WO2005056998A1 - 内燃機関システム - Google Patents
内燃機関システム Download PDFInfo
- Publication number
- WO2005056998A1 WO2005056998A1 PCT/JP2004/017484 JP2004017484W WO2005056998A1 WO 2005056998 A1 WO2005056998 A1 WO 2005056998A1 JP 2004017484 W JP2004017484 W JP 2004017484W WO 2005056998 A1 WO2005056998 A1 WO 2005056998A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- filter
- internal combustion
- combustion engine
- engine system
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
- F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
-
- 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
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
-
- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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
Definitions
- the present invention relates to an internal combustion engine system having an exhaust system with a filter for trapping particulates in exhaust gas exhausted from the internal combustion engine, and more particularly, to an internal combustion engine having a function of preventing damage to the filter About the system.
- Diesel engines which are a type of internal combustion engine, emit a large amount of particulate matter (PM) during combustion. Therefore, various filters (DPF: Diesel Particulate Filter) that capture emitted PM are used. Is being developed.
- DPF Diesel Particulate Filter
- a type called a wall flow type in which the flow holes of a filter having a honeycomb structure are alternately plugged, is becoming the mainstream, and among the wall flow types, silicon carbide cordierite or the like is used. Ceramic filters are becoming mainstream.
- the present invention has been made in view of such conventional problems. Particularly, in a DPF coated with a catalyst, the inflow of high concentrations of CO and HC is suppressed, and It is an object of the present invention to provide an internal combustion engine system capable of preventing occurrence of cracks and melting damage.
- the present invention detects and controls CO and HC in the exhaust gas flowing into the filter.Especially, when the concentration of CO or HC exceeds the allowable value, the evacuation is performed. This is to prevent cracks and erosion of the filter by performing effective control. As a result of repeated studies, it was found that the above objectives could be achieved by the following means.
- an engine a filter arranged in a flow path of the exhaust gas of the engine to trap fine particles in the exhaust gas, and a portion of the exhaust gas of the engine to the intake side.
- An exhaust gas recirculation device (EGR device) and a Z or a supercharger wherein the exhaust gas recirculation device is disposed upstream of a filter in an exhaust gas flow path, and is configured to supply exhaust gas to the filter.
- Gas detection means for detecting the specific gas component in the gas, and the valve lift and Z or supercharger of the turbocharger that constitute the exhaust gas recirculation system according to the increase or decrease of the specific gas component detected by the gas detection means And a controller capable of adjusting the pressure.
- the gas detection means detects a specific gas component in the exhaust gas such as CO or HC, and the controller performs control in accordance with an increase or decrease in the gas having the characteristic detected by the gas detection means. I do.
- This control adjusts the exhaust gas recirculation amount (EGR amount) by controlling the lift amount of a valve (EGR valve) constituting the exhaust gas recirculation device in accordance with the increase or decrease of a specific gas.
- the supercharging pressure of the supercharger is adjusted.
- the EGR device includes at least a flow path (EGR pipe) for recirculating exhaust gas and an EGR valve provided therein. There may be other ancillary equipment for cooling the circulating gas.
- the present invention is referred to as an internal combustion engine system
- the present invention as represented by a supercharged engine, includes a filter, an exhaust gas recirculation device (EGR device), and a Z or supercharger. And an internal combustion engine with gas detection means and a controller (synonymous).
- the controller when the specific gas component exceeds an allowable value, the controller closes a valve (EGR valve) constituting the exhaust gas recirculation device and performs Z or supercharging. It is preferable to reduce the supercharging pressure of the machine. Further, in the internal combustion engine system of the present invention, it is preferable that the controller reduces the fuel injection amount when a specific gas component exceeds an allowable value.
- EGR valve a valve constituting the exhaust gas recirculation device and performs Z or supercharging. It is preferable to reduce the supercharging pressure of the machine.
- a preferred embodiment of the internal combustion engine system of the present invention is control when a specific gas such as CO or HC exceeds an allowable value.
- the EGR valve is closed and Z or Control to reduce the supercharging pressure of the feeder is performed.
- the exhaust gas does not recirculate to the engine, so that certain gases do not enter the filter due to their high concentration.
- the supercharging pressure of the turbocharger by reducing the supercharging pressure of the turbocharger, the total amount of exhaust gas is reduced, and specific Does not flow into the filter in a high concentration state. With these, cracks and erosion of the filter can be prevented from occurring. Also, filter damage can be prevented by reducing the fuel injection amount and the exhaust gas temperature.
- the controller when the specific gas component exceeds the allowable value, the controller turns on the warning light on the driver's seat side to put the filter in a dangerous state. Is preferably notified. At this time, it is more preferable to simultaneously close the EGR valve and decrease the supercharging pressure of the Z or the supercharger.
- a preferred aspect of the internal combustion engine system of the present invention is to turn on a warning light. If specific gases such as CO and HC exceed the allowable values, there are factors such as sticking of the nozzle of the variable capacity turbo, which is not limited to sticking of the EGR valve, and failure of forced regeneration of PM deposited on the filter. In the case of these abnormalities, it is possible to reliably notify of the abnormalities by turning on a power warning lamp that requires maintenance of the vehicle.
- the internal combustion engine system of the present invention is suitably used when the specific gas component power is one or both of CO and HC.
- the internal combustion engine system of the present invention uses the specific gas of one or both of CO and HC, and based on the detection of one or both of CO and HC, Control takes place.
- the filter preferably carries a catalyst having an oxidation function!
- a specific gas component in exhaust gas such as CO or HC is detected, and control is performed in accordance with an increase or decrease in the detected gas.
- the internal combustion engine system of the present invention when a specific gas such as CO or HC exceeds an allowable value, control for closing the EGR valve and / or reducing the supercharging pressure of the supercharger is performed. Therefore, cracks and erosion of the filter can be prevented from occurring.
- the abnormality notification such as the EGR valve sticking, the variable capacity turbo nozzle sticking, and the forced regeneration failure of the PM deposited on the filter is performed. Can be performed reliably.
- measures can be taken for either or both of CO and HC.
- FIG. 1 is a schematic diagram showing a configuration in an embodiment of an internal combustion engine system of the present invention.
- FIG. 2 is a flowchart showing an example of control.
- FIG. 3 is a timing chart of an example of control.
- FIG. 4 is a perspective view of a filter.
- FIG. 5 is a perspective view of a honeycomb segment constituting the filter.
- FIG. 6 is a cross-sectional view of a honeycomb segment.
- FIG. 1 is a schematic diagram showing the overall configuration of an embodiment of the internal combustion engine system of the present invention.
- the present invention is applied to a diesel engine 11 which is an example of an internal combustion engine.
- the diesel engine 11 includes an intake-side pipe (intake pipe) 13 that takes in air to the cylinder 12 and an exhaust-side pipe (exhaust pipe) 14 that takes out air.
- An EGR pipe 15 is disposed between the intake pipe 13 and the exhaust pipe 14, and an EGR valve 16 is inserted into the EGR pipe 15.
- An exhaust pipe 17 is connected to the exhaust pipe 14 as an exhaust gas flow path (exhaust gas flow path) for discharging exhaust gas.
- the filter 1 is disposed inside the exhaust pipe 17. Te ru. The filter 1 captures PM in the exhaust gas, and the exhaust gas passing through the filter 1 is discharged to the outside of the vehicle through a muffler (not shown).
- FIG. 4 is a perspective view showing the filter 1 used in this embodiment.
- the filter 1 for example, a ceramic filter can be adopted.
- the filter 1 is formed by joining a plurality of honeycomb segments 2 in the vertical and horizontal directions via a joining material 9. After the joining of 2, the workpiece is ground so as to have a circular cross section, an elliptical cross section, a triangular cross section and other cross sections, and the outer peripheral surface is covered with the coating material 4.
- each of the honeycomb segments 2 has a large number of flow holes 5 partitioned by a porous partition wall 6.
- the flow holes 5 pass through the honeycomb segment 2 in the axial direction, and one ends of the adjacent flow holes 5 are alternately plugged with the filler 7. That is, in one of the flow holes 5, the left end is open, while the right end is plugged with the filler 7, and in the other flow hole 5 adjacent thereto, the left end is open. Force plugged by filler 7 The right end is open. Due to such plugging, as shown in FIG. 5, the end face of the honeycomb segment 2 has a pine pattern.
- the filter 1 on which such a honeycomb segment 2 is assembled is arranged in an exhaust pipe 17 as shown in FIG. 1, the exhaust gas flows from each honeycomb segment 2 from the left side in FIG. It flows into the circulation hole 5 and moves to the right. That is, in FIG. 6, the left side of the two-cam segment 2 serves as an exhaust gas inlet, and the exhaust gas flows from the communication hole 5 which is opened without being plugged into the hard cam segment. Inflow into 2.
- the exhaust gas that has flowed into the flow holes 5 passes through the porous partition walls 6, and flows out of the other flow holes. And through partition 6 When passing through, PM including soot in the exhaust gas is captured by the partition walls 6, and the exhaust gas is purified.
- the honeycomb segment 2 shown in FIG. 6 can have an appropriate cross-sectional shape such as a triangular cross section or a hexagonal cross section having a square cross section. Also, the cross-sectional shape of the flow hole 5 can be triangular, hexagonal, circular, oval, or any other shape.
- the material of the honeycomb segment 2 is silicon carbide, silicon carbide based composite material, silicon nitride, cordierite, mullite, alumina, spinel, silicon carbide cordierite based composite material, A group consisting of silicon carbide composite material, lithium aluminum silicate, aluminum titanate, and FeCrA1-based metal. It is preferable to use a material selected from one or a combination of two or more.
- the plugging with the filler 7 is performed by immersing the end face of the honeycomb segment 2 into the slurry-like filler 7 and filling the opening of the distribution hole 5 with the flow hole 5 that is not plugged masked. This is done by The filling of the filler 7 may be performed before firing after forming the honeycomb segment 2 or after firing, but is preferably performed before firing because the firing step is completed once.
- the filter 1 can carry the oxidation catalyst.
- an oxidation catalyst a white metal metal, an alkaline earth metal, or another catalyst is used, and the Sarkame segment 2 is immersed in the slurry, or the Slurry is applied to the outer surface of the Sarkame segment 2. After that, drying is carried out, so that the catalyst can be supported.
- the honeycomb segment 2 is manufactured as described above, the outer surface of the A slurry-like joining material 9 is applied, a plurality of honeycomb segments 2 are assembled so as to have a predetermined three-dimensional shape, and the assembly is heated and dried while being pressed under pressure. As a result, a joined body in which the plurality of honeycomb segments 2 are joined is produced. Thereafter, the joined body is ground, the outer peripheral surface is covered with the coating material 4, and dried by heating, whereby the filter 1 shown in FIG. 4 can be manufactured.
- the oxidation catalyst after the final filter 1 was prepared as described above, the obtained filter 1 was carried by performing the same treatment as that for the honeycomb segment 2 described above. May be.
- gas detection means 18 is disposed in the exhaust gas passage 21 (exhaust pipe 17), and detects a specific gas in the exhaust gas.
- the gas detecting means 18 is disposed upstream of the filter 1 in the exhaust pipe 17 and detects a specific gas in the exhaust gas before the exhaust gas flows into the filter 1.
- the gas detecting means 18 detects CO and HC in the exhaust gas.
- a catalyst for oxidizing CO and HC is disposed in the exhaust pipe 17, and a temperature sensor for detecting a temperature of the catalyst which is changed by an oxidation reaction with these CO and HC is connected to the catalyst.
- the catalyst a catalyst whose temperature changes substantially in proportion to the amounts of CO and HC is selected.
- Pt, Pd, Ni or the like can be used.
- the controller 19 is connected to the gas detection means 18.
- the controller 19 detects the amounts of CO and HC in the exhaust gas by receiving a signal from the gas detecting means 18 and controls the EGR valve 16 according to the detected amount.
- the controller 19 is provided with the EGR valve 16 or the supercharger. It acts to control one or both of the machines.
- the control by the controller 19 is performed by adjusting the lift amount and the Z of the EGR valve 16 or the supercharging pressure of the supercharger in accordance with the increase or decrease of CO and HC detected by the gas detecting means 18.
- the amount of CO and HC in the exhaust gas flowing through the exhaust gas passage 21 increases, the amount of exhaust gas to be recirculated is reduced by decreasing the lift amount of the EGR valve 16 to reduce the amount of exhaust gas. Reduce the concentration of CO and HC in the exhaust gas flowing into 1.
- the concentration of CO and HC in the exhaust gas flowing into the filter 1 is reduced. I do.
- cracks and erosion of the filter 1 caused by abnormal heat generation due to high concentrations of CO and HC are prevented.
- FIG. 2 is a flowchart illustrating an example of control by the controller 19.
- the controller 19 determines whether the concentration of CO and HC is normal or not, and if normal, controls the EGR valve 16 normally (step S2).
- step S3 the lift amount of the EGR valve 16 is reduced.
- step S3 the controller 19 continues to determine whether the concentrations of CO and HC are normal (step S4).
- step S4 a determination is made based on whether or not the forces of CO and HC exceed these allowable values, and if not, control is performed so that the EGR valve 16 is closed and the lift amount becomes zero.
- the warning light is turned on (step S5).
- the controller 19 determines whether or not the concentrations of CO and HC are normal (step S7). If the concentrations are normal, the controller 19 performs control with a fixed turbine capacity and the like and control with a reduced fuel injection amount. Continue (step S8). If it is not normal, that is, if the concentrations of CO and HC do not return to normal values in step S6, the vehicle shifts to a so-called evacuation mode in which the vehicle travels only at an extremely low speed (step S9).
- FIG. 3 is a timing chart showing an example of control based on the flowchart of FIG. 2, and is a timing chart after the EGR valve 16 is fixed for some reason during traveling of the vehicle.
- the controller 19 turns on the warning light and closes the EGR valve 16 to reduce the lift to zero. .
- the controller 19 decreases the supercharging pressure of the supercharger to reduce the fuel injection amount. Thereby, thereafter, the concentrations of CO and HC are reduced and returned to the normal level.
- the present invention provides, in addition to the engine, a filter disposed in the flow path of the exhaust gas of the engine, an exhaust gas recirculation device that sends a part of the exhaust gas of the engine to the intake side, and a z or supercharger.
- the filter can be used for an internal combustion engine system having the following, and the filter can be prevented from being damaged. In particular, it is suitably used when the engine is a diesel engine.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003413084A JP2007085173A (ja) | 2003-12-11 | 2003-12-11 | 内燃機関 |
JP2003-413084 | 2003-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005056998A1 true WO2005056998A1 (ja) | 2005-06-23 |
Family
ID=34675045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017484 WO2005056998A1 (ja) | 2003-12-11 | 2004-11-25 | 内燃機関システム |
Country Status (2)
Country | Link |
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JP (1) | JP2007085173A (ja) |
WO (1) | WO2005056998A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1181984A (ja) * | 1997-09-01 | 1999-03-26 | Isuzu Ceramics Kenkyusho:Kk | ディーゼルパティキュレートフィルタの制御方法及びその制御装置 |
JP2002322910A (ja) * | 2001-04-25 | 2002-11-08 | Nissan Motor Co Ltd | ディーゼルエンジンの排気浄化装置 |
JP2002371827A (ja) * | 2001-06-18 | 2002-12-26 | Denso Corp | エンジン用排気浄化装置 |
JP2003247416A (ja) * | 2002-02-22 | 2003-09-05 | Toyota Motor Corp | 排気ガス浄化装置及び排気ガス浄化方法 |
-
2003
- 2003-12-11 JP JP2003413084A patent/JP2007085173A/ja not_active Withdrawn
-
2004
- 2004-11-25 WO PCT/JP2004/017484 patent/WO2005056998A1/ja not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1181984A (ja) * | 1997-09-01 | 1999-03-26 | Isuzu Ceramics Kenkyusho:Kk | ディーゼルパティキュレートフィルタの制御方法及びその制御装置 |
JP2002322910A (ja) * | 2001-04-25 | 2002-11-08 | Nissan Motor Co Ltd | ディーゼルエンジンの排気浄化装置 |
JP2002371827A (ja) * | 2001-06-18 | 2002-12-26 | Denso Corp | エンジン用排気浄化装置 |
JP2003247416A (ja) * | 2002-02-22 | 2003-09-05 | Toyota Motor Corp | 排気ガス浄化装置及び排気ガス浄化方法 |
Also Published As
Publication number | Publication date |
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JP2007085173A (ja) | 2007-04-05 |
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