WO2013005339A1 - Dispositif d'épuration de l'échappement pour moteur à combustion interne - Google Patents

Dispositif d'épuration de l'échappement pour moteur à combustion interne Download PDF

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Publication number
WO2013005339A1
WO2013005339A1 PCT/JP2011/065638 JP2011065638W WO2013005339A1 WO 2013005339 A1 WO2013005339 A1 WO 2013005339A1 JP 2011065638 W JP2011065638 W JP 2011065638W WO 2013005339 A1 WO2013005339 A1 WO 2013005339A1
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WO
WIPO (PCT)
Prior art keywords
dpf
ash
regeneration operation
internal combustion
combustion engine
Prior art date
Application number
PCT/JP2011/065638
Other languages
English (en)
Japanese (ja)
Inventor
克彦 押川
中山　茂樹
優一 祖父江
寛真 西岡
大地 今井
佳久 塚本
寛 大月
潤一 松尾
菅原　康
Original Assignee
トヨタ自動車株式会社
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 トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to PCT/JP2011/065638 priority Critical patent/WO2013005339A1/fr
Priority to EP12741115.5A priority patent/EP2726176A2/fr
Priority to US14/126,997 priority patent/US9057299B2/en
Priority to PCT/JP2012/067408 priority patent/WO2013005853A2/fr
Priority to CN201280031454.4A priority patent/CN103619439B/zh
Priority to CN201280031461.4A priority patent/CN103619440B/zh
Priority to PCT/JP2012/067407 priority patent/WO2013005852A1/fr
Priority to EP12741116.3A priority patent/EP2726177B1/fr
Priority to EP12738240.6A priority patent/EP2726173B1/fr
Priority to PCT/JP2012/067405 priority patent/WO2013005850A2/fr
Priority to JP2013555681A priority patent/JP5626487B2/ja
Priority to PCT/JP2012/067404 priority patent/WO2013005849A1/fr
Priority to EP12738239.8A priority patent/EP2726172B1/fr
Priority to JP2013555657A priority patent/JP2014520227A/ja
Priority to JP2013555656A priority patent/JP5655961B2/ja
Priority to US14/127,355 priority patent/US9080480B2/en
Priority to US14/126,947 priority patent/US9057298B2/en
Priority to CN201280032271.4A priority patent/CN103635245B/zh
Priority to CN201280031473.7A priority patent/CN103619441B/zh
Priority to JP2014514345A priority patent/JP2014520229A/ja
Priority to US14/110,811 priority patent/US8778053B2/en
Priority to US14/126,904 priority patent/US9011569B2/en
Priority to JP2013535609A priority patent/JP5494893B2/ja
Priority to PCT/JP2012/067406 priority patent/WO2013005851A2/fr
Priority to EP12741114.8A priority patent/EP2726175B1/fr
Priority to CN201280030742.8A priority patent/CN103619438B/zh
Publication of WO2013005339A1 publication Critical patent/WO2013005339A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • 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
    • F01N3/0232—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 removing incombustible material from a particle filter, e.g. ash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/70—Non-metallic catalysts, additives or dopants
    • B01D2255/707—Additives or dopants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/915—Catalyst supported on particulate filters
    • B01D2255/9155—Wall flow 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure

Definitions

  • the present invention relates to an exhaust purification device for an internal combustion engine.
  • a diesel particulate filter (hereinafter referred to as “DPF”) is installed in the exhaust gas passage of the internal combustion engine, Generally, PM in exhaust gas is collected and removed.
  • PM regeneration since the PM collected in the DPF gradually accumulates, regeneration (hereinafter referred to as “PM regeneration”) is performed periodically or by detecting a decrease in the performance of the DPF and burning and removing the PM collected in the DPF. ”).
  • PM regeneration operation is usually performed by heating the DPF while supplying a reducing agent such as hydrocarbon (HC) to the DPF.
  • a reducing agent such as hydrocarbon (HC)
  • Ash is generated when the engine oil mixed in the cylinder of the engine burns, and the generated ash particles are covered with PM in the DPF.
  • the ash particles covered with PM are exposed to high temperature conditions during the PM regeneration operation in the DPF, and the PM covering the ash particles is burned and removed.
  • Ash deposition occurs because the ash particles are agglomerated and increased in size by further applying heat to the ash particles from which the PM has been burned and removed.
  • the improvement to the conventional DPF and the improvement to the regeneration operation of the DPF are intended to improve the collection efficiency of the DPF and improve the performance of the PM regeneration operation, and not to the accumulation of ash.
  • an invention disclosed in Patent Document 1 for example, there is an invention disclosed in Patent Document 1, and Patent Document 1 shows a configuration of a DPF capable of burning PM at a relatively low temperature. Yes.
  • the structure of the DPF disclosed in Patent Document 1 is characterized in that, in the DPF and the exhaust gas purification method using the DPF, a catalyst made of a solid superacid having an active metal supported on the DPF is held on the filter surface. is there.
  • Patent Document 1 reduces the combustion temperature of PM with a solid super strong acid carrying an active metal, and regenerates DPF at a lower temperature than before, preferably continuously, and CO, HC, NO, NO 2 can be removed at the same time.
  • Patent Document 1 is intended to improve the performance of the PM regeneration operation, and does not correspond to the accumulation of ash. If the use of the DPF is continued, the PM regeneration operation is performed. However, this does not solve the problem that the pressure loss of the DPF gradually increases, and unless the PM regeneration temperature is gradually increased, sufficient regeneration cannot be performed and the fuel consumption deteriorates.
  • Patent Document 2 which is selected from platinum, palladium and rhodium as a catalyst for a diesel engine exhaust gas purification device.
  • SOF Solid Organic Fraction
  • unburned hydrocarbons, etc. contained in particulate matter in diesel engine exhaust gas from a low temperature range.
  • the invention of Patent Document 2 aims at an effect similar to the invention of Patent Document 1 and does not relate to DPF.
  • JP 2006-289175 A Japanese Patent Laid-Open No. 10-033985
  • the present invention provides an exhaust emission control device for an internal combustion engine that can suppress the accumulation of ash on the DPF and suppress an increase in pressure loss, an increase in PM regeneration temperature, and a decrease in fuel consumption over a long period of time. It is aimed.
  • the present invention provides a configuration in which the ash deposited on the DPF is discharged with a reduced particle size, and the DPF is regenerated (hereinafter referred to as “ash regeneration”). It is an object of the present invention to provide an epoch-making DPF that has an advantageous effect of suppressing an increase in temperature and a decrease in fuel consumption.
  • the accumulated ash can be discharged with a reduced particle size.
  • a DPF that is smaller than the conventional DPF can be used from the beginning of the installation of the DPF. Not only cost reduction, but also energy cost of PM regeneration operation can be reduced.
  • the fact that a small DPF can be used means that the space for mounting the DPF on the vehicle can be reduced, and the weight of the vehicle on which the DPF is mounted can be reduced.
  • the inventor of the present application studied the problem of ash accumulation inside the DPF, analyzed the cause of ash accumulation, and the main components of ash were calcium (Ca) contained in engine oil and SOx in exhaust gas. It was found that ash is ion-bonded, CaSO 4 is the main component, and Ca salt has a high melting point, so that in the exhaust gas, ash flows into the DPF as a solid and aggregates to increase the particle size.
  • Ca calcium
  • the inventors of the present application have confirmed by experiments that the size of ash is on the order of submicrons, and that the ash slips through the DPF when the ash size is reduced to the order of nanomicrons.
  • Ca ions associated with stronger acid than SO 3 on the surface of the DPF is different from the stronger acid than SO 3 on the surface of the DPF, if a stronger acid is present in the atmosphere It was confirmed by an experiment that it binds to a stronger acid in the atmosphere, is released from the DPF, and passes through the DPF to be discharged.
  • the particle size will be submicron.
  • CaSO 4 deposited in the DPF turned into, in a reducing atmosphere becomes CaSO 3 SO 4 is reduced in CaSO 4
  • Ca ions CaSO 3 is bonded with the acid on the surface of the DPF, on the surface of the DPF Disperse in atomic form.
  • SO 4 is present in the atmosphere, the Ca on the surface of the DPF combines with the SO 4 in the atmosphere and becomes sub-nanometer-sized CaSO 4 and is released from the DPF.
  • the exhaust gas atmosphere is a stoichiometric or rich atmosphere, it is the above-described reducing atmosphere, and when it is a lean atmosphere, the lean atmosphere contains SO 4 . Therefore, if control for making the atmosphere stoichiometric or rich and control for making the lean atmosphere next are performed on the above-mentioned DPF, ash Ca ions deposited on the DPF in the stoichiometric or rich atmosphere are converted to DPF. Then, in a lean atmosphere, Ca on the surface of the DPF is combined with SO 4 in the lean atmosphere and released from the DPF, and the fine particle size is reduced to a sub-nanometer size. CaSO 4 is converted to pass through the DPF and discharged.
  • the first CaSO 4 having a large particle size of submicron and deposited on the DPF is finally released again from the DPF as CaSO 4.
  • No. 4 is reduced in size to a sub-nanometer size and passes through the DPF and is discharged.
  • the ash regeneration operation following the PM regeneration operation can be further effectively advanced.
  • the present invention provides an embodiment in which the PM regeneration operation performed prior to the ash regeneration operation is more effectively performed.
  • the ash when performing the PM regeneration operation prior to the ash regeneration operation, the ash is exposed to a reducing atmosphere, and if the ash comes into contact with the acid sites of the solid acid, the PM remains without being completely removed.
  • the ash regeneration operation following the PM regeneration operation may effectively proceed.
  • the ash is prevented from agglomerating and increasing the particle size in the PM regeneration operation. There is an effect that can be reduced.
  • OSC ability oxygen storage ability
  • Oxygen occluded in the solid acid by the OSC ability causes the oxygen concentration in the atmosphere near the ash to increase.
  • the ash reduction reaction that is, the transition from CaSO 4 to CaSO 3 is inhibited, and there is a problem that the ash decomposition rate is low.
  • the oxygen storage amount (OSC amount) of the solid acid to be used is obtained in advance by experiments or the like, and the map of PM emission amount according to the engine operating state, the exhaust gas amount and the DPF temperature are used. If a map of PM combustion speed is provided and control is performed so that only the amount of PM burned by the solid acid OSC amount remains in the PM regeneration operation, the oxygen is completely removed without finally remaining PM.
  • the reduction reaction of CaSO 4 having a large particle size can be effectively performed.
  • a means for injecting a reducing agent such as fuel into exhaust gas is generally used, but if the remaining PM is used as described above, The amount of reducing agent required can be reduced, and there is an effect that fuel efficiency is improved.
  • an exhaust purification device for an internal combustion engine in which a DPF is disposed in an exhaust system of the internal combustion engine, wherein the DPF is a DPF whose surface is coated with a solid acid,
  • the acid strength is larger than the acid strength of SO 3 and smaller than the acid strength of SO 4
  • an ash regeneration operation control that removes ash accumulated in the DPF.
  • the PM regeneration operation a predetermined amount of PM remains, and a predetermined amount of P There when remaining, and performs ash regeneration operation, the exhaust gas purification apparatus is provided for an internal combustion engine.
  • the PM regeneration operation is performed before the ash regeneration operation, the CaSO 4 having a large particle size that has been buried in the PM is exposed to the reducing atmosphere.
  • the ash reduced to CaSO 3 comes into contact with the solid acid on the surface of the DPF, and the ash regeneration operation following the PM regeneration operation proceeds effectively, but the ash is in a reducing atmosphere. If the ash comes into contact with the acid sites of the solid acid, the PM may remain in a state where the PM is not completely removed, so that a predetermined amount of PM is left in the PM regeneration operation.
  • the ash regeneration operation is performed when a predetermined amount of PM remains. If it does in this way, the heat energy in PM regeneration operation can be saved and fuel consumption can be improved.
  • the remaining PM prevents the ash from agglomerating and increasing the particle size, there is an effect that the frequency of the ash regeneration operation can be reduced.
  • the oxygen stored in the solid acid is consumed by the remaining PM, and the oxygen near the ash is inhibited from inhibiting the reduction reaction from CaSO4 to CaSO3. And the reduction of the ash decomposition rate can be suppressed. Since this means consumes oxygen using the remaining PM, there is no need to separately inject a reducing agent, which is effective in improving fuel consumption.
  • an exhaust gas purification apparatus for an internal combustion engine is provided in which ash is completely removed and an increase in pressure loss, an increase in PM regeneration temperature, and a decrease in fuel consumption can be suppressed over a long period of time.
  • the predetermined amount of PM remaining is an amount corresponding to the OSC amount of the solid acid.
  • an exhaust emission control device for an internal combustion engine that can completely remove ash in an ash regeneration operation and suppress an increase in pressure loss, an increase in PM regeneration temperature, and a decrease in fuel consumption over a long period of time.
  • an ash regeneration configuration is provided, and the ash is completely removed in the ash regeneration operation, and an increase in pressure loss, an increase in PM regeneration temperature, and a decrease in fuel consumption are suppressed over a long period of time.
  • the present invention provides a common effect of providing an exhaust gas purification device for an internal combustion engine.
  • FIG. 1 is a figure explaining control of PM reproduction
  • (b) is another embodiment of this invention, It is a figure explaining control of PM regeneration operation.
  • 2A and 2B are diagrams for explaining the principle of the present invention.
  • FIG. 2A is a diagram for explaining the state of ash during PM deposition.
  • FIG. 2B is a diagram showing a part of the amount of PM in the PM regeneration operation of the present invention. It is a figure explaining the state made to remain,
  • (c) is a figure explaining immediately after the start of the ash reproduction
  • FIG. 3 is a diagram illustrating a schematic configuration of the embodiment when the present invention is applied to a DPF.
  • FIG. 3 is a diagram showing a basic configuration of the present invention.
  • a solid acid corresponding to an acid strength of SO 3 or more and SO 4 or less is formed on the surface of DPF 2, specifically, on the surface of the DPF substrate of DPF 2.
  • Apply. The exhaust gas from the internal combustion engine is guided to the DPF 2, and the PM in the exhaust gas is collected and removed by the DPF 2, and the exhaust gas from which the PM has been removed is discharged. Since the PM collected in the DPF gradually accumulates, PM regeneration operation is performed periodically or by detecting a decrease in the performance of the DPF and burning and removing the PM collected in the DPF.
  • the reduced size particles 4 pass through the filter gap of the DPF and are discharged together with the exhaust.
  • the ash regeneration operation following the PM regeneration operation can be further effectively advanced.
  • FIG. 2 (a) is a diagram for explaining the presence state of ash before the present invention is applied to the DPF of the present invention.
  • the ash is in a state of CaSO 4 31 buried in the PM 10 deposited in the DPF. Therefore, in order for this even attempt to ash playback state, CaSO 4 31 deposited in the DPF with large grain size to the size of the sub-micron can not be in contact with a reducing atmosphere, CaSO 4 31 SO 4 in Is not reduced.
  • FIG. 1B shows a case where PM regeneration operation is performed so that all PM is burned and removed.
  • all PM is burned and removed as shown in FIG. 1B. without, as shown in FIG. 1 (a), performs PM regeneration operation just in time Z PM, the PM amount is left only R PM, the process proceeds to ash regeneration operation Z a.
  • FIG. 2B is a diagram for explaining a state in which a part of the PM amount remains in the PM regeneration operation as described above, and a part of PM10 remains around the CaSO 4 31.
  • CaSO 4 31 is reduced to a reducing atmosphere, for example, stoichiometric. Alternatively, it is reduced in an air-fuel ratio rich atmosphere to become CaSO 3 32, and then the ash regeneration operation proceeds.
  • a reducing atmosphere for example, stoichiometric.
  • it is reduced in an air-fuel ratio rich atmosphere to become CaSO 3 32, and then the ash regeneration operation proceeds.
  • the oxygen storage amount (OSC amount) of the solid acid to be used is obtained in advance by experiments or the like, and the map of the PM emission amount according to the engine operating state, the exhaust gas amount and the DPF temperature are set. It is preferable to prepare a map of the corresponding PM combustion speed, etc. so that only the amount of PM burned by the solid acid OSC amount remains in the PM regeneration operation. By controlling in this way, it is possible to effectively carry out the reduction reaction of CaSO 4 having a large particle size, with no PM remaining finally and oxygen being completely removed.

Abstract

L'invention concerne un dispositif d'épuration de l'échappement pour un moteur à combustion interne ayant un DPF (filtre à particules diesel) disposé dans un système d'échappement du moteur à combustion interne, dans lequel l'accumulation de cendres dans le DPF est réduite au minimum, en permettant de réduire au minimum les accroissements de la perte de pression, les accroissements de la température de régénération de la matière particulaire, et les réductions de la consommation de carburant sur une longue période. Dans le DPF, qui est revêtu d'un acide solide, dont l'acidité, sur la surface du DPF, est supérieure à l'acidité du SO3 mais inférieure à l'acidité du SO4, une opération de récupération de la matière particulaire est exécutée avant une opération de régénération des cendres après avoir laissé une quantité prescrite de matière particulaire rester dans l'opération de régénération de matière particulaire.
PCT/JP2011/065638 2011-07-01 2011-07-01 Dispositif d'épuration de l'échappement pour moteur à combustion interne WO2013005339A1 (fr)

Priority Applications (26)

Application Number Priority Date Filing Date Title
PCT/JP2011/065638 WO2013005339A1 (fr) 2011-07-01 2011-07-01 Dispositif d'épuration de l'échappement pour moteur à combustion interne
EP12741115.5A EP2726176A2 (fr) 2011-07-01 2012-06-29 Système d'épuration des gaz d'échappement d'un moteur à combustion interne
US14/126,997 US9057299B2 (en) 2011-07-01 2012-06-29 Exhaust purification system for internal combustion engine
PCT/JP2012/067408 WO2013005853A2 (fr) 2011-07-01 2012-06-29 Procédé pour retirer les poussières d'un filtre à particules
CN201280031454.4A CN103619439B (zh) 2011-07-01 2012-06-29 用于内燃机的排气净化***
CN201280031461.4A CN103619440B (zh) 2011-07-01 2012-06-29 用于内燃机的排气净化***
PCT/JP2012/067407 WO2013005852A1 (fr) 2011-07-01 2012-06-29 Filtre à particules
EP12741116.3A EP2726177B1 (fr) 2011-07-01 2012-06-29 Système d'épuration des gaz d'échappement d'un moteur à combustion interne
EP12738240.6A EP2726173B1 (fr) 2011-07-01 2012-06-29 Procédé pour retirer les poussières d'un filtre à particules
PCT/JP2012/067405 WO2013005850A2 (fr) 2011-07-01 2012-06-29 Système d'épuration des gaz d'échappement d'un moteur à combustion interne
JP2013555681A JP5626487B2 (ja) 2011-07-01 2012-06-29 パティキュレートフィルタ
PCT/JP2012/067404 WO2013005849A1 (fr) 2011-07-01 2012-06-29 Système d'épuration des gaz d'échappement d'un moteur à combustion interne
EP12738239.8A EP2726172B1 (fr) 2011-07-01 2012-06-29 Filtre à particules
JP2013555657A JP2014520227A (ja) 2011-07-01 2012-06-29 内燃機関の排気浄化装置
JP2013555656A JP5655961B2 (ja) 2011-07-01 2012-06-29 内燃機関の排気浄化装置
US14/127,355 US9080480B2 (en) 2011-07-01 2012-06-29 Exhaust purification system for internal combustion engine
US14/126,947 US9057298B2 (en) 2011-07-01 2012-06-29 Exhaust purification system for internal combustion engine
CN201280032271.4A CN103635245B (zh) 2011-07-01 2012-06-29 颗粒过滤器
CN201280031473.7A CN103619441B (zh) 2011-07-01 2012-06-29 用于内燃机的排气净化***
JP2014514345A JP2014520229A (ja) 2011-07-01 2012-06-29 内燃機関の排気浄化装置
US14/110,811 US8778053B2 (en) 2011-07-01 2012-06-29 Method of removing ash from particulate filter
US14/126,904 US9011569B2 (en) 2011-07-01 2012-06-29 Particulate filter
JP2013535609A JP5494893B2 (ja) 2011-07-01 2012-06-29 パティキュレートフィルタからアッシュを除去する方法
PCT/JP2012/067406 WO2013005851A2 (fr) 2011-07-01 2012-06-29 Système d'épuration des gaz d'échappement d'un moteur à combustion interne
EP12741114.8A EP2726175B1 (fr) 2011-07-01 2012-06-29 Système d'épuration des gaz d'échappement d'un moteur à combustion interne
CN201280030742.8A CN103619438B (zh) 2011-07-01 2012-06-29 从颗粒过滤器去除灰分的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/065638 WO2013005339A1 (fr) 2011-07-01 2011-07-01 Dispositif d'épuration de l'échappement pour moteur à combustion interne

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JPH1054268A (ja) * 1996-08-08 1998-02-24 Toyota Motor Corp ディーゼル機関の排気浄化装置
JP2004513771A (ja) * 2001-05-16 2004-05-13 ケイエイチ　ケミカルズ　カンパニー、リミテッド ディーゼルエンジン排気ガスの浄化用触媒
JP2006255539A (ja) * 2005-03-15 2006-09-28 Toyota Motor Corp 排ガス浄化装置

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Publication number Priority date Publication date Assignee Title
JPH1054268A (ja) * 1996-08-08 1998-02-24 Toyota Motor Corp ディーゼル機関の排気浄化装置
JP2004513771A (ja) * 2001-05-16 2004-05-13 ケイエイチ　ケミカルズ　カンパニー、リミテッド ディーゼルエンジン排気ガスの浄化用触媒
JP2006255539A (ja) * 2005-03-15 2006-09-28 Toyota Motor Corp 排ガス浄化装置

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