EP1861608B1 - Systeme d'echappement comprenant une unite de traitement de gaz d'echappement et un echangeur thermique dans une conduite de retour de gaz d'echappement - Google Patents

Systeme d'echappement comprenant une unite de traitement de gaz d'echappement et un echangeur thermique dans une conduite de retour de gaz d'echappement Download PDF

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Publication number
EP1861608B1
EP1861608B1 EP06723685.1A EP06723685A EP1861608B1 EP 1861608 B1 EP1861608 B1 EP 1861608B1 EP 06723685 A EP06723685 A EP 06723685A EP 1861608 B1 EP1861608 B1 EP 1861608B1
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EP
European Patent Office
Prior art keywords
exhaust gas
treatment unit
exhaust
heat exchanger
gas treatment
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.)
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Application number
EP06723685.1A
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German (de)
English (en)
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EP1861608A1 (fr
Inventor
Rolf BRÜCK
Andreas Scheeder
Peter Geskes
Ulrich Maucher
Jens Ruckwied
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
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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.)
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Publication date
Application filed by Emitec Gesellschaft fuer Emissionstechnologie mbH, Behr GmbH and Co KG filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Priority to PL06723685T priority Critical patent/PL1861608T3/pl
Publication of EP1861608A1 publication Critical patent/EP1861608A1/fr
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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
    • F01N3/24—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
    • F01N3/28—Construction of catalytic reactors
    • 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
    • F01N13/0097—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 the purifying devices are arranged in a single housing
    • 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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2889—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with heat exchangers in a single housing
    • 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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • 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
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger

Definitions

  • the subject of the present invention is an exhaust system for internal combustion engines with heat exchanger and exhaust gas treatment unit in an exhaust gas recirculation line.
  • Exhaust systems of internal combustion engines are often formed with heat exchangers, which are used in particular for a return of the exhaust gas in the air inlet region of the internal combustion engine for cooling the exhaust gas.
  • Contamination of the heat exchanger by pollutants present in the exhaust gas reduces its efficiency, so that when the heat exchanger is designed, it basically has to be over-dimensioned in order to ensure over a longer period of time that the heat exchanger has at least the desired performance.
  • an exhaust gas treatment system with an exhaust gas recirculation line in which a heat exchanger is provided. in the Inlet portion of the heat exchanger, an oxidation catalyst is provided. This is provided as a layer on the walls of the exhaust gas recirculation line. So can according to the US 2003/0213230 A1 a reduction of the unbranched carbons can be achieved.
  • the JP 2000146465 also describes an exhaust gas recirculation system, wherein in the exhaust gas recirculation line, a heat exchanger is provided, on whose walls an oxidation catalyst can be provided so that the clogging of the channels can be avoided by particles. Furthermore, it is also proposed to carry out the walls of the exhaust gas recirculation line with a catalyst, wherein its placement and configuration, taking into account Adhesion or accumulation of particles (PM and SOF) takes place.
  • PM and SOF Adhesion or accumulation of particles
  • the object of the invention is to propose a system to be used in the exhaust gas recirculation line comprising a heat exchanger and a catalyst, in which an effective reduction of the contamination of the heat exchanger and at the same time the smallest possible construction volume of the heat exchanger and the catalyst is achieved.
  • the exhaust system according to the invention of an internal combustion engine comprising an intake system and an exhaust outlet, wherein exhaust outlet and intake are connected via an exhaust gas recirculation line, in which an exhaust treatment unit and a heat exchanger are formed, wherein the heat exchanger has a first back pressure and the exhaust treatment unit has a second back pressure, the smaller
  • the first back pressure is characterized by the fact that the exhaust gas treatment unit at such a first distance in the flow direction is formed before the heat exchanger, that during operation of a entering into the exhaust gas treatment unit gas flow is made uniform. This means, in particular, that the back pressure in the flow direction before the exhaust gas treatment unit is influenced by the first dynamic pressure of the heat exchanger.
  • the exhaust treatment unit further comprises a polling body.
  • a honeycomb body an exhaust gas treatment unit can be created, whose properties such as surface, back pressure, etc. can be very accurately einizesteht.
  • metallic or ceramic honeycomb bodies are suitable as honeycomb bodies.
  • honeycomb bodies can be used here in an advantageous manner, as described for example in the DE 197 55 703 A1 , of the WO 90/13736 A1 and the WO 99/11911 A1 are described. With respect to the attachment of the honeycomb body, these applications are fully incorporated by reference.
  • the first distance is selected so that the Cumulate the effect of the first dynamic pressure and the second dynamic pressure.
  • the first distance between the exhaust gas treatment unit and the heat exchanger is less than 15 mm, preferably less than 10 mm, particularly preferably less than 5 mm.
  • Cumulating means here in particular that the dynamic pressure applied in front of the Abaas treatment unit is greater than that second dynamic pressure, the exhaust treatment unit as such would have.
  • the dynamic pressure in front of a component in a flow causes a kind of pressure pad, which leads to a change of Flow leads.
  • the present invention causes instead of two areas with a pressure pad iewe before the heat exchanger and the Abgasbehandiungshim forms only a pressure pad before the exhaust treatment unit.
  • the cumulation of the dynamic pressures advantageously leads to the exhaust gas, before it flows into the exhaust gas treatment unit, having to overcome a back pressure which is greater than the second back pressure of the exhaust gas treatment unit.
  • the dynamic pressure is even significantly greater than the second dynamic pressure.
  • the enlargement of the back pressure causes a homogenization of the flow of the exhaust gas treatment unit and thus the gas flow through the exhaust gas treatment unit and heat exchanger.
  • a heat exchanger is to be understood here in particular also an exhaust gas cooler, with which the recirculated exhaust gas is cooled.
  • the internal combustion engine is in particular a diesel engine, for example a diesel engine of a motor vehicle (eg a passenger car, a truck, a motor-driven two-wheeled vehicle, boat or aircraft) or a stationary-use diesel engine.
  • a homogenization is in particular also understood as a broadening of the probability distribution of the applied velocities.
  • a heat exchanger which has a plurality of tubes through which the exhaust gas flows. These tubes are preferably flowed around by a coolant which flows through the housing of the heat exchanger and which is taken from a not shown cooling circuit of the internal combustion engine.
  • honeycomb bodies for example ceramic or metallic honeycomb bodies, or else wire knit bodies, bodies made of metal foam or the like are suitable as exhaust gas treatment units.
  • Metallic honeycomb bodies may in particular be constructed from at least one at least partially structured metallic layer and optionally at least one substantially smooth layer, which are wound or stacked together and twisted. The each other twisted or wound layers form permeable cavities which are bounded by the layers.
  • the layers are in particular made of a high temperature corrosion resistant material, such as Al or Cr steel.
  • the layers may be interconnected, in particular cohesively, such as by a Hochtemperaturlöt compiler.
  • Both the essentially smooth layers and the at least partially structured layers can have microstructures, guide surfaces, perforations and / or perforations, at least in some areas, which serve for even better mixing of the gas flow.
  • the equalization of the gas flow before entering the exhaust gas treatment unit is advantageously carried out in that the exhaust gas treatment unit is formed relatively close to the heat exchanger. This leads to an equalization of the gas flow already in the exhaust gas treatment unit, so that here the conversion rate is improved because the cross section of the exhaust gas treatment unit is more uniformly exposed to exhaust gas.
  • the volume of the exhaust gas treatment unit can be reduced compared to a conventional structure at the same rate of conversion of pollutants in the exhaust gas. Due to the significantly more efficient conversion rate of the pollutants also reduces the pollution of the heat exchanger, so that it can be smaller in size compared to conventional heat exchangers.
  • honeycomb body which has a relatively small number of cells, for example less than 400 cpsi (cells per square inch), preferably less than 300 cpsi 200 cpsi and less, especially even 100 cpsi.
  • a second distance of a gas inlet-side end face of the exhaust gas treatment unit from a gas inlet-side end face of the heat exchanger is less than 60 mm, preferably less than 45 mm, more preferably less than 30 mm.
  • the expansion of the exhaust gas treatment unit in the flow direction is less than 100 mm, preferably less than 50 mm, particularly preferably 25 mm or less.
  • the heat exchanger and the exhaust gas treatment unit in a common housing.
  • the exhaust gas treatment unit in a corresponding bead of the housing by means of a flanging or the like. It is also possible to fit the exhaust gas treatment unit flush on a front side of the heat exchanger.
  • the exhaust gas treatment unit comprises a catalytically active coating, in particular an oxidation catalyst coating.
  • the catalytically active coating comprises, for example, a ceramic washcoat which contains materials which catalyze the desired reactions, ie in particular reduce the reaction temperature of these reactions to such an extent that they run to a considerable extent at the temperatures in the exhaust gas recirculation line.
  • Suitable catalysts are in particular noble metals such as platinum, rhodium or the like.
  • the oxidation catalyst coating catalyzes in particular the oxidation of hydrocarbons, since they are responsible for fouling the heat exchanger.
  • the hydrocarbons form a sticky substance that condenses on the cold areas of the heat exchanger and that may further cause soot particles contained in the exhaust gas to adhere to the walls of the heat exchanger.
  • the exhaust gas treatment unit is in particular designed so that the longest possible residence time and the largest possible surface available for the reaction is given.
  • the ratio of the first dynamic pressure to the second dynamic pressure is greater than 2, preferably greater than 10.
  • Fig. 1 schematically shows a first embodiment of an exhaust system 1 according to the invention an internal combustion engine 2.
  • the Verbrennungslaaftmaschine 2 comprises an intake system 3 and an exhaust gas outlet 4, wherein the exhaust gas outlet 4 and intake system 3 are connected via an exhaust gas recirculation line 5, in which an exhaust gas treatment unit 6 and a heat exchanger 7 are formed.
  • the heat exchanger 7 has a first dynamic pressure and the exhaust gas treatment unit 6 has a second dynamic pressure, which is smaller than the first dynamic pressure.
  • the usual flow direction of the exhaust gas was symbolized by corresponding arrows.
  • the amount of exhaust gas flowing through the exhaust gas recirculation line 5 can be regulated, for example, by corresponding valves not shown.
  • the exhaust gas recirculation line 5 can branch off on the exhaust side both upstream and downstream of an exhaust gas turbocharger (not shown).
  • the exhaust gas treatment unit 6 is formed in such a first distance 8 in the flow direction in front of the heat exchanger 7, so that during operation, a gas flow 14 entering the exhaust gas treatment unit 6 is made uniform.
  • the first distance 8 here is less than 15 mm, preferably less than 10 mm, particularly preferably less than 5 mm.
  • Heat exchanger 7 and exhaust gas treatment unit 6 are designed so that at this first distance 8 to accumulate the effects of the first dynamic pressure and the second dynamic pressure, so that the exhaust gas flowing into the exhaust gas treatment unit 6 has to overcome a back pressure greater than the second back pressure of Exhaust gas treatment unit 6 as such. As explained above, this leads to an equalization of the gas flow 14, which flows into the exhaust-gas treatment unit 6.
  • Fig. 2 schematically shows the section of the exhaust gas recirculation line 5, which comprises the exhaust gas treatment unit 6 and the heat exchanger 7.
  • a second distance 9 between a gas inlet-side end face 10 of the heat exchanger 7 and a gas inlet-side end face 11 of the exhaust gas treatment unit 6 is selected according to the invention so that it comes to a homogenization of the flow in the exhaust gas treatment unit 6.
  • the second distance 9 is less than 60 mm, preferably less than 45 min, particularly preferably less than 30 mm.
  • short honeycomb bodies can be used as the exhaust gas treatment unit 6, in particular an expansion 12 in the flow direction of approximately 20 to approximately 40 mm.
  • the first distance 8 is less than 15mm, or for example 5mm or less.
  • the first distance 8 is selected such that the effect of the first dynamic pressure of the heat exchanger 7 and the second dynamic pressure of the exhaust gas treatment unit 6 accumulate, so that the exhaust gas flowing into the exhaust gas treatment unit 6 must overcome a dynamic pressure which is greater, preferably distinct is greater than the second dynamic pressure of the exhaust gas treatment unit 6.
  • Fig. 3 schematically shows a section of another Ausunngsbeispiels an exhaust system according to the invention 1.
  • a cone 13 is formed in the exhaust gas recirculation line 5, which comprises the honeycomb body 17 with here conical channels 18 running exhaust treatment unit 6.
  • the cone 13 carries the gas flow 14 flowing through the exhaust gas recirculation line 5 to the heat exchanger 7.
  • the heat exchanger 7 comprises exhaust pipes 15 in a housing 16.
  • the gas flow 14 flows through the exhaust pipes 15, wherein these are flowed around in the housing 16 by a coolant which is part of Cooling circuit of the internal combustion engine 2 is.
  • the first distance 8 between heat exchanger 7 and Abgasbehaadlungsaku 6 is inventively chosen so that during operation of a entering into the exhaust gas treatment unit 6 gas flow 14 is made uniform.
  • Fig. 4 schematically shows a first probability distribution 19 of the velocity v and a second probability distribution 20 of the velocity v.
  • the first probability distribution 19 results if only the exhaust-gas treatment unit 6 is flowed with gas, ie without a heat exchanger 7 being formed behind it in the flow direction. Plotted for both distributions, the probability that a certain speed is present in the gas. Both the probability and the speed are given in relative units.
  • the second probability distribution 20 is the probability distribution in a system according to the invention. It therefore relates to an exhaust system 1 with a heat exchanger 7 and an exhaust gas treatment unit 6 in a Abgasrilcktextechnisch 5.
  • the second probability distribution 20 is wider, in particular has a greater width at half maximum height (full width half maximum) than the first probability distribution 19. This is based on the homogenization of the flow according to the invention.
  • the exhaust system according to the invention advantageously allows the formation of a heat exchanger 7 and an exhaust gas treatment unit 6 such as a honeycomb body in the Abgasruckruhrtechnisch 5, wherein both the heat exchanger 7 and the exhaust gas treatment unit 6 can be formed smaller than in the usual way. This saves considerable costs in the design of such systems.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (6)

  1. Système d'échappement (1) d'un moteur à combustion interne (2), qui comporte un système d'admission (3) et une sortie de gaz d'échappement (4), la sortie de gaz d'échappement (4) et le système d'admission (3) étant connectés au moyen d'une conduite de retour de gaz d'échappement (5) dans laquelle sont réalisés une unité de traitement de gaz d'échappement (6) et un échangeur thermique (7), l'échangeur thermique (7) présentant une première pression dynamique et l'unité de traitement de gaz d'échappement (6) présentant une deuxième pression dynamique qui est inférieure à la première pression dynamique, l'unité de traitement de gaz d'échappement (6) étant réalisée à une première distance (8) avant l'échangeur thermique (7) dans la direction de l'écoulement,
    caractérisé en ce que
    l'unité de traitement de gaz d'échappement (6) comporte un corps en nids d'abeilles (17) et la première distance (8) entre l'unité de traitement de gaz d'échappement (6) et l'échangeur thermique (7) vaut moins de 15 mm, et en outre, lors du fonctionnement, l'effet de la première pression dynamique et celui de la deuxième pression dynamique sont cumulatifs, la deuxième pression dynamique avant l'unité de traitement de gaz d'échappement (6) dans la direction de l'écoulement étant influencée par la première pression dynamique de l'échangeur thermique (7) et un flux de gaz (14) entrant dans l'unité de traitement de gaz d'échappement (6) étant ainsi homogénéisé en ce qui concerne l'écoulement.
  2. Système d'échappement (1) selon la revendication 1, dans lequel le rapport de la première pression dynamique à la deuxième pression dynamique est supérieur à 2.
  3. Système d'échappement (1) selon l'une quelconque des revendications précédentes, dans lequel une deuxième distance (9) entre une face frontale (11), du côté de l'entrée de gaz, de l'unité de traitement de gaz d'échappement (6) et une face frontale (10), du côté de l'entrée de gaz, de l'échangeur thermique (7) vaut moins de 60 mm, de préférence moins de 45 mm, de manière particulièrement préférée moins de 30 mm.
  4. Système d'échappement (1) selon l'une quelconque des revendications précédentes, dans lequel la dimension (12) de l'unité de traitement de gaz d'échappement (6) dans la direction de l'écoulement vaut moins de 100 mm, de préférence moins de 50 mm, de manière particulièrement préférée 25 mm ou moins.
  5. Système d'échappement (1) selon l'une quelconque des revendications précédentes, dans lequel l'unité de traitement de gaz d'échappement (6) comporte un revêtement catalytiquement actif, en particulier un revêtement catalyseur d'oxydation.
  6. Système d'échappement (1) selon l'une quelconque des revendications précédentes, dans lequel le rapport de la première pression dynamique à la deuxième pression dynamique est supérieur à 10.
EP06723685.1A 2005-03-24 2006-03-24 Systeme d'echappement comprenant une unite de traitement de gaz d'echappement et un echangeur thermique dans une conduite de retour de gaz d'echappement Active EP1861608B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06723685T PL1861608T3 (pl) 2005-03-24 2006-03-24 Układ spalinowy z jednostką przetwarzania spalin i wymiennikiem ciepła w przewodzie odprowadzania spalin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005014264A DE102005014264A1 (de) 2005-03-24 2005-03-24 Abgasanlage mit einer Abgasbehandlungseinheit und einem Wärmetauscher in einer Abgasrückführleitung
PCT/EP2006/002702 WO2006100090A1 (fr) 2005-03-24 2006-03-24 Systeme d'echappement comprenant une unite de traitement de gaz d'echappement et un echangeur thermique dans une conduite de retour de gaz d'echappement

Publications (2)

Publication Number Publication Date
EP1861608A1 EP1861608A1 (fr) 2007-12-05
EP1861608B1 true EP1861608B1 (fr) 2013-05-15

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EP06723685.1A Active EP1861608B1 (fr) 2005-03-24 2006-03-24 Systeme d'echappement comprenant une unite de traitement de gaz d'echappement et un echangeur thermique dans une conduite de retour de gaz d'echappement

Country Status (9)

Country Link
US (1) US7490595B2 (fr)
EP (1) EP1861608B1 (fr)
JP (1) JP2008534835A (fr)
KR (1) KR100901548B1 (fr)
CN (1) CN101146989B (fr)
DE (1) DE102005014264A1 (fr)
PL (1) PL1861608T3 (fr)
RU (1) RU2410561C2 (fr)
WO (1) WO2006100090A1 (fr)

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Publication number Priority date Publication date Assignee Title
FR2925608A3 (fr) * 2007-12-19 2009-06-26 Renault Sas Dispositif de recirculation des gaz d'echappement comportant un refroidisseur
JP4966290B2 (ja) * 2008-12-17 2012-07-04 本田技研工業株式会社 内燃機関の排気ガス還流装置
CN102784524B (zh) * 2011-05-20 2014-12-10 雅高思先进科技有限公司 高效能空气净化装置及方法
JP5863320B2 (ja) 2011-08-05 2016-02-16 三菱重工コンプレッサ株式会社 遠心圧縮機
DE102013000766A1 (de) 2013-01-18 2014-07-24 Man Diesel & Turbo Se Kühler
CN106444234A (zh) * 2016-09-21 2017-02-22 苏州佳世达光电有限公司 投影装置

Citations (1)

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Publication number Priority date Publication date Assignee Title
US20030213230A1 (en) * 2002-05-20 2003-11-20 Shigeto Yahata Exhaust gas recirculation system having cooler

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EP1861608A1 (fr) 2007-12-05
RU2410561C2 (ru) 2011-01-27
CN101146989A (zh) 2008-03-19
WO2006100090A1 (fr) 2006-09-28
US7490595B2 (en) 2009-02-17
DE102005014264A1 (de) 2006-09-28
PL1861608T3 (pl) 2014-07-31
KR20070120116A (ko) 2007-12-21
CN101146989B (zh) 2010-09-29
JP2008534835A (ja) 2008-08-28
US20080028747A1 (en) 2008-02-07
KR100901548B1 (ko) 2009-06-08

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