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1. WO2007025959 - PARTICULATE FILTER WITH A DEVICE FOR PREVENTING THE FILTER FROM BECOMING CLOGGED

Publication Number WO/2007/025959
Publication Date 08.03.2007
International Application No. PCT/EP2006/065763
International Filing Date 29.08.2006
IPC
F01N 3/022 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
022characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/023 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
023using means for regenerating the filters, e.g. by burning trapped particles
F01N 3/031 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
031having means for by-passing filters, e.g. when clogged or during cold engine start
B01D 39/20 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material
20of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
CPC
B01D 2279/30
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2279Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
30for treatment of exhaust gases from IC Engines
B01D 46/0087
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
46Filters ; , i.e. particle separators; or filtering processes specially modified for separating dispersed particles from gases or vapours
0084provided with safety means
0087Bypass or safety valves
B01D 46/525
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
46Filters ; , i.e. particle separators; or filtering processes specially modified for separating dispersed particles from gases or vapours
52Particle separators, e.g. dust precipitators, using filters embodying folded ; corrugated or wound sheet; material
521using folded, pleated material
525which comprises flutes
F01N 2330/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
2330Structure of catalyst support or particle filter
06Ceramic, e.g. monoliths
F01N 2410/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
2410By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
08in case of clogging, e.g. of particle filter
F01N 3/0222
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
022characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
0222the structure being monolithic, e.g. honeycombs
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE] (AllExceptUS)
  • WIRTH, Ralf [DE]/[US] (UsOnly)
  • DUERNHOLZ, Manfred [DE]/[DE] (UsOnly)
  • BECKER, Carsten [DE]/[DE] (UsOnly)
  • DUETSCH, Heinrich [DE]/[DE] (UsOnly)
Inventors
  • WIRTH, Ralf
  • DUERNHOLZ, Manfred
  • BECKER, Carsten
  • DUETSCH, Heinrich
Common Representative
  • ROBERT BOSCH GMBH
Priority Data
10 2005 040 919.930.08.2005DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) PARTIKELFILTER MIT EINRICHTUNG ZUR VERMEIDUNG DER FILTERVERBLOCKUNG
(EN) PARTICULATE FILTER WITH A DEVICE FOR PREVENTING THE FILTER FROM BECOMING CLOGGED
(FR) FILTRE A PARTICULES EQUIPE D'UN DISPOSITIF EMPECHANT L'OBSTRUCTION DU FILTRE
Abstract
(DE)
Die Erfindung bezieht sich auf ein Partikelfilter, insbesondere für Abgas einer selbstzündenden Verbrennungskraftmaschine mit einem Innenrohr (12) und mit einem Flansch (14) mit Befestigungsöffnungen (16). Es ist ein Filterkörper (30) mit Strömungskanälen (38) vorgesehen, der vom Abgas in Längsrichtung (42) durchströmt wird. Der Filterkörper (30) enthält im Außenumfangsbereich eine Bypass-Schicht (46) mit Strömungskanälen (38).
(EN)
The invention relates to a particulate filter, particularly for exhaust gas of a self-ignition internal combustion engine, comprising an inner tube (12) and a flange (14) with fastening openings (16). A filter body (30) is provided with flow channels (38) and is flowed through in a longitudinal direction (42) by exhaust gas. The filter body (30) contains, in the outer peripheral area, a bypass layer (46) with flow channels (38).
(FR)
L'invention concerne un filtre à particules conçu en particulier pour les gaz d'échappement d'un moteur à combustion interne à autoallumage. Ce filtre à particules comprend un tuyau interne (12), et un collet (14) pourvu d'ouvertures de fixation (18). Un corps de filtrage (30) comportant des canaux d'écoulement (38) destinés à être parcourus par les gaz d'échappement en direction longitudinale (42) est prévu. Ledit corps de filtrage (30) comprend une couche de dérivation (46) comportant des canaux d'écoulement (38), dans la zone périphérique externe.
Also published as
EP06793049
EP6793049
Latest bibliographic data on file with the International Bureau