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WO2006095146A1 - Procede et appareil pour la regeneration d'un filtre a particules - Google Patents

Procede et appareil pour la regeneration d'un filtre a particules Download PDF

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Publication number
WO2006095146A1
WO2006095146A1 PCT/GB2006/000771 GB2006000771W WO2006095146A1 WO 2006095146 A1 WO2006095146 A1 WO 2006095146A1 GB 2006000771 W GB2006000771 W GB 2006000771W WO 2006095146 A1 WO2006095146 A1 WO 2006095146A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
soot
heater
filter element
exhaust
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.)
Ceased
Application number
PCT/GB2006/000771
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English (en)
Inventor
Paul Joseph Richards
Matthew William Vincent
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.)
Innospec Ltd
Original Assignee
Innospec Ltd
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 Innospec Ltd filed Critical Innospec Ltd
Publication of WO2006095146A1 publication Critical patent/WO2006095146A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—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
    • F01N3/027—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 electric or magnetic heating means
    • F01N3/0275—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 electric or magnetic heating means using electric discharge means
    • 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
    • F01N3/027—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 electric or magnetic heating means
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/04—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by adding non-fuel substances to combustion air or fuel, e.g. additives
    • 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
    • F01N3/029—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 by adding non-fuel substances to exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
    • F02M27/02—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by catalysts

Definitions

  • the present invention provides a system for regenerating a particulate filter fitted to the exhaust of a combustion engine.
  • Fuel additives have also been proposed to inhibit the formation of or to aid the oxidation of the particulate, for example Lahaya et al. ("Metallic Additives in Soot
  • the major problem with filter systems is disposal of the trapped particulate. If the correct conditions can be generated then the particulate will oxidise, i.e. it will be burned off and the filter is said to be regenerated. If these conditions occur naturally under normal driving conditions then the filter regeneration is said to be passive.
  • CRT® Continuously Regenerating Trap
  • Cooper et al. Treatment of Diesel exhaust gases
  • US Patent 4,902,487 (1990) A pre- catalyst is employed to generate nitrogen dioxide which then acts as an oxidising agent to oxidise the trapped soot.
  • this type of system is limited in application due to the requirements to have the ratio of oxides of nitrogen to soot within a given range and to have the operating temperature above a prescribed level for a high proportion of the operating time, as outlined by Bandy and Lyons ("Practical Application of Continuously Regenerating Diesel Particulate Filter Systems in City Bus Applications” Mi ⁇ dzynarodowa Konferencja DEXFIL, Krakow, May 2004). See also DE-A-100 62 956.
  • a second example is to apply a wash coat and catalyst directly onto the filter medium as proposed by Mayer et al. ("Passive Regeneration of Catalyst Coated Knitted Fiber Diesel Particulate Traps" Warrendale, SAE., 1996 paper number SAE 960138). Because the catalyst is effectively downstream of the accumulated soot the effectiveness of the NO 2 produced in oxidising the soot is significantly reduced. The catalyst will however lower the temperature of the carbon-oxygen oxidation reaction. The limitation of this approach is again the amount of time that must be spent with the exhaust gas temperature above a certain level. See also EP-A-I 262 641
  • a third example places the catalyst directly in the accumulated soot. This is accomplished by introducing the catalyst into the combustion process via the fuel, either as a catalyst or as a catalyst precursor as proposed by Martin and Herrier ("Efficiency of fuel additives on diesel particulate trap regeneration” Presented at Institution of Mechanical Engineers Seminar, “Fuels for Automotive and Industrial Engines", 19-20 November 1990, IMechE Seminar 1990-8, pp.77-84). See also, Vincent et al. WO 99/36488. Careful design of the fuel borne catalyst (FBC) ensures that there is no increase in secondary emission. Use of FBC means that the catalytic substances are continually being replenished; this approach is thus particularly insensitive to the sulphur concentration in the fuel. Such a system allows prolonged operation at conditions that are unfavourable to regeneration of the filter with periodic excursions to favourable conditions promoting a rapid regeneration of the filter. This periodic regeneration behaviour does however result in a higher average exhaust back pressure being experienced by the engine.
  • Martin and Herrier Effective design of the fuel borne catalyst (FBC
  • the bulk temperature of the filter can be raised by electrical heating as proposed by Shirk et al. ("Fiber Wound Electrically Regenerable Diesel Particulate Filter Cartridge for Small Diesel Engines” Warrendale, SAE, 1995 paper number SAE 950153). See also EP-A-O 367 587 in which many heating elements pass through a filter of stainless steel wire mesh and stainless steel felt.
  • the temperature of the incoming gas can be raised using a burner as proposed by Okazoe et al. ("Development of a Full-Flow Burner Regeneration Type Diesel Particulate Filter Using SiC Honeycomb" Warrendale, SAE., 1996 paper number SAE 960130).
  • the energy requirements of such systems are understandably high. These can be reduced by combining these active systems with techniques otherwise used to bring about passive regeneration as outlined by Luders et al. ("Applications for the Regeneration of Diesel Particulate Traps by Combining Different Regeneration Systems" Warrendale, SAE, 1997 paper number 970470).
  • the in-cylinder combustion process can be altered to raise the exhaust gas temperature and/or to deliver unburned fuel into the exhaust gas stream.
  • This fuel can then be oxidised over a strong oxidising catalyst to further raise the exhaust gas temperature.
  • Seguelong et al. Passenger Car Series Application of a New Diesel Particulate Filter System Using a New Ceria-Based Fuel-Borne Catalyst: From the Engine Test Bench to European Vehicle Certification" Warrendale, SAE, 2002 paper number 2002-01-2781
  • the energy requirement for regenerating the filter is reduced by use of a fuel borne catalyst.
  • the temperature of the gas leaving the combustion chamber can be raised in other ways, well known to those skilled in the art, for example by throttling the intake air as described by Mayer et al. ("Engine Intake Throttling for Active Regeneration of Diesel Particle Filters" Warrendale, SAE 5 2003 paper number 2003-01-0381).
  • the increased pumping losses of such a system again potentially impose a measurable deterioration in fuel economy.
  • EP 1 520 964 regenerates a filter by supplying to the filter a regeneration fluid composed of diesel fuel and platinum atoms, and heating the filter using an external heater which heats the exhaust gas to regenerate the filter.
  • the prior art arrangements use fuel to raise the temperature of the filter to regenerate, or otherwise heat the filter by for example electrical heaters. Such arrangements are wasteful of energy whether it is derived directly from the fuel or indirectly by use of electrical heaters.
  • the present invention seeks to regenerate a filter using a small amount of energy.
  • the present invention provides a process of regenerating a particulate filter, the filter comprising a filter element in which soot from an exhaust of a combustion engine is trapped, the process comprising heating at least one localised surface area of the filter element to initiate in the, or each, localised surface area an exothermic oxidation of the soot which by virtue of its exothermic nature self- propagates from the or each area throughout the filter element.
  • the or each localised surface area is on the inlet face of the filter element.
  • the present invention provides a filter comprising a housing having an inlet for receiving exhaust gas from a combustion engine, an outlet, a filter element for trapping soot generated by the engine; and at least one heater arranged to heat a respective localised surface area of the filter element to initiate in that area an exothermic oxidation of the soot in that area, which self-propagates throughout the filter element to regenerate the filter.
  • the at least one heater is arranged to heat only a respective localised surface area of the inlet face, or accumulated soot thereat, of the filter.
  • the present invention is for use with a combustion engine.
  • the engine is optionally operated with a fuel that has been treated with a fuel borne catalyst thus producing exhaust gas that contains an intimate mixture of catalyst and soot particles. Exhaust gas is then forced to pass through the particulate filter which collects this soot/catalyst mixture.
  • a heating device provides localised favourable conditions for the oxidation of soot accumulated in the particulate filter.
  • the heating device may be placed in close proximity to a point on the inlet face of the filter. Actuating the heating device provides locally favourable conditions (increased temperature conditions) necessary to promote the oxidation and combustion of the trapped soot (and optional catalyst mixture).
  • the invention makes no attempt to increase the bulk gas temperature in order to ensure regeneration nor does it attempt to raise the bulk temperature of the filter medium in order to secure regeneration nor does it attempt to alter the composition of the gas passing through the filter.
  • the present invention differs from the prior art in that it endeavours to initiate regeneration in a very limited portion of the filter and relies on the oxidation of the soot optionally enhanced by the presence of a catalyst intimately mixed and dispersed throughout the trapped soot mass, in order to propagate and sustain the regeneration within the rest of the filter.
  • the heater(s) which initiate regeneration initiate it only on the surface of the filter or the accumulated soot in the very small surface areas.
  • the invention uses a very small amount of energy to regenerate the filter.
  • the present invention provides and utilises means for providing localised favourable conditions for the oxidation of soot accumulated in the particulate filter. This is referred to herein as providing means.
  • the means providing favourable oxidation conditions is a heating device.
  • the heating device may be any suitable heating device.
  • the heating device is an electrical heating device. It will be appreciated that one or more electrical heating devices may be provided.
  • the electrical heating device is at least one glow-plug. It will be appreciated that one or more glow-plugs may be provided. However in one aspect the electrical heating device is a single glow plug.
  • the means providing favourable oxidation conditions provides a flame. It will be understood that by the term "a flame" one or more flames are encompassed. In one aspect the flame is produced by at least one flame plug. It will be appreciated that one or more flame-plugs may be provided. However in one aspect the flame is produced by a single flame plug.
  • the means providing favourable oxidation conditions provides a spark. It will be understood that by the term "a spark" one or more sparks are encompassed. In one aspect the spark is produced by at least one spark plug. It will be appreciated that one or more spark plugs may be provided. However in one aspect the spark is produced by a single spark plug.
  • the present invention provides and utilises a means for controlling the initiation of regeneration.
  • a system including a filter according to the invention additionally comprises an electronic control unit for controlling initiation of regeneration.
  • the electronic control unit may monitor any number of different inputs such as temperature, pressure, differential pressure and/or time.
  • the electronic control unit comprises means for monitoring exhaust back pressure.
  • the electronic control unit is arranged to activate the providing means in dependence upon exhaust back pressure.
  • the electronic control unit is arranged to activate the providing means only in dependence upon exhaust back pressure.
  • the electronic control unit is arranged to activate the providing means in dependence upon time.
  • the electronic control unit is arranged to activate the providing means only in dependence upon time.
  • the electronic control unit is arranged to activate the providing means at intervals of from 5-100 hours, preferably from 8 to 50 hours or preferably from 10 to 20 hours.
  • the electronic control unit has means for monitoring exhaust temperature. In one aspect the electronic control unit is arranged to activate the providing means in dependence upon exhaust temperature.
  • the electronic control unit is arranged to activate the providing means in dependence upon time and exhaust back pressure. In one aspect the electronic control unit is arranged to activate the providing means in dependence upon time and exhaust temperature. In one aspect the electronic control unit is arranged to activate the providing means in dependence upon exhaust back pressure and exhaust temperature.
  • the electronic control unit is arranged to activate the providing means in dependence upon time, exhaust back pressure and exhaust temperature
  • the system for initiating the regeneration of a particulate filter of the present invention is for use with a particulate filter suitable for entrapment of soot from an exhaust of a combustion engine.
  • the system may be used with multiple exhausts.
  • more than one exhaust may feed to a single particulate filter.
  • This single particulate filter may be used with the present system.
  • multiple exhausts may feed to separate particulate filters.
  • Each of the filters may comprise a means for providing localised favourable conditions for the oxidation of soot accumulated in that particulate filter.
  • the system may then comprise a single control unit for activating the providing means or the system may comprise multiple control units for actuating each providing means.
  • system in its broadest aspect is suitable for use with a particulate filter but may be manufactured and supplied without the particulate filter.
  • system of the invention further comprises a particulate filter.
  • the particulate filter for use in or with the present system may be any suitable filter.
  • the particulate filter is a ceramic honeycomb structure.
  • the ceramic is a silicon based compound.
  • the silicon compound is silicon-carbide.
  • the particulate filter is constructed of ceramic fibres Preferably the ceramic fibres are woven.
  • the particulate filter is constructed of porous metal elements.
  • the particulate filter is constructed of metal fibres.
  • the filter may have a catalytic coating for reducing emissions.
  • the catalytic coating may reduce NOx emissions.
  • the coating may reduce emissions of carbon monoxide.
  • the system is suitable for use with, and may be combined with, a combustion engine.
  • the engine may be an internal combustion engine.
  • the engine may be a compression ignition engine.
  • the engine may be, for example, a gas turbine engine having an exhaust.
  • the combuster of such an engine may be regarded as being external to the engine.
  • the system is preferably used with an engine operated with a fuel that has been treated with a fuel borne catalyst thus producing exhaust gas that contains an intimate mixture of catalyst and soot particles. Exhaust gas is then forced to pass through a filter which collects this soot/catalyst mixture.
  • Means (such as a heating device) are provided for generating localised favourable conditions for the oxidation of soot.
  • the exotherm resulting from combustion of the soot in this locality promotes the oxidation and combustion of adjacent soot on the surface and in adjacent channels of the filter medium. Heat produced by the further oxidation and combustion of amounts of catalysed soot thus propagates the oxidation of the soot within the remainder of the filter.
  • the filter is thus regenerated.
  • the soot is formed from combustion of a fuel composition comprising a fuel and a catalyst or a catalyst precursor.
  • the fuel borne catalyst catalyses the oxidation of the soot.
  • the catalyst or a catalyst precursor is combined with the fuel prior to combustion.
  • the catalyst or catalyst precursor is or comprises a metal.
  • the metal is selected from iron, strontium, calcium, cerium, sodium, platinum, copper, manganese and mixtures thereof. More preferably the metal is a mixture of iron and strontium or the metal is iron.
  • the metal is in the form of a fuel soluble organo-metallic compound.
  • the metal is in the form of nano-particles of a non fuel soluble compound.
  • the catalyst may be delivered to the fuel by any suitable means.
  • the catalyst is aspirated into the engine's induction air.
  • the metal is in the form of a volatile organo-metallic compound.
  • the metal is in the form of nano-particles of a non- volatile compound.
  • the catalyst is a catalyst as described in any one of WO 01/16257, WO 02/18398, WO 03/020733, WO 2004/055136 and GB 0405282.5.
  • the catalyst is delivered in the manner described in WO 02/097256.
  • Figure 1 is a graph showing a variation of exhaust back pressure over time, with regeneration of a filter after 28 days;
  • Figure 2 is a schematic diagram of an example of a filter in accordance with the invention.
  • Figure 3 is a graph showing variation of exhaust back pressure and filter temperature in a time window during which a filter is regenerated
  • Figure 4 is another graph showing variation of exhaust back pressure over time of a filter operated in accordance with the invention
  • Figure 5 is a schematic cross-sectional view of another example of a filter in accordance with the invention.
  • Figure 6 is a schematic block diagram of a control system for the filter of Figure 2 or
  • FIG. 7 is a schematic diagram of an example of an engine, exhaust, filter and control system in accordance with the invention.
  • the dosing system was used to treat the vehicle's fuel with Octel OctimaxTM 4810A 5 a fuel borne catalyst with iron and strontium as the metallic elements.
  • the filter described above is, in accordance with an embodiment of the invention, replaced by a filter as shown in Figure 2.
  • the filter has a housing having an inlet canning 2 and a filter element 5 between the inlet canning and an outlet canning 6.
  • the exhaust gas enters through an inlet pipe 1 in Figure 2, into the new inlet canning 2 of the housing.
  • This inlet canning is fitted with a Bosch Duraterm 0250201034 glow plug 3 in Figure 2; this is positioned close to, but spaced from, the inlet face of the filter element 5 in Figure 2.
  • the glow plug 3 is energised via an electrical cable 4 in Figure 2.
  • the electrical current to operate the glow plug 3 is switched, by for example a relay, that is controlled by an electronic control unit as will be described in more detail with respect to Figure 6 below.
  • the clean exhaust gas exits the filter element 5 into an outlet canning 6 of the housing and finally through an outlet pipe 7.
  • the level of exhaust back pressure is used by the electronic control unit to determine the point at which the glow plug 3 should be activated.
  • the glow plug 3 heats the filter element only in a small localised surface area of the inlet face immediately adjacent the plug, not the bulk of the filter element 5 as in the active regeneration systems of the prior art. It has been found that initiating regeneration in that small localised area is sufficient to generate an exotherm which propagates regeneration throughout the filter element without the need to otherwise heat the filter element.
  • the glow plug 3 may accumulate soot therein during operation of the engine before regeneration of the filter.
  • the soot on the glow plug may aid regeneration by burning when heated and so initiating regeneration.
  • the glow plug 3 is spaced from the face of the filter to prevent vibration causing wear on the plug and filter. If the filter is of ceramic the filter might abrade. The glow plug could be in contact with the face of the filter.
  • FIG. 3 is a graph showing variation of filter temperature and exhaust back pressure with time during a window of 12 minutes during which regeneration of the filter takes place during the time the glow plug is activated in a period labelled P. It can be seen from this figure that at approximately 6 minutes the exhaust back pressure exceeds 300 mbar and at 7.0 minutes the glow plug is activated. The time when the glow plug is energised is indicated by the period P in Figure 3. As a result of the glow plug being energised the oxidation of the trapped soot is initiated in a localised area immediately adjacent the glow plug 3.
  • an alternative filter having an inlet pipe 1, inlet canning 2,a filter element 5, outlet canning 6 and an outlet pipe 7, substantially the same as the filter of Figure 2.
  • the heaters are for example glow plugs.
  • the heaters are parallel to, but spaced by distance D from, the inlet face 51 of the filter element 5.
  • the heaters heat small localised surface areas of the inlet face of the filter element.
  • Distance D is for example 1 to 2mm. The spacing is to prevent wear of the plug and filter as discussed above with reference to Figure 2.
  • the heaters may be in contact with the filter element.
  • a filter F which maybe as shown in Figure 5 has two heaters, for example glow plugs 3 a, 3 b connected by cables 4a and 4b to a power supply 12 which supplies heating current to the heaters under the control of an Electronic Control Unit (ECU) 10.
  • the ECU 10 operates according to an algorithm which controls the times at which the heaters are energised by the power supply in dependence on one or more parameters.
  • These parameters include: a) exhaust back pressure measured by a back pressure sensor 14 which in use is placed at the inlet to the filter F; b) time, measured by a timer 16 which may be embedded in the ECU 10, which initiates regeneration of the filter at preset time intervals; and/or c) one or more other parameters for example filter temperature and/or exhaust gas temperature.
  • the filter F of Figure 6 which is for example the filter of Figure 5 may be replaced by the filter of Figure 2.
  • an engine 80 which, in this example, is a compression ignition engine has a fuel supply 88 to which fuel borne catalyst is supplied by a dosing system 86.
  • the exhaust 82, 84 of the engine is connected to a filter F and control system as shown in Figure 6.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un procédé et un appareil pour lancer la régénération d'un filtre à particules (5). Ce filtre à particules est conçu pour piéger la suie provenant de l'échappement d'un moteur à combustion. Cet appareil comprend un moyen (3, 4) pour envoyer de la chaleur localisée pour l'oxydation autopropagée de la suie accumulée dans le filtre à particules et un moyen d'activation de celui-ci.
PCT/GB2006/000771 2005-03-08 2006-03-06 Procede et appareil pour la regeneration d'un filtre a particules Ceased WO2006095146A1 (fr)

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Application Number Priority Date Filing Date Title
GB0504771.7 2005-03-08
GB0504771A GB0504771D0 (en) 2005-03-08 2005-03-08 System

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WO2006095146A1 true WO2006095146A1 (fr) 2006-09-14

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010016077A1 (fr) * 2008-08-08 2010-02-11 Pirelli & C. Eco Technology S.P.A. Procédé et dispositif pour commander la régénération d'un filtre à particules
WO2015184367A1 (fr) * 2014-05-29 2015-12-03 Advanced Green Technologies, Llc Procédé pour faire fonctionner un moteur sans papillon avec collecte de carbone
US9284191B2 (en) 2013-03-15 2016-03-15 Mcalister Technologies, Llc Carbon-based manufacturing of fiber and graphene materials
PL243930B1 (pl) * 2020-10-29 2023-10-30 Przed Innowacyjno Wdrozeniowe Ekomotor Spolka Z Ograniczona Odpowiedzialnoscia Sposób regeneracji filtra cząstek stałych

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370419A (en) * 1965-06-11 1968-02-27 Ketzer Paul Augustin Albert Device for purification of the exhaust gases of internal combustion engines
DE3542996A1 (de) * 1984-12-12 1986-06-12 Volkswagen AG, 3180 Wolfsburg Vorrichtung zum regenerieren eines russfilters, insbesondere im abgassystem einer diesel-brennkraftmaschine
WO1993017229A1 (fr) * 1992-02-25 1993-09-02 Blue Planet Technologies Co. L.P. Systeme catalytique
FR2771449A1 (fr) * 1997-11-24 1999-05-28 Ecia Equip Composants Ind Auto Procede et dispositif de regeneration d'un filtre a particules
EP0990777A1 (fr) * 1998-09-30 2000-04-05 Ibiden Co, Ltd. Système de régénération pour dispositif d'épuration de gaz d'échappement
FR2800418A1 (fr) * 1999-11-03 2001-05-04 Renault Dispositif de regeneration et systeme de depollution le comprenant
WO2003067048A1 (fr) * 2002-02-05 2003-08-14 Saint-Gobain Centre De Recherches Et D'etudes Europeen Procede de gestion de moyens de decolmatage d'un filtre a particules.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370419A (en) * 1965-06-11 1968-02-27 Ketzer Paul Augustin Albert Device for purification of the exhaust gases of internal combustion engines
DE3542996A1 (de) * 1984-12-12 1986-06-12 Volkswagen AG, 3180 Wolfsburg Vorrichtung zum regenerieren eines russfilters, insbesondere im abgassystem einer diesel-brennkraftmaschine
WO1993017229A1 (fr) * 1992-02-25 1993-09-02 Blue Planet Technologies Co. L.P. Systeme catalytique
FR2771449A1 (fr) * 1997-11-24 1999-05-28 Ecia Equip Composants Ind Auto Procede et dispositif de regeneration d'un filtre a particules
EP0990777A1 (fr) * 1998-09-30 2000-04-05 Ibiden Co, Ltd. Système de régénération pour dispositif d'épuration de gaz d'échappement
FR2800418A1 (fr) * 1999-11-03 2001-05-04 Renault Dispositif de regeneration et systeme de depollution le comprenant
WO2003067048A1 (fr) * 2002-02-05 2003-08-14 Saint-Gobain Centre De Recherches Et D'etudes Europeen Procede de gestion de moyens de decolmatage d'un filtre a particules.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010016077A1 (fr) * 2008-08-08 2010-02-11 Pirelli & C. Eco Technology S.P.A. Procédé et dispositif pour commander la régénération d'un filtre à particules
US8584446B2 (en) 2008-08-08 2013-11-19 Pirelli & C. Eco Technology S.P.A. Method and device for controlling the regeneration of a particulate filter
US8650861B2 (en) 2008-08-08 2014-02-18 Pirelli & C. Eco Technology S.P.A. Control of the regeneration of a particulate filter
US9284191B2 (en) 2013-03-15 2016-03-15 Mcalister Technologies, Llc Carbon-based manufacturing of fiber and graphene materials
WO2015184367A1 (fr) * 2014-05-29 2015-12-03 Advanced Green Technologies, Llc Procédé pour faire fonctionner un moteur sans papillon avec collecte de carbone
PL243930B1 (pl) * 2020-10-29 2023-10-30 Przed Innowacyjno Wdrozeniowe Ekomotor Spolka Z Ograniczona Odpowiedzialnoscia Sposób regeneracji filtra cząstek stałych

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