CN203532009U - Particle filter and motor vehicle - Google Patents
Particle filter and motor vehicle Download PDFInfo
- Publication number
- CN203532009U CN203532009U CN201320605734.3U CN201320605734U CN203532009U CN 203532009 U CN203532009 U CN 203532009U CN 201320605734 U CN201320605734 U CN 201320605734U CN 203532009 U CN203532009 U CN 203532009U
- Authority
- CN
- China
- Prior art keywords
- honeycomb ceramics
- stopper
- outlet end
- particle filter
- particulate 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2459—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the plugs
-
- 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
- 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
- F01N3/025—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 fuel burner or by adding fuel to exhaust
- F01N3/0253—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 fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Materials (AREA)
Abstract
The utility model discloses a particle filter for an engine. The particle filter comprises a honeycomb body and plugs, wherein the honeycomb body is provided with an inlet end, an outlet end and a porous inner wall through which a plurality of exhaust gas runners are formed, the exhaust gas can flow through the porous inner wall through the plug, and the plug is installed in a preset runner. The particle filter comprises the plug at the inlet end of the honeycomb body, the plug at the outlet end of the honeycomb body and the plug which is used for improving the regeneration efficiency of the particle filter and installed between the outlet end and the inlet end of the honeycomb body to increase the carbon smoke captured by the porous inner wall close to the inlet end of the honeycomb body, and the plug at the outlet end can be repositioned to be closer to the inlet end to form the middle plug. The utility model further discloses an engine vehicle which is provided with the engine and the particle filter for receiving the waste gas flow from the engine. The particle filter is the particle filter mentioned above. By means of the technical scheme, the thermal stress in the honeycomb body can be reduced, and the regeneration efficiency of the particle filter can be improved.
Description
Technical field
The utility model relates to a kind of particulate filter of the improved motor for Motor Vehicle, particularly, relates to the method and apparatus of the regeneration efficiency that improves this filter cleaner.
Background technique
For instance but be not limited to this example, No. 7691167 patent of the U.S. provides a kind of ceramic honeycomb filter cleaner consisting of ceramic honeycomb body, the porous partitioning wall that this ceramic honeycomb body comprises perisporium and is positioned at perisporium.Stopper is used to alternately be sealed in to property the opening end of the flow channel forming between porous partitioning wall, and the port that makes on flow channel some be positioned at the entry end place of honeycomb ceramics is closed, and some ports that are positioned at the outlet end place of honeycomb ceramics are closed simultaneously.
The waste gas that comprises particulate matter flows into open entry end, through porous partitioning wall, enters adjacent flow channel, then from open outlet end, with the form of clean gas, discharges.When the particulate matter comprising in waste gas passes porous partitioning wall, it can be trapped in the little space of porous partitioning wall.Therefore ceramic honeycomb filter cleaner serves as exhaust gas cleaning filter cleaner.
The problem of this device is that the distribution of soot is uncontrolled.In the regenerative process of particulate filter, near the soot of inlet side that regeneration or after-flame are trapped in honeycomb ceramics needs a small amount of auxiliary fuel relatively fast and only, but after-flame is trapped near the soot of outlet end of honeycomb ceramics, just need to use considerable auxiliary fuel that energy is provided.
In addition, because the inlet side intensification of honeycomb ceramics in regenerative process is rapid, and the intensification of the outlet end of honeycomb ceramics is relatively slow, so can produce obvious temperature gradient in honeycomb ceramics, can cause like this in honeycomb ceramics, producing higher thermal stress in regenerative process.
Model utility content
First aim of the present utility model is to provide a kind of method that improves the regeneration efficiency of diesel soot filter.
Second target of the present utility model is to provide the diesel soot filter that a kind of regeneration efficiency is improved.
According to first aspect of the present utility model, a kind of method that improves the regeneration efficiency of particulate filter is provided, the method comprises: provide there is entry end, outlet end and the honeycomb ceramics that limits the porous inwall of a plurality of waste gas runners; For from predetermined runner, stopper being installed through removing particulate matter the waste gas streams of porous wall, these stoppers comprise at the stopper of the entry end of honeycomb ceramics, at the stopper of outlet end and the stopper at place, the neutral position between honeycomb ceramics entry end and outlet end of honeycomb ceramics; And be location and the distribution of the mobile modeling through the waste gas of honeycomb ceramics with stopper in the middle of optimizing.
Can adopt computation fluid dynamics to carry out the mobile modeling for the waste gas through honeycomb ceramics.
The regeneration efficiency that improves particulate filter can at least comprise following one of them: reduce the required fuel of regeneration filter cleaner; Shorten the time that regeneration event spends; And the soot that increase is caught by filter cleaner passes through regeneration event and removed percentage.
The method can further comprise that the position that outlet end stopper is readjusted to more close entry end is with stopper in the middle of forming.
The position of middle stopper can be optimized to increase the amount of soot of being caught by the porous wall of the entry end near honeycomb ceramics.
According to second aspect of the present utility model, provide a kind of particulate filter for motor.This filter cleaner comprises having entry end, the honeycomb ceramics of the porous inwall of outlet end and a plurality of waste gas runners of restriction, and for impel the stopper that flows and install through the waste gas of porous wall in predetermined runner, wherein, this diesel soot filter comprises the stopper of the entry end that is positioned at honeycomb ceramics, at the stopper of the outlet end of honeycomb ceramics and the regeneration efficiency of diesel soot filter is installed on the outlet end of honeycomb ceramics and the stopper at place, the neutral position between entry end is caught amount of soot to increase by the porous wall of the entry end near honeycomb ceramics in order to improve, and in the middle of these, stopper is the outlet end stopper that is repositioned to the entry end of more close honeycomb ceramics.
This particulate filter can be diesel soot filter.
Middle stopper can be arranged to optimize the distribution of the soot of being caught by diesel soot filter.
Middle stopper can be towards the location, position of the entry end of honeycomb ceramics.
The regeneration efficiency that improves diesel soot filter can at least comprise following one of them: reduce and make the required fuel of filter regeneration; Shorten the time that regeneration event spends; And the soot that increase is caught by filter cleaner passes through regeneration event and removed percentage.
According to the 3rd aspect of the present utility model, a kind of Motor Vehicle that has motor and be arranged to receive from motor the particulate filter of waste gas streams is provided, wherein, particulate filter is according to the filter cleaner described in second aspect of the present utility model.
By the technical solution of the utility model, can reduce the thermal stress in honeycomb ceramics and improve the regeneration efficiency of particulate filter.
Accompanying drawing explanation
Referring now to accompanying drawing, by example, the utility model is described, wherein:
Fig. 1 is the schematic diagram having according to the Motor Vehicle of the particulate filter of the utility model first aspect;
Fig. 2 is the cross section that cutting forms the honeycomb ceramics of a part for particulate filter shown in Fig. 1;
Fig. 3 is the local longitdinal cross-section diagram of particulate filter, and it comprises along the resulting cross section of Fig. 2 center line X-X cutting honeycomb ceramics;
Fig. 4 is that it shows the distribution of a plurality of middle stoppers along the sectional view of Fig. 3 center line Y-Y cutting gained;
Fig. 5 a is illustrated in the entry end place of honeycomb ceramics and the temperature variation at outlet end place during the regeneration event of diesel soot filter of prior art; And
Fig. 5 b is illustrated according to the entry end place of honeycomb ceramics and the temperature variation at outlet end place during the regeneration event of the diesel soot filter after the utility model optimization.
Embodiment
With reference to Fig. 1, show the Motor Vehicle 1 that there are four wheels 2 and be controlled by the diesel engine 5 of electronic controller 10.
Air enters motor 5 by intake manifold (not shown), and fuel by a plurality of fuel injector (not shown)s, be injected into motor 5 each cylinder in.Products of combustion leaves motor 5 by gas exhaust manifold 6 with the form of waste gas, then along outlet pipe 7, flows to diesel engine particle catcher or diesel soot filter (DPF) 20.Waste gas streams is through diesel soot filter 20, and combustion particle is removed at this, and then waste gas flows to atmosphere by tailpipe 8 from DPF20.Should be appreciated that the exhaust gas flow path from motor 5 to atmosphere and can comprise other exhaust gas aftertreatment (such as catalytic converter).In addition, in the exhaust gas flow path in DPF20 downstream, can comprise one or more noise suppressors (such as baffler).
With reference to Fig. 2 to Fig. 4, DPF20 comprises the honeycomb ceramics 21 with outer wall 25.In related domain, honeycomb ceramics 21 and outer wall 25 are called as sometimes " filter block " or are known as simply " brick ".Honeycomb ceramics can be made by the material of the high temperature of the various exhaust streams that can stand motor.For example but do not limit, these materials may be silicon carbide, steinheilite or aluminum titanium alloy.
The outer wall 25 of honeycomb ceramics 21 is fixed in the central position 27 of metal ceramic, and metal ceramic also comprises entrance end cap 20a and outlet end cap 20b.Entrance end cap 20a is connected to outlet pipe 7, and outlet end cap 20b is connected to tailpipe 8.Waste gas from motor 5 enters honeycomb ceramics 21 by entry end as shown in arrow " A ", then as shown in arrow " B ", by outlet end, flows out honeycomb ceramics 21.
Honeycomb ceramics 21 defines many flow paths or runner 23, only indicates one in Fig. 2 to Fig. 4.Each runner 23 all only indicates two by porous wall 24(in Fig. 3) to separate with adjacent runner, waste gas is by flowing like this.Porous wall 24 is caught its particulate matter of flowing through, so that cleaning exhaust gas.
Some of them runner 23 is sealed by entry end sealing plug 22F separately at the entry end place of honeycomb ceramics 21, and other runners 23 are sealed by outlet end sealing plug 22R separately at the outlet end place of honeycomb ceramics 21.This distribution of end plug 22F, 22R is alternately sealed respectively most of runner 23 at outlet end place and entry end place, this impels waste gas to flow through porous wall 24 in mode shown in arrow F in Fig. 3.
Yet according to the utility model structure DPF in the situation that, each sealing plug 22M that the common runner 23 being closed at the outlet end of honeycomb ceramics 21 of a part can be replaced by by the position between honeycomb ceramics 21 entry ends and outlet end seals.
The quantity of these intermediate seal plugs 22M and the distribution of position exhaust-gas flow modeling and the soot distribution based in honeycomb ceramics 21 determined.This modeling is commonly called " computation fluid dynamics " (CFD), and the application that relates to numerical method and algorithm is flowed with the fluid that solves and analyze through object.
In this example, CFD is used to determine quantity and the best located of middle stopper 22M, thereby improves the regeneration efficiency of diesel soot filter.
If at least realize a following situation, can improve regeneration efficiency: the total amount of fuel for the DPF20 that regenerates reduces; The time shorten that regeneration DPF20 spends; And the percentage that removes soot in the situation that not increasing fuel use amount in regenerative process increases.
For making diesel soot filter regeneration, the temperature in diesel soot filter must raise, so that after-flame or oxidation are captured in the soot in the porous wall 24 of honeycomb ceramics 21.For realizing this target, conventionally can use later stage or follow-up fuel to spray, using and improve the temperature of waste gas and/or enter while burning in DPF as additional heating source at unburned fuel.The waste gas that also common fuel carries in catalyzer or heating upstream oxidation catalytic converter carrys out assisted Regeneration.
In all situations, the temperature rising in DPF and the exothermic reaction of initiation soot, thereby the soot of after-flame accumulation.Due to some reasons, do not expect to use later stage or follow-up fuel to spray in motor 5.First, because follow-up fuel sprays not in order to form motor 5 power, so it has negative effect to fuel use/fuel efficiency for engine.Secondly, because it can cause lubricating oil dilution and therefore may increase mechanical wear, it is disadvantageous that therefore follow-up fuel sprays.
By using the middle stopper 22M towards the entry end location of honeycomb ceramics 21, near the more soots of entry end accumulation of honeycomb ceramics 21.Therefore,, in the early stage of regeneration, due to the volume increase of burned soot, can there is stronger exothermic reaction and therefore produce more heats.The heat increasing (starting stage of especially regenerating) flowing by waste gas in runner 23 passed honeycomb ceramics 21 and transmitted.Extra heat contributes to heat honeycomb ceramics 21, especially towards honeycomb ceramics 21 outlet end, heats, so that outlet end reaches the soot required temperature of regenerating quickly.In this way, because the outlet end heating of honeycomb ceramics 21 is very fast, therefore need the fuel still less DPF20 that regenerates, and shortened the time that regeneration DPF20 spends.In addition, increased the amount of soot removing, this is that entry end has experienced strong exothermic reaction and continued in the incipient stage of regeneration event and received fuel until regeneration event finishes because the soot of catching is more hunted down at the entry end of honeycomb ceramics 21 vast scale.That is to say, during whole regeneration event, all may regenerate at the entry end place of honeycomb ceramics 21, and at the outlet end of honeycomb ceramics 21, before regeneration starts, exist and postpone.That is to say the regeneration experience longer time that the reproduction ratio occurring at honeycomb ceramics 21 entry ends occurs at honeycomb ceramics 21 outlet end.
Especially with reference to Fig. 5 a and Fig. 5 b, show two temperature temporal evolution curves during regeneration event, two curves show respectively the temperature of DPF in regeneration event that adopt prior art and the temperature in regeneration event according to the DPF of the utility model structure.
Can find out, in the incipient stage of regeneration event, due to very strong exothermic reaction having occurred, therefore with respect to prior art, according to the entry end temperature of honeycomb ceramics 21 of the present utility model, raise.Yet in the ending phase of regeneration event, with respect to prior art, the outlet end temperature of honeycomb ceramics 21 of the present utility model has reduced.The high temperature that can produce when prior art regeneration ending is harmful to, because it has increased the thermal stress in honeycomb ceramics 21, but also cause high-temp waste gas to pass outlet pipe 8, flows to downstream.
Although the gateway end of DPF20 the temperature difference t3 of regeneration event incipient stage will be higher than the gateway end of the DPF of prior art the temperature difference t1 in the regeneration event incipient stage, temperature difference t3 is less than the gateway end of the DPF that adopts prior art at the temperature difference t2 of regeneration event ending phase.Therefore, reduced the peak heat stress in honeycomb ceramics 21.In addition, temperature difference t3 when regeneration event starts and finishes and Δ t4 are less than temperature difference t2, and this has also guaranteed the reduction of the thermal stress in honeycomb ceramics 21.
For optimizing the exact position of middle stopper 22M of regeneration and the specific design that quantity depends on DPF20, and the utility model be not limited in the middle of stopper 22 shown in distribution.
For example, although being illustrated on the single end face being represented by straight line Y-Y, all middle stopper 22M are arranged in rows, need not be necessarily like this, and in the middle of a part, stopper 22M can be than the entry end location of the more close honeycomb ceramics of stopper 22M in the middle of other.
In addition, although all middle stopper 22M are the outlet end stopper 22R being replaced by middle stopper 22M in runner 23 separately in the example shown, but need not be necessarily like this, middle stopper 22M may be the inlet end plugs 22F being replaced at runner 23 separately, or may be also the combination of replaced inlet end plugs 22F and outlet end stopper 22R.
Therefore, be summarized as follows, by some are positioned to the position that more soots distribute and are achieved near the entry end of honeycomb ceramics in order to seal the stopper of the runner in the honeycomb ceramics of diesel soot filter, inventor finds that the regeneration efficiency of particulate filter can be improved.
Although the utility model be take diesel soot filter as example is described, should be appreciated that, it is not limited to this application and under benefited prerequisite, is applied to be equipped with the petrol engine of particulate filter.
It should be appreciated by those skilled in the art, although the utility model is described with reference to one or more embodiments, but it is not limited to the disclosed embodiments, and can constructs alternate embodiment and not depart from the scope of the present utility model being limited by appended claims.
Claims (3)
1. the particulate filter for motor, it is characterized in that, described particulate filter comprises having entry end, the honeycomb ceramics of the porous inwall of outlet end and many waste gas runners of formation, and impel waste gas streams to cross described porous inwall and the stopper installed in predetermined runner, wherein, described particulate filter comprises the stopper of the entry end that is positioned at described honeycomb ceramics, at the stopper of the outlet end of described honeycomb ceramics and for improving the regeneration efficiency of described particulate filter, be installed on the outlet end of described honeycomb ceramics and the neutral position between entry end to increase by the stopper of the described porous amount of soot that inwall is caught of the entry end near described honeycomb ceramics, and middle stopper is the outlet end stopper that is repositioned to the entry end of more close described honeycomb ceramics.
2. particulate filter according to claim 1, is characterized in that, described middle stopper is towards the entry end location of described honeycomb ceramics.
3. have motor and a Motor Vehicle that is arranged to receive from described motor the particulate filter of waste gas streams, it is characterized in that, described particulate filter is particulate filter according to claim 1 and 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1217949.5A GB2506677A (en) | 2012-10-08 | 2012-10-08 | Honeycomb particulate filter with intermediate plugs |
| GB1217949.5 | 2012-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532009U true CN203532009U (en) | 2014-04-09 |
Family
ID=47294398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320605734.3U Expired - Fee Related CN203532009U (en) | 2012-10-08 | 2013-09-25 | Particle filter and motor vehicle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN203532009U (en) |
| DE (1) | DE102013111070A1 (en) |
| GB (2) | GB2506677A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017218663B3 (en) | 2017-10-19 | 2019-01-17 | Audi Ag | particulate Filter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928010A (en) * | 1982-08-05 | 1984-02-14 | Nippon Denso Co Ltd | Structure to purify exhaust gas |
| DE3501182A1 (en) * | 1985-01-16 | 1986-07-17 | Daimler-Benz Ag, 7000 Stuttgart | EXHAUST FILTER FOR DIESEL ENGINES |
| US6673414B2 (en) * | 2000-12-20 | 2004-01-06 | Corning Incorporated | Diesel particulate filters |
| US6544310B2 (en) * | 2001-05-24 | 2003-04-08 | Fleetguard, Inc. | Exhaust aftertreatment filter with particulate distribution pattern |
| US7107763B2 (en) * | 2002-03-29 | 2006-09-19 | Hitachi Metals, Ltd. | Ceramic honeycomb filter and exhaust gas-cleaning method |
| JP2006326586A (en) * | 2002-03-29 | 2006-12-07 | Hitachi Metals Ltd | Ceramic honeycomb filter and exhaust gas-cleaning method |
| EP1679109B1 (en) | 2003-09-29 | 2013-11-06 | Hitachi Metals, Ltd. | Ceramic honeycomb filter and method for production thereof, and sealing material for ceramic honeycomb filter |
| EP1693554A4 (en) * | 2003-11-06 | 2009-09-16 | Hitachi Metals Ltd | Ceramic honeycomb filter, exhaust gas-purifying device, and exhaust gas-purifying method |
| KR20070095889A (en) * | 2004-12-22 | 2007-10-01 | 히타치 긴조쿠 가부시키가이샤 | Method for manufacturing honeycomb filter and honeycomb filter |
-
2012
- 2012-10-08 GB GB1217949.5A patent/GB2506677A/en not_active Withdrawn
-
2013
- 2013-09-25 CN CN201320605734.3U patent/CN203532009U/en not_active Expired - Fee Related
- 2013-09-30 GB GB1317235.8A patent/GB2508485B/en not_active Expired - Fee Related
- 2013-10-07 DE DE102013111070.3A patent/DE102013111070A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB2506677A (en) | 2014-04-09 |
| GB201317235D0 (en) | 2013-11-13 |
| GB201217949D0 (en) | 2012-11-21 |
| DE102013111070A1 (en) | 2014-04-10 |
| GB2508485A (en) | 2014-06-04 |
| GB2508485B (en) | 2018-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20200925 |