EP2025912B1 - Abgaskreislauf eines Motors - Google Patents

Abgaskreislauf eines Motors Download PDF

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Publication number
EP2025912B1
EP2025912B1 EP08159176A EP08159176A EP2025912B1 EP 2025912 B1 EP2025912 B1 EP 2025912B1 EP 08159176 A EP08159176 A EP 08159176A EP 08159176 A EP08159176 A EP 08159176A EP 2025912 B1 EP2025912 B1 EP 2025912B1
Authority
EP
European Patent Office
Prior art keywords
gases
exhaust
valve
circuit
towards
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.)
Not-in-force
Application number
EP08159176A
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English (en)
French (fr)
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EP2025912A1 (de
Inventor
Pierre Dumoulin
Armel Le Lièvre
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2025912A1 publication Critical patent/EP2025912A1/de
Application granted granted Critical
Publication of EP2025912B1 publication Critical patent/EP2025912B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/07—Mixed pressure loops, i.e. wherein recirculated exhaust gas is either taken out upstream of the turbine and reintroduced upstream of the compressor, or is taken out downstream of the turbine and reintroduced 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
    • F02M26/13—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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • 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
    • F02M26/33—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 controlling the temperature of the recirculated gases

Definitions

  • the present invention relates to an exhaust gas circuit of a combustion engine provided with exhaust gas recirculation means.
  • the invention is more particularly suitable for compression ignition engines, said diesel and gasoline engines with an EGR function.
  • the fuel-fuel mixture (air-gas oil) in the combustion chamber is diluted with an inert gas, normally constituted by gases. burned.
  • an inert gas normally constituted by gases. burned.
  • a fraction of the exhaust gases are taken at the exhaust manifold or the exhaust line and reinjected at the intake.
  • EGR Exhaust Gas Recirculation
  • the exhaust gases are by definition hot. Now, it is well known that the emissions of nitrogen oxides from an engine are normally all the better when the intake gases are cold. Also, the recirculation line usually admits a heat exchanger so as to cool the recirculated gas fraction before mixing with the fresh gas.
  • the recirculation line most often comprises two branches, one of which is cooled, and means to control the respective flows of recirculated gases in these two branches.
  • the recirculation line also comprises means for modifying the recirculated flue gas fraction.
  • turbocharger that is to say that the fresh gases are compressed by means of a compressor energized by a turbine placed in the exhaust line just downstream of the exhaust manifold
  • two major types of architecture are possible: a so-called high-pressure architecture, according to which the bypass for the recirculation of gases is placed upstream of the turbine, or a so-called low-pressure architecture according to which the bypass is placed downstream of this turbine.
  • recirculation line architectures high or low pressure are notably presented in the publication EP 0 596 855 .
  • Several of the proposed architectures provide for equipping the recirculation line with a particulate filter, specific to this line or disposed upstream of the bypass, this type of architecture advantageously making it possible to avoid injecting particles with can in the long run foul the intake line between the compressor and the intake manifold.
  • heating the coolant would thus both improve the heating of the passenger compartment and accelerate the temperature rise of the engine.
  • the recirculation circuit comprises a series of means for opening or closing conduits, in a binary (all-or-nothing) or proportional manner.
  • these means can be deteriorated if they are exposed to unpurified gases, hence a risk of failure all the more important that these parts are exposed to very high temperature and therefore already relatively fragile.
  • the soot present in the unpurified exhaust gas can form insulating deposits on the surface of the exchanger so that the efficiency of the latter is lower, which can be particularly damaging during the phases of operation with recirculation of the gases at the intake, phases during which the exchanger has the function of preventing the fresh gases from being mixed with too hot gases, to the detriment of a good efficiency of the engine.
  • the present invention aims at a new architecture of exhaust line more robust, and therefore more economical than the architectures known in the art.
  • an exhaust gas circuit of an engine according to claim 1.
  • This circuit comprises an exhaust line provided with a particulate filter, a gas recirculation duct connected to one of its ends at the exhaust line, downstream of the particulate filter, and at its other end, to the engine intake circuit and a heat exchanger for cooling the gases in the recirculation line;
  • this circuit being remarkable in that it comprises, downstream of the heat exchanger, a tube connected to the exhaust line (called 'Tube RTE') and means for selectively controlling the flow rate of gases admitted into the pipe of recirculation and means for directing the gases to the intake circuit or to the RTE Tube.
  • downstream and upstream are given by reference to the direction of gas flow, the engine being on the exhaust side the source.
  • the circuit also comprises means for bypassing the heat exchanger for at least a fraction of the gases reinjected at the inlet.
  • These means comprise the RTE tube.
  • valves make it possible to control the respective flow rates in the various pipes of the low pressure EGR circuit.
  • a proportional valve placed in the recirculation pipe, downstream of the junction point between the RTE pipe and the recirculation pipe, a second valve placed in the RTE pipe and a proportional valve placed in the line. exhaust, downstream of the diversion constituted by the recirculation pipe and upstream of the return of the Tube RTE.
  • the use of a proportional valve for the second valve makes it possible not to cool all the recirculated gases, variant all the more advantageous that the engine would not be equipped with a high pressure EGR circuit.
  • the second valve will preferably be an all-or-nothing type valve, more robust and less expensive.
  • the means for selectively controlling the flow rate of the gases admitted into the recirculation pipe and the means for directing the gases towards the intake circuit or to the bypass comprise a 3-way valve to the junction between the bypass and the exhaust line and a proportional valve, placed in the recirculation pipe, downstream of the branch to the RTE tube.
  • Another particularly advantageous possibility is to use a 3-way / proportional mixed valve at the junction between the RTE tube and the exhaust line and a proportional valve, placed in the pipeline of recirculation, downstream of the derivation to the RTE Tube.
  • the mixed valve comprises for example a pivoting flap, slaved to an actuator and a free flap provided with a return spring.
  • the circuit comprises a 3-way valve at the junction between the RTE tube and the recirculation pipe and a proportional valve between the junction between the line and the pipe and the junction between the line and the pipe. RTE tube.
  • the figure 1 illustrates different heating requirements depending on the engine water temperature and the outside temperature
  • the figure 2 is a schematic view of an exhaust gas circuit according to the invention.
  • the figure 3 details the low pressure EGR sub-circuit of the figure 2 in a depollution mode
  • the figure 4 details the low pressure EGR sub-circuit of the figure 2 in an RTE mode
  • the figure 5 illustrates a variant of an EGR sub-circuit comprising only two valves
  • the figure 6 is a detailed view of a valve particularly suitable for the configuration of the figure 5 ;
  • the figure 7 illustrates another variant with two valves of a subcircuit according to the invention.
  • the figure 1 is a graph on which a number of rolling situations have been positioned as a function of the outside ambient temperature (ordinate) and the water temperature of the engine cooling circuit (abscissa).
  • the cabin air can be easily warmed by recovering the heat from the engine by means of the heater (heat exchanger to the engine). passenger).
  • this heating mode is often considered insufficient, especially if the vehicle is traveling relatively slowly (and therefore the temperature of the coolant is low, for example lower than about 40 ° C).
  • additional heating is desirable, which heating can be obtained by recovering a portion of the heat of the exhaust gas, which is indicated on the graph by the zone denoted "area need additional heating cabin".
  • the exhaust gases consist essentially of a mixture of water vapor and carbon dioxide (the products of the reaction of combustion of air with the fuel).
  • the cooling can be somehow "too effective” and cause condensation of a portion of the water vapor.
  • the water droplets thus formed could then be injected into the compressor of the intake line at the risk of causing it to break. Therefore for these low temperatures, whatever the temperature of the engine water, it is not desirable to proceed with a cooling of the EGR gas for the depollution.
  • the area of additional heating need of the passenger compartment therefore corresponds to conditions other than those of the EGR zone.
  • FIG. figure 2 An example of a gas circuit according to the invention is more particularly represented in FIG. figure 2 .
  • the intake gases are schematized by simple arrows while the exhaust gases are represented by solid arrows.
  • the engine 1 is provided with means for admitting the fresh gases into the cylinders, here schematized by an intake distributor 2 and means for evacuating the combustion gases, here shown schematically by an exhaust manifold 3.
  • the supply circuit normally comprises a heat exchanger, not shown here, for cooling the fresh gases heated by the compressor. Then these cooled fresh gases are led to the intake manifold.
  • the exhaust line 6 starts at the exhaust manifold.
  • the flue gases drive a turbine 7 which actuates the compressor 4.
  • Downstream of the turbine 7 is arranged a particulate filter 10 or more exactly an assembly comprising an oxidation catalyst and a particulate filter, the oxidation catalyst for oxidizing carbon monoxide and unburned hydrocarbons, and the filter to accumulate soot, consisting essentially of carbon, outside the regeneration phases during which the temperature of the exhaust gas is greater than the soot combustion temperature.
  • the exhaust gases Downstream of the particulate filter, the exhaust gases continue to run to the outside of the vehicle as shown by the arrow 11.
  • the circuit further comprises means for recycling a fraction of the exhaust gases by reinjecting them on admission.
  • these means consist of two sub-circuits called high and low pressure.
  • the high pressure sub-circuit 12 (EGR-HP) comprises a pipe connecting the exhaust manifold 3 to the inlet manifold 2, a proportional valve 13 allowing a flow control. Note that the connection with the exhaust part could also be carried out at any point upstream of the turbine 7.
  • the high pressure valve can be closed EGR when it is desired to cool the gases, and adjusting the respective flow rates between the low-pressure and high-pressure branches, a fine adjustment of the temperature is possible if desired.
  • the low pressure EGR sub-circuit is for its part constituted by a pipe 14 which connects the exhaust line 6 to the intake pipe 4, between a point (or junction) 15 of the exhaust line downstream of the filter particle and a point 16 of the intake pipe upstream of the compressor.
  • the pipe 14 passes through a heat exchanger 17 for cooling the gases flowing in the pipe.
  • This heat exchanger 17 is part of the cooling circuit, which also has the main function of cooling the engine and which passes through different heat transfer zones, heating up when it cools the oil and the internal engine material or gases. exhaust and being cooled at the radiator of the vehicle and possibly at the fresh air intake into the passenger compartment when heating is controlled.
  • a tube (called RTE tube) 18 connects a point (junction) 19 of the exhaust line 6, downstream of the point 15, and a point 20 (junction) of the pipe 14 downstream of the heat exchanger 17.
  • the low pressure EGR circuit shown in FIG. figure 2 has 3 valves.
  • a first valve 21, proportional valve type, is placed for example just upstream of point 16. In the open position, it allows the recycling of gases, and will subsequently be called EGR valve (or BP EGR valve).
  • the second valve 22, also referred to hereafter as RTE valve, may be of the all-or-nothing type as will be explained later.
  • a valve 23 called pressure drop valve, of the proportional type of the proportional type.
  • the gas streams will typically be as shown in FIG. figure 3 , that is to say that the BP EGR valve (21) is partially open and the valve 23 partially open (it being understood that the flow towards the terminal part of the pot exhaust of the vehicle can only be partially and not completely closed), so that a portion of the gas is diverted to the pipe 14.
  • the valve 22 If the valve 22 is in the closed position, all the gases reintroduced at the intake upstream of the compressor is cooled by the EGR exchanger.
  • the HP EGR line is also functional and the gases that pass through it are not cooled, considering that in the architecture proposed here, the gases are directly readmitted into the intake manifold and are therefore not not overheated by the compressor.
  • valve 22 is open, a part of the recirculated gases in the low pressure line can pass directly through the tube 18 which thus acts as a bypass of the EGR exchanger which allows a better control of the temperature of the gases. exhaust at the time of their reintroduction into the intake pipe.
  • a 3-way valve 30 is disposed at the point 19 and a proportional valve 31 is disposed between the points 20 and 16 of the pipe 14.
  • the circuit is analogous to a "normal" circuit (neither RTE nor EGR) when the proportional valve 31 is closed (diagram 5A) or similar to an EGR circuit when this valve is partially open (diagram 5B).
  • the 3-way valve closes the line 4
  • the proportional valve being closed, all the gases pass through the pipe 14 and return to the line 6 by means of the tube 18, the circuit is then in position RTE (diagram 5C).
  • This double-shutter valve thus comprises a pivoting flap 115 in the clockwise direction about an axis of rotation perpendicular to the flap, the movement of the flap being slaved to a pneumatic or electric actuator, not shown here.
  • the actuator thus makes it possible to open the flap 115 to control the fraction of the exhaust gas redirected towards the duct 14.
  • a second flap 121 is also mounted around the axis of rotation, this flap not being controlled by a actuator but simply provided with a return spring tending to press it in the closed position of the tube 18.
  • FIG. 7 Another variant, illustrated in figure 7 consists in using at point 20 a 3-way valve 41 and between point 15 and point 19 a proportional valve 42.
  • the invention makes it possible both to make the best use of the heat of the exhaust gases when there is a need to recover it without dedicating a heat exchanger specific to this function while being compatible with recirculation particularly high which is very favorable from the point of view of depollution.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (9)

  1. Auspuffgaskreislauf eines Motors, Folgendes aufweisend:
    • eine Auspuffanlage (6);
    • eine Kanalisation (14) zur Rezirkulation der Gase, die an einem ihrer Enden an die Auspuffanlage und an ihrem anderen Ende an den Motoreinlasskreislauf (4) angeschlossen ist;
    • einen Wärmeaustauscher (17) zum Kühlen der Gase in der Rezirkulationskanalisation (14),
    und der stromaufwärts des Wärmeaustauschers (17) ein RTE-Rohr (18) für einen Rücklauf der Rezirkulationskanalisation zu der Auspuffanlage (6) aufweist, und Mittel, um den Durchsatz der Gase, die in die Rezirkulationskanalisation eingelassen werden, selektiv zu steuern, Mittel, um die Gase zu dem Einlasskreislauf oder zu dem RTE-Rohr zu lenken,
    dadurch gekennzeichnet, dass
    • die Auspuffanlage mit einem Partikelfilter (10) versehen ist;
    • die Rezirkulationskanalisation (14) der Gase an ihrem Ende, das mit der Auspuffanlage verbunden ist, stromabwärts des Partikelfilters (10) verbunden ist;
    • der Kreislauf Mittel aufweist, um den Wärmeaustauscher für mindestens einen Bruchteil der Gase, die rezirkuliert und zum Einlass des Motors neu zugelassen werden, zu umgehen, wobei die Umgehungsmittel des Wärmeaustauschers das RTE-Rohr (18) enthalten.
  2. Kreislauf nach Anspruch 1, dadurch gekennzeichnet, dass die Umgehungsmittel des Wärmeaustauschers einen Rezirkulationskreislauf (12) aufweisen, der einerseits mit dem Einlasskreislauf des Motors und andererseits mit dem Auspuffsammelrohr oder einem Punkt der Auspuffanlage stromaufwärts des Partikelfilters und einer eventuellen Turbine des Ladesystems verbunden ist.
  3. Kreislauf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zum selektiven Steuern des Durchsatzes der Gase, die in die Rezirkulationskanalisation eingelassen werden, und die Mittel zum Lenken der Gase zu dem Einlasskreislauf oder zu der Umgehung ein Proportionalventil (21) aufweisen, das in der Kanalisation (14) stromabwärts des Verbindungspunkts zwischen der Umgehung (18) und der Kanalisation (14) angeordnet ist, ein Ventil (22), das in dem RTE-Rohr (18) platziert ist und ein Proportionalventil (23), das in der Auspuffanlage (6) stromabwärts der Abzweigung zu der Rezirkulationskanalisation (14) und stromaufwärts des Rücklaufs des RTE-Rohrs platziert ist.
  4. Kreislauf nach Anspruch 3, dadurch gekennzeichnet, dass das Ventil (22) ein Ventil des Typs Alles oder Nichts ist.
  5. Kreislauf nach Anspruch 3, dadurch gekennzeichnet, dass das Ventil (22) ein Proportionalventil ist.
  6. Kreislauf nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Mittel zum selektiven Steuern des Durchsatzes der in die Rezirkulationskanalisation eingelassenen Gase und die Mittel zum Lenken der Gase zu dem Einlasskreislauf oder zu dem RTE-Rohr ein 3-Wege-Ventil (30) an der Verbindung zwischen dem RTE-Rohr (18) und der Auspuffanlage (6) und ein Proportionalventil (31) aufweisen, das in der Rezirkulationskanalisation (14) stromabwärts der Abzweigung zu der Umgehung (18) platziert ist.
  7. Kreislauf nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Mittel zum selektiven Steuern des Durchsatzes der Gase, die in die Rezirkulationskanalisation eingelassen werden, und die Mittel zum Lenken der Gase zu dem Einlasskreislauf oder zu dem RTE-Rohr ein gemischtes 3-Wege-/Proportionalventil (30) an der Verbindung zwischen dem RTE-Rohr (18) und der Auspuffanlage (6) und ein Alles-oder-Nichts-Ventil (31) aufweisen, das in der Rezirkulationskanalisation (14) stromabwärts der Abzweigung zu der Umgehung (18) platziert ist.
  8. Kreislauf nach Anspruch 7, dadurch gekennzeichnet, dass das gemischte Ventil eine Schwenkklappe (115) aufweist, die von einem Stellantrieb gesteuert wird, und eine freie Klappe (121), die mit einer Rückholfeder versehen ist.
  9. Kreislauf nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Mittel zum selektiven Steuern des Durchsatzes der Gase, die in die Rezirkulationskanalisation eingelassen werden, und die Mittel zum Lenken der Gase zu dem Einlasskreislauf oder zu der Umgehung ein 3-Wege-Ventil (41) an der Verbindung (20) zwischen der Umgehung (18) und der Rezirkulationskanalisation (14) und ein Proportionalventil (42) zwischen der Verbindung zwischen der Auspuffanlage (6) und der Kanalisation (14) und der Verbindung (19) zwischen der Auspuffanlage (6) und der Umgehung (18) aufweisen.
EP08159176A 2007-07-30 2008-06-27 Abgaskreislauf eines Motors Not-in-force EP2025912B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0756815A FR2919681B1 (fr) 2007-07-30 2007-07-30 Circuit des gaz d'echappement d'un moteur

Publications (2)

Publication Number Publication Date
EP2025912A1 EP2025912A1 (de) 2009-02-18
EP2025912B1 true EP2025912B1 (de) 2011-11-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08159176A Not-in-force EP2025912B1 (de) 2007-07-30 2008-06-27 Abgaskreislauf eines Motors

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EP (1) EP2025912B1 (de)
AT (1) ATE533936T1 (de)
FR (1) FR2919681B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920834B1 (fr) * 2007-09-12 2012-10-26 Valeo Sys Controle Moteur Sas Dispositif et procede de recirculation des gaz d'echappement d'un moteur thermique
FR2924169B1 (fr) * 2007-11-28 2010-02-26 Renault Sas Dispositif et procede de depollution et de chauffage pour vehicule automobile
DE102009006013A1 (de) 2009-01-23 2010-08-05 Pierburg Gmbh Abgasklappenvorrichtung und Abgaswärmerückgewinnungssystem einer Verbrennungskraftmaschine
EP2302190B1 (de) 2009-09-25 2013-12-25 Behr GmbH & Co. KG Abgasrückführsystem
DE102010036946A1 (de) * 2010-08-11 2012-02-16 Ford Global Technologies, Llc. Hochdruck-Abgasrückführsystem mit Wärmerückgewinnung
FR2992357B1 (fr) * 2012-06-22 2015-08-21 Peugeot Citroen Automobiles Sa Procede de gestion de l'admission d'air et d'une boucle du systeme de recirculation des gaz d'echappement d'un moteur
WO2014171907A1 (en) * 2013-04-16 2014-10-23 Ford Otomotiv Sanayi Anonim Sirketi An exhaust gas recirculation system with variable flow rate
FR3033002B1 (fr) * 2015-02-25 2019-05-17 Valeo Systemes Thermiques Dispositif de gestion thermique de l'air d'admission d'un moteur.
DE102016218990A1 (de) 2016-09-30 2018-04-05 Ford Global Technologies, Llc Aufgeladene Brennkraftmaschine mit gekühlter Abgasrückführung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596855A1 (de) * 1992-11-02 1994-05-11 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Brennkraftmaschine mit Abgasturbolader
FR2770582B1 (fr) 1997-10-31 2000-01-28 Valeo Thermique Moteur Sa Ligne d'echappement et de recirculation des gaz pour moteur de vehicule automobile
JP2001280200A (ja) * 2000-03-30 2001-10-10 Aisin Seiki Co Ltd エンジンの排気ガス循環装置
US6899090B2 (en) * 2002-08-21 2005-05-31 Honeywell International, Inc. Dual path EGR system and methods
FR2876416B1 (fr) * 2004-10-11 2007-01-26 Renault Sas Moteur a combustion interne suralimente dote d'un circuit de recirculation de gaz brules
FR2885178A1 (fr) * 2005-04-27 2006-11-03 Renault Sas Groupe motopropulseur comportant un circuit de nettoyage d'un circuit de recirculation des gaz d'echappement
DE102005029322A1 (de) * 2005-06-24 2006-12-28 Behr Gmbh & Co. Kg Vorrichtung zur Rückführung und Kühlung von Abgas für eine Brennkraftmaschine

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ATE533936T1 (de) 2011-12-15
EP2025912A1 (de) 2009-02-18
FR2919681B1 (fr) 2009-10-09
FR2919681A1 (fr) 2009-02-06

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