inc. Muffler with catalytic converter arrangement; and method
DE4327562A1 (de) * 1993-08-17 1995-02-23 Erwin Dipl Ing Koetter Koaxialer Resonator-Schalldämpfer für hohe Wechseldrücke

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476629A1 (de) * 1963-03-22 1969-07-10 Walker Manufact Company Abgas- und Schalldaempfungs-System fuer Kraftfahrzeuge u.dgl.
US3348629A (en) * 1965-10-07 1967-10-24 Gen Motors Corp Resonator silencer
US3495680A (en) * 1969-03-13 1970-02-17 Walker Mfg Co Exhaust silencing system
US3648803A (en) * 1969-10-13 1972-03-14 Walker Mfg Co Exhaust system
US3780826A (en) * 1972-08-09 1973-12-25 Tenneco Inc Gas silencing structure
EP0158625A1 (de) * 1984-03-15 1985-10-16 Jenbacher Werke AG Schalldämpfend ausgebildete katalytische Reinigungsvorrichtung für die Abgase von Brennkraftmaschinen
US5355973A (en) * 1992-06-02 1994-10-18 Donaldson Company, Inc. Muffler with catalytic converter arrangement; and method
EP0615777A1 (de) * 1993-03-17 1994-09-21 MAN Nutzfahrzeuge Aktiengesellschaft Verfahren und Vorrichtung zur selektiven katalytischen Reduktion von NOx in sauerstoffhaltigen Gasen
US5321215A (en) * 1993-05-11 1994-06-14 Nelson Industries, Inc. Vertical exhaust system incorporating a water trap
DE4327562A1 (de) * 1993-08-17 1995-02-23 Erwin Dipl Ing Koetter Koaxialer Resonator-Schalldämpfer für hohe Wechseldrücke

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818874C2 (de) * 1998-04-28 2001-06-07 Man B & W Diesel As Kopenhagen Hubkolbenmaschine
DE19818873C2 (de) * 1998-04-28 2001-07-05 Man B & W Diesel Ag Hubkolbenbrennkraftmaschine
US6442933B2 (en) 1998-08-11 2002-09-03 Siemens Aktiengesellschaft Device for catalytic exhaust gas purification
WO2000009869A1 (de) * 1998-08-11 2000-02-24 Siemens Aktiengesellschaft Einrichtung zur katalytischen abgasreinigung
WO2002029219A1 (de) * 2000-10-04 2002-04-11 Robert Bosch Gmbh Vorrichtung zur bildung eines reduktionsmittel-abgas-gemisches und abgasreinigungsanlage
DE102006038830B4 (de) * 2006-08-18 2017-04-27 Volkswagen Ag Lader für eine Brennkraftmaschine und eine Brennkraftmaschine mit einem Lader
WO2014076355A1 (en) * 2012-11-15 2014-05-22 Wärtsilä Finland Oy An exhaust gas noise attenuator unit for internal combustion piston engine
US9387438B2 (en) 2014-02-14 2016-07-12 Tenneco Automotive Operating Company Inc. Modular system for reduction of sulphur oxides in exhaust
JP2018013121A (ja) * 2016-07-20 2018-01-25 マン・ディーゼル・アンド・ターボ・エスイー 排ガス後処理システムのための混合装置、排ガス後処理システム、及び、内燃機関
CN107642397A (zh) * 2016-07-20 2018-01-30 曼柴油机和涡轮机欧洲股份公司 用于废气后处理***的混合装置、废气后处理***和内燃机
CN107642397B (zh) * 2016-07-20 2021-10-01 曼恩能源方案有限公司 用于废气后处理***的混合装置、废气后处理***和内燃机
EP3707355B1 (de) * 2017-11-07 2023-07-05 Wärtsilä Finland Oy Abgasschalldämpfer für ein abgassystem einer brennkraftmaschine, und das abgassystem
GB2572644A (en) * 2018-04-06 2019-10-09 Jaguar Land Rover Ltd An attenuator for a fluid duct
GB2572644B (en) * 2018-04-06 2020-11-18 Jaguar Land Rover Ltd An attenuator having a perforated fluid duct surrounded by an enclosure
US11698008B2 (en) * 2020-02-14 2023-07-11 Tenneco Automotive Operating Company Inc. Exhaust device

Also Published As

Publication number Publication date
EP0779415B1 (de) 2001-05-23
SE9504439D0 (sv) 1995-12-11
DE69612948T2 (de) 2001-10-18
SE505569C2 (sv) 1997-09-15
ES2159011T3 (es) 2001-09-16
ATE201482T1 (de) 2001-06-15
DE69612948D1 (de) 2001-06-28
SE9504439L (sv) 1997-06-12
DK0779415T3 (da) 2001-09-17

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