WO2005116410A1 - 排気浄化装置 - Google Patents
排気浄化装置 Download PDFInfo
- Publication number
- WO2005116410A1 WO2005116410A1 PCT/JP2004/007366 JP2004007366W WO2005116410A1 WO 2005116410 A1 WO2005116410 A1 WO 2005116410A1 JP 2004007366 W JP2004007366 W JP 2004007366W WO 2005116410 A1 WO2005116410 A1 WO 2005116410A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- particulate filter
- exhaust gas
- injection
- driver
- fuel
- Prior art date
Links
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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/80—Chemical processes for the removal of the retained particles, e.g. by burning
- B01D46/84—Chemical processes for the removal of the retained particles, e.g. by burning by heating only
-
- 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
-
- 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
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0829—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to special engine control, e.g. giving priority to engine warming-up or learning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0812—Particle filter loading
-
- 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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
-
- 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 exhaust gas purification device.
- Particulate matter (particulate matter) emitted from a diesel engine mainly consists of soot composed of carbonaceous matter and SOF (Soluble Organic Fraction: soluble organic matter) composed of high-boiling hydrocarbon components.
- SOF Soluble Organic Fraction: soluble organic matter
- a particulate filter is installed in the exhaust pipe through which exhaust gas flows. Has been done in the past.
- This type of particulate filter has a porous honeycomb structure made of a ceramic such as cordierite, and the inlets of the respective flow paths partitioned in a lattice are alternately sealed, and the inlets are sealed.
- the outlets of the flow channels and the flow channels are sealed so that only the exhaust gas that has passed through the porous thin walls that define each flow channel is discharged to the downstream side. I am trying to do it.
- the fuel added upstream of the particulate filter performs an oxidation reaction on the oxidation catalyst of the particulate filter, and the heat of the reaction raises the catalyst bed temperature, and the particulates in the particulate filter are reduced. You will be burned out.
- a pressure sensor is arranged before and after a particulate filter, and a differential pressure between an inlet side and an outlet side is determined to determine an excessive collection state.
- the design philosophy of determining the over-collection state of the particulate filter based on the mileage, driving time, etc., and forcibly regenerating the particulate filter automatically during traveling was the mainstream. As a result, when a large amount of particulates accumulated in the particulate filter, there was a concern that the driver could not immediately perform forced regeneration of the particulate filter immediately.
- the present invention has been made in view of the above circumstances, and has as its object to provide an exhaust gas purifying apparatus capable of arbitrarily forcibly regenerating a particulate filter with a driver's intention.
- the present invention is an exhaust gas purifying apparatus equipped with a catalyst regeneration type particulate filter in the middle of an exhaust pipe through which exhaust gas flows, and forcibly combusts the particulate collected by the particulate filter. It comprises a forced regeneration means for removing and regenerating the particulate filter, and an operation means provided in a driver's seat for arbitrarily operating the forced regeneration means.
- the particulate filter falls into an over-collection state and is quickly
- the driver can operate the operating means to activate the forced regeneration when it becomes necessary to perform forced regeneration or when the driver wants to perform regular regeneration of the particulate filter.
- forced regeneration of the particulate filter can be arbitrarily performed by the driver.
- the particulate filter can be arbitrarily and forcibly regenerated by the driver's intention by operating the operating means in the driver's seat.
- the forced regeneration means is immediately activated to regenerate the particulate filter, or the driver periodically performs the forced regeneration of the particulate filter.
- FIG. 1 to FIG. 3 show an embodiment of the present invention.
- a muffler 5 of an exhaust pipe 4 through which exhaust gas 3 discharged through a valve 2 is circulated accommodates a catalyst regeneration type particulate filter 6 integrally supporting an oxidation catalyst.
- the filter case 7 that holds the particulate filter 6 forms an outer cylinder of the muffler 5.
- a particulate filter 6 as shown in an enlarged view in FIG. 2 is housed inside a filter case 7 having an inlet pipe 8 and an outlet pipe 9 at the front and back. It has a porous honeycomb structure made of ceramic, and the inlets of each flow passage 6a partitioned in a lattice are alternately plugged, and the inlets are plugged. The outlet is sealed so that only the exhaust gas 3 that has passed through the porous thin wall 6b that defines each flow path 6a is discharged downstream.
- the inlet pipe 8 and the outlet pipe 9 of the filter case 7 are provided with pressure sensors 10 and 11 for measuring the inlet gas pressure and the outlet gas pressure of the exhaust gas 3, respectively.
- the detection signals 10a and 11a of the sensors 10 and 11 are input to a control device 12 which forms an engine control computer (ECU: Electronic Control Unit). Based on the detection signals 10a and 11a from 11, it is determined whether the pressure difference between the inlet side and the outlet side of the particulate filter 6 is within the normal range, and when the pressure difference exceeds the normal range, the particulate filter It is determined that the filter 6 has fallen into an over-collection state.
- ECU Electronic Control Unit
- control device 12 outputs a fuel injection signal 13a for instructing a fuel injection timing and an injection amount to a fuel injection device 13 for injecting fuel into each cylinder of the diesel engine 1. I have.
- the fuel injection device 13 is composed of a plurality of injectors (not shown) provided for each cylinder, and the solenoid valves of each of the injectors are appropriately controlled to open according to the fuel injection signal 13a. Then, the fuel injection timing (injection start timing and injection end timing) and the injection amount (valve opening time) are appropriately controlled.
- the accelerator in the driver's seat (not shown) is provided with an accelerator sensor 14 (load sensor) for detecting the accelerator opening as a load on the diesel engine 1, and the diesel engine 1 has A rotation sensor 15 for detecting the rotation speed is provided, and an accelerator opening signal 14a and a rotation speed signal 15a from the accelerator sensor 14 and the rotation sensor 15 are also input to the control device 12. .
- an accelerator sensor 14 load sensor
- a rotation sensor 15 for detecting the rotation speed is provided, and an accelerator opening signal 14a and a rotation speed signal 15a from the accelerator sensor 14 and the rotation sensor 15 are also input to the control device 12.
- the instrument panel in the driver's seat receives a warning signal 16a from the control device 12 when the control device 12 determines that the particulate filter 6 has fallen into an excessive collection state.
- a warning lamp 16 which is turned on and a regeneration button 17 which is an operation means for arbitrarily operating a forced regeneration means which will be described in detail later are provided.
- the fuel injection signal 13a in the normal mode is determined based on the accelerator opening signal 14a and the rotation speed signal 15a.
- the mode switches from the normal mode to the forced regeneration mode, and after the main fuel injection performed near the compression top dead center (crank angle 0 °), the compression top dead center starts.
- the fuel injection signal 13a for performing post-injection at a timing at which ignition does not occur late is determined. That is, in the present embodiment, the control device 12 and the fuel injection device 13 constitute a forced regeneration means for the particulate filter 6, and the compression top dead center follows the main injection as described above.
- unburned fuel mainly HC: hydrocarbon
- HC HC: hydrocarbon
- the control device 12 determines that the particulate filter 6 has fallen into an excessive collection state on the basis of the detection signals 10a and 11a from the pressure sensors 10 and 11, and the control device 12
- the warning lamp 16 is turned on in response to the warning signal 16a and the driver confirms this and presses the regeneration button 17
- the control of the fuel injection device 13 by the control device 12 is switched from the normal mode to the forced regeneration mode.
- post-injection is performed at a timing that does not ignite later than the compression top dead center.
- unburned fuel is added to the exhaust gas 3 and the fuel is deposited on the oxidation catalyst on the surface of the particulate filter 6.
- An oxidation reaction occurs, and the heat of the reaction raises the temperature of the catalyst bed, and the particulates in the particulate filter 6 are burned and removed.
- the combustion is enabled immediately after the main injection of the fuel.
- the fuel injection signal 13a is determined such that the after-injection is performed at a practicable timing and the post-injection is performed following the after-injection at a non-ignition timing later than the compression top dead center.
- the particulate filter 6 can be arbitrarily and forcibly reproduced by the driver's intention by operating the reproduction button 17 in the driver's seat. If a large amount of particulates accumulates in the particulate filter 6, the forced regeneration means is activated immediately to regenerate the particulate filter 6, or the driver periodically releases the particulate filter 6. By executing forced regeneration, it is possible to prevent an over-collection state from occurring.
- step S1 the normal mode force of step S1 shifts to the state where the play button 17 of step S2 is pressed, and then the idling stop condition is confirmed in step S3, and all conditions are satisfied. Only when the condition is satisfied, the process proceeds to step S4, where the forced regeneration mode is continued for the predetermined time T and returns to the normal mode. Control logistics Make sure you have a hook.
- the idling stop conditions in step S3 include, for example,
- the engine speed is equal to or lower than a predetermined speed.
- means for switching the mode of the injection pattern of the fuel injection device 13 by the control device 12 as a means of forcibly regenerating the particulate filter 6 is exemplified.
- this kind of forced regeneration means for example, an injector for fuel addition is separately arranged at any place in the exhaust flow path from the exhaust manifold 2 to the exhaust pipe 4, and the fuel is supplied by the injector. It is also possible to employ a means for adding the gas to the exhaust gas 3, and a means for attaching a heating device such as an electric heater to the particulate filter 6.
- the exhaust gas purification apparatus of the present invention is not limited to the above-described embodiment, and the operation means may be of a switch type other than the regeneration button. Various changes can be made without departing from the scope.
- FIG. 1 is a schematic view showing one embodiment of the present invention.
- FIG. 2 is a sectional view showing details of a particulate filter shown in FIG. 1.
- FIG. 3 is a flowchart showing an example of control logic related to emergency release of forced regeneration. Explanation of symbols
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/597,522 US20070214778A1 (en) | 2004-05-28 | 2004-05-28 | Exhaust Gas Purifier |
PCT/JP2004/007366 WO2005116410A1 (ja) | 2004-05-28 | 2004-05-28 | 排気浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/007366 WO2005116410A1 (ja) | 2004-05-28 | 2004-05-28 | 排気浄化装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005116410A1 true WO2005116410A1 (ja) | 2005-12-08 |
Family
ID=35450944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/007366 WO2005116410A1 (ja) | 2004-05-28 | 2004-05-28 | 排気浄化装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US20070214778A1 (ja) |
WO (1) | WO2005116410A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101943043A (zh) * | 2009-07-02 | 2011-01-12 | 通用汽车环球科技运作公司 | 体积减小的电加热微粒过滤器 |
US8627652B2 (en) * | 2006-06-13 | 2014-01-14 | Isuzu Motors Limited | Control method of exhaust gas purification system and exhaust gas purification system |
US8973350B2 (en) | 2006-06-13 | 2015-03-10 | Isuzu Motors Limited | Control method of exhaust gas purification system and exhaust gas purification system |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4928335B2 (ja) * | 2007-04-17 | 2012-05-09 | 日野自動車株式会社 | 排気浄化装置 |
US8061129B2 (en) * | 2009-01-30 | 2011-11-22 | Thermo King Corporation and Donaldson Company, Inc. | System and method to regenerate a diesel particulate filter |
US8584445B2 (en) * | 2009-02-04 | 2013-11-19 | GM Global Technology Operations LLC | Method and system for controlling an electrically heated particulate filter |
US8950177B2 (en) * | 2009-06-17 | 2015-02-10 | GM Global Technology Operations LLC | Detecting particulate matter load density within a particulate filter |
US8341945B2 (en) * | 2009-07-01 | 2013-01-01 | GM Global Technology Operations LLC | Electrically heated particulate filter |
US8479496B2 (en) * | 2009-07-02 | 2013-07-09 | GM Global Technology Operations LLC | Selective catalytic reduction system using electrically heated catalyst |
US8475574B2 (en) | 2009-08-05 | 2013-07-02 | GM Global Technology Operations LLC | Electric heater and control system and method for electrically heated particulate filters |
US8511069B2 (en) * | 2009-08-12 | 2013-08-20 | GM Global Technology Operations LLC | Systems and methods for layered regeneration of a particulate matter filter |
JP5533260B2 (ja) * | 2010-05-25 | 2014-06-25 | いすゞ自動車株式会社 | Dpfシステム |
JP5304738B2 (ja) * | 2010-06-25 | 2013-10-02 | 日産自動車株式会社 | ディーゼルエンジンの排気浄化装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0719029A (ja) * | 1993-06-30 | 1995-01-20 | Toyota Autom Loom Works Ltd | ディーゼル機関の排気ガス浄化装置 |
JP2003155914A (ja) * | 2001-11-20 | 2003-05-30 | Hino Motors Ltd | 排気浄化装置 |
JP2003184537A (ja) * | 2001-12-21 | 2003-07-03 | Niles Parts Co Ltd | エンジンの煤除去装置 |
JP2004068784A (ja) * | 2002-08-09 | 2004-03-04 | Mazda Motor Corp | エンジンの排気浄化装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3580606D1 (de) * | 1984-03-31 | 1991-01-03 | Mitsubishi Motors Corp | Regenerationssystem fuer eine diesel-partikel-oxydierungseinrichtung. |
US5121601A (en) * | 1986-10-21 | 1992-06-16 | Kammel Refaat A | Diesel engine exhaust oxidizer |
US6497095B2 (en) * | 2000-12-21 | 2002-12-24 | Ford Global Technologies, Inc. | Regeneration of diesel engine particulate filter only above low fuel levels |
US6829890B2 (en) * | 2002-08-13 | 2004-12-14 | International Engine Intellectual Property Company, Llc | Forced regeneration of a diesel particulate filter |
JP4045935B2 (ja) * | 2002-11-25 | 2008-02-13 | 三菱ふそうトラック・バス株式会社 | 内燃機関の排気浄化装置 |
JP4139259B2 (ja) * | 2003-04-08 | 2008-08-27 | 日野自動車株式会社 | パティキュレートフィルタの再生方法 |
JP4333289B2 (ja) * | 2003-09-03 | 2009-09-16 | いすゞ自動車株式会社 | 排気ガス浄化システム |
JP4161932B2 (ja) * | 2004-04-09 | 2008-10-08 | いすゞ自動車株式会社 | 排気ガス浄化システムの制御方法及び排気ガス浄化システム |
-
2004
- 2004-05-28 WO PCT/JP2004/007366 patent/WO2005116410A1/ja active Application Filing
- 2004-05-28 US US11/597,522 patent/US20070214778A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0719029A (ja) * | 1993-06-30 | 1995-01-20 | Toyota Autom Loom Works Ltd | ディーゼル機関の排気ガス浄化装置 |
JP2003155914A (ja) * | 2001-11-20 | 2003-05-30 | Hino Motors Ltd | 排気浄化装置 |
JP2003184537A (ja) * | 2001-12-21 | 2003-07-03 | Niles Parts Co Ltd | エンジンの煤除去装置 |
JP2004068784A (ja) * | 2002-08-09 | 2004-03-04 | Mazda Motor Corp | エンジンの排気浄化装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8627652B2 (en) * | 2006-06-13 | 2014-01-14 | Isuzu Motors Limited | Control method of exhaust gas purification system and exhaust gas purification system |
US8973350B2 (en) | 2006-06-13 | 2015-03-10 | Isuzu Motors Limited | Control method of exhaust gas purification system and exhaust gas purification system |
CN101943043A (zh) * | 2009-07-02 | 2011-01-12 | 通用汽车环球科技运作公司 | 体积减小的电加热微粒过滤器 |
Also Published As
Publication number | Publication date |
---|---|
US20070214778A1 (en) | 2007-09-20 |
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