EP2652305B1 - Circuit de refroidissement d'un moteur avec recirculation des gaz d'échappement et procédé pour faire fonctionner un moteur à combustion interne avec un tel circuit de refroidissement - Google Patents

Circuit de refroidissement d'un moteur avec recirculation des gaz d'échappement et procédé pour faire fonctionner un moteur à combustion interne avec un tel circuit de refroidissement Download PDF

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Publication number
EP2652305B1
EP2652305B1 EP11794043.7A EP11794043A EP2652305B1 EP 2652305 B1 EP2652305 B1 EP 2652305B1 EP 11794043 A EP11794043 A EP 11794043A EP 2652305 B1 EP2652305 B1 EP 2652305B1
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EP
European Patent Office
Prior art keywords
coolant
internal combustion
combustion engine
cooler
egr
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.)
Active
Application number
EP11794043.7A
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German (de)
English (en)
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EP2652305A1 (fr
Inventor
Ekkehard Pott
Dirk Browatzki
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Volkswagen AG
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Volkswagen AG
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Publication of EP2652305A1 publication Critical patent/EP2652305A1/fr
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    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/16—Outlet manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts

Definitions

  • the invention relates to a cooling circuit for an internal combustion engine with an exhaust gas recirculation (EGR), in particular for a diesel internal combustion engine.
  • the internal combustion engine has a coolant inlet and a coolant outlet.
  • the refrigeration cycle further comprises a main radiator having a radiator inlet and a radiator outlet, an EGR radiator having an EGR inlet for coolant and an EGR outlet for coolant and a main control device, in particular a main thermostat, which is arranged in front of the internal combustion engine in the flow direction of the coolant.
  • the invention relates to a method for operating an internal combustion engine with such a cooling circuit.
  • Exhaust gas recirculation serves to recirculate exhaust gas from an exhaust gas side of the internal combustion engine into a fresh air side of the internal combustion engine.
  • the exhaust gas is guided over an exhaust gas recirculation line.
  • an EGR cooler is provided in the exhaust gas recirculation line.
  • a method and a device of the type mentioned are from the document DE 10 2006 023 855 A1 known.
  • This shows an exhaust gas recirculation system for an internal combustion engine with an exhaust gas recirculation line and an exhaust gas recirculation cooler installed in the exhaust gas recirculation line, which is connected to a cooling circuit operating with a liquid coolant.
  • the exhaust gas recirculation cooler has a radiator housing through which coolant can flow, which has at least one exhaust gas inlet, an exhaust gas outlet, a coolant inlet and a coolant outlet.
  • the exhaust gas recirculation cooler contains in its cooler housing a first and a second cooling tube arrangement, wherein the second cooling tube arrangement allows a larger heat flow between exhaust gas and coolant than the first one.
  • an EGR cooler can be controlled by valves and thermostats.
  • the valve serves to increase the volume flow in a fuel heat exchanger of a cryogenically stored fuel and the thermostat to improve the heating behavior of the fuel heat exchanger.
  • a cooling circuit which has a secondary control device for connecting an EGR outlet with a radiator inlet, wherein the secondary control device (12) in the flow direction of the coolant after the EGR cooler (11) is arranged.
  • FR 2 908 457 A3 discloses a refrigeration cycle for an internal combustion engine having a main radiator with an exhaust gas recirculation comprising an EGR cooler.
  • DE 10 2006 020 951 A1 describes a refrigeration cycle for an internal combustion engine having a coolant inlet and a coolant outlet of the internal combustion engine, with a radiator inlet and a radiator outlet of a main radiator, with an exhaust gas recirculation comprising an EGR cooler, which has an EGR inlet for coolant and an EGR outlet for coolant, and with a main control device, which is arranged in the flow direction of the coolant in front of the internal combustion engine, wherein a secondary control device is arranged, which is arranged in the flow direction of the coolant after the EGR cooler.
  • a flow through the EGR cooler with coolant from the radiator outlet of the main radiator in particular after a cold start of the internal combustion engine and / or at low ambient temperatures, but may result in lowering the coolant temperature in the EGR cooler to below 50 degrees Celsius or even to ambient temperature, connected to the above described risk of coking and corrosion.
  • the invention has the object, a cooling circuit of an internal combustion engine of the type mentioned in such a way and operate that on the one hand, the EGR cooler can provide the required performance and on the other hand maximum reliability against coking and corrosion, against formation of local heat in the Cooling circuit, in particular with the risk of damaging the EGR cooler, as well as against boiling coolant is ensured.
  • a cooling circuit which comprises a secondary control device, which is arranged downstream of the exhaust gas recirculation cooler in the flow direction of the coolant, and an exhaust gas recirculation control device, which is arranged upstream of the exhaust gas recirculation cooler in the flow direction of the coolant.
  • the exhaust gas recirculation control device is designed to connect the EGR inlet to the radiator outlet or the coolant outlet. This makes it possible to constantly flow through the EGR cooler with coolant.
  • the exhaust gas recirculation control device may have the functions of a thermostat, a mixing device and / or a valve, in particular a 2/2-way valve or a 3/2-way valve.
  • the secondary control device is designed to connect the EGR outlet to the radiator inlet and / or the coolant inlet or to connect the EGR outlet and the coolant outlet to the radiator inlet.
  • different coolant paths can be switched in the cooling circuit arrangement for different operating states.
  • the returning coolant can be guided as a function of the coolant temperature to the respective units, such as internal combustion engine, main radiator and / or EGR cooler.
  • the radiator outlet is connected to the coolant inlet of the internal combustion engine and the EGR inlet, and the EGR outlet and the coolant outlet of the internal combustion engine are connected to the radiator inlet.
  • the coolant outlet of the internal combustion engine is connected to the EGR inlet of the EGR cooler and via a radiator bypass and the main control device to the coolant inlet of the internal combustion engine.
  • the secondary control device is set such that the EGR outlet of the EGR cooler is connected via the radiator bypass to the coolant inlet of the internal combustion engine.
  • a further favorable design of the cooling circuit is that in a mixed operating state, the exhaust gas recirculation control device is set up, in particular as a function of the coolant temperature, such that the EGR inlet of the EGR cooler is connected to the coolant outlet of the internal combustion engine and / or to the radiator outlet of the main radiator.
  • the exhaust gas recirculation control device is designed such that it is possible to switch between a coolant flow from the coolant outlet of the internal combustion engine and a coolant flow of the radiator outlet of the main radiator or the two coolant streams can be graduated and / or continuously mixed.
  • the sub-control device is switched such that the EGR outlet is connected to the main radiator and / or the radiator bypass and the coolant outlet of the internal combustion engine to the radiator bypass.
  • a method in which the EGR cooler is flowed through as a function of a threshold temperature with coolant from the internal combustion engine and / or coolant from the main radiator, wherein the threshold temperature is set in dependence on the ambient temperature and the coolant temperature.
  • an exhaust gas recirculation control device is provided at the EGR inlet, by means of which the EGR cooler can be switched and / or controllably supplied with optionally coolant-tempered coolant from the main cooler and / or warmer tempered coolant from the coolant outlet of the internal combustion engine.
  • the exhaust gas recirculation control device is preferably designed to be switchable as a 2/3-way valve or as two 2/2-way valves.
  • the coolant return from the EGR cooler is supplied to either the engine or the main radiator.
  • the secondary control device is provided.
  • the coolant flow from the engine, which is not guided to the EGR cooler is in the mixed mode via a radiator bypass to the main control device.
  • the secondary control device and the main control device are designed passive thermostatic and / or active switchable.
  • the circuit of the exhaust gas recirculation control device is preferably carried out as a function of the ambient temperature outside the housing of the internal combustion engine and the coolant temperature such that at the same time an efficient EGR cooling as well as a minimum sooting can be achieved. With increasing ambient temperature, for example over 40 degrees Celsius, the threshold temperature of the exhaust gas recirculation control device is lowered.
  • the usual threshold temperature of the main regulator is about 90 degrees Celsius at a coolant temperature. If the threshold temperature is exceeded, the coolant inlet of the internal combustion engine is coupled to the radiator outlet of the main radiator.
  • the threshold temperature of the exhaust gas recirculation control device can also be applied to the main control device. Thus, the main control device, for example, at an ambient temperature above 40 degrees Celsius, lowered to a threshold temperature for the coolant of 50 degrees Celsius. If the coolant outlet is connected to the EGR inlet, overheating of the coolant in the EGR cooler can be avoided.
  • the cooling circuit After reaching the operating temperature in the internal combustion engine and / or at a high ambient temperature, the cooling circuit is operated in a load operating state. In this case, both the internal combustion engine and the EGR cooler are flowed through with coolant from the main cooler.
  • the coolant outlet of the internal combustion engine is connected to the EGR inlet of the EGR cooler and via a radiator bypass and a main control device with a coolant inlet of the internal combustion engine.
  • the cooling circuit is switched in particular before reaching the mixed operating state.
  • FIGS. 1 . 2 and 3 show a cooling circuit 1 of an internal combustion engine 2 with an exhaust gas recirculation.
  • the internal combustion engine 2 has a coolant inlet 3 and a coolant outlet 4.
  • a main radiator 5 which has a radiator inlet 6 and a radiator outlet 7.
  • Exhaust gas recirculation for recirculating exhaust gas from an exhaust side of the engine 2 to a fresh air side of the engine 2 includes an EGR cooler 8 having an EGR inlet 9 for coolant and an EGR outlet 10 for coolant.
  • a main control device 11, a secondary control device 12 and an exhaust gas recirculation control device 13 are provided in the refrigeration cycle 1.
  • the main control device 11 is preferably designed as a thermostat.
  • the main control device 11 is arranged upstream of the internal combustion engine 2 in the flow direction of the coolant.
  • the secondary control device 12 is arranged downstream of the EGR cooler 8 in the flow direction of the coolant.
  • the exhaust gas recirculation control device 13 is arranged upstream of the EGR cooler 8 in the flow direction of the coolant.
  • the coolant inlet 3 is connected to a main coolant pump 14.
  • the main coolant pump 14 is arranged between the main control device 11 and the internal combustion engine 2.
  • the exhaust gas recirculation control device 13 is, as in the Figures 2 and 3 shown, preferably designed as a 3/2-way valve.
  • FIG. 1 shows the refrigeration cycle 1 in a start operating state.
  • the refrigeration cycle 1 is set at a cold start of the internal combustion engine 2.
  • the exhaust gas recirculation control device 13 is set such that the coolant outlet 4 of the internal combustion engine 2 is connected to the EGR inlet 9 of the EGR cooler 8. This ensures that the EGR cooler 8 is heated quickly by means of the waste heat of the internal combustion engine 2 to its operating temperature.
  • the coolant outlet 4 of the internal combustion engine 2 is further connected to the main regulator 11 via the main cooler bypass 16.
  • the auxiliary control device 12 is set in the start operation state such that the EGR outlet 10 of the EGR cooler 8 is connected to the main radiator bypass 16 and thus to the main regulator 11 and finally to the coolant inlet 3 of the engine 2.
  • the coolant line 15 and the coolant line 18 are of coolant flows through.
  • the coolant line 17, the main cooler 5, the radiator inlet 6, the radiator outlet 7 and the coolant line 19 between the radiator outlet 7 and the exhaust gas recirculation control device 13 are not flowed through by coolant.
  • the exhaust gas recirculation control device 13 is shown here in a variant embodiment as a 3/2-way valve.
  • FIG. 2 shows the refrigeration cycle 1 in a mixed mode.
  • the exhaust gas recirculation control device 13 is set such that the radiator outlet 7 of the main radiator 5 is connected to the EGR inlet 9 of the EGR cooler 8.
  • the sub-controller 12 is set in the mixed operation state such that the EGR outlet 10 of the EGR cooler 8 is connected to the radiator inlet 6 of the main radiator 5.
  • the coolant outlet 4 of the internal combustion engine 2 is connected to the main regulator 11 via the main cooler bypass 16.
  • the coolant line 15 between the coolant outlet 4 of the internal combustion engine 2 and the exhaust gas recirculation control device 13, the coolant line 17 between the radiator outlet 7 of the main cooler 5 and the main control device 11 and the coolant line 18 between the coolant outlet 4 of the engine 2 and the radiator bypass 16 and the secondary control device 12 can in Mixed operating state to be flowed through only by a subset of the circulated by the internal combustion engine 2 main coolant pump 14 circulating coolant flow.
  • the flow through the coolant line 17 and the coolant line 18 is optionally possible and essentially dependent on the switching state of the main control device 11 and the secondary control device 12.
  • the flow direction in the coolant line 18 is also dependent on the switching state of the main controller 11 and / or the secondary controller 12.
  • Die Exhaust gas recirculation control device 13 is shown in this figure in a variant embodiment as a mixing device.
  • FIG. 3 shows the refrigeration cycle 1 in a load operating state.
  • the refrigeration cycle 1 is set in the load operating state when the coolant temperature at the coolant inlet 3 of the internal combustion engine 2 and / or at the EGR inlet 9 of the EGR cooler 8 is greater than a threshold value.
  • This threshold is chosen below the boiling point of the coolant, preferably greater than or equal to 70 degrees Celsius.
  • the load operating state is set when the ambient temperature is greater than a threshold, in particular greater than 40 degrees Celsius and at the same time exceeds the coolant temperature 50 degrees Celsius.
  • the exhaust gas recirculation control device 13 is set such that the radiator outlet 7 of the main radiator 5 is connected to the EGR inlet 9 of the EGR cooler 8. Furthermore, in the load operating state, the coolant inlet 3 of the internal combustion engine 2 is connected to the radiator outlet 7 of the main radiator 5.
  • the secondary control device 12 is set in the load operating state such that the
  • Coolant outlet 4 of the internal combustion engine 2 and the EGR outlet 10 of the EGR cooler 8 is connected to the radiator inlet 6 of the main radiator 5.
  • the coolant line 15 between the coolant outlet 4 of the internal combustion engine 2 and the exhaust gas recirculation control device 13 and a main cooler bypass 16 between the coolant outlet 4 of the internal combustion engine 2 and the main control device 11 are not flowed through by coolant in the load operating state.

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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 (7)

  1. Circuit de refroidissement (1) pour un moteur à combustion interne (2), comprenant
    - une entrée de réfrigérant (3) et une sortie de réfrigérant (4) du moteur à combustion interne (2),
    - une entrée de radiateur (6) et une sortie de radiateur (7) d'un radiateur principal (5),
    - une recirculation de gaz d'échappement comprenant un radiateur AGR (8) qui présente une entrée AGR (9) de réfrigérant et une sortie AGR (10) de réfrigérant, et
    - un dispositif de régulation principal (11) qui est disposé dans la direction d'écoulement du réfrigérant avant le moteur à combustion interne (2),
    dans lequel le circuit de refroidissement (1) comprend
    - un dispositif de régulation auxiliaire (12) pour relier la sortie AGR (10) à l'entrée de radiateur (6) et/ou à l'entrée de réfrigérant (3) ou pour relier la sortie AGR (10) et la sortie de réfrigérant (4) à l'entrée de radiateur (6) dans la direction d'écoulement du réfrigérant après le radiateur AGR (8), et
    - un dispositif de régulation de recirculation de gaz d'échappement (13) qui est disposé dans la direction d'écoulement du réfrigérant avant le radiateur de recirculation de gaz d'échappement (8),
    caractérisé en ce que
    dans un état de fonctionnement initial, la sortie de réfrigérant (4) du moteur à combustion interne (2) est reliée à l'entrée AGR (9) du radiateur AGR (8) et, par le biais d'un contournement de radiateur (16) ainsi que d'un dispositif de régulation principal (11), à l'entrée de réfrigérant (3) du moteur à combustion interne (2) et le dispositif de régulation auxiliaire (12) est ajusté de telle sorte que la sortie AGR (10) du radiateur AGR (8) soit reliée par le biais du contournement de radiateur (16) à l'entrée de réfrigérant (3) du moteur à combustion interne (2).
  2. Circuit de refroidissement (1) selon la revendication 1, caractérisé en ce que l'entrée de réfrigérant (3) est reliée à une pompe de réfrigérant principale (14) qui est notamment disposée entre le dispositif de régulation principal (11) et le moteur à combustion interne (2).
  3. Circuit de refroidissement (1) selon au moins l'une quelconque des revendications 1 ou 2, caractérisé en ce que le dispositif de régulation de recirculation de gaz d'échappement (13) est réalisé de manière à relier l'entrée AGR (9) à la sortie de radiateur (7) ou à la sortie de réfrigérant (4).
  4. Circuit de refroidissement (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que dans un état de fonctionnement en charge, la sortie de radiateur (7) est reliée à l'entrée de réfrigérant (3) du moteur à combustion interne (2) et à l'entrée AGR (9) et la sortie AGR (10) et la sortie de réfrigérant (4) du moteur à combustion interne (2) sont reliées à l'entrée de radiateur (6).
  5. Circuit de refroidissement (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que dans un état de fonctionnement mixte, le dispositif de régulation de recirculation de gaz d'échappement (13), notamment en fonction de la température du réfrigérant, est prévu de telle sorte que l'entrée AGR (9) du radiateur AGR (8) soit reliée à la sortie de réfrigérant (4) du moteur à combustion interne (2) et/ou à la sortie de radiateur (7) du radiateur principal (5).
  6. Procédé pour faire fonctionner un moteur à combustion interne (2) comprenant un circuit de refroidissement (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le radiateur AGR (8), en fonction d'une température seuil, est parcouru par du réfrigérant provenant du moteur à combustion interne (2) et/ou par du réfrigérant provenant du radiateur principal (5), la température seuil étant définie en fonction de la température environnante et/ou de la température du réfrigérant.
  7. Procédé selon la revendication 6, caractérisé en ce que dans le cas d'un démarrage à froid du moteur à combustion interne (2), la sortie de réfrigérant (4) du moteur à combustion interne (2) est reliée à l'entrée AGR (9) du radiateur AGR (8) et par le biais d'un contournement de radiateur (16) ainsi que d'un dispositif de régulation principal (11), à une entrée de réfrigérant (3) du moteur à combustion interne (2).
EP11794043.7A 2010-12-18 2011-12-05 Circuit de refroidissement d'un moteur avec recirculation des gaz d'échappement et procédé pour faire fonctionner un moteur à combustion interne avec un tel circuit de refroidissement Active EP2652305B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010055072A DE102010055072A1 (de) 2010-12-18 2010-12-18 Kühlkreis für eine Brennkraftmaschine mit einer Abgasrückführung und Verfahren zum Betrieb einer Brennkraftmaschine mit einem solchen Kühlkreis
PCT/EP2011/006084 WO2012079715A1 (fr) 2010-12-18 2011-12-05 Circuit de refroidissement pour un moteur à combustion interne comportant une recirculation des gaz d'échappement et procédé de fonctionnement d'un moteur à combustion interne équipé d'un tel circuit de refroidissement

Publications (2)

Publication Number Publication Date
EP2652305A1 EP2652305A1 (fr) 2013-10-23
EP2652305B1 true EP2652305B1 (fr) 2018-02-21

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EP11794043.7A Active EP2652305B1 (fr) 2010-12-18 2011-12-05 Circuit de refroidissement d'un moteur avec recirculation des gaz d'échappement et procédé pour faire fonctionner un moteur à combustion interne avec un tel circuit de refroidissement

Country Status (4)

Country Link
EP (1) EP2652305B1 (fr)
CN (1) CN103370524A (fr)
DE (1) DE102010055072A1 (fr)
WO (1) WO2012079715A1 (fr)

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GB2502833B (en) * 2012-06-06 2017-07-12 Gm Global Tech Operations Llc Exhaust gas recirculation (EGR) cooling system
JP6230585B2 (ja) * 2015-11-18 2017-11-15 本田技研工業株式会社 内燃機関の排気浄化装置
JP6655220B2 (ja) * 2017-06-09 2020-02-26 日立オートモティブシステムズ株式会社 内燃機関の冷却装置及び冷却方法
DE102019208959A1 (de) 2019-06-19 2020-12-24 Volkswagen Aktiengesellschaft Brennkraftmaschine mit einem einen AGR-Kühler umfassenden Kühlsystem

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FR2861812B1 (fr) * 2003-10-31 2006-06-23 Renault Sas Agencement de moteur comprenant une recirculation des gaz d'echappement
DE10358311A1 (de) 2003-12-11 2005-07-14 Bayerische Motoren Werke Ag System und Verfahren zur Verdampfung eines kryogen gespeicherten Kraftstoffs
JP2007519853A (ja) * 2004-02-01 2007-07-19 ベール ゲーエムベーハー ウント コー カーゲー 排気および給気を冷却するための装置
AT7762U1 (de) * 2004-06-17 2005-08-25 Avl List Gmbh Brennkraftmaschine mit flüssigkeitskühlung
JP2006348793A (ja) * 2005-06-14 2006-12-28 Toyota Motor Corp 内燃機関の排気還流装置
DE102006020951A1 (de) * 2005-07-28 2007-02-01 Audi Ag Kühlsystem für ein Fahrzeug und Verfahren zum Betreiben eines Kühlsystems
JP4497082B2 (ja) * 2005-11-17 2010-07-07 トヨタ自動車株式会社 エンジンの冷却媒体循環装置
JP4802811B2 (ja) * 2006-03-29 2011-10-26 いすゞ自動車株式会社 エンジンの冷却水回路
DE102006023855A1 (de) 2006-05-19 2007-11-22 Mahle International Gmbh Abgasrückführeinrichtung
FR2908457A3 (fr) * 2006-11-10 2008-05-16 Renault Sas Systeme de refroidissement d'un moteur thermique
FR2914357B1 (fr) * 2007-03-26 2009-05-01 Renault Sas Systeme et procede de refroidissement d'un groupe motopropulseur de vehicule automobile.
US7461640B1 (en) * 2007-09-20 2008-12-09 Honeywell International, Inc. Cooling system with boiling prevention
JP4561817B2 (ja) * 2007-12-04 2010-10-13 トヨタ自動車株式会社 内燃機関
WO2009085055A1 (fr) * 2008-01-03 2009-07-09 Mack Trucks, Inc. Circuit de refroidissement de recirculation des gaz d'échappement
DE102008008495A1 (de) * 2008-02-11 2009-08-13 Pierburg Gmbh Verfahren zur Steuerung einer Kraftfahrzeug-Verbrennungsmotoranordnung
DE102008015591A1 (de) * 2008-03-26 2009-10-01 Volkswagen Ag Aufgeladene Brennkraftmaschine mit Abgasrückführung

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DE102010055072A1 (de) 2012-06-21
CN103370524A (zh) 2013-10-23
WO2012079715A1 (fr) 2012-06-21
EP2652305A1 (fr) 2013-10-23

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