WO2007057256A1 - Element filtrant et filtre pour le traitement secondaire des gaz d'echappement - Google Patents

Element filtrant et filtre pour le traitement secondaire des gaz d'echappement Download PDF

Info

Publication number
WO2007057256A1
WO2007057256A1 PCT/EP2006/067179 EP2006067179W WO2007057256A1 WO 2007057256 A1 WO2007057256 A1 WO 2007057256A1 EP 2006067179 W EP2006067179 W EP 2006067179W WO 2007057256 A1 WO2007057256 A1 WO 2007057256A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter element
cross
sectional area
channels
inlet
Prior art date
Application number
PCT/EP2006/067179
Other languages
German (de)
English (en)
Inventor
Bernd Reinsch
Ruediger Herr
Teruo Komori
Lars Thuener
Stefan Motz
Matthias Kruse
Christian Schiller
Andreas Mattern
Christoph Osemann
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2007057256A1 publication Critical patent/WO2007057256A1/fr

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
    • 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
    • F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/34—Honeycomb supports characterised by their structural details with flow channels of polygonal cross section
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/48—Honeycomb supports characterised by their structural details characterised by the number of flow passages, e.g. cell density
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a filter element for cleaning the exhaust gases of an internal combustion engine according to the preamble of claim 1 and a soot filter with a filter element according to the independent claim 8.
  • Such filter elements are used for example as a soot filter for diesel internal combustion engines.
  • the filter elements often consist of a ceramic material and have a plurality of mutually parallel inlet channels and outlet channels.
  • Filter elements made of ceramic materials are produced by extrusion. This means that the blank of the filter element is a prismatic body with a plurality of mutually parallel channels. The channels of a blank are initially open at both ends.
  • Filter element closed, while another group of channels are closed at the front end of the filter element.
  • two groups of channels are formed, namely the so-called inlet channels, which are closed at the rear end and the so-called outlet channels, which are closed at the beginning of the filter element.
  • the invention has for its object to provide a filter element and a soot filter, in which the local accumulation of soot deposits, in particular in the interior of the filter element avoided, but at least reduced.
  • Inlet channels which are arranged on the inside of the filter element, larger than in the outside of the filter element arranged inlet channels.
  • An embodiment of the filter element according to the invention provides that the cross-sectional areas of the inlet ducts in the interior of the filter element are geometrically similar to the cross-sectional areas of the inlet ducts arranged at the periphery of the filter element and that the cross-sectional areas of the inlet ducts in the interior of the filter Filter element are smaller than the cross-sectional area of the arranged at the periphery of the filter element inlet channels.
  • Cross section of the filter element may be particularly advantageous if the filter element is cylindrical and rotationally symmetrical.
  • the cross-sectional areas of the inlet channels in the interior of the filter element can have a different geometry than the cross-sectional area of the inlet channels arranged at the periphery of the filter element.
  • the effect according to the invention can be focused better on a specific partial area in the interior of the filter element.
  • the inner region of a filter element according to the invention is dimensioned such that its dimensions correspond to those of the feed line.
  • the inventive design of the inlet channels is not limited to certain geometry of inlet channels, but is in principle applicable to many geometries of entrance channels.
  • the invention is particularly advantageous in entrance channels with square, rectangular, hexagonal or cross-shaped cross-section.
  • the filter element is rotationally symmetrical or centrally symmetrical with respect to its longitudinal axis.
  • Figure 2 is an exemplary embodiment of an inventive
  • Filter element in a view from the front and Figure 3 shows a section of a cross section through another inventive filter element.
  • Figure 1 illustrates a soot filter 1 with a feed line 3, a diffuser 5, a housing 7 and a filter element 9 according to the invention in a partially sectioned side view.
  • the soot filter 1 flows through in the direction of the arrows 11.
  • the housing 7 is adjoined by a cone 13 and a discharge line 15.
  • the filter element 9 is gas-tightly connected to the housing so that the exhaust gas (not shown) flowing through the supply line 3 has to flow through the filter element 9.
  • the filter element 9 has an inlet surface 17 and an outlet surface 19.
  • the filter element 19 is crossed by a plurality of channels which extend from the inlet surface 17 to the outlet surface 19.
  • the inlet channels 21 are open at the inlet surface 17 and closed at the outlet surface 19.
  • the so-called outlet channels 23 are closed at the inlet surface 17 and open at the outlet surface 19.
  • the closures of the inlet channel 21 and the outlet channel 23 are shown in Figure 1 as black areas without reference numerals.
  • FIG. 2 shows a cross section through an exemplary embodiment of a filter element 9 according to the invention.
  • FIG. 2 shows a cross section through a first exemplary embodiment of a filter element 9 according to the invention with a square cross section.
  • inlet channels 21 and outlet channels 23 alternate.
  • the inlet channel 21 and the outlet channel 23 have the shape of a square in the exemplary embodiment shown in FIG.
  • inlet channel and outlet channels 23 have a square cross-section with the edge length B.
  • the inlet channels 21 arranged further outward and the outlet channels 23 arranged further outside have a square cross-section with the edge length 2B.
  • FIG. 3 shows a partial embodiment of a second exemplary embodiment of a filter element according to the invention. Shown is only the inner region of the filter element.
  • the inlet channels 21 have the shape of a cross.
  • one of these cross-shaped cross-sectional areas is shown hatched in FIG.
  • the associated outlet channels 23 have a square cross-section.
  • Inlet channel 21 and the outlet channel 23 have different geometries.
  • the ratio between the circumference U and the cross-sectional area A of the inlet channel is again significantly increased compared with the example according to FIG. 2, so that in this geometry the accumulation of soot in the middle of the filter element is even more strongly suppressed becomes.
  • the outer regions, not shown, of this filter element 9 can be designed, as in the first exemplary embodiment, with square cross sections of both the inlet channels 21 and the outlet channels 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L'invention concerne un élément filtrant (9) et un filtre à particules (1), la répartition des températures sur la section de l'élément filtrant (9) pouvant être maintenue sensiblement constante. A cet effet, le rapport entre la circonférence et une aire de section des canaux d'entrée (21) qui sont disposés sur l'intérieur de l'élément filtrant (9) est supérieur à ce même rapport relatif aux canaux d'entrée disposés sur l'extérieur de l'élément filtrant.
PCT/EP2006/067179 2005-11-18 2006-10-09 Element filtrant et filtre pour le traitement secondaire des gaz d'echappement WO2007057256A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005055073A DE102005055073A1 (de) 2005-11-18 2005-11-18 Filterelement und Filter zur Abgasnachbehandlung
DE102005055073.8 2005-11-18

Publications (1)

Publication Number Publication Date
WO2007057256A1 true WO2007057256A1 (fr) 2007-05-24

Family

ID=37453877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/067179 WO2007057256A1 (fr) 2005-11-18 2006-10-09 Element filtrant et filtre pour le traitement secondaire des gaz d'echappement

Country Status (2)

Country Link
DE (1) DE102005055073A1 (fr)
WO (1) WO2007057256A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384507A2 (fr) * 2001-05-02 2004-01-28 Ngk Insulators, Ltd. Corps structural alveolaire, filtre alveolaire et systeme de convertisseur dans lequel ledit corps structural alveolaire est utilise
EP1484483A1 (fr) * 2002-02-26 2004-12-08 Ngk Insulators, Ltd. Filtre a alveoles
EP1541817A1 (fr) * 2003-06-05 2005-06-15 Ibiden Co., Ltd. Corps a structure en nids-d'abeilles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384507A2 (fr) * 2001-05-02 2004-01-28 Ngk Insulators, Ltd. Corps structural alveolaire, filtre alveolaire et systeme de convertisseur dans lequel ledit corps structural alveolaire est utilise
EP1484483A1 (fr) * 2002-02-26 2004-12-08 Ngk Insulators, Ltd. Filtre a alveoles
EP1541817A1 (fr) * 2003-06-05 2005-06-15 Ibiden Co., Ltd. Corps a structure en nids-d'abeilles

Also Published As

Publication number Publication date
DE102005055073A1 (de) 2007-05-24

Similar Documents

Publication Publication Date Title
EP1928577B1 (fr) Element filtre et filtre a particules pourvu de canaux a geometrie identique
EP2654922B1 (fr) Élément de filtre à air
EP1853800B1 (fr) Corps alveolaire a faces fissurees
EP2610457B1 (fr) Dispositif de traitement des gaz d'échappement
DE4137738C2 (de) Rußfilter
DE102018108592A1 (de) Gas/Gas-Mischer zum Einleiten von Gas in den Abgasstrom einer Brennkraftmaschine
WO2005115589A1 (fr) Piece rapportee de nettoyage pour systemes de purification des gaz d'echappement, en particulier pour filtres a particules
DE112016001431T5 (de) Abgasreinigungsfilter
EP2069615B1 (fr) Élément filtrant destiné en particulier au filtrage des gaz d'échappement d'un moteur à combustion interne
EP1787705A1 (fr) Dispositif filtrant, en particulier, pour un système de traitement des gaz d'échappement d'un moteur à combustion interne du type Diesel
EP1928576B1 (fr) Element filtre et filtre a particules a resistance amelioree aux chocs thermiques
WO2005113113A1 (fr) Dispositif filtrant destine notamment a un systeme d'echappement d'un moteur a combustion interne
WO2007057256A1 (fr) Element filtrant et filtre pour le traitement secondaire des gaz d'echappement
WO2009112384A2 (fr) Dispositif de filtrage notamment destiné à un système de gaz d'échappement d'un moteur à combustion interne
EP3214282A1 (fr) Filtre à particules pour un système d'échappement et procédé de fabrication d'un filtre à particules
EP1584801B1 (fr) Dispositif pour purifier des gaz d'échappement d'un véhicule automobile, en particulier pour un filtre à particules d'un moteur diesel, et véhicule automobile comportant un dispositif de ce type
DE102007053084A1 (de) Filterelement und Rußfilter zur Abgasnachbehandlung
WO2008025600A1 (fr) Ensemble de filtration, utilisé en particulier pour un système d'échappement d'un moteur à combustion interne
WO2005068050A1 (fr) Ensemble filtre, en particulier pour un systeme de gaz d'echappement d'un moteur a combustion interne
DE102006021737B4 (de) Filterelement für einen Rußpartikelfilter einer Brennkraftmaschine
WO2007028697A1 (fr) Element filtrant a repartition de suie amelioree
WO2007033904A1 (fr) Element filtre et filtre pour le post-traitement des gaz d'echappement
DE102006016890A1 (de) Filtereinrichtung, insbesondere für ein Abgassystem einer Brennkraftmaschine
DE102006020725A1 (de) Filtereinrichtung, insbesondere für ein Abgassystem einer Brennkraftmaschine
DE102006042363A1 (de) Filterelement, insbesondere zur Filterung von Abgasen einer Brennkraftmaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase

Ref document number: 06793995

Country of ref document: EP

Kind code of ref document: A1