EP1596046A1 - Dispositif et procédé pour la régénération d'un filtre des particules diesel - Google Patents
Dispositif et procédé pour la régénération d'un filtre des particules diesel Download PDFInfo
- Publication number
- EP1596046A1 EP1596046A1 EP04102116A EP04102116A EP1596046A1 EP 1596046 A1 EP1596046 A1 EP 1596046A1 EP 04102116 A EP04102116 A EP 04102116A EP 04102116 A EP04102116 A EP 04102116A EP 1596046 A1 EP1596046 A1 EP 1596046A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- cylinders
- exhaust
- treatment device
- gas treatment
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 6
- 230000008929 regeneration Effects 0.000 title claims description 22
- 238000011069 regeneration method Methods 0.000 title claims description 22
- 239000007789 gas Substances 0.000 claims abstract description 80
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 23
- 230000003647 oxidation Effects 0.000 claims description 22
- 238000007254 oxidation reaction Methods 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 7
- 239000004071 soot Substances 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0082—Controlling each cylinder individually per groups or banks
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0093—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are of the same type
-
- 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
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/103—Oxidation catalysts for HC and CO only
-
- 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
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/107—More than one exhaust manifold or exhaust collector
-
- 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
- F01N2430/08—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing
-
- 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
Definitions
- the present invention relates to an arrangement for treating the exhaust gases a multi-cylinder internal combustion engine according to the preamble of claim 1 and a corresponding method.
- the present invention is accordingly based on the object of efficiency to improve the emission control, but at the same time the regeneration a diesel particulate filter should not be affected.
- the improved exhaust gas purification is achieved in that in addition to the preferably consisting of an oxidation catalyst and a diesel particulate filter Exhaust treatment device, hereinafter referred to as “primary exhaust treatment device” is designated, provided a second exhaust treatment device hereinafter referred to as “secondary exhaust treatment device” is and which is arranged closer to the Zylinderauslisterventilen.
- second exhaust treatment device is preferably in the flow direction still arranged in front of an exhaust gas turbocharger.
- the engine having divided for different cylinders exhaust paths, and that only the exhaust gases a first cylinder group of an additional exhaust gas purification by the secondary exhaust treatment device be subjected to, whereas the exhaust gases a second cylinder group past the secondary exhaust gas treatment device become.
- This arrangement opens up the possibility, as part of the regeneration phase only one post-injection for the cylinders of the second cylinder group provided so that the corresponding exhaust gas with increased enthalpy is fed directly to the primary exhaust treatment device.
- a post-injection in the cylinder of the first cylinder group is preferably avoided, since this is only an undesirable increase in temperature in the secondary exhaust gas treatment device would affect the fuel economy and damage to the secondary exhaust treatment device can lead.
- sensors can be used which Allow conclusions on the combustion process.
- These can be integrated cylinder pressure sensors (Arrangement in, for example, the glow plug, the cylinder head gasket or individual) or acceleration sensors (e.g., knock sensors).
- the adjustments the individual injection quantities or injection curves for each cylinder bank can by means of a suitable (feedback) regulation by a Motor control can be achieved.
- the single FIGURE shows a schematic diagram of an exhaust treatment system according to the invention.
- the internal combustion engine shown schematically in the figure 10, which in the specific embodiment is a six-cylinder diesel engine has two rows of cylinders 12 and 14 in V configuration.
- the exhaust gases from the exhaust valves of the two rows of cylinders are first collected via two separate exhaust manifolds 24, 26, located in front of an exhaust gas turbocharger 32 merge to a common exhaust path 22 for all cylinders.
- the exhaust gas turbocharger 32 has a turbine located in the exhaust gas flow, on the rotation in a known manner, the intake air is additionally compressed (The inlet branch is not shown in the figure).
- a total of 30th characterized primary exhaust gas treatment device provided which is an oxidation catalyst 16 (in this case, a conventional three-way catalyst) and a diesel particulate filter disposed immediately downstream of the flow direction 18 (DPI, diesel particulate filter) has.
- the diesel particulate filter 18 decreases the soot particles in the exhaust gas.
- a regeneration phase initiated, within which the accumulated soot particles are burned.
- the time of regeneration can be determined from measured values (eg. B. based on a pressure drop across the particulate filter) or engine operating parameters with regeneration being preferred only in certain, particularly suitable engine operating conditions is performed.
- the temperature of the primary exhaust treatment device 30 is greatly increased. This happens - like out the prior art known in principle - characterized in that a post-injection is made of fuel into the cylinder, through which the primary exhaust gas treatment device 30 supplied exhaust gases an increased proportion of unoxidized Have hydrocarbons. These are then in the oxidation catalyst 16 oxidized. The released heat of combustion then heats up the diesel particulate filter 18 arranged directly downstream in the exhaust path and leads to combustion of soot deposits.
- the primary exhaust gas treatment device 30 only after the exhaust gas turbocharger 32 can be located at low combustion modes Exhaust gas temperatures sufficient catalyst temperature and thus a sufficient exhaust gas purification by the oxidation catalyst 16 is not always ensured because the exhaust gases cool on the long exhaust path, this Effect is further enhanced by the interposed exhaust gas turbocharger 32. Therefore, partial flows of the exhaust gases to support the oxidation catalyst 16 by a - usually smaller dimensioned - additional oxidation catalyst 20, also known as pre-turbine catalytic converter (PTC, pre turbine catalist, PTC) is purified.
- PTC pre turbine catalist
- a Post-injection causes only in the cylinder of the left bank of cylinders 12, so that the resulting exhaust gases with an increased content unburned Hydrocarbons past the additional oxidation catalyst 20 be and as desired first in the oxidation catalyst 16 of the primary exhaust treatment device 30 are oxidized.
- the injection of the other Cylinder bank 14 as far as possible to remain unchanged, the combustion process in the cylinder bank 12, however, influenced by the post-injection is, is by the engine control a corresponding adjustment of the injection to compensate for irregularities in the engine run performed. there can the injection quantities and times for both cylinder rows 12, 14 adapted be, for. B.
- the injection quantity in the main injection in the cylinder bank 12 be shortened slightly to the condition caused by the post-injection increased combustion energy (eg., Due to fuel residues, the remain in the cylinder after the discharge stroke).
- This adaptation can be either through fixed, stored in a table memory intervention done in the injection control.
- an unround engine can also for example, detected by a high-resolution crankshaft angle sensor and compensated under a feedback scheme.
- the cylinders are whole Series 12 can not be additionally catalysed
- the number of not addition Catalysed cylinders can also be reduced to the effect of additional To improve exhaust gas purification.
- the exhaust gas flow from the two rear cylinders of the left Cylinder row 12 additionally cleaned so that only one cylinder for Carrying out the post-injection remains.
- a combustion is prevented, so that the entire unburned Mixture of the primary exhaust treatment device 30 are supplied can.
- Such deactivation of combustion is of course also for more than one cylinder possible as long as engine operation is properly maintained can be.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04102116A EP1596046A1 (fr) | 2004-05-14 | 2004-05-14 | Dispositif et procédé pour la régénération d'un filtre des particules diesel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04102116A EP1596046A1 (fr) | 2004-05-14 | 2004-05-14 | Dispositif et procédé pour la régénération d'un filtre des particules diesel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1596046A1 true EP1596046A1 (fr) | 2005-11-16 |
Family
ID=34929093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04102116A Withdrawn EP1596046A1 (fr) | 2004-05-14 | 2004-05-14 | Dispositif et procédé pour la régénération d'un filtre des particules diesel |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1596046A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802315A2 (fr) * | 1996-04-19 | 1997-10-22 | Toyota Jidosha Kabushiki Kaisha | Dispositif de purification des gaz d'échappement pour moteur à combustion interne |
| DE19827420A1 (de) * | 1996-12-20 | 1999-12-23 | Daimler Chrysler Ag | Neue Regelstrategie für einen NOx-Speicher |
| US20030131588A1 (en) * | 2000-02-09 | 2003-07-17 | Eberhard Schnaibel | Desulphurisation of a storage catalytst by heating |
| EP1353046A1 (fr) * | 2002-04-09 | 2003-10-15 | Nissan Motor Co., Ltd. | Dispositif et méthode de purification de gaz d'échappement pour un moteur à combustion interne |
| US20040013580A1 (en) * | 2001-11-06 | 2004-01-22 | Rolf Bruck | Open filter body with improved flow properties |
| DE10243270A1 (de) * | 2002-09-18 | 2004-03-25 | Robert Bosch Gmbh | Abgasreinigungsanlage einer Brennkraftmaschine und Verfahren zur Reinigung deren Abgase |
-
2004
- 2004-05-14 EP EP04102116A patent/EP1596046A1/fr not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802315A2 (fr) * | 1996-04-19 | 1997-10-22 | Toyota Jidosha Kabushiki Kaisha | Dispositif de purification des gaz d'échappement pour moteur à combustion interne |
| DE19827420A1 (de) * | 1996-12-20 | 1999-12-23 | Daimler Chrysler Ag | Neue Regelstrategie für einen NOx-Speicher |
| US20030131588A1 (en) * | 2000-02-09 | 2003-07-17 | Eberhard Schnaibel | Desulphurisation of a storage catalytst by heating |
| US20040013580A1 (en) * | 2001-11-06 | 2004-01-22 | Rolf Bruck | Open filter body with improved flow properties |
| EP1353046A1 (fr) * | 2002-04-09 | 2003-10-15 | Nissan Motor Co., Ltd. | Dispositif et méthode de purification de gaz d'échappement pour un moteur à combustion interne |
| DE10243270A1 (de) * | 2002-09-18 | 2004-03-25 | Robert Bosch Gmbh | Abgasreinigungsanlage einer Brennkraftmaschine und Verfahren zur Reinigung deren Abgase |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
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| AX | Request for extension of the european patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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| 18W | Application withdrawn |
Effective date: 20060302 |