FR2774422A1 - Assisted particle filter regeneration for diesel engine - Google Patents
Assisted particle filter regeneration for diesel engine Download PDFInfo
- Publication number
- FR2774422A1 FR2774422A1 FR9801168A FR9801168A FR2774422A1 FR 2774422 A1 FR2774422 A1 FR 2774422A1 FR 9801168 A FR9801168 A FR 9801168A FR 9801168 A FR9801168 A FR 9801168A FR 2774422 A1 FR2774422 A1 FR 2774422A1
- Authority
- FR
- France
- Prior art keywords
- converter
- filter
- particle filter
- temperature
- regeneration
- 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.)
- Granted
Links
Classifications
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- 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
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- 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
-
- 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
- F01N3/18—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 characterised by methods of operation; Control
- F01N3/20—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 characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- 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
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- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
La présente invention concerne un système d'aide à la régénération d'un filtre à particules intégré dans une ligne d'échappement d'un moteur Diesel notamment de véhicule automobile. The present invention relates to a system for assisting the regeneration of a particulate filter integrated in an exhaust line of a diesel engine, in particular of a motor vehicle.
On sait que l'une des préoccupations les plus importantes des équipementiers et des constructeurs de véhicules automobiles est la réduction de la pollution engendrée par le fonctionnement de ceux-ci. We know that one of the most important concerns of equipment manufacturers and motor vehicle manufacturers is the reduction of pollution caused by their operation.
Ceci est en particulier le cas pour les moteurs
Diesel.This is particularly the case for motors
Diesel.
Différentes solutions ont donc été envisagées pour tenter de réduire les niveaux de pollution de ces moteurs. Different solutions have therefore been envisaged in an attempt to reduce the pollution levels of these engines.
C'est ainsi par exemple que l'on a déjà proposé dans l'état de la technique, d'intégrer dans les lignes d'échappement de ces moteurs Diesel, des filtres à particules. Thus, for example, it has already been proposed in the prior art, to integrate particulate filters into the exhaust lines of these diesel engines.
Ceux-ci sont alors adaptés pour piéger les particules ou suies contenues dans les gaz d'échappement de ces moteurs et les brûler lors d'une phase de régénération du filtre. These are then adapted to trap particles or soot contained in the exhaust gases of these engines and burn them during a regeneration phase of the filter.
Différents moyens d'aide à la régénération de ces filtres ont déjà été développés dans l'état de la technique. Various means of assisting in the regeneration of these filters have already been developed in the state of the art.
Cependant, aucun de ceux-ci ne donne pleinement satisfaction. However, none of these are fully satisfactory.
Le but de l'invention est donc de résoudre ces problèmes. The object of the invention is therefore to solve these problems.
A cet effet, l'invention a pour objet un système d'aide à la régénération d'un filtre à particules intégré dans une ligne d'échappement d'un moteur Diesel notamment de véhicule automobile, caractérisé en ce que le filtre à particules est associé à un catalyseur à réchauffage électrique, disposé en amont de ce filtre et relié à des moyens de commande de son alimentation pour enclencher la régénération du filtre. To this end, the subject of the invention is a system for assisting the regeneration of a particulate filter integrated in an exhaust line of a diesel engine, in particular of a motor vehicle, characterized in that the particulate filter is associated with an electrically heated catalyst, arranged upstream of this filter and connected to means for controlling its supply to initiate regeneration of the filter.
L'invention sera mieux comprise à l'aide de la description qui va suivre donnée uniquement à titre d'exemple et faite en se référant au dessin annexé qui représente un schéma synoptique illustrant la structure générale d'un système d'aide à la régénération d'un filtre selon l'invention. The invention will be better understood with the aid of the description which follows, given solely by way of example and made with reference to the appended drawing which represents a block diagram illustrating the general structure of a system for assisting regeneration. of a filter according to the invention.
On reconnaît en effet sur la figure 1, un système d'aide à la régénération d'un filtre à particules intégré dans une ligne d'échappement d'un moteur Diesel notamment de véhicule automobile. In fact, in FIG. 1, a system for assisting the regeneration of a particulate filter integrated in an exhaust line of a diesel engine, in particular of a motor vehicle, is recognized.
Sur cette figure, le moteur est désigné par la référence générale 1 et les gaz d'échappement de celui-ci sont amenés à circuler dans une ligne d'échappement désignée par la référence générale 2, associée par exemple à un turbocompresseur 3 si le moteur en est équipé. In this figure, the engine is designated by the general reference 1 and the exhaust gases thereof are caused to circulate in an exhaust line designated by the general reference 2, associated for example with a turbocharger 3 if the engine is equipped with it.
Dans ce cas, les gaz d'échappement sont amenés à circuler dans la portion de turbine de ce turbocompresseur. In this case, the exhaust gases are caused to circulate in the turbine portion of this turbocharger.
Ensuite, les gaz d'échappement sont amenés à circuler dans un filtre à particules, désigné par la référence générale 4 sur cette figure, et présentant n'importe quelle structure appropriée connue dans l'état de la technique. Next, the exhaust gases are caused to circulate in a particle filter, designated by the general reference 4 in this figure, and having any suitable structure known in the state of the art.
Le moteur est associé à un système d'alimentation en carburant comportant par exemple un dispositif d'alimentation commune d'injecteurs associés aux cylindres du moteur, également appelé COMMON RAIL dans l'état de la technique. The engine is associated with a fuel supply system comprising for example a common supply device for injectors associated with the engine cylinders, also called COMMON RAIL in the prior art.
Ce système est désigné par la référence générale 5 sur cette figure et est donc associé à des injecteurs à commande par exemple électrique, dont l'un est désigné par la référence générale 6 sur cette figure. This system is designated by the general reference 5 in this figure and is therefore associated with injectors with electrical control, for example, one of which is designated by the general reference 6 in this figure.
Le fonctionnement de ces injecteurs est piloté par une unité centrale de traitement d'informations désignée par la référence générale 7 sur cette figure. The operation of these injectors is controlled by a central information processing unit designated by the general reference 7 in this figure.
De plus, le filtre à particules désigné par la référence générale 4, est associé à un catalyseur, désigné par la référence générale 8 sur cette figure, à réchauffage électrique, disposé en amont de ce filtre 4 dans la ligne d'échappement et relié à des moyens de commande de son alimentation pour enclencher la régénération du filtre. In addition, the particulate filter designated by the general reference 4, is associated with a catalyst, designated by the general reference 8 in this figure, with electrical heating, disposed upstream of this filter 4 in the exhaust line and connected to means for controlling its supply to start the regeneration of the filter.
Dans l'exemple de réalisation décrit, les moyens de commande de l'alimentation du catalyseur à réchauffage électrique 8 sont constitués par l'unité centrale de traitement d'informations 7. In the embodiment described, the means for controlling the supply of the electrically heated catalyst 8 are constituted by the central information processing unit 7.
On conçoit alors que lorsque cette unité détermine que le filtre à particules doit être régénéré, elle enclenche l'alimentation du catalyseur à réchauffage électrique 8 pour en augmenter la température. It is therefore understood that when this unit determines that the particle filter must be regenerated, it starts feeding the electrically heated catalyst 8 to increase the temperature.
Ceci a alors un double effet. This then has a double effect.
Le catalyseur se réchauffant, la température des gaz traversant celui-ci augmente également avant leur entrée dans le filtre à particules. As the catalyst heats up, the temperature of the gases passing through it also increases before entering the particulate filter.
De plus, cette augmentation de température du catalyseur se transmet aux suies accumulées sur celui-ci, ce qui a pour effet d'enflammer ces suies et permet également de réchauffer les gaz, ce qui peut être facilité si le catalyseur est imprégné. In addition, this increase in temperature of the catalyst is transmitted to the soot accumulated thereon, which has the effect of igniting this soot and also makes it possible to heat the gases, which can be facilitated if the catalyst is impregnated.
Par ailleurs, les suies enflammées se détachent de ce catalyseur et participent également à l'augmentation de température des gaz et du filtre à particules pour en améliorer la régénération. In addition, the ignited soots detach from this catalyst and also participate in increasing the temperature of the gases and of the particle filter to improve regeneration.
Avantageusement, le catalyseur 8 est accolé au filtre à particules 4 et celui-ci pouvant présenter n'importe quelle structure appropriée, on ne le décrira pas plus en détail par la suite. Advantageously, the catalyst 8 is attached to the particle filter 4 and the latter can have any suitable structure, it will not be described in more detail below.
Il va de soi bien entendu que d'autres modes de réalisation de ce système peuvent être envisagés. It goes without saying of course that other embodiments of this system can be envisaged.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9801168A FR2774422B1 (en) | 1998-02-02 | 1998-02-02 | SYSTEM FOR AIDING THE REGENERATION OF A PARTICLE FILTER INTEGRATED IN AN EXHAUST LINE OF A DIESEL ENGINE, PARTICULARLY A MOTOR VEHICLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9801168A FR2774422B1 (en) | 1998-02-02 | 1998-02-02 | SYSTEM FOR AIDING THE REGENERATION OF A PARTICLE FILTER INTEGRATED IN AN EXHAUST LINE OF A DIESEL ENGINE, PARTICULARLY A MOTOR VEHICLE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2774422A1 true FR2774422A1 (en) | 1999-08-06 |
FR2774422B1 FR2774422B1 (en) | 2000-04-21 |
Family
ID=9522477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9801168A Expired - Fee Related FR2774422B1 (en) | 1998-02-02 | 1998-02-02 | SYSTEM FOR AIDING THE REGENERATION OF A PARTICLE FILTER INTEGRATED IN AN EXHAUST LINE OF A DIESEL ENGINE, PARTICULARLY A MOTOR VEHICLE |
Country Status (1)
Country | Link |
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FR (1) | FR2774422B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1211393A1 (en) * | 2000-11-22 | 2002-06-05 | O-DEN Corporation | Diesel particulate removing apparatus |
EP1394373A1 (en) * | 2002-08-27 | 2004-03-03 | Audi Ag | Method for heating a soot filter in an exhaust system of an internal combustion engine - in particular a diesel engine - comprising at least a catalyst and a soot filter located downstream to gather soot |
SG116434A1 (en) * | 2000-11-30 | 2005-11-28 | O Den Corp | Diesel particulate removing apparatus. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62126218A (en) * | 1985-11-25 | 1987-06-08 | Matsushita Electric Ind Co Ltd | Exhaust gas filter |
US4686827A (en) * | 1983-02-03 | 1987-08-18 | Ford Motor Company | Filtration system for diesel engine exhaust-II |
EP0658369A2 (en) * | 1993-12-17 | 1995-06-21 | Matsushita Electric Industrial Co., Ltd. | Method for purification of exhaust gas and apparatus used for purification |
JPH09222009A (en) * | 1996-02-15 | 1997-08-26 | Nippon Soken Inc | Exhaust particulate purifying device for internal combustion engine |
JPH09317440A (en) * | 1996-05-24 | 1997-12-09 | Nippon Soken Inc | Exhaust particulate purifier for internal combustion engine |
-
1998
- 1998-02-02 FR FR9801168A patent/FR2774422B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4686827A (en) * | 1983-02-03 | 1987-08-18 | Ford Motor Company | Filtration system for diesel engine exhaust-II |
JPS62126218A (en) * | 1985-11-25 | 1987-06-08 | Matsushita Electric Ind Co Ltd | Exhaust gas filter |
EP0658369A2 (en) * | 1993-12-17 | 1995-06-21 | Matsushita Electric Industrial Co., Ltd. | Method for purification of exhaust gas and apparatus used for purification |
JPH09222009A (en) * | 1996-02-15 | 1997-08-26 | Nippon Soken Inc | Exhaust particulate purifying device for internal combustion engine |
JPH09317440A (en) * | 1996-05-24 | 1997-12-09 | Nippon Soken Inc | Exhaust particulate purifier for internal combustion engine |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 347 (M - 641) 13 November 1987 (1987-11-13) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 012 25 December 1997 (1997-12-25) * |
PATENT ABSTRACTS OF JAPAN vol. 098, no. 004 31 March 1998 (1998-03-31) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1211393A1 (en) * | 2000-11-22 | 2002-06-05 | O-DEN Corporation | Diesel particulate removing apparatus |
US6953555B2 (en) | 2000-11-22 | 2005-10-11 | O-Den Corporation | Diesel particulate removing apparatus |
CN100402808C (en) * | 2000-11-22 | 2008-07-16 | 株式会社欧登 | Particle removing device for diesel engine |
SG116434A1 (en) * | 2000-11-30 | 2005-11-28 | O Den Corp | Diesel particulate removing apparatus. |
EP1394373A1 (en) * | 2002-08-27 | 2004-03-03 | Audi Ag | Method for heating a soot filter in an exhaust system of an internal combustion engine - in particular a diesel engine - comprising at least a catalyst and a soot filter located downstream to gather soot |
US6823666B2 (en) | 2002-08-27 | 2004-11-30 | Audi Ag | Process for heating a soot filter in an exhaust gas system of an internal combustion engine, particularly a diesel engine, with at least one catalytic converter and a soot filter mounted downstream from the engine for accumulation of the soot |
Also Published As
Publication number | Publication date |
---|---|
FR2774422B1 (en) | 2000-04-21 |
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Legal Events
Date | Code | Title | Description |
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ST | Notification of lapse |
Effective date: 20131031 |