EP1687086A1 - Systeme d'echappement d'un moteur a combustion interne - Google Patents

Systeme d'echappement d'un moteur a combustion interne

Info

Publication number
EP1687086A1
EP1687086A1 EP04798134A EP04798134A EP1687086A1 EP 1687086 A1 EP1687086 A1 EP 1687086A1 EP 04798134 A EP04798134 A EP 04798134A EP 04798134 A EP04798134 A EP 04798134A EP 1687086 A1 EP1687086 A1 EP 1687086A1
Authority
EP
European Patent Office
Prior art keywords
filter
exhaust system
catalyst material
approximately
surface filter
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.)
Withdrawn
Application number
EP04798134A
Other languages
German (de)
English (en)
Inventor
Markus Widenmeyer
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.)
Robert Bosch GmbH
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 EP1687086A1 publication Critical patent/EP1687086A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9431—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
    • B01J35/27—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a liquid or molten state
    • 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
    • F01N3/0231—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 special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/63—Platinum group metals with rare earths or actinides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/66—Silver or gold
    • B01J23/68—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/682—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium, tantalum or polonium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/19—Catalysts containing parts with different compositions

Definitions

  • the invention relates to an exhaust system for an internal combustion engine, with a depth filter for removing soot from the exhaust gas, at least the depth filter comprising a catalyst material which promotes soot oxidation.
  • An exhaust system of the type mentioned is known from DE 101 30 338 AI. In this an exhaust system for a diesel engine is described. The exhaust system should also be able to filter out soot particles from the exhaust gas.
  • surface filters which are also implemented as wallflow or inflow filters with a honeycomb structure, the flow channels of which are mutually closed, so that the exhaust gas has to flow through the porous filter walls.
  • a filter must, however, be continuously or cyclically freed from the soot that has accumulated or has already accumulated. This is possible using thermal combustion and / or catalytic processes.
  • nitrogen monoxide When using thermal processes, nitrogen monoxide must first be converted from the exhaust gas into nitrogen dioxide. This in turn can oxidize diesel soot from temperatures of approx. 300 ° C. However, since modern internal combustion engines only emit very little nitrogen monoxide, there is often not enough nitrogen dioxide available to convert the diesel soot. In contrast, catalytic processes have so far often been comparatively inefficient because the contact areas between the soot and the catalyst are small.
  • a depth filter is also known from DE 101 30 338 AI. This has an open pore system, which is designed in such a way that even larger soot particles can be separated within the filter body. The filter effect of this depth filter therefore extends over its entire volume or its entire surface. Here too, constipation of the
  • Depth filter counteracted by the fact that it is provided with a catalyst which should enable soot oxidation in the depth filter even at comparatively low temperatures.
  • catalyst particles are finely dispersed on the surface of the depth filter.
  • the object of the present invention is to develop an exhaust system of the type mentioned at the outset in such a way that on the one hand the greatest possible proportion of soot particles the exhaust gas can be filtered out, and that, on the other hand, simple and effective regeneration of the filters used is possible.
  • an inner pore structure of the depth filter is provided with a catalyst material which, at an operating temperature of the depth filter, in particular from a temperature of approximately at most 400 ° C., more preferably of at most approximately 350 ° C, is liquid.
  • the use of a liquid catalyst in the depth filter used has the advantage that the catalyst material can flow to the soot particles in the liquid state, even cover them, and can oxidize soot that has accumulated at much lower temperatures than previously. This creates a much larger contact area between the soot particles and the catalyst material, which significantly increases the oxidation rate of the soot particles deposited in the depth filter.
  • the liquid state is already at the operating temperature of the depth filter, which is normally related to the exhaust gas temperature. The operating temperature can again be reached either in normal operation or in special operating phases.
  • the catalyst material of the depth filter comprises a "molten salt” material, in particular Cs 2 S0 4 V 2 0 5 or Cs vanadates or Ag compounds, in particular Ag vandanates. These materials are in liquid form at temperatures above approx. 350 ° C.
  • These materials can optionally be combined with other catalytically active substances, for example: Rh and / or Pd, on supports such as aluminum, zirconium, cerium oxides and / or mixed oxides such as Ce / Zr0 2 , or without a support; Group 11 elements (Ag, Au, and / or Cu) on supports such as aluminum, zirconium, cerium oxides and / or mixed oxides such as Ce / Zr0 2 , or without supports; Oxygen-storing and releasing materials, for example compounds of Mn, Fe, Ce, Pr; under
  • nitrate-forming materials in particular elements of the alkaline earth group, and of group 3 and the rare earths; and / or materials which are characterized by high acidity, for example zeolites and the following oxides or oxide mixtures: Ti0 2 , Zr0 2 , Si0 2 , Al 2 0 3 , boron oxides.
  • An exhaust system in which the depth filter comprises an open-pore silicon carbide foam filter with pore diameters in the range from approximately 40 ⁇ m to approximately 1000 ⁇ m and a porosity of at least approximately 60% is particularly advantageous.
  • Such a depth filter is comparatively inexpensive and easy to manufacture and has a sufficiently good filter performance.
  • the exhaust system comprises a downstream surface filter and that a catalyst device is arranged upstream of the surface filter, by means of which nitrogen dioxide is formed from the exhaust gas.
  • This exhaust system according to the invention makes it possible to filter out more than 99% of the soot particles contained in the exhaust gas.
  • a depth filter can only filter out a maximum of approximately 90% of the soot particles contained in the exhaust gas, this is made possible by the downstream surface filter, which in turn can filter out up to 95 to 99% of the approximately 10% soot content passing through the depth filter.
  • the downstream surface filter since overall only a small amount of soot reaches the surface filter at all, it can be operated for a comparatively long time without having to be freed from the filter cake that forms there. Overall, an exhaust system is created that works simply, has a long service life, and one
  • the proposed catalyst device can in particular work with a platinum catalyst material.
  • nitrogen dioxide is formed during operation of the internal combustion engine, which burns off the soot on the surface filter at a corresponding temperature.
  • This is also possible continuously and allows the surface filter to be kept completely free, since only a comparatively little soot reaches the surface filter from the depth filter, so that only a comparatively small amount of soot has to be burned off there.
  • the exhaust system comprises a downstream surface filter and that a structure of the surface filter is provided with a catalyst material. Particles that are not retained by the depth filter are at least to a large extent removed by the surface filter filtered out of the gas stream. Due to the upstream depth filter, however, the surface filter only has to cope with part of the total particle mass, which enables its continuous regeneration, for example by means of nitrogen oxides contained in the exhaust gas.
  • Catalyst material further improves the oxidation of the soot particles on the surface filter.
  • the catalyst material of the surface filter comprises a material from the extensive list above.
  • the catalyst material of the surface filter can also be a conventional NO x storage catalyst material, a conventional NH 3 -SCR-
  • Catalyst material and / or include another material for reducing nitrogen oxide emissions.
  • the surface filter thus has an additional function, namely it also serves as a catalyst device for reducing further emissions, in particular nitrogen oxide emissions.
  • a comparatively inexpensive surface filter is a cordierite filter with a cell number of approximately 50 to 300 cpsi, a porosity of approximately 50% and a pore diameter of at most approximately 100 ⁇ m, preferably at most approximately 40 ⁇ m, even more preferably at most approximately 10 ⁇ m.
  • the exhaust system according to the invention is particularly compact if the surface filter has a Pt
  • Catalyst material in particular Pt-Ce / Zr0 2 , and a conventional NO x on its outflow side
  • Storage catalyst material includes. In this case on
  • Input of the surface filter generates the nitrogen dioxide required for soot combustion, and on the On the outflow side, the surface filter works as a NO x storage catalytic converter, which reduces nitrogen oxide emissions.
  • the invention also relates to a method for operating an internal combustion engine with an exhaust system of the type in which a surface filter is connected downstream of the depth filter. It is proposed that soot that is deposited in the surface filter is continuously oxidized. This is possible because only comparatively few soot particles reach the surface filter, and because of the comparatively large volume flow that passes through the surface filter. In this way, the surface filter always remains as continuous as possible, which is optimal for the efficiency of the exhaust system.
  • Figure 1 is a schematic representation of an exhaust system with a depth filter and a downstream surface filter
  • FIG. 2 shows a schematic section through an area of the depth filter from FIG. 1;
  • Figure 3 shows a detail III of Figure 2.
  • FIG. 4 shows a schematic section through an area of the surface filter from FIG. 1. Description of the embodiment
  • an exhaust system of an internal combustion engine bears the reference number 10 overall.
  • the internal combustion engine itself is only shown schematically and is designated by reference number 12.
  • the hot combustion exhaust gases are discharged from the internal combustion engine 12 via an exhaust pipe 14.
  • This initially leads to a depth filter 16 which is provided with a catalytic device 18.
  • the exhaust pipe 14 leads from the depth filter 16 to a surface filter 20. This is provided on its inflow side with a catalytic device 22 and on its outflow side with a further catalytic device 24. It is also explained in great detail below.
  • the internal combustion engine 12 is a diesel internal combustion engine. Soot particles, which are filtered out of the exhaust gas stream by the two filters 16 and 20, are initially contained in their exhaust gas, especially during certain operating phases. With the depth filter 16, the soot particles are deposited inside the filter. The depth filter 16 thus has a filter effect over its total volume or its total surface area. A section of an inner region of the depth filter 16 is shown in FIG. 2. Thereafter, the depth filter 16 has pores 26 which are formed between a structure 28 of the depth filter 16. In the present exemplary embodiment, this structure is produced from silicon carbide, so that a so-called open-cell silicon carbide foam filter 16 is formed.
  • the depth filter 16 all open-porous bodies and fillings made of ceramic and metallic material or combinations of both are suitable, which are suitable for filtering out soot particles from the exhaust gas that flows through the exhaust pipe 14.
  • soot particles should also be able to be filtered out by the depth filters.
  • the pore diameter varies in the range from approximately 40 ⁇ m to approximately 1000 ⁇ m.
  • the depth filter 16 has a porosity of more than 60%.
  • the silicon carbide structure 28 of the depth filter 16 is provided with a catalytic material 18.
  • the catalytic material is selected such that it promotes the oxidation or combustion of the soot particles (reference numeral 30 in FIG. 3) at comparatively low temperatures, thereby preventing the depth filter 16 from becoming blocked.
  • the catalytic material 18 which is used in the depth filter 16 has the special feature that it is liquid at a comparatively low temperature. This temperature can be in the range of the normal operating temperature of the depth filter 16, so that the catalytic material 18 in the
  • molten salt catalyst for example CS 2 SO 4 2 O 5 or in the case of Cs vanadates
  • Temperature at which the catalytic material 18 is liquid at approximately 350 to 400 ° C. Due to the liquefaction of the catalytic material 18, the soot particles 30 deposited in the depth filter 16 are contacted very intimately by the catalytic material 18, in some cases even completely enclosed at least temporarily. As a result, a very high conversion rate is achieved with the same energy input.
  • Such liquid catalysts can also be combined with other of the catalytically active materials described at the outset.
  • the depth filter 16 shown has only a maximum filter efficiency of 90%. This means that at least 10% of the soot particles 30 pass through the depth filter 16 and reach the surface filter 20.
  • the surface filter 20 is a wall flow or wall flow filter. This has a honeycomb-like structure seen in the flow direction, which is made of cordierite and bears the reference number 32 in FIG. Some of the honeycombs are open on the side facing the internal combustion engine 12 and closed on the side facing away from the internal combustion engine 12 (the exhaust gas flow is indicated by arrows 33 in FIG. 4). These honeycombs have the reference number 34 in FIG. 4. Other honeycombs 36 adjacent to the honeycombs 34 are on the same
  • Internal combustion engine 12 side closed and open on the side facing away from the internal combustion engine 12.
  • the filter effect results from the porosity of the structure 32 of the surface filter 20, so the exhaust gas flow passes through the wall surfaces from the honeycomb 34 into the honeycomb 36, corresponding to the arrow 38 in FIG. 4.
  • the surface filter shown in FIG. 4 has a cell number from 50 to 300 cpsi, a porosity of approximately 50% and a pore diameter of 10 to 30 ⁇ m.
  • the porosity of the Structure 32 is selected such that surface filter 20 preferably filters out small soot particles from the exhaust gas flow.
  • the filter efficiency of the surface filter 20 is 95 to 99%. Overall, because of the combination of the depth filter 16 and the surface filter 20, more than 99% of the soot particles are filtered out of the exhaust gas.
  • soot particles 30 deposited on the surface filter 20 form a so-called "filter cake" which, if it is too large, can impair the permeability of the surface filter 20 and thus increase the exhaust gas back pressure.
  • this filter cake from the soot particles 30 forms only very slowly, since there are only very few soot particles overall
  • the surface filter 20 is freed from the soot particles either continuously or cyclically by a so-called CRT process.
  • the surface filter 20 has on its side facing the internal combustion engine 12 (inflow side) a structure 22 with a platinum catalyst material, in the present case a Pt-Ce / Zr0 2 mixture.
  • a platinum catalyst material in the present case a Pt-Ce / Zr0 2 mixture.
  • nitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide anyway.
  • the soot 30 deposited on the surface filter 20 can also preferably be oxidized continuously at comparatively low temperatures (below 400 ° C.).
  • the surface of the structure 32 of the surface filter 20 facing away from the internal combustion engine 12 is provided with a catalyst layer 24, which in the present exemplary embodiment consists of a conventional NO x storage catalyst material.
  • a catalyst layer 24 which in the present exemplary embodiment consists of a conventional NO x storage catalyst material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un système d'échappement d'un moteur à combustion interne comprenant un filtre à lit profond (16) permettant d'enlever la suie des gaz d'échappement. Le filtre à lit profond (16) comporte un matériau catalyseur (18) qui favorise l'oxydation de la suie. Selon l'invention, une structure à pores (28) du filtre à lit profond (16) est pourvue d'un matériau catalyseur (18) qui est liquide à partir d'une température d'environ 400 DEG C maximum, idéalement à partir de 350 DEG C maximum.
EP04798134A 2003-11-15 2004-11-02 Systeme d'echappement d'un moteur a combustion interne Withdrawn EP1687086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10353426A DE10353426A1 (de) 2003-11-15 2003-11-15 Abgassystem für eine Brennkraftmaschine
PCT/EP2004/052748 WO2005046869A1 (fr) 2003-11-15 2004-11-02 Systeme d'echappement d'un moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP1687086A1 true EP1687086A1 (fr) 2006-08-09

Family

ID=34585139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04798134A Withdrawn EP1687086A1 (fr) 2003-11-15 2004-11-02 Systeme d'echappement d'un moteur a combustion interne

Country Status (5)

Country Link
US (1) US20070081925A1 (fr)
EP (1) EP1687086A1 (fr)
JP (1) JP2007514523A (fr)
DE (1) DE10353426A1 (fr)
WO (1) WO2005046869A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502007003465D1 (de) * 2007-02-23 2010-05-27 Umicore Ag & Co Kg Katalytisch aktiviertes Dieselpartikelfilter mit Ammoniak-Sperrwirkung
DE102009033635B4 (de) * 2009-07-17 2020-11-05 Umicore Ag & Co. Kg Katalytisch aktives Partikelfilter mit Schwefelwasserstoff-Sperrfunktion, seine Verwendung und Verfahren zur Entfernung von Stickoxiden und Partikeln
WO2013048294A1 (fr) * 2011-09-30 2013-04-04 Volvo Technology Corporation Système de traitement postcombustion des gaz d'échappement comportant de multiples objets catalytiques
CN106238037B (zh) * 2016-07-29 2019-01-01 无锡威孚环保催化剂有限公司 一种具备高储nh3能力的scr催化剂及其制备方法
CN107754783B (zh) * 2017-11-13 2018-11-30 盐城工学院 一种用于烟气脱硝的Ce-掺杂SrV3O7复合催化剂及其制备方法
CN110975415B (zh) * 2019-11-12 2020-08-18 南京工业大学 一种一体化滤料及制备方法和应用

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US4510265A (en) * 1984-05-04 1985-04-09 Engelhard Corporation Platinum/silver vanadate catalyzed diesel exhaust particulate filter
US6218326B1 (en) * 1998-07-29 2001-04-17 University Of Iowa Research Foundation Supported molten-metal catalysts
JP3821357B2 (ja) * 2001-01-17 2006-09-13 株式会社豊田中央研究所 溶融塩型触媒
EP1251249B2 (fr) * 2001-04-18 2010-06-30 Umicore AG & Co. KG Procédé et dispositif d'élimination des particules de suie de gaz d'échappement d'un moteur diesel
DE10130338A1 (de) 2001-06-26 2003-04-24 Forschungszentrum Juelich Gmbh Dieselrussfilter mit einem feindispers verteiltem Dieselrusskatalysator
US6613299B2 (en) * 2001-11-13 2003-09-02 Sud-Chemie Prototech, Inc. Catalyzed diesel particulate matter exhaust filter
US6764664B2 (en) * 2002-04-22 2004-07-20 Delphi Technologies, Inc. Catalyst for the combustion of diesel soot, methods for making the catalyst and methods of using the catalyst

Non-Patent Citations (1)

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Title
See references of WO2005046869A1 *

Also Published As

Publication number Publication date
WO2005046869A1 (fr) 2005-05-26
US20070081925A1 (en) 2007-04-12
DE10353426A1 (de) 2005-06-23
JP2007514523A (ja) 2007-06-07

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