US20080229734A1 - System for Purifying the Exhaust Gases Emitted by Internal Combustion Engines - Google Patents
System for Purifying the Exhaust Gases Emitted by Internal Combustion Engines Download PDFInfo
- Publication number
- US20080229734A1 US20080229734A1 US12/092,298 US9229806A US2008229734A1 US 20080229734 A1 US20080229734 A1 US 20080229734A1 US 9229806 A US9229806 A US 9229806A US 2008229734 A1 US2008229734 A1 US 2008229734A1
- Authority
- US
- United States
- Prior art keywords
- engine
- exhaust gases
- antiparticulate
- filter
- antiparticulate 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.)
- Abandoned
Links
Images
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
- F01N3/08—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
- 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
- F01N13/011—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 purifying devices arranged in parallel
-
- 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
-
- 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
- F01N3/0335—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 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
- 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
-
- 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
- F01N2230/02—Exhaust filters
-
- 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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
-
- 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
Abstract
A system for purifying the exhaust gases emitted by an internal combustion engine (2), comprising a series-connected catalytic silencer (3) and antiparticulate filter (4) which are traversed in succession by an exhaust gas flow leaving the engine (2), said antiparticulate filter (4) being located upstream of the catalytic silencer (3) such as to be traversed by the hot exhaust gases from the engine (2) before they cool substantially.
Description
- The present invention relates to a system for purifying the exhaust gases emitted by automotive internal combustion engines, and in particular by diesel engines.
- The pollutants contained in diesel engine exhaust gases are known to consist mainly of unburnt hydrocarbons (HC), nitrogen oxides (NOx) and solid carbon particles known commonly as particulate.
- To reduce unburnt hydrocarbons and nitrogen oxides, diesel engine purification systems generally comprise a catalytic silencer, which is traversed by the engine exhaust gases and contains catalysts which activate the chemical reactions necessary for reducing the nitrogen oxides and for oxidizing the unburnt hydrocarbons, prior to their release to atmosphere.
- In detail, the catalytic silencer comprises a series of active elements which are traversed in succession by the exhaust gases, including an oxidizing precatalyst, a catalyst and a silencer.
- To reduce the particulate, purification systems comprise a suitable antiparticulate filter located within the catalytic silencer between the oxidizing precatalyst and the catalyst, it consisting of porous material which retains the particulate and allows the aeriform phase to pass. The most widespread antiparticulate filters are currently of ceramic material, typically silicon carbide, however metal filters, for example of sintered metal, are also known. During use, antiparticulate filters clog generally very rapidly, and are therefore periodically subjected to a regeneration step, in which they are raised to high temperature to enable the trapped carbon particles to burn off and free their filtering walls.
- The normal operating temperature of currently used antiparticulate filters is about 300° C., insufficient to ensure particulate combustion, which takes place on raising the operating temperature beyond 600° C.
- Said regeneration is hence achieved by introducing into the antiparticulate filters a suitable mixture of oxygen and easily flammable gases, which on contact with the filtering walls, possibly covered with a catalyst, ignite spontaneously.
- In particular, said regeneration mixture can be introduced either directly by suitable injectors or indirectly by suitably regulating the air/fuel ratio of the engine feed.
- A drawback of known antiparticulate filters is that many regions of their filtering walls do not reach the temperature required for igniting the regeneration mixture. For this reason, combustion takes place only at the hottest points of these filtering walls, which are unable to be completely freed of the accumulated particulate, with consequent loss of system efficiency.
- This phenomenon is due substantially to two contributory causes. The first is that during normal operation the antiparticulate filters are heated by the exhaust gases in a generally disuniform manner, with temperature differences which are greater the lower the thermal conductivity of their construction material is.
- The second is that during exhaust gas passage, the carbon particles contained in the exhaust gases mutually agglomerate and accumulate disuniformly on the on the filtering walls of the antiparticulate filter. This fact means that within the most heavily clogged regions, not all the accumulated particulate can be effectively burnt off, neither do the conditions for regeneration mixture combustion exist.
- The object of the present invention is to overcome the said drawback within the framework of a simple, rational and low-cost solution.
- This object is attained by a system for purifying the exhaust gases emitted by an internal combustion engine, comprising a series-connected catalytic silencer and antiparticulate filter, which are traversed in succession by an exhaust gas flow leaving the engine.
- According to the invention, the antiparticulate filter is located upstream of the catalytic silencer, as close as possible to the engine, such as to be traversed by the exhaust gases before they cool substantially.
- By virtue of this arrangement, the antiparticulate filter is heated to an average operating temperature much higher than in the known art, this enabling all regions of the relative filtering walls to reach the minimum ignition temperature of the regeneration mixture. In this manner, the regeneration process involves the entire antiparticulate filter, the useful life of which is hence effectively increased.
- Preferably, the antiparticulate filter is positioned so close to the engine as to reach an average operating temperature exceeding 600° C., so that combustion of the accumulated particulate can take place continuously during normal system operation, without the need to introduce a specific regeneration mixture.
- According to the invention, the antiparticulate filter can be constructed of any porous material of known type, provided it resists temperatures of the order of 600-800° C.; however a filter of ceramic or metal material is preferably used.
- In particular, a metal material possesses higher mechanical strength, a higher accumulation capacity, and high resistance to thermal stresses. It also enables thin-walled filters to be constructed, which ensure a high regeneration rate and also heat very uniformly because of the high conductivity of the material.
- Further characteristics and advantages of the invention will be apparent on reading the ensuing description provided by way of non-limiting example, with the aid of the figures of the accompanying drawings, in which:
-
FIG. 1 is a schematic illustration of a system according to the invention for purifying the exhaust gases emitted by an automotive diesel engine; -
FIG. 2 is a schematic illustration of an alternative embodiment of the system ofFIG. 1 . - The
system 1 comprises a plurality ofexhaust collector tubes 10 each connected to a respective cylinder of adiesel engine 2, to convey the combustion-produced exhaust gases to acommon meeting point 11, from which anexhaust pipe 12 extends to lead the exhaust gas flow to anexit 13 to atmosphere. - The architecture of the
system 1 is purely indicative and can also be very different depending on the type ofengine 2 and/or on the type of vehicle on which saidsystem 1 is installed, without leaving the scope of the present invention. - A usual
catalytic silencer 3 is located along theexhaust pipe 12, to be traversed by the flow of exhaust gases from thediesel engine 2, and contains suitable catalysts to activate nitrogen oxide (NOx) reduction and unburnt hydrocarbon (HC) oxidation. - According to the invention, upstream of said
catalytic silencer 3, with respect to the flow direction, anantiparticulate filter 4 is positioned contained in a suitable casing, and able to retain the particulate carried in suspension by the exhaust gases, to prevent their release to atmosphere. - Preferably said
antiparticulate filter 4 is constructed of a metal material, for example sintered metal. However it may also be constructed of any other porous material suitable for the purpose, for example ceramic material. - During operation, the
antiparticulate filter 4 is traversed by the hot exhaust gases originating directly from theengine 2, before these cool substantially by flowing through theentire exhaust pipe 12. - In this manner it undergoes considerable heating, enabling substantially each region of the relative filtering walls to reach the minimum temperature for autocombustion of the regeneration mixture to take place during the regeneration step.
- In fact, the extent of this heating varies according to the distance between the
antiparticulate filter 4 and theengine 2, i.e. the overall length of the conduits which connect them together, as this determines the temperature of the exhaust gases passing through theantiparticulate filter 4. - Preferably, the
antiparticulate filter 4 is located in proximity to theengine 2, such as to be heated to an average operating temperature at least exceeding 600° C. - By virtue of this arrangement, the conditions required for autocombustion of the normal exhaust gases emitted by the
engine 2 can be recreated within theantiparticulate filter 4, to enable continuous regeneration in each operating stage, without the need to introduce specific regeneration mixtures. Some possible arrangements for achieving said temperature levels are considered hereinafter. - In the embodiment shown in
FIG. 1 , theantiparticulate filter 4 is located along theexhaust pipe 12, immediately downstream of thepoint 11 at which theexhaust collector tubes 10 meet, preferably upstream of any turbocompressor turbine if present. - In the embodiment shown in
FIG. 2 , theantiparticulate filter 4 is divided into a plurality ofsmaller filters 40, of a number equal to the number of cylinders of theengine 2, and each located along a respectiveexhaust collector tube 10 upstream of themeeting point 11.
Claims (7)
1. A system for purifying the exhaust gases emitted by an internal combustion engine (2), comprising a series-connected catalytic silencer (3) and antiparticulate filter (4) which are traversed in succession by an exhaust gas flow leaving the engine (2), characterised in that, with respect to the direction of said flow, the antiparticulate filter (4) is located upstream of the catalytic silencer (3) such as to be traversed by the hot exhaust gases from the engine (2) before they cool substantially.
2. A system as claimed in claim 1 , characterised in that said antiparticulate filter (4) is positioned in proximity to the engine, such as to be heated by the exhaust gases to an average operating temperature enabling continuous combustion of the particulate.
3. A system as claimed in claim 1 , characterised in that said antiparticulate filter (4) is positioned in proximity to the engine, such as to be heated by the exhaust gases to an average operating temperature exceeding 600° C.
4. A system as claimed in claim 1 , characterised by comprising an assembly of exhaust collector tubes (10) individually conveying the exhaust gases leaving a respective cylinder of the engine (2) to a common meeting point (11), the antiparticulate filter (4) being located immediately downstream of said common meeting point (11).
5. A system as claimed in claim 1 , characterised by comprising an assembly of exhaust collector tubes (10) individually conveying the exhaust gases leaving a respective cylinder of the engine (2) to a common meeting point (11), the antiparticulate filter (4) comprising an assembly of separate filters (40) individually located along a respective exhaust collector tube (10).
6. A system as claimed in claim 1 , characterised in that said antiparticulate filter (4) is of ceramic material.
7. A system as claimed in claim 1 , characterised in that said antiparticulate filter (4) is of metal material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000127A ITRE20050127A1 (en) | 2005-11-11 | 2005-11-11 | PLANT FOR THE PURIFICATION OF EXHAUST GAS EMITTED BY INTERNAL COMBUSTION ENGINES |
ITRE2005A000127 | 2005-11-11 | ||
PCT/EP2006/009535 WO2007054164A1 (en) | 2005-11-11 | 2006-10-03 | System for purifying the exhaust gases emitted by internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080229734A1 true US20080229734A1 (en) | 2008-09-25 |
Family
ID=37603210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/092,298 Abandoned US20080229734A1 (en) | 2005-11-11 | 2006-10-03 | System for Purifying the Exhaust Gases Emitted by Internal Combustion Engines |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080229734A1 (en) |
EP (1) | EP1945923A1 (en) |
JP (1) | JP2009515083A (en) |
CN (1) | CN101297105A (en) |
IT (1) | ITRE20050127A1 (en) |
WO (1) | WO2007054164A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130000277A1 (en) * | 2011-06-29 | 2013-01-03 | Electro-Motive Diesel, Inc. | System for reducing engine emissions and backpressure using parallel emission reduction equipment |
US20150020509A1 (en) * | 2012-05-18 | 2015-01-22 | Louis A. Belanger | Method and system for maximizing fuel efficiency of an internal combustion engine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4663934A (en) * | 1985-04-01 | 1987-05-12 | Arvin Industries, Inc. | Manifold exhaust processor |
US4887427A (en) * | 1985-10-28 | 1989-12-19 | Nissan Motor Company, Limited | Exhaust particle removing system for an engine |
US5486220A (en) * | 1993-06-18 | 1996-01-23 | Sumitomo Electric Industries, Ltd. | Exhaust gas purification filter |
US5930995A (en) * | 1996-08-09 | 1999-08-03 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification device for a compression-ignition combustion engine |
US6349541B1 (en) * | 1998-11-19 | 2002-02-26 | Daimlerchrysler Ag | Exhaust silencer for an internal combustion engine and the method of operation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2686652B1 (en) * | 1992-01-29 | 1994-04-29 | Shell Petroles | PROCESS AND DEVICE FOR THE CONTINUOUS REMOVAL BY POSTCOMBUSTION OF IMBULATED SOLID PARTICLES. |
JP3624820B2 (en) * | 2000-10-24 | 2005-03-02 | トヨタ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
JP2002213227A (en) * | 2000-11-17 | 2002-07-31 | Toyota Motor Corp | Exhaust emission control system and method for controlling exhaust gas |
JP2002180818A (en) * | 2000-12-14 | 2002-06-26 | Toyota Motor Corp | Exhaust emission control device of internal combustion engine |
DE10323385B4 (en) | 2003-05-23 | 2006-02-02 | Daimlerchrysler Ag | Emission control system for an internal combustion engine |
CN1906385A (en) * | 2004-08-31 | 2007-01-31 | 揖斐电株式会社 | Exhaust gas cleanup system |
-
2005
- 2005-11-11 IT IT000127A patent/ITRE20050127A1/en unknown
-
2006
- 2006-10-03 JP JP2008539271A patent/JP2009515083A/en active Pending
- 2006-10-03 EP EP06805981A patent/EP1945923A1/en not_active Withdrawn
- 2006-10-03 WO PCT/EP2006/009535 patent/WO2007054164A1/en active Application Filing
- 2006-10-03 CN CNA2006800401405A patent/CN101297105A/en active Pending
- 2006-10-03 US US12/092,298 patent/US20080229734A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4663934A (en) * | 1985-04-01 | 1987-05-12 | Arvin Industries, Inc. | Manifold exhaust processor |
US4887427A (en) * | 1985-10-28 | 1989-12-19 | Nissan Motor Company, Limited | Exhaust particle removing system for an engine |
US5486220A (en) * | 1993-06-18 | 1996-01-23 | Sumitomo Electric Industries, Ltd. | Exhaust gas purification filter |
US5930995A (en) * | 1996-08-09 | 1999-08-03 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification device for a compression-ignition combustion engine |
US6349541B1 (en) * | 1998-11-19 | 2002-02-26 | Daimlerchrysler Ag | Exhaust silencer for an internal combustion engine and the method of operation |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130000277A1 (en) * | 2011-06-29 | 2013-01-03 | Electro-Motive Diesel, Inc. | System for reducing engine emissions and backpressure using parallel emission reduction equipment |
US8950176B2 (en) * | 2011-06-29 | 2015-02-10 | Electro-Motive Diesel, Inc. | System for reducing engine emissions and backpressure using parallel emission reduction equipment |
US20150020509A1 (en) * | 2012-05-18 | 2015-01-22 | Louis A. Belanger | Method and system for maximizing fuel efficiency of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
ITRE20050127A1 (en) | 2007-05-12 |
CN101297105A (en) | 2008-10-29 |
JP2009515083A (en) | 2009-04-09 |
WO2007054164A1 (en) | 2007-05-18 |
EP1945923A1 (en) | 2008-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101110649B1 (en) | Diesel engine and a catalysed filter therefor | |
US20110016848A1 (en) | System and method for treating diesel exhaust gases | |
KR101223383B1 (en) | Exhaust-gas secondary treatment preceding a turbocharger | |
CN101631935B (en) | Catalyst system and use thereof | |
KR20080089605A (en) | Particulate filter assembly | |
JP2004225579A (en) | Exhaust emission control system | |
JP2012525540A (en) | Diesel aftertreatment system | |
CN102301101A (en) | Device and method for regenerating a particulate filter arranged in the exhaust section of an internal combustion engine | |
JP5763294B2 (en) | Exhaust purification equipment | |
US10107162B2 (en) | Catalyst subassembly, device comprising same for purifying exhaust gases from an internal combustion engine, modular system for the subassembly, and method for manufacturing the subassembly | |
CN102472136A (en) | Method and apparatus for regenerating a particle filter arranged in the exhaust gas tract of an internal combustion engine | |
JP2009074543A (en) | Continuously regenerating particulate filter for internal combustion engine | |
US7805931B2 (en) | Self-sustaining oxy-exothermal filter regeneration system | |
US20060196176A1 (en) | Apparatus for adjusting the temperature of exhaust gases | |
KR101231132B1 (en) | Exhaust Gas Reducing Device for Vehicles with Burner to Improve Purification Performance | |
US7204082B1 (en) | System for combustion of reformate in an engine exhaust stream | |
US20080314032A1 (en) | Segmented Particulate Filter For An Engine Exhaust Stream | |
US20080229734A1 (en) | System for Purifying the Exhaust Gases Emitted by Internal Combustion Engines | |
US8966885B2 (en) | Device, method, and system for emissions control | |
JP2004353596A (en) | Exhaust emission control device | |
KR100763411B1 (en) | Catalytic converter with multi-arrangement type for diesel engine | |
KR100521577B1 (en) | Diesel Particulate Filter for automobile | |
JP2006161629A (en) | Exhaust emission control device | |
JP2007120346A (en) | Exhaust emission control device | |
CN115898609B (en) | Exhaust gas aftertreatment device, control method for exhaust gas aftertreatment device, and vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: UFI FILTERS S.P.A., ITALY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GIRONDI, GIORGIO;REEL/FRAME:021020/0120 Effective date: 20080402 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |