EP3631187B1 - Dispositif de recyclage des gaz d'échappement pour un moteur à combustion interne - Google Patents

Dispositif de recyclage des gaz d'échappement pour un moteur à combustion interne Download PDF

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Publication number
EP3631187B1
EP3631187B1 EP18724238.3A EP18724238A EP3631187B1 EP 3631187 B1 EP3631187 B1 EP 3631187B1 EP 18724238 A EP18724238 A EP 18724238A EP 3631187 B1 EP3631187 B1 EP 3631187B1
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EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
recirculation device
channel
valve
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EP18724238.3A
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German (de)
English (en)
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EP3631187A1 (fr
Inventor
Holger Paffrath
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Pierburg GmbH
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Pierburg GmbH
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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
    • F02M26/13—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
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels

Definitions

  • the present invention relates to an exhaust gas recirculation device for an internal combustion engine, comprising an exhaust duct, via which exhaust gas can be discharged from the internal combustion engine to the environment, an inlet duct, via which combustion air can be conducted to the internal combustion engine, and a heat exchanger, which can be fluidly connected to the exhaust duct at one end , and which can be fluidly connected at an opposite end to an exhaust gas recirculation channel, which opens into the inlet channel.
  • the heat exchanger has two structurally separate strands, which open into a collector that is fluidly connected to the exhaust gas recirculation channel.
  • An exhaust gas recirculation valve is arranged in the exhaust gas recirculation channel, via which a flow cross section of the exhaust gas recirculation channel can be regulated.
  • a significant proportion of the fuel burned in an internal combustion engine is expelled in the form of heat via the exhaust system. It is therefore advantageous to recover this heat or thermal energy from the exhaust system for various purposes.
  • This thermal energy can be used, for example, to heat up the internal combustion engine more quickly, to heat the driver's cab more quickly or to reduce friction losses by heating the lubricant system.
  • the thermal energy is recovered via an exhaust gas recirculation device, which has a heat exchanger through which the recirculated exhaust gas is cooled, so that pollutant emissions are reduced after the cold start phase.
  • an exhaust gas recirculation system which has an exhaust gas cooler with two exhaust gas lines and two outlets and an upstream exhaust gas recirculation valve.
  • An additional flap valve is arranged at the outlet of the exhaust gas cooler, depending on which flow flows through the exhaust gas cooler differently depending on the arrangement of its outlets.
  • GB 2473821 A an exhaust gas recirculation system with a heat exchanger with two upstream flaps, which has an inlet and an outlet on the same side and therefore always flows through in a U-shape.
  • the valves are designed in such a way that in a first position the exhaust gas cooler is not flowed through, in a second position only one cooler line is flowed through and in a third position both coolers are flowed through in opposite directions.
  • the WO 2014/136024 A1 discloses an exhaust gas recirculation device with a U-shaped heat exchanger, which is connected to an exhaust gas duct and in an apex region of the heat exchanger via an exhaust gas recirculation valve to an inlet channel via which combustion air can be conducted to the internal combustion engine.
  • a rectangular flap valve is arranged in the exhaust duct, which is between a first position in which the exhaust duct is completely open and an outlet of the heat exchanger is completely closed and a second position in which the exhaust duct is completely closed in the area of the heat exchanger and an upstream strand in the direction of flow of the U-shaped heat exchanger is completely open, so that the exhaust gas flow is directed into this line of the heat exchanger, is adjustable.
  • the exhaust gas recirculation device according to the prior art has the disadvantage that there must be a sufficiently high flow gradient in the exhaust gas recirculation channel so that a sufficient amount of exhaust gas flows through the heat exchanger.
  • the exhaust gas recirculation device according to the prior art is not suitable for low-pressure operation, since the resistance in the exhaust gas recirculation channel is always higher than in the exhaust gas channel. Accordingly, sufficient controllability of the recirculated exhaust gas flow is not achieved, especially in phases with high exhaust gas recirculation rates.
  • the legally prescribed emission values cannot be achieved with such an exhaust gas control device, especially in the low-pressure range.
  • the object of the present invention is therefore to create an exhaust gas recirculation device for an internal combustion engine, which is also suitable for low-pressure operation, which has a high efficiency in terms of the recovered thermal energy even with a high proportion of recirculated exhaust gas, and in which the Proportion of thermal energy recovered from the exhaust gas can be regulated.
  • the exhaust gas recirculation device has two structurally separate strands which open into a collector.
  • the two strands are therefore designed in such a way that the flows in the strands do not influence each other.
  • At one end of both strands they are connected to each other via the collector, so that depending on the flap position of the exhaust gas recirculation valve, either the exhaust gas from both lines is directed via the collector into the exhaust gas recirculation channel, or the exhaust gas is directed from the first line upstream in the exhaust gas direction via the collector into the second line.
  • the exhaust gas recirculation device has a flap valve, which is arranged in the exhaust duct, via which exhaust gas can be diverted from the internal combustion engine to the environment, in such a way that the flap valve opens the exhaust duct in a first position, and the exhaust duct in the flow direction downstream in a second position closes both strands, so that the exhaust gas flow flows through both strands in the direction of the exhaust gas recirculation channel, and in a third position the flap valve closes the exhaust gas channel in the area between the two strands, so that the exhaust gas flow can be conducted through the first strand upstream in the exhaust gas direction, and the second strand can flow through in the opposite direction depending on the position of the exhaust gas recirculation valve.
  • the flap valve In the first position, the flap valve therefore has a minimal flow resistance in the exhaust duct, so that the flow in the exhaust duct is hardly disturbed by the flap valve. In the second position, however, a complete flow through the exhaust gas duct is prevented from the flap downstream of the two strands.
  • the EGR valve When the EGR valve is open, the exhaust gas is diverted into both lines of the heat exchanger, so that the entire amount of exhaust gas is distributed over two lines, thereby utilizing the maximum heat exchanger cross section. This increases the proportion of thermal energy recovered.
  • the flap valve is continuously adjustable between the three positions. Continuous adjustability between the positions in the sense of the present invention occurs when the flap valve can assume any intermediate position between the first and second positions and between the second and third positions. In an intermediate position between the first position and the second position, the flow in the exhaust duct is throttled, so that the amount of recirculated exhaust gas can be regulated via this position and via the position of the EGR valve. Since both strands flow through between the first and second positions, the amount of thermal energy recovered increases as the amount of recirculated exhaust gas increases.
  • the flap valve is a butterfly valve.
  • the butterfly valve has the advantage that only small holding forces are necessary when the valve is in a static position due to the forces of the gas flow that are balanced on the flap. Only a small amount of torque is required to adjust the flap.
  • the axis of rotation of the flap valve is arranged in an extension of the structural separation of the strands. In the third position, the flap valve extends the structural separation up to a wall of the exhaust duct. This enables a symmetrical structure of the flap valve.
  • the axis of rotation of the flap valve is preferably arranged centrally in the exhaust duct.
  • the axis of rotation intersects an axial channel center axis of the exhaust duct in this area.
  • the flap valve is thereby arranged symmetrically in the exhaust duct, so that the exhaust duct can also be symmetrically shaped in the area of the flap valve.
  • the axis of rotation of the flap valve is arranged on a side of the exhaust duct opposite the strands.
  • the axis of rotation is arranged in such a way that it has the greatest radial distance from the strands.
  • the flap is preferably a rectangular flap and the exhaust duct is rectangular in the area of the flap valve.
  • a flap end remote from the axis of rotation is arranged in the second and third positions directly opposite an exhaust duct wall or the structural separation between the strands.
  • the flap end is arranged in such a way that a distance between the flap end and the exhaust duct wall or the structural separation is minimal, so that only a leakage flow is present between the flap end and the exhaust duct wall or the structural separation. This allows the flow to be completely stopped in one direction and redirected in another direction.
  • the exhaust gas recirculation device is a low-pressure exhaust gas recirculation device.
  • the possibility of parallel flow through both strands means that the heat exchanger can operate even at low back pressure, as is the case with a low-pressure exhaust gas recirculation device.
  • the exhaust duct is spherical in the area of the flap valve, with a diameter of the spherical formation being larger than an exhaust duct diameter.
  • a contact surface can be provided for the flap so that a flow in the exhaust gas duct can be prevented. This contact surface is provided outside the main flow due to the larger diameter, so that the main flow in the exhaust duct is not disturbed by the contact surface.
  • the diameter of the spherical formation is larger than a width of both strands of the heat exchanger.
  • the flap particularly in the second position, can close the exhaust gas duct and redirect the exhaust gas flow into the strands without a flap end protruding into the opening cross section of the downstream strand in the flow direction.
  • such a shape simplifies the production of the channel housing.
  • the structural separation between the strands of the heat exchanger is preferably a partition.
  • the partition wall forms a boundary wall for each strand of the heat exchanger. This keeps the number of components for the heat exchanger small and the heat exchanger has a very compact size.
  • An exhaust gas recirculation device is thus created for an internal combustion engine, which has a high degree of efficiency in terms of the recovered thermal energy even with a high proportion of recirculated exhaust gas.
  • the Figure 1 shows a schematic representation of an exhaust gas recirculation device 10 according to a first exemplary embodiment.
  • the exhaust gas recirculation device 10 comprises an exhaust duct 14, which diverts exhaust gas 18 from the internal combustion engine to the environment, and an inlet duct 22, which directs combustion air 26 to the internal combustion engine.
  • the exhaust gas recirculation device 10 additionally comprises a heat exchanger 30, which is fluidly connected at one end to the exhaust gas duct 14 and at an opposite end to an exhaust gas recirculation channel 34 opening into the inlet channel 22.
  • the heat exchanger 30 has two strands 42, 44 separated by a partition as a structural separation 38, which are combined in front of the exhaust gas recirculation channel 34 in a collector 46, which is connected directly to the exhaust gas recirculation channel 34.
  • An exhaust gas recirculation valve (EGR valve) 50 is arranged in the exhaust gas recirculation channel 34 and is continuously adjustable between a position in which the exhaust gas recirculation channel 34 is closed and a position in which the exhaust gas recirculation channel 34 is completely open. This in Figure 1 EGR valve 50 shown is shown in a closed position.
  • a flap valve 54 designed as a butterfly valve is arranged in the exhaust duct 14.
  • the exhaust duct 14 is spherical, with a diameter D K of the spherical shape being larger than an exhaust duct diameter D A and larger than a width B of both strands 42, 44 of the heat exchanger 30.
  • An axis of rotation 58 of the butterfly valve 54 is arranged in the middle of the exhaust duct 14 in an extension of the partition 38 of the two strands 42, 44.
  • This in Figure 1 Butterfly valve 54 shown is shown in a first position in which the exhaust duct 14 is completely open. However, the butterfly valve 54 can also have intermediate positions between the first and the second Figure 3 Take the second position shown. In the first position, the butterfly valve 54 extends essentially in a flow direction of the exhaust duct 14. In the position of the butterfly valve 54 and the EGR valve 50 shown, no flow is generated in the heat exchanger 30.
  • the exhaust gas recirculation device 10 in Figure 2 differs from the exhaust gas recirculation device 10 Figure 1 in that the exhaust gas recirculation device 10 in Figure 2 the EGR valve 50 is open. As a result, part of the exhaust gas 18 is returned to the internal combustion engine. This recirculated exhaust gas causes a flow in the heat exchanger 30 so that the heat can be recovered from the recirculated exhaust gas.
  • both strands 42, 44 are open to the exhaust duct 14, the heat exchanger 30 is flowed through by the recirculated exhaust gas via both strands 42, 44, so that the effective cross section of the heat exchanger 30 is enlarged and the proportion of the recovered thermal energy is thereby increased.
  • the exhaust gas recirculation device 10 is shown in a second position of the butterfly valve 54 with the EGR valve 50 open.
  • the butterfly valve 54 can also have intermediate positions between the second and the second position
  • Figure 4 Take the third position shown.
  • flap ends of the butterfly valve 54 that are remote from the axis of rotation 58 are arranged directly opposite an exhaust gas duct wall 62.
  • the butterfly valve 54 closes the exhaust gas channel 14 in the flow direction downstream of the two strands 42, 44.
  • the entire exhaust gas flow of the exhaust gas channel 14 is thereby recirculated and flows through both strands 42, 44 of the heat exchanger 30 in the direction of the exhaust gas recirculation channel 34. This means that even with maximum exhaust gas recirculation flow through the full heat exchanger cross section.
  • the exhaust gas recirculation device 10 is shown in a third position of the butterfly valve 54 with the EGR valve 50 closed.
  • the butterfly valve 54 closes the exhaust duct 14 in the area between the two strands 42, 44, so that the exhaust gas flow is directed through the first strand 44 upstream in the exhaust gas direction.
  • the collector 46 which connects both strands 42, 44 to one another, the exhaust gas 18 is directed back into the exhaust gas duct 14 in the opposite direction to the first strand 44 via the second strand 42. This means that the entire length of the heat exchanger 30 can be flowed through if necessary.
  • the exhaust gas recirculation device 10 in Figure 5 differs from the exhaust gas recirculation device 10 Figure 4 in that the exhaust gas recirculation device 10 in Figure 5 the EGR valve 50 is open.
  • part of the exhaust gas 18 is returned to the internal combustion engine.
  • the exhaust gas portion that is returned to the internal combustion engine is only cooled via the first strand 44 located upstream in the exhaust gas direction of the exhaust gas duct 14, while the exhaust gas portion that is not recirculated is cooled and returned to the exhaust gas duct 14 via the second strand 42.
  • hotter exhaust gas 18 is directed into the inlet channel, which reduces the risk of condensation formation in cold operating conditions.
  • FIG 6 a second exemplary embodiment of the exhaust gas recirculation device 10 is shown, which is shown by way of example in a second position with the EGR valve 50 open.
  • the axis of rotation 58 of the flap valve 54 is arranged on a side of the exhaust duct 14 opposite the strands 42, 44.
  • the ones to the Figures 1 to 5 The described positions of the butterfly valve 54 and the EGR valve 50 are also possible for the second exemplary embodiment. This results in the second Embodiment has the same functions previously described for the first embodiment.
  • the exhaust gas recirculation device according to the invention described is therefore suitable for the low-pressure range and therefore has a high level of efficiency in relation to the thermal energy recovered.
  • the recovered thermal energy can be controlled.

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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 (11)

  1. Dispositif de recirculation de gaz d'échappement (10) pour un moteur à combustion interne comprenant :
    - un canal d'échappement (14), par lequel le gaz d'échappement (18) peut être évacué du moteur à combustion interne vers l'environnement,
    - un conduit en entrée (22), par lequel de l'air de combustion (26) peut être envoyé au moteur à combustion interne,
    - un échangeur de chaleur (30) qui peut être relié par fluide à une extrémité au canal d'échappement (14) et qui peut être relié par fluide à une extrémité opposée à celui-ci à un canal de recirculation des gaz d'échappement (34) qui débouche dans le canal en entrée (22), l'échangeur de chaleur (30) comprenant deux branches (42, 44) séparées l'une de l'autre par construction, qui débouchent dans un collecteur (46) qui est relié par fluide au canal de recirculation des gaz d'échappement (34),
    - une vanne de recirculation des gaz d'échappement (50), qui est disposée dans le canal de recirculation des gaz d'échappement (34) et par l'intermédiaire de laquelle une section transversale d'écoulement du canal de recirculation des gaz d'échappement (34) peut être réglée,
    - une vanne à clapet (54), qui est disposée dans le canal d'échappement (14), par lequel le gaz d'échappement (18) peut être évacué du moteur à combustion interne vers l'environnement, de telle sorte que la vanne à clapet (54), dans une première position, libère le canal d'échappement (14), dans une deuxième position, ferme le canal d'échappement (14) dans le sens d'écoulement en aval des deux lignes (42, 44), de sorte que le flux de gaz d'échappement traverse les deux lignes (42, 44) en direction du canal de recirculation des gaz d'échappement (34), et dans une troisième position, la vanne à clapet (54) ferme le canal d'échappement (14) dans la zone située entre les deux branches (42, 44), de sorte que le flux de gaz d'échappement peut être dirigé à travers la première branche (44) située en amont dans le sens des gaz d'échappement, et la deuxième branche (42) peut être traversée dans le sens opposé en fonction de la position de la vanne de recirculation des gaz d'échappement (50).
  2. Dispositif de recirculation de gaz d'échappement (10) selon la revendication 1, caractérisé en ce que la vanne à clapet (54) est réglable en continu entre les trois positions.
  3. Dispositif de recirculation de gaz d'échappement (10) selon la revendication 1 ou 2, caractérisé en ce que la vanne à clapet (54) est une vanne papillon.
  4. Dispositif de recirculation de gaz d'échappement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'axe de rotation (58) de la vanne à clapet (54) est disposé dans le prolongement de la séparation structurelle (38) des branches (42, 44).
  5. Dispositif de recirculation de gaz d'échappement (10) selon l'une des revendications précédentes, caractérisé en ce que l'axe de rotation (58) de la vanne à clapet (54) est disposé au centre du canal d'échappement (14).
  6. Dispositif de recirculation de gaz d'échappement (10) selon la revendication 1 ou 4, caractérisé en ce que l'axe de rotation (58) de la vanne à clapet (54) est disposé sur un côté du canal d'échappement (14) opposé aux branches (42, 44).
  7. Dispositif de recirculation de gaz d'échappement (10) selon l'une des revendications précédentes, caractérisé en ce qu'une extrémité du clapet éloignée de l'axe de rotation (58) est disposée, dans la deuxième et la troisième position, directement en face d'une paroi (62) du canal d'échappement ou de la séparation structurelle (38) entre les branches (42, 44).
  8. Dispositif de recirculation de gaz d'échappement (10) selon une des revendications précédentes, caractérisé en ce que le dispositif de recirculation de gaz d'échappement (10) est un dispositif de recirculation de gaz d'échappement basse pression.
  9. Dispositif de recirculation de gaz d'échappement (10) selon l'une des revendications précédentes, caractérisé en ce que le canal d'échappement (14) est de forme sphérique au niveau de la vanne à clapet (54), un diamètre (DK) de la conformation sphérique étant supérieur à un diamètre (DA) du canal d'échappement.
  10. Dispositif de recirculation de gaz d'échappement (10) selon la revendication 9, caractérisé en ce que le diamètre (DK) de la conformation sphérique est supérieur à une largeur (B) des deux branches (42, 44) de l'échangeur de chaleur (30).
  11. Dispositif de recirculation de gaz d'échappement (10) selon une des revendications précédentes, caractérisé en ce que la séparation structurelle (38) entre les branches (42, 44) de l'échangeur de chaleur (30) est une paroi de séparation.
EP18724238.3A 2017-05-22 2018-05-14 Dispositif de recyclage des gaz d'échappement pour un moteur à combustion interne Active EP3631187B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017111101.8A DE102017111101B4 (de) 2017-05-22 2017-05-22 Abgasrückführvorrichtung für eine Verbrennungskraftmaschine mit Wärmetauscher zur Energierückgewinnung
PCT/EP2018/062307 WO2018215222A1 (fr) 2017-05-22 2018-05-14 Dispositif de recyclage des gaz d'échappement pour un moteur à combustion interne

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EP3631187A1 EP3631187A1 (fr) 2020-04-08
EP3631187B1 true EP3631187B1 (fr) 2024-01-17

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EP (1) EP3631187B1 (fr)
DE (1) DE102017111101B4 (fr)
WO (1) WO2018215222A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021037367A1 (fr) 2019-08-29 2021-03-04 Pierburg Gmbh Système de recirculation des gaz d'échappement pour un moteur à combustion interne et procédé de régulation d'un système de recirculation des gaz d'échappement de ce type
WO2021170250A1 (fr) 2020-02-28 2021-09-02 Pierburg Gmbh Système de recirculation des gaz d'échappement pour moteur à combustion interne et procédé de commande d'un tel système de recirculation des gaz d'échappement

Citations (1)

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Publication number Priority date Publication date Assignee Title
US7581533B1 (en) * 2008-10-09 2009-09-01 Gm Global Technology Operations, Inc. Three mode cooler for exhaust gas recirculation

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
FR2930280B1 (fr) 2008-04-16 2012-07-13 Faurecia Sys Echappement Ligne d'echappement des gaz pour un moteur a combustion interne et ensemble d'echappement associe.
GB2473821A (en) * 2009-09-23 2011-03-30 Gm Global Tech Operations Inc Exhaust gas recirculation system with multiple coolers
EP2302190B1 (fr) * 2009-09-25 2013-12-25 Behr GmbH & Co. KG Système de refoulement des gaz d'échappement
US20140251579A1 (en) * 2013-03-05 2014-09-11 Wescast Industries, Inc. Heat recovery system and heat exchanger

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7581533B1 (en) * 2008-10-09 2009-09-01 Gm Global Technology Operations, Inc. Three mode cooler for exhaust gas recirculation

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DE102017111101A1 (de) 2018-11-22
WO2018215222A1 (fr) 2018-11-29
DE102017111101B4 (de) 2020-06-25
EP3631187A1 (fr) 2020-04-08

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