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FR2840643A1 - Equipment for supercharged engine facilitating treatment of exhaust gas comprises diversion pipe with valve connected to air admission pipe between compressor and engine and to exhaust pipe between engine and gas treatment equipment - Google Patents

Equipment for supercharged engine facilitating treatment of exhaust gas comprises diversion pipe with valve connected to air admission pipe between compressor and engine and to exhaust pipe between engine and gas treatment equipment Download PDF

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Publication number
FR2840643A1
FR2840643A1 FR0206950A FR0206950A FR2840643A1 FR 2840643 A1 FR2840643 A1 FR 2840643A1 FR 0206950 A FR0206950 A FR 0206950A FR 0206950 A FR0206950 A FR 0206950A FR 2840643 A1 FR2840643 A1 FR 2840643A1
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FR
France
Prior art keywords
engine
pipe
exhaust
compressor
equipment
Prior art date
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Granted
Application number
FR0206950A
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French (fr)
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FR2840643B1 (en
Inventor
Romuald Chaumeaux
Muro David Di
Benoit Thuault
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Renault SAS
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Renault SAS
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Priority to FR0206950A priority Critical patent/FR2840643B1/en
Publication of FR2840643A1 publication Critical patent/FR2840643A1/en
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Publication of FR2840643B1 publication Critical patent/FR2840643B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/222—Control of additional air supply only, e.g. using by-passes or variable air pump drives using electric valves only
    • 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
    • F01N3/02—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
    • F01N3/08—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
    • 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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • 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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/225—Electric control of additional air supply
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • 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
    • 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
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • F02B37/164—Control of the pumps by bypassing charging air the bypassed air being used in an auxiliary apparatus, e.g. in an air turbine
    • 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
    • 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
    • F01N2290/00—Movable parts or members in exhaust systems for other than for control purposes
    • F01N2290/02—Movable parts or members in exhaust systems for other than for control purposes with continuous rotary movement
    • F01N2290/04—Movable parts or members in exhaust systems for other than for control purposes with continuous rotary movement driven by exhaust gases
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
    • 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
    • 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
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

The supercharged engine (1) comprises an air admission pipe (2), an exhaust gas pipe (7), exhaust gas treatment equipment (8,9) located in the exhaust pipe and a supercharging system comprising a compressor (5) in the admission pipe. A diversion pipe (12) is connected to the admission pipe between the compressor and the engine and to the exhaust pipe between the engine and the treatment equipment. A valve (13) with adjustable opening is placed in the diversion pipe.

Description

inferieure.lower.

AGENCEMENT A MOTEUR SURALIMENTE FACILITANT LE  COMBUSTION ENGINE ARRANGEMENT FACILITATING

TRAITEMENT DES GAZ D'ECHAPPEMENTEXHAUST GAS TREATMENT

DESCRIPTIONDESCRIPTION

Cette invention a pour sujet un agencement a moteur suralimente dont la propriete essentielle est  The subject of this invention is a supercharged engine arrangement the essential property of which is

de favoriser le traitement des gaz d'echappement.  to favor the treatment of exhaust gases.

Les moteurs modernes d'automobiles comprennent un appareillage de traitement de gaz d'echappement qui comprend souvent un filtre a particules dans lequel des suies transportees par les gaz d'echappement vent retenues et periodiquement regenerees. Ce traitement s'effectue a temperature  Modern automobile engines include exhaust treatment equipment which often includes a particulate filter in which soot transported by exhaust gases is retained and periodically regenerated. This treatment is carried out at temperature

elevee et necessite une quantite d'oxygene suffisante.  high and requires a sufficient amount of oxygen.

Ces conditions ne vent pas touj ours remplies en pratique, surtout si le vehicule roule surtout en ville, c'est-a-dire generalement a faible charge du moteur et plutot a froid, c'est-a-dire dans des conditions ou la richesse du moteur est augmentee, ce qui fait decroltre la teneur en oxygene des gaz d'echappement. Un apport accru d'oxygene est aussi benefique pour le rendement des catalyseurs  These conditions are not always met in practice, especially if the vehicle is driven mainly in the city, that is to say generally at low engine load and rather cold, that is to say in conditions where the engine richness is increased, which decreases the oxygen content of the exhaust gases. An increased supply of oxygen is also beneficial for the performance of the catalysts

d'echappemement a froid.cold exhaust.

Il est connu de realiser un tel apport au catalyseur dans certains vehicules a essence, en aspirant de ltair atmospherique dans un conduit d'alimentation special par une pompe electrique. On doit cependant admettre que cette fa,con de proceder ntest pas avantageuse puisque la pompe est un appareil  It is known to make such a contribution to the catalyst in certain gasoline vehicles, by sucking atmospheric air in a special supply duct by an electric pump. It must however be admitted that this way of proceeding is not advantageous since the pump is an appliance

B 14027/JCIB 14027 / JCI

relativement complexe et couteux et qui depense de l'energie. Il est d'ailleurs insuffisant quand la  relatively complex and expensive and which spends energy. It is also insufficient when the

pression d'echappement est forte.exhaust pressure is high.

Une solution meilleure est done proposee avec cette invention. Wile s' applique aux moteurs sural imentes et cons iste a s out i rer une port ion du debit d'air menant au moteur dans une derivation contournant celui- ci et commandee par une vanne a fermeture reglable. L'air ayant ete comprime, il se trouve a une pression suffisante pour s'ecouler dans les gaz d' echappement a l' aval de la turbine. Il n' y a done pas de moyen de pompage de l'air soutire, mais une  A better solution is therefore proposed with this invention. Wile applies to sural iment motors and consists in providing a port of the air flow leading to the motor in a bypass bypassing it and controlled by an adjustable closing valve. The air having been compressed, it is at a pressure sufficient to flow into the exhaust gases downstream of the turbine. There is therefore no means of pumping the extracted air, but a

simple vanne qui est un moyen plus simple.  simple valve which is a simpler way.

Pour resumer, l' invention est relative en general a un agencement a moteur suralimente d'automobile, comprenant un conduit d'admission d'air menant au moteur, un conduit d'echappement de gaz quittant le moteur, un appareillage de traitement des gaz situe sur le conduit d'echappement, et un systeme de suralimentation comprenant un compresseur sur le conduit d'admission, caracterise en ce qu'il comprend un conduit de derivation du moteur, se raccordant au conduit d'admission entre le compresseur et le moteur et au conduit d'echappement de gaz entre le moteur et l'appareillage de traitement, et une vanne a ouverture  To summarize, the invention relates in general to an arrangement with a supercharged motor of an automobile, comprising an air intake duct leading to the engine, a gas exhaust duct leaving the engine, a gas treatment apparatus. located on the exhaust duct, and a supercharging system comprising a compressor on the intake duct, characterized in that it comprises an engine bypass duct, connecting to the intake duct between the compressor and the engine and to the gas exhaust pipe between the engine and the processing equipment, and an opening valve

reglable placee sur le conduit de deviation.  adjustable placed on the diversion pipe.

L'invention s' applique done a ['automobile, aussi bien aux moteurs a essence qu'aux moteurs diesel suralimentes. L'oxygene peut servir aussi bien a la regeneration d'un filtre a particules qu'a l'amorcage  The invention therefore applies to the automobile, both to petrol engines and to supercharged diesel engines. Oxygen can be used for regeneration of a particulate filter as well as for priming

d'un catalyseur.of a catalyst.

B 14027/JCIB 14027 / JCI

L'invention sera maintenant decrite par une de ses realisations au moyen de la figure unique. Un moteur 1 est alimente en air par un conduit d'admission 2 et rejette les gaz d'echappement par un conduit d' echappement 3. Le conduit d' admission 2 comprend classiquement un debitmetre 4 a l' entree, puts, en allant vers le moteur 1, un compresseur 5, un voles 6 a ['admission, et le conduit d'echappement 3 comprend une  The invention will now be described by one of its embodiments by means of the single figure. An engine 1 is supplied with air by an intake duct 2 and rejects the exhaust gases by an exhaust duct 3. The intake duct 2 conventionally comprises a flow meter 4 at the inlet, puts, going towards the engine 1, a compressor 5, an inlet 6 to the intake, and the exhaust duct 3 comprises a

turbine 7, un catalyseur 8 et un filtre a particules 9.  turbine 7, a catalyst 8 and a particle filter 9.

Des capteurs de pression et de temperature vent disposes a divers endroits de cette ligne de conduit 2 et 3, ainsi qu'il est bien connu. Le compresseur 5 et la turbine 7 peuvent faire partie d'un turbocompresseur qui exploite la forte pression des gaz d'echappement  Wind pressure and temperature sensors disposed at various locations on this line of pipe 2 and 3, as is well known. The compressor 5 and the turbine 7 can be part of a turbocharger which exploits the high pressure of the exhaust gases

pour comprimer l'air s'ecoulant vers le moteur 1.  to compress the air flowing to the motor 1.

Sinon, un compresseur mecanique peut etre employe, et la turbine peut etre omise. Enfin, il existe un conduit de recirculation des gaz d'echappement, contournant le moteur 1 et stetendant entre un raccordement au conduit d'echappement 3 entre le moteur 1 et la turbine 7, et un raccordement au conduit d'admission 2 entre le voles 6 et le moteur 1; ce conduit est muni d'une vanne 11 qui, lorsqu'elle est ouverte, permet de faire recirculer une portion du debit des gaz d'echappement  Otherwise, a mechanical compressor can be used, and the turbine can be omitted. Finally, there is an exhaust gas recirculation duct, bypassing the engine 1 and extending between a connection to the exhaust duct 3 between the engine 1 and the turbine 7, and a connection to the intake duct 2 between the flues 6 and the motor 1; this duct is provided with a valve 11 which, when open, allows a portion of the exhaust gas flow rate to be recirculated

vers le moteur 1.to motor 1.

D'apres l' invention, le moteur 1 est contourne par un conduit de derivation 12 muni d'une vanne reglable 13 commandee par un actionneur 14 en fonction d'une carte 15 sensible notamment, dans cet exemple de realisation, a la temperature regnant juste en amont du filtre a particules 9 et que mesure un  According to the invention, the motor 1 is bypassed by a bypass duct 12 provided with an adjustable valve 13 controlled by an actuator 14 according to a sensitive card 15 in particular, in this embodiment, at the prevailing temperature just upstream of the particulate filter 9 and that measures a

B 14027/JCIB 14027 / JCI

capteur 16. La carte 15 peut etre sensible a d'autres parametres, et notamment au regime du moteur et au debit du carburant pour ne favoriser l'apport d'oxygene supplementaire dans le conduit d'echappement 3 que quand cela est necessaire. Le conduit de derivation 12 s'etend entre un raccordement au conduit d' admission 2 situe entre le compresseur 5 et le moteur 1, plus precisement entre le compresseur 5 et le voles 6, et un raccordement au conduit d'echappement 3 entre la turbine 7 et l'appareillage de traitement ici compose du catalyseur  sensor 16. The card 15 can be sensitive to other parameters, and in particular to the engine speed and the fuel flow rate in order to favor the supply of additional oxygen in the exhaust pipe 3 only when necessary. The bypass duct 12 extends between a connection to the intake duct 2 located between the compressor 5 and the engine 1, more precisely between the compressor 5 and the flanges 6, and a connection to the exhaust duct 3 between the turbine 7 and the treatment apparatus here composed of the catalyst

8 et du filtre a particules 9.8 and the particle filter 9.

L' unite de commande electronique du moteur regle ltouverture du voles 6 et de la vanne 13 en fonction des reglages du moteur et du fonctionnement du systeme. On a vu qu'un apport d'oxygene etait benefique  The electronic engine control unit regulates the opening of the flaps 6 and of the valve 13 according to the engine settings and the operation of the system. We saw that an oxygen supply was beneficial

pour le fonctionnement du catalyseur 8 a froid, c'est-  for the operation of the catalyst 8 when cold,

a-dire au demarrage du vehicule. Pour le filtre a particules 9, un apport d'oxygene conduisant a une regeneration des suies qu'il retient peut etre decide quand la perte de charge qu'il occasionne, et qui est obtenue en soustrayant les mesures effectuees par des capteurs de pression en amont et en aval de lui sur le conduit d'echappement 3, atteint un seuil. La carte 15 est alors concue pour fournir l'asservissement correspondent. Il est encore concevable d'utiliser la vanne 13 pour faire varier aussi la quantite d'air parvenant au moteur 1. Cependant, le reglage du fonctionnement du moteur 1 devient plus complexe avec l' invention, ce qui fait qu'on peut preferer de n'utiliser la recirculation des gaz que quand le  ie when the vehicle is started. For the particulate filter 9, an oxygen supply leading to a regeneration of the soot which it retains can be decided when the pressure drop which it causes, and which is obtained by subtracting the measurements carried out by pressure sensors in upstream and downstream of it on the exhaust pipe 3, reaches a threshold. The card 15 is then designed to provide the corresponding servo. It is also conceivable to use the valve 13 to also vary the amount of air reaching the motor 1. However, the adjustment of the operation of the motor 1 becomes more complex with the invention, which means that it may be preferable to only use gas recirculation when the

B 14027/JCIB 14027 / JCI

soutirage par le conduit de derivation 12 est inactif, c'est-a-dire de fermer la vanne 11 des que la vanne 13  withdrawal by the bypass duct 12 is inactive, that is to say to close the valve 11 as soon as the valve 13

est ouverte.is open.

Le debit d'air passant par le conduit 12 depend en particulier de la pression de l'air quittant le compresseur 5 et du degre d'ouverture de la vanne 13, ce qui pourra justifier un fonctionnement de cette vanne 13 a n'importe quel etat entre la fermeture et  The air flow rate passing through the duct 12 depends in particular on the pressure of the air leaving the compressor 5 and the degree of opening of the valve 13, which may justify operation of this valve 13 at any state between closing and

l'ouverture extreme.extreme opening.

La carte 15 pourra aussi etre sensible au regime du moteur et au debit de carburant. Wile pourra servir a eviter ce qu' on appelle l' emballement de la regeneration, c'est-a-dire une combustion brutale des suies et permettra de reduire la quantite d'oxygene en fonction de la temperature du filtre a particules. Wile pourra enfin etre sensible a un autre capteur 17, mesurant la richesse des gaz d'echappement, pour ajuster le debit d'oxygene fourni aux valeurs favorisant la regeneration. Ledit autre capteur 17 est  Card 15 could also be sensitive to engine speed and fuel flow. Wile can be used to avoid what is called runaway regeneration, that is to say a brutal combustion of soot and will reduce the amount of oxygen depending on the temperature of the particulate filter. Wile could finally be sensitive to another sensor 17, measuring the richness of the exhaust gases, to adjust the oxygen flow rate supplied to the values favoring regeneration. Said other sensor 17 is

place sur le conduit d'echappement 3.  place on the exhaust pipe 3.

B 14027/JCIB 14027 / JCI

t 2840643t 2840643

Claims (5)

REVEND I CAT IONSRESELL I CAT IONS 1. Agencement a moteur suralimente d'automobile, comprenant un conduit d'admission (2) d'air menant au moteur (1), un conduit d'echappement (7) de gaz quittant le moteur, un appareillage (8,9) de traitement des gaz situe sur le conduit d'echappement, et un systeme de suralimentation comprenant un compresseur (5) sur le conduit d' admission, caracterise en ce qutil comprend un conduit de derivation (12) du moteur, se raccordant au conduit d'admission entre le compresseur (5) et le moteur (1) et au conduit d'echappement entre le moteur (1) et l'appareillage de traitement (8,9), et une vanne a ouverture reglable  1. Arrangement with supercharged automobile engine, comprising an air intake duct (2) leading to the engine (1), an exhaust pipe (7) for gas leaving the engine, an apparatus (8, 9) gas treatment located on the exhaust pipe, and a supercharging system comprising a compressor (5) on the intake pipe, characterized in that it comprises a bypass pipe (12) of the engine, connecting to the pipe inlet between the compressor (5) and the engine (1) and to the exhaust duct between the engine (1) and the treatment equipment (8,9), and an adjustable opening valve (13) placee sur le conduit de derivation.  (13) placed on the bypass duct. 2. Agencement selon la revendication 1, caracterise en que le conduit de derivation se raccorde au conduit d'admission entre le compresseur et un voles (6).  2. Arrangement according to claim 1, characterized in that the bypass duct is connected to the intake duct between the compressor and a flue (6). 3. Agencement selon la revendication 1 ou 2, caracterise en ce qu'il comprend un dispositif de3. Arrangement according to claim 1 or 2, characterized in that it comprises a device for reglage automatique de la vanne.automatic valve adjustment. 4. Agencement selon la revendication 3, caracterise en que le dispositif de reglage automatique comprend une carte de reglage (15) admettant comme  4. Arrangement according to claim 3, characterized in that the automatic adjustment device comprises an adjustment card (15) admitting as entree une temperature de l'appareillage.  entering a temperature of the apparatus. 5. Agencement selon l'une quelconque des  5. Arrangement according to any one of revendications 3 ou 4, caracterise en ce que le  claims 3 or 4, characterized in that the dispositif de reglage automatique comprend une carte de reglage (15) admettant comme entree une richesse des  automatic adjustment device comprises an adjustment card (15) admitting as input a wealth of
FR0206950A 2002-06-06 2002-06-06 SUPERSIFIED MOTOR ARRANGEMENT FACILITATING THE TREATMENT OF EXHAUST GASES Expired - Lifetime FR2840643B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005045208A1 (en) * 2003-10-29 2005-05-19 Robert Bosch Gmbh Method for the operation of an internal combustion engine
FR2877039A1 (en) * 2004-10-21 2006-04-28 Renault Sas Regeneration of particle filter mounted in exhaust line of automobile engine comprises initiating process when level of contamination of filter exceeds predetermined value, with temperature of filter increased to burn off particles
FR2879235A1 (en) * 2004-12-15 2006-06-16 Renault Sas Internal combustion engine e.g. gasoline engine, for motor vehicle, has exhaust air injection circuit to connect impeller, on exhaust gas recirculation circuit, to manifold with stop valve opening when another valve is closed and vice versa
EP1865169A2 (en) * 2006-06-08 2007-12-12 Deere & Company Internal combustion engine and method
FR2907844A1 (en) * 2006-10-27 2008-05-02 Renault Sas Particle filter passive regeneration method for motor vehicle, involves removing gas mixture in inlet line during normal functioning phase of internal combustion engine to introduce mixture in exhaust line in upstream of particle filter
WO2009115405A1 (en) * 2008-03-20 2009-09-24 Robert Bosch Gmbh Method for the regeneration of a diesel particle filter of an internal combustion engine as well as a corresponding device
FR2931514A3 (en) * 2008-05-22 2009-11-27 Renault Sas Exhaust gas post-treatment device e.g. particle filter, regenerating method for diesel engine of motor vehicle, involves utilizing low pressure turbocompressor for supplying air via exhaust pipe in upstream of post-treatment device
CN104405482A (en) * 2014-10-14 2015-03-11 安徽江淮汽车股份有限公司 Exhaust treatment system

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005045208A1 (en) * 2003-10-29 2005-05-19 Robert Bosch Gmbh Method for the operation of an internal combustion engine
FR2877039A1 (en) * 2004-10-21 2006-04-28 Renault Sas Regeneration of particle filter mounted in exhaust line of automobile engine comprises initiating process when level of contamination of filter exceeds predetermined value, with temperature of filter increased to burn off particles
FR2879235A1 (en) * 2004-12-15 2006-06-16 Renault Sas Internal combustion engine e.g. gasoline engine, for motor vehicle, has exhaust air injection circuit to connect impeller, on exhaust gas recirculation circuit, to manifold with stop valve opening when another valve is closed and vice versa
EP1865169A2 (en) * 2006-06-08 2007-12-12 Deere & Company Internal combustion engine and method
EP1865169A3 (en) * 2006-06-08 2009-04-29 Deere & Company Internal combustion engine and method
FR2907844A1 (en) * 2006-10-27 2008-05-02 Renault Sas Particle filter passive regeneration method for motor vehicle, involves removing gas mixture in inlet line during normal functioning phase of internal combustion engine to introduce mixture in exhaust line in upstream of particle filter
WO2009115405A1 (en) * 2008-03-20 2009-09-24 Robert Bosch Gmbh Method for the regeneration of a diesel particle filter of an internal combustion engine as well as a corresponding device
FR2931514A3 (en) * 2008-05-22 2009-11-27 Renault Sas Exhaust gas post-treatment device e.g. particle filter, regenerating method for diesel engine of motor vehicle, involves utilizing low pressure turbocompressor for supplying air via exhaust pipe in upstream of post-treatment device
CN104405482A (en) * 2014-10-14 2015-03-11 安徽江淮汽车股份有限公司 Exhaust treatment system
CN104405482B (en) * 2014-10-14 2017-04-26 安徽江淮汽车集团股份有限公司 Exhaust treatment system

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