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EP1899595B1 - Dispositif de recyclage et de refroidissement de gaz d'echappement conçu pour un moteur a combustion interne - Google Patents

Dispositif de recyclage et de refroidissement de gaz d'echappement conçu pour un moteur a combustion interne Download PDF

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Publication number
EP1899595B1
EP1899595B1 EP06762098.9A EP06762098A EP1899595B1 EP 1899595 B1 EP1899595 B1 EP 1899595B1 EP 06762098 A EP06762098 A EP 06762098A EP 1899595 B1 EP1899595 B1 EP 1899595B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
exhaust gas
valve
cooling
gas
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
EP06762098.9A
Other languages
German (de)
English (en)
Other versions
EP1899595A1 (fr
Inventor
Jochen Eitel
Markus Flik
Peter Geskes
Thomas Heckenberger
Dieter Heinle
Jens Ruckwied
Andreas Thumm
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1899595A1 publication Critical patent/EP1899595A1/fr
Application granted granted Critical
Publication of EP1899595B1 publication Critical patent/EP1899595B1/fr
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
    • F02M26/13—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
    • F02M26/24—Layout, e.g. schematics with two or more coolers
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/08—EGR systems specially adapted for supercharged engines for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional 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
    • F02M26/22—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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with 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
    • 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
    • F02B29/0412—Multiple heat exchangers arranged in parallel or in series
    • 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
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine

Definitions

  • the invention relates to a device for returning and cooling exhaust gas of an internal combustion engine ( JP 11 200 955 ).
  • the exhaust gas recirculation (abbreviation: EGR), in particular the cooled exhaust gas recirculation is used in today's vehicles due to legal regulations, in order to reduce the particle and pollutant, in particular nitrogen oxide emissions.
  • EGR exhaust gas recirculation
  • the known EGR system has an exhaust gas turbocharger for a diesel engine and an EGR line with an EGR valve, which is arranged between the engine and the exhaust gas turbine.
  • the recirculated exhaust gas is preferably cooled in two stages, ie in two exhaust gas heat exchangers, which are each cooled by a separate coolant circuit and designed as a high-temperature and low-temperature exhaust gas cooler are.
  • the cooled, recirculated exhaust gas is combined with compressed and cooled charge air and fed to the intake manifold of the engine.
  • Exhaust heat exchangers in particular exhaust gas cooler are known in various embodiments:
  • the applicant has been known a welded construction for an exhaust gas heat exchanger, which consists of a bundle of exhaust pipes, which are surrounded on its outside by coolant, which is taken from the cooling circuit of the internal combustion engine.
  • Exhaust heat exchangers are often also equipped with a bypass duct for the exhaust gas, ie in the event that cooling of the exhaust gas or - for heating purposes - a heating of the coolant is not required or not advantageous.
  • a bypass duct for the exhaust gas, ie in the event that cooling of the exhaust gas or - for heating purposes - a heating of the coolant is not required or not advantageous.
  • the applicant and in the DE 102 03 003 A1 are such exhaust gas heat exchanger disclosed with an integrated bypass, wherein in an inlet diffuser or in the outlet region of the Abgas139übertragers a bypass valve, preferably in the form of a bypass valve is arranged, which acts as a switch for the exhaust gas flow and passes either through the bypassed by coolant tube bundle or through the bypass channel ,
  • the bypass duct for the exhaust gas heat exchanger can also be arranged separately, ie outside the heat exchanger.
  • the EGR valve is disposed in the return of the EGR passage, that is, downstream of the exhaust gas cooler in the exhaust gas flow direction.
  • a device for exhaust gas recirculation with a valve device in which a bypass channel is integrated with a bypass valve.
  • the exhaust gas heat exchanger has a bundle of U-shaped exhaust pipes, which are cooled by a liquid coolant.
  • the integration of a first and a second exhaust gas heat exchanger to a structural unit or a module is provided.
  • the two exhaust gas heat exchangers are preferably designed as high-temperature and low-temperature exhaust gas coolers, which are each cooled by a separate cooling circuit, by the coolant circuit of the internal combustion engine and by a low-temperature cooling circuit.
  • Both heat exchangers are mechanically or cohesively, ie connected by screwing, welding or soldering together to form a structural unit.
  • the advantage here is that such a module can be produced in a manufacturing process and mounted as a unit in the vehicle, which also eliminates the need to install intermediate cables. This reduces the costs.
  • a further advantage is a reduction of the installation space, since the components of the module are arranged compact and without intermediate lines.
  • the cooling of the exhaust gas is not limited to liquid cooling, air cooling or liquid and air cooling are also possible.
  • the two exhaust gas cooler on a bypass channel, which may be either integrated or arranged separately.
  • the bypass channel is assigned a bypass valve, which is arranged on the inlet or outlet side of the exhaust gas cooler.
  • the EGR valve is integrated into the module, wherein here also an arrangement on the exhaust gas inlet or exhaust gas outlet side is possible.
  • the EGR valve can either be designed as a pure shut-off valve or according to the invention as a flow control valve, as a three-way valve to regulate the recirculated mass flow.
  • the high-temperature radiator on an inlet diffuser in which a particulate filter and / or an oxidation catalyst is arranged, which is particularly advantageous for the exhaust gas purification of diesel engines and prevents soot in the exhaust pipes of the radiator.
  • the exhaust gas is cooled in the first or second radiator with air, wherein the respective other cooling stage is cooled with coolant.
  • Fig. 1a shows an exhaust gas recirculation (EGR) system for a supercharged, designed as a diesel engine internal combustion engine 1 of a motor vehicle, not shown.
  • the diesel engine 1 has an intake pipe 2 and an exhaust pipe 3, wherein in the exhaust pipe 3, an exhaust gas turbine 4 and in the intake 2 a driven by the exhaust turbine 4 compressor 5 (so-called exhaust gas turbocharger) are arranged.
  • a charge air cooler 6 is arranged, which, which is not shown, is cooled by a liquid coolant or by air.
  • a particulate filter and an oxidation catalyst represented by a rectangle 7, are arranged downstream of the exhaust gas turbine 4, a particulate filter and an oxidation catalyst, represented by a rectangle 7, are arranged.
  • the portion 3a of the exhaust pipe 3 located downstream of the exhaust gas turbine 4 and the portion 2a of the upstream pipe 2 located upstream of the compressor 5 are referred to as the low pressure side.
  • an exhaust gas recirculation line (EGR line) 8 and an exhaust gas cooler 9 are arranged, which is connectable via two nozzles 9a, 9b to a not shown coolant circuit of the engine 1.
  • the function of the illustrated EGR system is as follows: Fresh air is sucked in via the low-pressure section 2 a, brought from the compressor 5 to an elevated pressure, the boost pressure, fed to the charge air cooler 6 via the intake line 2, cooled there to increase the delivery rate and the engine 1 fed.
  • the exhaust gases leaving the engine drive the exhaust gas turbine 4, which in turn drives the compressor 5.
  • Behind the exhaust gas turbine 4, the diesel exhaust gases are cleaned by the particulate filter and the oxidation catalyst 7.
  • a partial flow is branched off via the EGR line 8, cooled in the exhaust gas cooler 9 and fed to the low-pressure section 2 a, where mixing of the recirculated exhaust gases with the intake fresh air takes place.
  • the performance or the Pressure difference at the compressor 5 is thus decisive for the exhaust gas recirculated via the exhaust gas cooler 9 (mass flow) and thus can be considerably increased, based on a known EGR system on the high pressure side, where only the pressure difference between the engine exhaust side and engine intake side is available for the flow ,
  • Fig. 1b shows an exhaust gas recirculation system (EGR system) as shown in Fig. 1a is described.
  • EGR system exhaust gas recirculation system
  • the tubing (4) is designed as a two-stage turbine system and the compressor (5) as a two-stage compression system with intermediate cooling.
  • the function of the illustrated EGR system is as follows: Fresh air is drawn in via the low-pressure section 2 a, brought from the first compressor stage 5 a to a higher pressure, the intermediate pressure and fed via an intermediate pressure section 2 b to an intermediate heat exchanger 25.
  • the intermediate heat exchanger the exhaust gas / air mixture is cooled to limit the temperature and then in a second compressor stage 5b increased to the intermediate pressure, the boost pressure, fed via the intake 2 to the intercooler 6, cooled there to increase the degree of delivery and the engine 1 supplied.
  • the exhaust gases leaving the engine drive a first exhaust gas turbine 4a, which in turn drives the second compressor stage 5b.
  • the expanded exhaust gas is fed to a second exhaust gas turbine 4b, which in turn drives the first compressor stage 5a.
  • the diesel exhaust gases are cleaned by the particulate filter and the oxidation catalyst 7.
  • a partial flow is branched off via the EGR line 8, cooled in the exhaust gas cooler 9 and fed to the low-pressure section 2 a, where mixing of the recirculated exhaust gases with the intake fresh air takes place.
  • Fig. 2a shows a further embodiment of the invention, ie an EGR system on the low pressure side of the engine 1 - for like parts, the same reference numerals as in Fig. 1a used.
  • the EGR system according to Fig. 2a corresponds on the high pressure side of the Fig. 1a ; on the low pressure side, ie between the line sections 2a, 3a is also a EGR line 8 is provided, which leads to a module 10, ie a constructed of different components assembly comprising primarily two exhaust side connected exhaust gas cooler 11, 12, the mechanical, ie, for example, by screwing or cohesively, ie by soldering or welding connected to each other.
  • the exhaust side upstream exhaust gas cooler 11 is formed as a high-temperature radiator and connected to the cooling circuit of the engine 1, not shown.
  • the exhaust side downstream cooler 12 is designed as a low-temperature cooler and connected to a low-temperature cooling circuit, not shown.
  • Upstream of the high-temperature cooler 11, a valve device 13 with a bypass flap 14 and a bypass line 15 bypassing the exhaust gas coolers 11, 12 is provided.
  • the latter can be integrated in the exhaust gas cooler 11, 12 or formed as a separate line.
  • the valve device 13 with bypass flap 14 can - contrary to the graphic representation - also downstream of the exhaust gas cooler 11, 12 may be arranged.
  • an EGR valve 16 designed as a shut-off valve is provided, which is likewise integrated into the module 10, ie connected to the remaining parts to form a structural unit.
  • a particulate filter and / or an oxidation catalytic converter 17, which is likewise structurally integrated, can be provided in an inlet diffuser, not shown, of the exhaust gas cooler 11, that is to say of the high-temperature radiator.
  • the module 10 is used in the assembly in the EGR line 8, the exhaust gas cooler 11, 12 are connected to the respective cooling circuits, and the valve device 13 and the control valve 16 are connected to control devices, not shown.
  • the attachment of the module 10 may take place at a suitable location in the motor vehicle.
  • the function of the illustrated EGR system is similar to Fig. 1a , initially with the difference that here is a two-stage cooling of the recirculated via the EGR line 8 exhaust stream. If no cooling is required or advantageous, both exhaust gas cooler 11, 12 by the bypass line 15 are bypassed.
  • the amount of the recirculated exhaust gas 8 is controlled by the shut-off valve 16, wherein in the simplest cases, a black-and-white control (open or close) is sufficient.
  • the particulate filter 17, which is provided in addition to the particulate filter 7 in the exhaust pipe 3a, prevents soot from accumulating in the exhaust pipes, not shown, of the two exhaust coolers 11, 12.
  • the exhaust gas cooler module 10 on the low pressure side (2a, 3a) is arranged, is also here an arbitrarily high pressure difference for the promotion of the exhaust gas flow to the compressor 5 is available, which is due to the large number of components in the EGR line 8 and high exhaust gas mass flows of advantage.
  • FIG. 2b shows a further embodiment of the invention, ie an EGR system on the low pressure side of the engine 1 - for like parts, the same reference numerals as in Fig. 1b and 2a used.
  • the tubing (4) is designed as a two-stage turbine system and the compressor (5) as a two-stage compression system with intermediate cooling, as in Fig. 1b is described.
  • FIG. 2c shows a further embodiment of the invention, ie an EGR system on the low pressure side of the engine 1 - for like parts, the same reference numerals as in Fig. 2a used.
  • Fig. 2a is formed as a shut-off valve EGR valve 16, which is also integrated into the module 10, that is connected to the other parts to form a unit, downstream of the exhaust gas cooler 11, 12 and the junction point of the bypass channel 15 is arranged.
  • Figure 2d shows a further embodiment of the invention, ie an EGR system on the low pressure side of the engine 1 - for like parts, the same reference numerals as in Fig. 2a and 2c used.
  • the tubing (4) is designed as a two-stage turbine system and the compressor (5) as a two-stage compression system with intermediate cooling; like this in Fig. 1b is described.
  • Fig. 3a shows a further embodiment of the invention for an EGR system on the low pressure side of the engine 1, again with like reference numerals be used for the same parts.
  • an exhaust gas recirculation guide 8 is arranged, which is largely integrated in a module 18.
  • the module 18, like the module 10 in FIG Fig. 2a also the exhaust gas cooler 11, 12, the valve device 13 with bypass valve 14 and bypass channel 15, and further includes the particulate filter and / or the oxidation catalyst 17.
  • Deviating from the embodiment according to Fig. 2 is a designed as a three-way valve flow control valve 19 (EGR valve), which is arranged at the branch point of the exhaust pipe 3a and EGR pipe 8.
  • EGR valve three-way valve flow control valve
  • the control valve 19 Through the control valve 19, the proportion of exhaust gas, which is taken from the total exhaust gas flow can be adjusted. As a result, a more accurate control of the recirculated exhaust gas mass flow is possible.
  • the functions of the module 18 are equal to the module 10 in FIG Fig. 2a ,
  • Fig. 3b shows a further embodiment of the invention for an EGR system on the low pressure side of the engine 1, again with the same reference numerals for the same parts as in Fig. 3a be used.
  • the tubing (4) is designed as a two-stage turbine system and the compressor (5) as a two-stage compression system with intermediate cooling, as in Fig. 1b is described.
  • Fig. 4a shows a further embodiment of the invention for an EGR system on the low pressure side of the engine 1, again using like reference numerals for the same.
  • the EGR valve 19, the valve device 13 and the bypass flap 14 are combined to form a structural unit, which form a multi-function valve 26.
  • Fig. 4b shows a further embodiment of the invention for an EGR system on the low pressure side of the engine 1, again using like reference numerals for the same.
  • tubing (4) is designed as a two-stage turbine system and the compressor (5) as a two-stage compression system with intermediate cooling, as in Fig. 1b is described.

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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)

Claims (10)

  1. Dispositif de recyclage et de refroidissement de gaz d'échappement d'un moteur à combustion interne (1), en particulier d'un moteur diesel dans un véhicule automobile, comprenant une conduite (8) de recyclage des gaz d'échappement (AGR), au moins un échangeur de chaleur de gaz d'échappement (11) et une électrovalve (19) de recyclage des gaz d'échappement (AGR), où un premier et un deuxième échangeurs de chaleur de gaz d'échappement (11, 12) sont regroupés pour constituer un ensemble unitaire et forment un module (10, 18), où le premier et le deuxième échangeurs de chaleur de gaz d'échappement sont montés l'un derrière l'autre, côté gaz d'échappement, et conçus comme un refroidisseur à haute température (11) et comme un refroidisseur à basse température (12), et le refroidisseur à haute température (11) peut être refroidi par un premier circuit de refroidissement servant de circuit de refroidissement du moteur à combustion interne (1), le refroidisseur à basse température (12) pouvant être refroidi par un deuxième circuit de refroidissement, où les refroidisseurs à haute température et à basse température (11, 12) sont assemblés l'un à l'autre mécaniquement ou par continuité de matière, où le refroidisseur à haute température (11) se compose d'un matériau différent de celui du refroidisseur à basse température (12), et le refroidisseur à haute température (11) se compose d'un acier spécial résistant à la corrosion, le refroidisseur à basse température (12) étant en aluminium qui est protégé contre la corrosion, où les deux échangeurs de gaz d'échappement sont actionnés à flux opposés, où les refroidisseurs à haute température et à basse température (11, 12) présentent un conduit de dérivation (15) pour les gaz d'échappement, où une soupape de dérivation (13, 14) est associée au conduit de dérivation (15), soupape de dérivation à travers laquelle le flux de gaz d'échappement peut être dirigé soit à travers les refroidisseurs (11, 12), soit à travers le conduit de dérivation (15), et l'électrovalve AGR (16, 19) est intégrée dans le module (10, 18), où l'électrovalve AGR (16, 19) est disposée en amont des refroidisseurs (11, 12), où l'électrovalve AGR est une électrovalve de régulation débitmétrique qui régule le débit massique recyclé, et l'électrovalve AGR est conçue comme une valve à trois voies.
  2. Dispositif selon la revendication 1, caractérisé en ce que le milieu de refroidissement du premier circuit de refroidissement se différencie du milieu de refroidissement du deuxième circuit de refroidissement.
  3. Dispositif selon l'une des revendications précédentes 1 ou 2, caractérisé en ce que le milieu de refroidissement du premier circuit de refroidissement est sous forme gazeuse, le milieu de refroidissement du deuxième circuit de refroidissement étant sous forme liquide ou inversement.
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le milieu de refroidissement du premier circuit de refroidissement est de préférence de l'air, et le milieu de refroidissement du deuxième circuit de refroidissement est de préférence un liquide de refroidissement ou inversement.
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le filtre à particules, avec l'électrovalve AGR (16), forme un ensemble unitaire.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le refroidisseur à haute température (11) présente un diffuseur d'admission dans lequel sont disposés un filtre à particules et/ou un catalyseur d'oxydation (17).
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif comprend un premier étage de compresseur (5a) et au moins un autre étage de compresseur (5b).
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif comprend une première turbine à gaz d'échappement (4a) et au moins une deuxième turbine à gaz d'échappement (4b).
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif comprend au moins un échangeur de chaleur intermédiaire (25) qui est disposé, de préférence, côté sortie d'écoulement du premier étage de compresseur (5a) et côté entrée d'écoulement du deuxième étage de compresseur (5b).
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la première turbine à gaz d'échappement (4a) est couplée au deuxième étage de compresseur (5b), et la deuxième turbine à gaz d'échappement (4b) est couplée au premier étage de compresseur (5b).
EP06762098.9A 2005-06-24 2006-06-20 Dispositif de recyclage et de refroidissement de gaz d'echappement conçu pour un moteur a combustion interne Not-in-force EP1899595B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029322A DE102005029322A1 (de) 2005-06-24 2005-06-24 Vorrichtung zur Rückführung und Kühlung von Abgas für eine Brennkraftmaschine
PCT/EP2006/005908 WO2006136372A1 (fr) 2005-06-24 2006-06-20 Dispositif de recyclage et de refroidissement de gaz d'echappement conçu pour un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1899595A1 EP1899595A1 (fr) 2008-03-19
EP1899595B1 true EP1899595B1 (fr) 2013-08-14

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EP06762098.9A Not-in-force EP1899595B1 (fr) 2005-06-24 2006-06-20 Dispositif de recyclage et de refroidissement de gaz d'echappement conçu pour un moteur a combustion interne

Country Status (4)

Country Link
US (1) US8061334B2 (fr)
EP (1) EP1899595B1 (fr)
DE (1) DE102005029322A1 (fr)
WO (1) WO2006136372A1 (fr)

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* Cited by examiner, † Cited by third party
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DE102005008103A1 (de) * 2005-02-21 2006-08-31 Behr Gmbh & Co. Kg Abgasturboladerbrennkraftmaschine
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US8061334B2 (en) 2011-11-22
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EP1899595A1 (fr) 2008-03-19
US20090044789A1 (en) 2009-02-19

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