EP0412019B1 - Vorrichtung zur Entfernung von Russteilchen aus Verbrennungsabgasen von Dieselmotoren - Google Patents

Vorrichtung zur Entfernung von Russteilchen aus Verbrennungsabgasen von Dieselmotoren Download PDF

Info

Publication number
EP0412019B1
EP0412019B1 EP19900402232 EP90402232A EP0412019B1 EP 0412019 B1 EP0412019 B1 EP 0412019B1 EP 19900402232 EP19900402232 EP 19900402232 EP 90402232 A EP90402232 A EP 90402232A EP 0412019 B1 EP0412019 B1 EP 0412019B1
Authority
EP
European Patent Office
Prior art keywords
filter
fact
coupling member
housing
guides
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.)
Expired - Lifetime
Application number
EP19900402232
Other languages
English (en)
French (fr)
Other versions
EP0412019A1 (de
Inventor
Christian Bert
André-Jean Berteaud
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0412019A1 publication Critical patent/EP0412019A1/de
Application granted granted Critical
Publication of EP0412019B1 publication Critical patent/EP0412019B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/707—Feed lines using waveguides
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F01N3/028—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means using microwaves
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/031—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start
    • F01N3/032—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start during filter regeneration only
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/701—Feed lines using microwave applicators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/705—Feed lines using microwave tuning

Definitions

  • the present invention relates to a device for eliminating carbonaceous particles contained in the exhaust gases of heat engines, consisting of a filtration element constituted by an envelope channeling the gases and containing a filter and providing a cavity which receives micro -waves from a microwave generator.
  • Patent FR-A 2 588 610 proposes two solutions for obtaining the combustion of carbonaceous particles either by passing them, or by making them stay in the areas of the resonator where the electromagnetic field is maximum.
  • Document EP-A-191 437 also describes a device for eliminating carbonaceous particles contained in the exhaust gases of heat engines, consisting of a filtration element constituted by an envelope channeling the gases and containing a filter and providing a cavity (resonator 1) which receives microwaves from a microwave generator and where the generator is coupled to the filter element by a tubular coupling member opening through a coupling iris in the envelope.
  • a filtration element constituted by an envelope channeling the gases and containing a filter and providing a cavity (resonator 1) which receives microwaves from a microwave generator and where the generator is coupled to the filter element by a tubular coupling member opening through a coupling iris in the envelope.
  • document EP-A-0 327 439 belonging to the state of the art as defined in Article 54, paragraph 3 EPC, exclusively describes the use of two coupling irises per filtration element , opening into the envelope on either side of the filter.
  • the object of the present invention is to provide a device for eliminating particles of the type described above and whose waveguiding system allows optimization of the energy transfer.
  • the device according to the invention is characterized in that the filter defines inside the envelope two cavities extending respectively upstream and downstream of the latter, in the direction of flow of the exhaust gases. and in that the coupling iris opens directly into one of these cavities.
  • the device comprises two filtration elements in parallel and the coupling member whose shape is that of a T consists of a main guide and derived guides connected to the casings of the filtration elements, these guides being metallic and of rectangular sections.
  • the microwaves penetrate into the envelopes by coupling irises which have isolation elements.
  • the coupling member has from 1 to 3 matching pistons.
  • the filtration element 3 consists of an external envelope 31 channeling the gases. It is connected upstream to the pipe 22 and downstream to the pipe 52 and it contains a monolith filter 34.
  • the filter element 4 is similarly composed of an outer casing 41 channeling the gases. It is connected upstream to the pipe 23 and downstream to the pipe 53 and it contains a monolith filter 44.
  • Filters 34 and 44 are filters known per se, ceramic, honeycomb structure and optionally supporting catalysts.
  • Each outer casing 31 and 41 is of cylindrical or elliptical section.
  • the monolith filter 34 or 44 is thermally insulated at its periphery. Its diameter can be substantially equal to that of the envelope and its length adapted to form inside the envelope two cavities, one 35 or 45 upstream, the other 36 or 46 downstream .
  • Microwaves are sent to the upstream cavities 35 and 45.
  • the device comprises a microwave generator 6 associated with a coupling member 7 of general T shape supplying the cavities 35 and 45 with microwaves.
  • the coupling member 7 consists of a main guide 71 and derived guides 72 and 73 having a tubular shape and a rectangular section. It allows the propagation of the only fundamental mode at 2.45 GHz noted TE01.
  • the dimensions of the main guide section are marked a and b. As an indication, these dimensions are 86 x 43 mm.
  • the axis of this main guide is parallel to the axes of gas flow in the filters. We could easily carry out an equivalent assembly with the main guide perpendicular to the axes of gas circulation. We would then be with a bend called "Plan H" while the example chosen implements a bend called "Plan E".
  • the main guide 71 is associated with 1, 2 or 3 tuning pistons (2 in the example chosen) which can sink more or less into the guide 71 perpendicularly to the axis thereof. These pistons provide variable susceptances. As an indication, the distance between the pistons is advantageously chosen in the vicinity of ⁇ g / 4 or 3 ⁇ g / 8 where ⁇ g is the guided wavelength.
  • the main guide 71 is connected to two derivative guides 72 and 73 of tubular shape and of rectangular section. These two guides are coaxial and extend perpendicular to the axes of circulation of the gases in the elements 3 and 4.
  • the short side b ′ of the section of the lateral guides 72, 73 is approximately equal to half of the short side b of the main guide 71.
  • the long sides with sections 71, 72, 73 are equal.
  • junction of the derived guides with the main guide can also be carried out using bent waveguides if care is taken to maintain the shapes and dimensions of the straight section during the curvature, the value of the radius of curvature being, moreover, less critical for obtaining good performance.
  • the lateral guides 72 and 73 open into the envelopes 31 and 41 at the level of the cavities 35 and 45 (delimited by the ceramic filters) by coupling irises 37 and 47 respectively. These irises are orifices of smaller section than that of the derived guides. The shape and dimensions of these irises are chosen so as to transfer the most microwave energy into the resonator charged by the filter.
  • the coupling irises 37 and 47 have isolation elements 38 and 48 which allow propagation without attenuation of the microwaves, but prevent the passage of carbonaceous particles towards the derived guides.
  • These elements 38 and 48 are, for example, ceramic plates or discs.
  • a controlled switching valve 24 directs the exhaust gases to one or other of the filters 34 or 44 subjected to the microwaves. In this way, one filter becomes charged with particles while the other filter is in the phase of microwave elimination of the particles.
  • a valve system is advantageously provided in the coupling member 7. It makes it possible to send all of the microwave power to the filtering element in regeneration by obstructing the lateral guide relating to the other filtering element.
  • This constructive arrangement is not limitative of the fact that it is possible to temporarily divert the exhaust gases through a bypass duct without a filter by cleaning a single main filter as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (6)

  1. Vorrichtung zur Entfernung von Rußteilchen, die in den Abgasen von Dieselmotoren enthalten sind, mit einer Filteranordnung (3 oder 4), die aus einer Umhüllung (31 oder 41) zur Abfuhr der Gase besteht und die ein Filter (34 oder 44) enthält, welchem von einem Mikrowellengenerator erzeugte Mikrowellen zugeführt werden, wobei der Generator mit der Filteranordnung über ein rohrförmiges Kopplungsteil verbunden ist, das mittels einer einzigen Kopplungsblende (37 oder 47) in der Umhüllung mündet, dadurch gekennzeichnet, daß das Filter einen vollständigen Querschnitt der Umhüllung ausfüllt, daß es im Inneren der Umhüllung zwei Kammern (35, 36 oder 45, 46) bildet, die sich in Strömungsrichtung der Abgase gesehen stromaufwärts und stromabwärts von ihm befinden und daß die Kopplungsblende direkt in einer der beiden Kammern (35 oder 45) mündet.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie zwei parallele Filteranordnungen (3 und 4) aufweist und daß das T-förmige Kopplungsteil (7) aus einem Hauptleiter (71) und zwei Nebenleitern (72, 73) besteht, welche mit den Umhüllungen für die Filteranordnungen verbunden sind.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß ein Umlenkfilter (24) die Abgase in Richtung des einen Filters (34) oder des anderen Filters (44) lenkt, im Hinblick darauf, daß ständig ein Filter zur Aufnahme der Teilchen einsatzbereit ist, während wenigstens ein anderes Filter sich im Zustand der Entfernung der Teilchen mittels der Mikrowelle befindet.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß eine Ventilanordnung im Kopplungsteil (7) es ermöglicht, die Gesamtheit der Mikrowellenleistung der zu reinigenden Filteranordnung zuzuführen.
  5. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Wand des Kopplungsteils an der Verbindung mit dem Hauptleiter mit den Nebenleitern eine divergente Gestalt (76) aufweist.
  6. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Verbindung des Hauptleiters mit den Nebenleitern mit Hilfe von gekrümmten Wellenleitern erfolgen kann.
EP19900402232 1989-08-04 1990-08-03 Vorrichtung zur Entfernung von Russteilchen aus Verbrennungsabgasen von Dieselmotoren Expired - Lifetime EP0412019B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910569A FR2650627B1 (fr) 1989-08-04 1989-08-04 Dispositif d'elimination des particules carbonees contenues dans les gaz d'echappement de moteurs thermiques
FR8910569 1989-08-04

Publications (2)

Publication Number Publication Date
EP0412019A1 EP0412019A1 (de) 1991-02-06
EP0412019B1 true EP0412019B1 (de) 1995-04-19

Family

ID=9384503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900402232 Expired - Lifetime EP0412019B1 (de) 1989-08-04 1990-08-03 Vorrichtung zur Entfernung von Russteilchen aus Verbrennungsabgasen von Dieselmotoren

Country Status (4)

Country Link
EP (1) EP0412019B1 (de)
DE (1) DE69018727T2 (de)
ES (1) ES2071056T3 (de)
FR (1) FR2650627B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9126560D0 (en) * 1991-12-13 1992-02-12 Staffordshire Polytechnic Ente Microwave heating method and apparatus
FR2701514B1 (fr) * 1993-02-12 1995-03-24 Renault Procédé d'épuration par micro-ondes des gaz d'échappement de moteurs à combustion interne et dispositif de mise en Óoeuvre.
EP1541819A1 (de) * 2003-12-12 2005-06-15 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO Microwellen regenerierter Diesel-Russfilter
DE102006044893B4 (de) * 2006-09-22 2011-06-30 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. Steuerungssystem für Mikrowellenregeneration für einen Dieselpartikelfilter
CN105179049A (zh) * 2015-09-18 2015-12-23 浙江大学 基于微波加热再生技术的双腔体式柴油机尾气颗粒捕集器
GB201722035D0 (en) 2017-12-28 2018-02-14 Arcs Energy Ltd Fluid traetment apparatus for an exhaust system and method thereof
WO2022168116A1 (en) * 2021-02-02 2022-08-11 Chakr Innovation Private Limited System and method for microwave based intermittent regeneration for particulate filter(s) of diesel engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324965A (en) * 1979-07-25 1982-04-13 Hermann Berstorff Maschinenbau Gmbh Microwave heating method and apparatus including adjustable tuning members
DE3024539C2 (de) * 1980-06-28 1982-06-09 Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg Vorrichtung zum Beseitigen von Ruß aus den Abgasen einer Brennkraftmaschine
JPS57165616A (en) * 1981-04-04 1982-10-12 Nippon Soken Inc Exhaust gas purifier for internal combustion engine
JPS58142184A (ja) * 1982-02-19 1983-08-23 大阪瓦斯株式会社 乾燥装置
DE3504737A1 (de) * 1985-02-12 1986-08-14 Bayerische Motoren Werke AG, 8000 München Vorrichtung und verfahren zum beseitigen von russ o.dgl. aus den abgasen einer brennkraftmaschine
DE3528445A1 (de) * 1985-08-08 1987-02-19 Bayerische Motoren Werke Ag Vorrichtung und verfahren zum beseitigen von russ o.dgl. aus den abgasen einer brennkraftmaschine
FR2626783B1 (fr) * 1988-02-05 1990-07-20 Renault Dispositif d'elimination par micro-ondes des particules carbonees contenues dans les gaz d'echappement de moteurs thermiques

Also Published As

Publication number Publication date
EP0412019A1 (de) 1991-02-06
FR2650627A1 (fr) 1991-02-08
DE69018727T2 (de) 1995-11-23
ES2071056T3 (es) 1995-06-16
DE69018727D1 (de) 1995-05-24
FR2650627B1 (fr) 1994-09-16

Similar Documents

Publication Publication Date Title
EP0327439B1 (de) Vorrichtung zur Entfernung von Russteilchen aus Verbrennungsabgasen von Dieselmotoren durch Mikrowellen
Haus et al. Theory of cascaded quarter wave shifted distributed feedback resonators
US5074112A (en) Microwave diesel scrubber assembly
EP0412019B1 (de) Vorrichtung zur Entfernung von Russteilchen aus Verbrennungsabgasen von Dieselmotoren
JPH0424529B2 (de)
EP0584350B1 (de) Abgasleitung für eine zweitakt-brennkraftmaschine
FR2689933A1 (fr) Tuyau d'échappement de moteur à combustion interne comportant un catalyseur de démarrage disposé à proximité du moteur .
FR2723761A1 (fr) Turboreacteur equipe d'un systeme de degivrage sur le carter d'entree
WO2020053514A1 (fr) Panneau de traitement acoustique pour turboréacteur
EP1579112A1 (de) Schubumkehrvorrichtung mit optimiertem strahlumkehrgitter
DE3666062D1 (en) Apparatus for eliminating the soot or the like from the exhaust gases of an internal-combustion engine
FR2604305A1 (fr) Filtre composite a large bande de type plan e
EP0266395B1 (de) Gewellte reflektor-vorrichtung und freielektronenlaser-verfahren
EP0243559B1 (de) Schalldämpfer für Gasstrom
EP1108125A2 (de) Abgaskrümmer für eine brennkraftmaschine
FR2509536A1 (fr) Filtre hyperfrequence comportant des couplages entre troncons de ligne et des moyens de reglage
CA1131322A (fr) Filtre hyperfrequence
FR2701514A1 (fr) Procédé d'épuration par micro-ondes des gaz d'échappement de moteurs à combustion interne et dispositif de mise en Óoeuvre.
EP3775524B1 (de) Schalldämmplatte für ein turbostrahltriebwerk
EP0391014B1 (de) Absorptions-Schalldämpfer für Brennkraftmaschinen, insbesondere für Geländefahrzeuge
FR2601530A1 (fr) Procede et appareil pour le transfert et l'injection d'energie rf d'un generateur vers une charge resonnante
EP0221805A1 (de) Verfahren zur Behandlung von in zirkulierenden Gasen enthaltenen Kohlenstoffpartikel, insbesondere in den Abgasen eines Dieselmotors
FR2716935A1 (fr) Collecteur d'admission à impédance modulable et faible perte de charge.
EP0128798B1 (de) Abstimmbare selektive Einrichtung mit magnetostatischen Volumenwellen
FR2713701A1 (fr) Silencieux pour courant gazeux.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES GB IT

17P Request for examination filed

Effective date: 19910710

17Q First examination report despatched

Effective date: 19920624

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19950419

Ref country code: GB

Effective date: 19950419

REF Corresponds to:

Ref document number: 69018727

Country of ref document: DE

Date of ref document: 19950524

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2071056

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19950804

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19950419

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960501

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20001102