EP2245292A1 - Motor vehicle internal combustion engine egr loop - Google Patents

Motor vehicle internal combustion engine egr loop

Info

Publication number
EP2245292A1
EP2245292A1 EP08872763A EP08872763A EP2245292A1 EP 2245292 A1 EP2245292 A1 EP 2245292A1 EP 08872763 A EP08872763 A EP 08872763A EP 08872763 A EP08872763 A EP 08872763A EP 2245292 A1 EP2245292 A1 EP 2245292A1
Authority
EP
European Patent Office
Prior art keywords
compressor
egr
loop
exhaust
engine
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Withdrawn
Application number
EP08872763A
Other languages
German (de)
French (fr)
Inventor
Samuel Leroux
Laurent Albert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes de Controle Moteur SAS
Original Assignee
Valeo Systemes de Controle Moteur SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Publication of EP2245292A1 publication Critical patent/EP2245292A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves
    • 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
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0418—Layout of the intake air cooling or coolant circuit the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • 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
    • 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
    • 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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage

Definitions

  • the invention relates to the EGR loop of an internal combustion engine of a motor vehicle, comprising the engine, a exhaust gas exhaust manifold, a turbo-compressor turbine, the exhaust gas recirculation loop. (EGR), with a cooler, a compressor of the turbo-compressor, receiving a portion of the exhaust gas and fresh air and in which the pressure of the mixture is increased, an intake manifold of the engine receiving the air of the compressor.
  • EGR exhaust gas exhaust manifold
  • turbo-compressor turbine the exhaust gas recirculation loop.
  • the EGR loop aims to reduce the emission of nitrogen dioxide, by reducing the combustion temperature, by slowing down the combustion of the combustion mixture and absorbing part of the calories.
  • the cooler of the EGR loop makes it possible to drop the combustion temperature at high speed
  • the EGR loop comprises a low pressure three-way valve, downstream of the turbine of the turbo-compressor and a soot-retaining particle filter in the exhaust gas before regeneration of the gases thus cleaned.
  • the particulate filter was located near the engine, or even built into the engine, and the EGR valve downstream of the exhaust.
  • EGR valve three-way one-way valves (single-vane) and three-way two-component valves (double flap) are known, but more complex.
  • the problem posed by the applicant is the removal of the engine particulate filter, that is to say in the passage of the exhaust line under the vehicle body, and therefore the problem of the return to the engine of the engine. cleaned gas.
  • the invention relates to an EGR loop of the type mentioned above, with an exhaust gas cleaning particle filter downstream of the turbine and a low-pressure single-valve three-way valve, loop characterized by the fact that the valve is arranged upstream of the compressor, connected to it by its output and receiving on its two inputs of the air and cleaned exhaust gases and cooled.
  • the three-way EGR valve is a cold valve, not hot, which is a valve of a lower cost, with electronics that no longer needs to be cooled.
  • the three-way valve and its monovalve are arranged to operate according to one of the three modes i) intake into the fresh air engine only, ii) d admixture of air and EGR gas and iii) EGR gas inlet only.
  • FIG. 1 shows, in a simplified manner, the EGR loop of the invention
  • FIG. 2 shows the three-way valve monovalve loop of Figure 1 in the fresh air intake state only
  • FIG. 3 shows the three-way single-valve valve of the loop of FIG. 1 in the intake state of a mixture of fresh air and EGR gas; and
  • FIG. 4 represents the three-way valve of the loop. of Figure 1 in the state of admission of EGR gas only.
  • the loop of FIG. 1 comprises a vehicle engine 1, with its exhaust manifold 2 and its intake manifold 3, a turbo-compressor 4 with a turbine 5, downstream of the exhaust manifold, and a compressor 6 , upstream of the intake manifold, a particulate filter 7, downstream of the turbine 5 and which is connected, on the other side, to the muffler of the vehicle and to an EGR bypass line 8, comprising here an EGR cooler 9, and a low pressure three-way valve 10, connected by its output to the compressor 6 and, through its two inputs, to the outlet of the EGR cooler 9 and to a fresh air inlet 11.
  • the turbine 5 is driven in rotation by the exhaust gas, to drive in turn the compressor 6, connected at the output to the intake manifold 3 here by a water charge air cooler 12, which can also be short-circuited at means of a valve 13.
  • the low pressure three-way valve 10 comprises a body 14 connected to a first fresh air inlet 15, to a second cleaned and regenerated exhaust gas inlet EGR 16 and to an outlet 17 which is connected to the intake manifold 3 of the motor.
  • the body 14 here has a section substantially circular and a monovolet 18 is mounted therein rotatably around an axis 21 . under the action of an actuator (not shown).
  • the shutter 18 is adapted to close all or part of either of the two inputs 15, 16.
  • the actuator is controlled by a control system and position sensors are located in the valve to determine the position of the part 18.
  • the three-way valve 10 may have a different configuration of the present example without departing from the scope of the invention, in particular the pipes 15, 16, 17 may vary in number and position. Similarly, the monovalile 18 may have a curved shape or have several inclined faces, depending on the arrangement of these pipes 15, 16, 17.

Abstract

Motor vehicle internal combustion engine EGR loop comprising the engine (1), a combustion gases exhaust manifold (2), a turbine (5) of a turbocharger (4), the exhaust gas recirculation (EGR) loop (8), with an intercooler (9), a compressor (6) of the turbocharger, to receive some of the exhaust gases and fresh air, and in which the pressure of the mixture is increased, an engine inlet manifold (3) to receive the air from the compressor, with a particulate filter (7) for cleaning the exhaust gases downstream of the turbine (5) and a single-shutter low-pressure three-way valve. The valve (10) is positioned upstream of the compressor (6), connected to it via its outlet (17) to receive, at its two inlets (15, 16), fresh air and the cleaned and cooled exhaust gases.

Description

Boucle EGR d'un moteur à combustion interne d'un véhicule automobile EGR loop of an internal combustion engine of a motor vehicle
L'invention concerne la boucle EGR d'un moteur à combustion interne d'un véhicule automobile, comprenant le moteur, un collecteur d'échappement des gaz de combustion, une turbine de turbo-compresseur, la boucle de recirculation des gaz d'échappement (EGR), avec un refroidisseur, un compresseur du turbo-compresseur, recevant une partie des gaz d'échappement et de l'air frais et dans lequel la pression du mélange est augmentée, un collecteur d'admission du moteur recevant l'air du compresseur.The invention relates to the EGR loop of an internal combustion engine of a motor vehicle, comprising the engine, a exhaust gas exhaust manifold, a turbo-compressor turbine, the exhaust gas recirculation loop. (EGR), with a cooler, a compressor of the turbo-compressor, receiving a portion of the exhaust gas and fresh air and in which the pressure of the mixture is increased, an intake manifold of the engine receiving the air of the compressor.
La boucle EGR vise à réduire l'émission de dioxyde d'azote, par diminution de la température de combustion, par ralentissement de la combustion du mélange comburant et absorption d'une partie des calories. Le refroidisseur de la boucle EGR permet de faire chuter la température de combustion à fort régimeThe EGR loop aims to reduce the emission of nitrogen dioxide, by reducing the combustion temperature, by slowing down the combustion of the combustion mixture and absorbing part of the calories. The cooler of the EGR loop makes it possible to drop the combustion temperature at high speed
(forte charge).(heavy load).
En général, la boucle EGR comporte une vanne trois voies basse pression, en aval de la turbine du turbo-compresseur et un filtre à particules de retenue des suies se trouvant dans les gaz d'échappement avant régénération des gaz ainsi nettoyés.In general, the EGR loop comprises a low pressure three-way valve, downstream of the turbine of the turbo-compressor and a soot-retaining particle filter in the exhaust gas before regeneration of the gases thus cleaned.
L'originalité de l'invention réside dans le fait qu'elle est née d'un problème particulier mais qui a ensuite été négligé pour définir l'invention.The originality of the invention lies in the fact that it arose from a particular problem but was later neglected to define the invention.
Jusqu'à maintenant, le filtre à particules se trouvait près du moteur, voire intégré au moteur, et la vanne EGR en aval de l'échappement. Comme vanne EGR, on connaît les vannes trois voies à un volet (monovolet) et les vannes trois voies à deux volets (double volet), mais plus complexes. Le problème que s'est posé la demanderesse est réloignement du filtre à particules du moteur, c'est-à-dire dans le passage de la ligne d'échappement sous la caisse du véhicule, et donc le problème de la remontée au moteur des gaz nettoyés.Until now, the particulate filter was located near the engine, or even built into the engine, and the EGR valve downstream of the exhaust. As EGR valve, three-way one-way valves (single-vane) and three-way two-component valves (double flap) are known, but more complex. The problem posed by the applicant is the removal of the engine particulate filter, that is to say in the passage of the exhaust line under the vehicle body, and therefore the problem of the return to the engine of the engine. cleaned gas.
C'est dans ces conditions que la demanderesse a eu l'idée de déplacer la vanne EGR trois voies monovolet de l'échappement à l'admission, en d'autres termes de l'aval de la turbine à l'amont du compresseur du turbo-compresseur, sans pour autant lier ce déplacement à la position du filtre à particules par rapport au moteur.It is in these conditions that the plaintiff had the idea of moving the three-way EVA valve from the exhaust to the intake, in other words from the downstream of the turbine upstream of the compressor. turbo-compressor, without linking this displacement to the position of the particulate filter relative to the engine.
Ainsi, l'invention concerne une boucle EGR du type mentionné ci- dessus, avec un filtre à particules de nettoyage des gaz d'échappement en aval de la turbine et une vanne trois voies monovolet basse pression, boucle caractérisée par le fait que la vanne est disposée en amont du compresseur, reliée à lui par sa sortie et recevant sur ses deux entrées de l'air trais et les gaz d'échappement nettoyés et refroidis.Thus, the invention relates to an EGR loop of the type mentioned above, with an exhaust gas cleaning particle filter downstream of the turbine and a low-pressure single-valve three-way valve, loop characterized by the fact that the valve is arranged upstream of the compressor, connected to it by its output and receiving on its two inputs of the air and cleaned exhaust gases and cooled.
Grâce à l'invention, la vanne EGR trois voies est une vanne froide, et non plus chaude, qui est une vanne d'un coût plus réduit, avec une électronique qui n'a plus besoin d'être refroidie.Thanks to the invention, the three-way EGR valve is a cold valve, not hot, which is a valve of a lower cost, with electronics that no longer needs to be cooled.
Dans la forme de réalisation préférée de la boucle EGR de l'invention, la vanne trois voies et son monovolet sont agencés pour fonctionner selon l'un des trois modes i) d'admission dans le moteur d'air frais uniquement, ii) d'admission d'un mélange d'air et de gaz EGR et iii) d'admission de gaz EGR uniquement. L'invention sera, mieux, comprise à l'aide de la description suivante de la forme de réalisation préférée de la boucle EGR de l'invention, en référence au dessin, sur lequelIn the preferred embodiment of the EGR loop of the invention, the three-way valve and its monovalve are arranged to operate according to one of the three modes i) intake into the fresh air engine only, ii) d admixture of air and EGR gas and iii) EGR gas inlet only. The invention will be better understood from the following description of the preferred embodiment of the EGR loop of the invention, with reference to the drawing, in which
- la figure 1 représente, de façon simplifiée, la boucle EGR de l'invention;- Figure 1 shows, in a simplified manner, the EGR loop of the invention;
- la figure 2 représente la vanne trois voies monovolet de la boucle de la figure 1 dans l'état d'admission d'air frais uniquement;- Figure 2 shows the three-way valve monovalve loop of Figure 1 in the fresh air intake state only;
- la figure 3 représente la vanne trois voies monovolet de la boucle de la figure 1 dans l'état d'admission d'un mélange d'air frais et de gaz EGR et - la figure 4 représente la vanne trois voies monovolet de la boucle de la figure 1 dans l'état d'admission de gaz EGR uniquement.FIG. 3 shows the three-way single-valve valve of the loop of FIG. 1 in the intake state of a mixture of fresh air and EGR gas; and FIG. 4 represents the three-way valve of the loop. of Figure 1 in the state of admission of EGR gas only.
La boucle de la figure 1 comporte un moteur de véhicule 1, avec son collecteur d'échappement 2 et son collecteur d'admission 3, un turbo- compresseur 4 avec une turbine 5, en aval du collecteur d'échappement, et un compresseur 6, en amont du collecteur d'admission, un filtre à particules 7, en aval de la turbine 5 et qui est relié, de l'autre côté, au pot d'échappement du véhicule et à une ligne de dérivation EGR 8, comportant ici un refroidisseur EGR 9, et une vanne trois voies basse pression 10, reliée par sa sortie au compresseur 6 et, par ses deux entrées, à la sortie du refroidisseur EGR 9 et à une entrée d'air frais 11. La turbine 5 est entraînée en rotation par les gaz d'échappement, pour entraîner à son tour le compresseur 6, relié en sortie au collecteur d'admission 3 ici par un refroidisseur d'air de charge à eau 12, qui peut d'ailleurs être court - circuité au moyen d'une vanne 13.The loop of FIG. 1 comprises a vehicle engine 1, with its exhaust manifold 2 and its intake manifold 3, a turbo-compressor 4 with a turbine 5, downstream of the exhaust manifold, and a compressor 6 , upstream of the intake manifold, a particulate filter 7, downstream of the turbine 5 and which is connected, on the other side, to the muffler of the vehicle and to an EGR bypass line 8, comprising here an EGR cooler 9, and a low pressure three-way valve 10, connected by its output to the compressor 6 and, through its two inputs, to the outlet of the EGR cooler 9 and to a fresh air inlet 11. The turbine 5 is driven in rotation by the exhaust gas, to drive in turn the compressor 6, connected at the output to the intake manifold 3 here by a water charge air cooler 12, which can also be short-circuited at means of a valve 13.
La vanne trois voies basse pression 10 comporte un corps 14 relié à une première entrée d'air frais 15, à une deuxième entrée de gaz d'échappement EGR nettoyés et régénérés 16 et à une sortie 17 qui est raccordée au collecteur d'admission 3 du moteur. Le corps 14 présente ici une section sensiblement circulaire .et un monovolet 18 y est monté à l'intérieur rotatif autour, d'un axe 21. sous l'action d'un actionneur (non représenté). Le volet 18 est adapté à obturer en tout ou partie l'une ou l'autre des deux entrées 15, 16. L'actionneur est contrôlé par un système de commande et des capteurs de position sont implantés dans la vanne pour déterminer la position du volet 18.The low pressure three-way valve 10 comprises a body 14 connected to a first fresh air inlet 15, to a second cleaned and regenerated exhaust gas inlet EGR 16 and to an outlet 17 which is connected to the intake manifold 3 of the motor. The body 14 here has a section substantially circular and a monovolet 18 is mounted therein rotatably around an axis 21 . under the action of an actuator (not shown). The shutter 18 is adapted to close all or part of either of the two inputs 15, 16. The actuator is controlled by a control system and position sensors are located in the valve to determine the position of the part 18.
Sur la figure 2, uniquement de l'air frais (15) est admis dans le collecteur d'admission 3. L'entré 16 est obturée par le volet 18.In FIG. 2, only fresh air (15) is admitted into the intake manifold 3. The inlet 16 is closed by the flap 18.
Sur la figure 3, un mélange d'air frais (15) et de gaz d'échappementIn FIG. 3, a mixture of fresh air (15) and exhaust gas
(16) est admis dans le collecteur d'admission. La chute de pression entre l'entrée et l'échappement est suffisante pour assurer un bon taux EGR.(16) is admitted in the intake manifold. The pressure drop between the inlet and the exhaust is sufficient to ensure a good EGR rate.
Sur la figure 4, pour augmenter la chute de pression entre l'entrée et l'échappement et assurer un bon taux EGR, seuls les gaz d'échappement sont admis dans le collecteur d'admission 3. L'entrée d'air frais 15 est obturée par le volet 18.In FIG. 4, to increase the pressure drop between the inlet and the exhaust and to ensure a good EGR rate, only the exhaust gases are admitted into the intake manifold 3. The fresh air inlet 15 is closed by the flap 18.
La vanne trois voies 10 peut présenter une configuration différente du présent exemple sans pour autant sortir du cadre de l'invention, notamment les conduites 15, 16, 17 peuvent varier en nombre et en position. De même, le monovolet 18 peut avoir une forme courbe ou présenter plusieurs pans inclinés, en fonction de la disposition de ces conduites 15, 16, 17. The three-way valve 10 may have a different configuration of the present example without departing from the scope of the invention, in particular the pipes 15, 16, 17 may vary in number and position. Similarly, the monovalile 18 may have a curved shape or have several inclined faces, depending on the arrangement of these pipes 15, 16, 17.

Claims

Revendications . Claims.
1. Boucle EGR d'un moteur à combustion interne d'un véhicule automobile, comprenant le moteur (1), un collecteur (2) d'échappement des gaz de combustion, une turbine (5) de turbo-compresseur (4), la boucle (8) de recirculation des gaz d'échappement (EGR)5 avec un refroidisseur (9), un compresseur (6) du turbo-compresseur, pour recevoir une partie des gaz d'échappement et de l'air frais et dans lequel la pression du mélange est augmentée, un collecteur d'admission (3) du moteur pour recevoir l'air du compresseur, avec un filtre a particules (7) de nettoyage des gaz d'échappement en aval de la turbine (5) et une vanne trois voies monovolet basse pression, boucle caractérisée par le fait que la vanne (10) est disposée en amont du compresseur (6), reliée à lui par sa sortie (17) pour recevoir sur ses deux entrées (15, 16) de l'air frais et les gaz d'échappement nettoyés et refroidis.1. EGR loop of an internal combustion engine of a motor vehicle, comprising the engine (1), a collector (2) for exhaust of the combustion gases, a turbine (5) of a turbo-compressor (4), the loop (8) for exhaust gas recirculation (EGR) 5 with a cooler (9), a compressor (6) of the turbo-compressor for receiving a portion of the exhaust gas and fresh air and wherein the mixing pressure is increased, an intake manifold (3) of the engine for receiving air from the compressor, with an exhaust gas cleaning particle filter (7) downstream of the turbine (5) and a three-way valve low pressure single-loop, characterized by the fact that the valve (10) is arranged upstream of the compressor (6), connected to it by its output (17) for receiving on its two inputs (15, 16) of fresh air and exhaust gases cleaned and cooled.
2. Boucle EGR selon la revendication 1, dans laquelle la vanne trois voies (10) et son monovolet (18) sont agencés pour fonctionner selon l'un des trois modes i) d'admission dans le moteur d'air frais uniquement, ii) d'admission d'un mélange d'air et de gaz EGR et iii) d'admission de gaz EGR uniquement. An EGR loop according to claim 1, wherein the three-way valve (10) and its monovalve (18) are arranged to operate in one of three modes i) of admission into the fresh air motor only, ii ) a mixture of air and EGR gas and iii) EGR gas inlet only.
EP08872763A 2008-01-03 2008-12-18 Motor vehicle internal combustion engine egr loop Withdrawn EP2245292A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0800025A FR2926113A1 (en) 2008-01-03 2008-01-03 EGR LOOP OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
PCT/FR2008/001779 WO2009106725A1 (en) 2008-01-03 2008-12-18 Motor vehicle internal combustion engine egr loop

Publications (1)

Publication Number Publication Date
EP2245292A1 true EP2245292A1 (en) 2010-11-03

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ID=39691058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872763A Withdrawn EP2245292A1 (en) 2008-01-03 2008-12-18 Motor vehicle internal combustion engine egr loop

Country Status (7)

Country Link
US (1) US20110061380A1 (en)
EP (1) EP2245292A1 (en)
JP (1) JP2011508849A (en)
KR (1) KR20100096277A (en)
CN (1) CN101960132A (en)
FR (1) FR2926113A1 (en)
WO (1) WO2009106725A1 (en)

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FR2926114B1 (en) 2008-01-03 2012-12-14 Valeo Sys Controle Moteur Sas EGR LOOP OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
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US20110061380A1 (en) 2011-03-17
KR20100096277A (en) 2010-09-01

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