WO2001046568A2 - Dispositif de regeneration d'un filtre a particules d'une ligne d'echappement d'un moteur diesel - Google Patents
Dispositif de regeneration d'un filtre a particules d'une ligne d'echappement d'un moteur diesel Download PDFInfo
- Publication number
- WO2001046568A2 WO2001046568A2 PCT/FR2000/003109 FR0003109W WO0146568A2 WO 2001046568 A2 WO2001046568 A2 WO 2001046568A2 FR 0003109 W FR0003109 W FR 0003109W WO 0146568 A2 WO0146568 A2 WO 0146568A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- engine
- post
- exhaust gases
- upstream
- 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
- F02D41/021—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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal
-
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
- 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
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/405—Multiple injections with post injections
-
- 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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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 a device for regenerating a particulate filter of an exhaust line of a diesel engine, of the type comprising:
- a particle filter is installed on the exhaust line in order to retain the soot particles produced by the engine on its upstream face. It is advisable, during operation of the vehicle, to carry out a periodic regeneration of the particulate filter in order to avoid clogging or blockage of the particulate filter which, if it is not regenerated, creates a significant drop in the performance of the engine.
- a heat source consisting, for example, of an electrical resistance allowing, by a local supply of heat on the upstream face of the filter to cause auto -inflammation of the soot in the immediate vicinity of the hot spots, then propagation of the combustion by self-ignition over the entire upstream surface of the particulate filter.
- an additive should be added to the fuel supplying the engine to lower the combustion temperature of the soot. In particular, this additive makes it possible to reduce the combustion temperature by approximately 150 ° C., bringing it to a temperature close to 500 ° C.
- an arrangement as described above requires, for there to be self-ignition of the soot, a layer of soot of a sufficient thickness, this thickness being more variable as a function of the temperature of the gases. exhaust.
- the efficiency of the device is from 70 to 90%.
- the regeneration efficiency is very poor and in particular less than 50%, when the temperature of the exhaust gases is less than 150 ° C., a temperature observed during urban use of the vehicle.
- Another device for regenerating a particle filter has also been envisaged. This also includes means for adding an additive making it possible to lower the combustion temperature of the soot in the fuel supplying the engine. This device also comprises means for injecting fuel into the engine during the expansion phase.
- the device also comprises an oxidation catalyst installed at the outlet of the engine upstream of the particulate filter.
- This oxidation catalyst creates an additional post-combustion treating unburnt hydrocarbons resulting from post-injection.
- post-injection combined with the action of the oxidation catalyst, creates a rise in the temperature of the exhaust gases between 200 ° C and 250 ° C.
- the precious metal load of the oxidation catalyst must be very high. In particular, this must be greater than 3.53147 g / l (100 g / ft 3 ).
- the filter is gradually loaded with soot, which generates a significant exhaust back pressure, causing a significant drop in engine performance and an increase in the specific consumption of the engine.
- the first device described above is not really satisfactory and the second device envisaged does not work under certain conditions, in particular when the exhaust gases leaving the engine are at low temperatures, which prohibits its use.
- the object of the invention is to propose a device for regenerating a particulate filter ensuring efficient regeneration of the particulate filter whatever the conditions of use of the engine.
- the subject of the invention is a device for regenerating a particulate filter of an exhaust line of a diesel engine, of the aforementioned type, characterized in that said means for raising the temperature of the exhaust gases include: - activatable means for post-injecting fuel into the engine in the expansion phase to cause post-combustion in the cylinders;
- the regeneration device comprises one or more of the following characteristics: it comprises an oxidation catalyst placed on the exhaust line at the outlet of the engine and upstream of the particulate filter;
- the precious metal load of the oxidation catalyst is between 0.35 and 1.77 g / l (10 and 50 g / ft 3 );
- Said post-injection means are adapted to inject a quantity of fuel sufficient to obtain an increase in the temperature of the exhaust gases of between 200 ° C and 300 ° C;
- FIG. 1 shows a diesel engine 10 formed for example by a propulsion engine of a motor vehicle. This engine is supplied from a fuel tank 12. The tank is equipped with means 14 for injecting into the fuel an additive making it possible to lower the combustion temperature of the soot. The means 14 maintain a suitable concentration of the additive in the fuel.
- the additive is for example cerium.
- an oxidation catalyst 16 containing precious metals such as platinum is installed Immediately at the outlet of the engine 10, that is to say at the outlet of the cylinder head thereof, an oxidation catalyst 16 containing precious metals such as platinum is installed.
- the oxidation catalyst is lightly loaded with precious metals, its load being between 0.35 and 2.83 g / l
- an exhaust volume 20 Inside which is provided a particle filter 22.
- At least one heat source 24 is installed inside of the exhaust volume 20 opposite the upstream face of the particle filter is.
- the or each heat source 24 is formed for example by an electrical resistance.
- Each of the heat sources is controlled by a central control unit 26.
- means 28 for post-injecting fuel into the engine in the expansion phase are installed on the engine 10. These injection means 28 are connected to the central control unit 26.
- these injection means are formed by the injectors of the engine associated with a control logic adapted to allow an additional injection of fuel at determined instants of the operation of the engine. These determined moments are during the expansion phase of the motor.
- the central control unit 26 is adapted to simultaneously activate the injection means 28 and the heat source 24 during the regeneration phases of the particle filter.
- the device described here operates in the following manner.
- the means 28 carry out a post- injection of fuel into the engine cylinders, during its expansion phases.
- This post-injection causes an increase in the temperature of the gases leaving the engine.
- the heat sources 24 are put into action, also increasing the temperature of the gases immediately upstream of the particle filter. The temperature of the exhaust gases is then sufficient to create a self-ignition of the soot on its upstream surface, this self-ignition propagating over the entire surface of the particle filter.
- the device allows, by the post-injection associated with the action of the catalyst, oxidation, to increase the temperature of the gases by 250 ° C in the exhaust line 18. These gases are then at 400 ° C.
- the heat sources 24 locally supply the missing heat energy to cause the self-ignition of the soot on the upstream face of the particle filter, the latter being obtained at approximately 500 ° C. due to the supply of the engine with a fuel to which is added the additive which lowers the combustion temperature of the soot.
- the post-injection means are adapted to inject a quantity of fuel sufficient to obtain an increase in the temperature of the exhaust gases of between 200 ° C and 300 ° C.
- the or each heat source is adapted to locally provide a heat energy of approximately 1.5 kW, which makes it possible to obtain an increase in the temperature of the exhaust gases in the region of the upstream face of the filter. with particles located opposite each source, up to a value greater than 500 ° C.
- the device described here has the following advantages.
- the combustion of soot is carried out with improved efficiency compared to the two prior art devices taken separately. Indeed, while one works unsatisfactory and the other does not work for low temperatures of the gases leaving the engine, the device according to the invention works satisfactorily over the entire temperature range engine operation. A decrease in the back pressure in the exhaust line is noted. This allows a gain in consumption.
- a reduction in the mass of soot necessary for the regeneration of the particulate filter is possible by implementing the invention, which makes it possible to increase the life of the filter.
- a mass of 45 g of soot in a standard size particulate filter makes it possible to obtain, without post-injection, only by activation of the upstream heat source, a regeneration rate greater than
- a regeneration rate greater than 90% for a standard size particle filter is obtained even with initial temperatures of the order of 200 ° C. and a quantity of soot of 30 g.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10085316T DE10085316T1 (de) | 1999-12-21 | 2000-11-08 | Vorrichtung zur Regeneration eines Partikelfilters in einer Auspuffleitung eines Dieselmotors |
AU15281/01A AU1528101A (en) | 1999-12-21 | 2000-11-08 | Device for regenerating a particle filter of an exhaust line of a diesel engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR99/16172 | 1999-12-21 | ||
FR9916172A FR2802572B1 (fr) | 1999-12-21 | 1999-12-21 | Dispositif de regeneration d'un filtre a particules d'une ligne d'echappement d'un moteur diesel |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001046568A2 true WO2001046568A2 (fr) | 2001-06-28 |
WO2001046568A3 WO2001046568A3 (fr) | 2002-01-17 |
Family
ID=9553567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/003109 WO2001046568A2 (fr) | 1999-12-21 | 2000-11-08 | Dispositif de regeneration d'un filtre a particules d'une ligne d'echappement d'un moteur diesel |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU1528101A (fr) |
DE (1) | DE10085316T1 (fr) |
FR (1) | FR2802572B1 (fr) |
WO (1) | WO2001046568A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2522540A1 (fr) * | 2011-05-12 | 2012-11-14 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Structure d'installation d'un réservoir d'additif pour véhicule |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004176663A (ja) | 2002-11-28 | 2004-06-24 | Honda Motor Co Ltd | 内燃機関の排気浄化装置 |
FR2872208B1 (fr) * | 2004-06-23 | 2006-11-03 | Peugeot Citroen Automobiles Sa | Systeme d'aide a la regeneration de moyens de depollution integres dans une ligne d'echappement |
FR2872214B1 (fr) * | 2004-06-23 | 2006-11-03 | Peugeot Citroen Automobiles Sa | Systeme de controle de la regeneration de moyens de depollution |
FR2872213B1 (fr) | 2004-06-23 | 2006-11-03 | Peugeot Citroen Automobiles Sa | Systeme d'aide a la regeneration de moyens de depollution pour moteur de vehicule automobile |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4359863A (en) * | 1980-12-22 | 1982-11-23 | Texaco Inc. | Exhaust gas torch apparatus |
US5207990A (en) * | 1990-06-01 | 1993-05-04 | Nissan Motor Co., Ltd. | Exhaust gas purifying device for internal combustion engine |
DE19504182A1 (de) * | 1995-02-09 | 1996-08-14 | Eberspaecher J | Verfahren zum Betreiben eines Dieselpartikel-Filters in Abgasleitungen von Dieselmotoren |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4965509A (fr) | 1972-10-27 | 1974-06-25 | ||
JPS56138474A (en) | 1980-03-31 | 1981-10-29 | Taiho Kogyo Co Ltd | Shoe for swash plate type compressor |
JPS60153415A (ja) * | 1984-01-24 | 1985-08-12 | Toyota Motor Corp | デイ−ゼル排気浄化装置 |
JPS61135990A (ja) | 1984-12-04 | 1986-06-23 | Taiho Kogyo Co Ltd | シユ− |
US4734041A (en) | 1987-06-22 | 1988-03-29 | Control Data Corporation | Electrical power connector |
-
1999
- 1999-12-21 FR FR9916172A patent/FR2802572B1/fr not_active Expired - Fee Related
-
2000
- 2000-11-08 AU AU15281/01A patent/AU1528101A/en not_active Abandoned
- 2000-11-08 WO PCT/FR2000/003109 patent/WO2001046568A2/fr active Application Filing
- 2000-11-08 DE DE10085316T patent/DE10085316T1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4359863A (en) * | 1980-12-22 | 1982-11-23 | Texaco Inc. | Exhaust gas torch apparatus |
US5207990A (en) * | 1990-06-01 | 1993-05-04 | Nissan Motor Co., Ltd. | Exhaust gas purifying device for internal combustion engine |
DE19504182A1 (de) * | 1995-02-09 | 1996-08-14 | Eberspaecher J | Verfahren zum Betreiben eines Dieselpartikel-Filters in Abgasleitungen von Dieselmotoren |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 319 (M-439), 14 décembre 1985 (1985-12-14) & JP 60 153415 A (TOYOTA JIDOSHA KK), 12 août 1985 (1985-08-12) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2522540A1 (fr) * | 2011-05-12 | 2012-11-14 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Structure d'installation d'un réservoir d'additif pour véhicule |
Also Published As
Publication number | Publication date |
---|---|
AU1528101A (en) | 2001-07-03 |
FR2802572A1 (fr) | 2001-06-22 |
DE10085316T1 (de) | 2003-09-04 |
WO2001046568A3 (fr) | 2002-01-17 |
FR2802572B1 (fr) | 2002-03-29 |
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