[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP2133547A1 - Abgasrückführungssystem - Google Patents

Abgasrückführungssystem Download PDF

Info

Publication number
EP2133547A1
EP2133547A1 EP08158166A EP08158166A EP2133547A1 EP 2133547 A1 EP2133547 A1 EP 2133547A1 EP 08158166 A EP08158166 A EP 08158166A EP 08158166 A EP08158166 A EP 08158166A EP 2133547 A1 EP2133547 A1 EP 2133547A1
Authority
EP
European Patent Office
Prior art keywords
egr
exhaust gas
module
mixing
air intake
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.)
Withdrawn
Application number
EP08158166A
Other languages
English (en)
French (fr)
Inventor
Eduardo O De Almeida
Jim Wotherspoon
Tim X. Chambers
Rober C. Wilkie
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.)
Perkins Engines Co Ltd
Original Assignee
Perkins Engines Co Ltd
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 Perkins Engines Co Ltd filed Critical Perkins Engines Co Ltd
Priority to EP08158166A priority Critical patent/EP2133547A1/de
Priority to PCT/EP2009/004004 priority patent/WO2009149868A1/en
Priority to JP2011512875A priority patent/JP2011522989A/ja
Priority to CN200980121939.0A priority patent/CN102057152B/zh
Priority to RU2011100153/06A priority patent/RU2011100153A/ru
Priority to US12/997,164 priority patent/US8881712B2/en
Publication of EP2133547A1 publication Critical patent/EP2133547A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
    • 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
    • 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
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • 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

Definitions

  • the disclosure relates to an exhaust gas recirculation system for an internal combustion engine.
  • Exhaust gas recirculation is a technique commonly used for controlling the generation of undesirable pollutant gases and particulate matter in the operation of internal combustion engines, such as internal combustion engines provided with a turbocharger. It is known to remove exhaust gas to be recirculated upstream of an exhaust gas driven turbine associated with the turbocharger. In many EGR-applications, the exhaust gas is diverted directly from the exhaust manifold. Likewise, the recirculated exhaust gas may be reintroduced to the intake air stream downstream of a compressor of the turbocharger and an air-to-air aftercooler. For example, in many EGR-applications the recirculated exhaust gas is reintroduced to the intake manifold.
  • EP-A-0 869 275 relates to such an EGR-system.
  • the present disclosure is directed, at least in part, to improving or overcoming one or more aspects of prior EGR-systems
  • an exhaust gas recirculation system may be provided for an internal combustion engine.
  • the engine may have an air intake system with an upstream part and a downstream part.
  • the EGR-system may include an EGR-module that may be mountable as a single unit in the air intake system between the upstream part and the downstream part.
  • the EGR-module may include an air intake channel having an air intake opening and a mixture outlet opening.
  • the air intake opening may be connectable to the upstream part.
  • the mixture outlet opening may be connectable to the downstream part.
  • the EGR-module may include an exhaust gas intake opening and a mixing assembly that may be configured for mixing exhaust gas introduced in the exhaust gas intake opening and air introduced in the air intake channel via the air intake opening.
  • a method for exhaust gas recirculation in an internal combustion engine having an air intake system with an upstream part and a downstream part may be provided.
  • the method may include providing an EGR-module in the air intake system between the upstream part and the downstream part.
  • the method may further include supplying intake air to an EGR-module, supplying exhaust gas to the EGR-module, mixing the intake air and the exhaust gas in the EGR-module and discharging the mixture from the EGR-module into the downstream part.
  • an internal combustion engine with such an exhaust gas recirculation system may be provided.
  • Fig. 1 is a schematic view of an internal combustion engine with an EGR-system
  • Fig. 2 is a perspective view of a first exemplary embodiment of an EGR-module
  • Fig. 3 is a perspective transverse cross section of the embodiment of Fig. 2 ;
  • Fig. 4 is a perspective longitudinal cross section of the embodiment of Fig. 2 ;
  • Fig. 5 is a perspective view of a second exemplary embodiment
  • Fig. 1 schematically shows an internal combustion engine having an engine block 12.
  • the internal combustion engine may have an air intake system and an exhaust system.
  • the air intake system may include an air intake passage 14, 16, 18, 20.
  • the air intake passage may include a compressor 22, a charged air cooler 24, an EGR-module 26 and an intake manifold 28.
  • the exhaust system may include an exhaust passage 30, 32.
  • the exhaust passage may include an exhaust manifold 34 and a turbine 36.
  • the compressor 22 may be connected to the turbine 36 via a turbocharger shaft 38.
  • the compressor 14 may also be driven by another element, for example, a shaft that is driven by an electric motor or by the internal combustion engine 12 via a transmission. In such a case the turbine 36 may not be present.
  • the air intake system may include various additional components.
  • the air intake system may also not include air cooler 24 or compressor 22.
  • the exhaust system may also include various additional components, for example, an exhaust after-treatment system.
  • the exhaust after-treatment system may, for example, include a diesel particulate filter and a diesel oxygen catalyst.
  • An exhaust recirculation passage 40 may be present.
  • An inlet 42 of the exhaust recirculation passage 26 may emanate from the exhaust manifold 34.
  • An outlet of the exhaust gas recirculation passage 40 may emanate in an exhaust gas intake opening 44 of the EGR-module 26.
  • the exhaust recirculation passage 40 may include an EGR-cooler 46.
  • the EGR-module 26 may be mountable as a single unit in the air intake system between an upstream part 18 of the air intake passage and a downstream part 20 of the air intake passage of the air intake system.
  • the EGR-module 26 may have an air intake channel 48.
  • the air intake channel 48 may have an air intake opening 50 and a mixture outlet opening 52.
  • the air intake opening 50 may be connectable to the upstream part 18 of the air intake passage of the air intake system.
  • the mixture outlet opening 52 may be connectable to the downstream part 20 of the air intake passage of the air intake system.
  • the EGR-module 26 may also have an exhaust gas intake opening 44 that may be connected to an outlet of the exhaust recirculation passage 40.
  • the EGR-module 26 may include an EGR-valve 54 that may control the amount of exhaust gas that may be recirculated.
  • the EGR-module 26 may also include at least one non-return valve 56 that prevents that intake air present in air intake channel 48 flows into the EGR-passage 40.
  • the non-return valves 40 may be of any type. Reed valves are particularly suitable because of the short response time and the low mass of the valve membranes of a reed valve.
  • the EGR-valve 54 and the non-return valves 56 may be in an exhaust gas passage 64 in the EGR-module 26.
  • the air intake channel 48 of the EGR-module 26 may include a throttle valve 58 for controlling the amount of intake air that is passing the air intake channel 48 and is delivered to the downstream part 20 of the air intake system.
  • the EGR-module 26 may also include a mixing assembly 60 that may be configured for mixing exhaust gas introduced in the exhaust gas intake opening 44 and air introduced in the air intake channel 48 via the air intake opening 50.
  • the mixing assembly 60 may be downstream of the non-return valves in the exhaust gas passage 64 of the EGR-module 26.
  • the mixing assembly 60 may be accommodated in a mixing body 62 that may, for example, be a casting. The mixing assembly will be described in more detail with reference to the embodiments of EGR-modules shown in Figs. 2-5 .
  • the EGR-module 126 may include a mixing body 162 that may at least partly define the air intake channel 148.
  • the mixing body 162 may have a throttle valve body flange 166, an EGR-valve body flange 168 and an outlet flange 184 adjacent the mixture outlet opening 152. With the flange 184 a downstream part of the intake system may be connected.
  • the EGR-module 126 may also include a throttle valve body 170 that may be connected to the throttle valve body flange 166 of the mixing body 162.
  • the throttle valve body 170 may include a throttle valve motor 178.
  • the throttle valve may include a valve flap 180 and a valve shaft 182 connected with the valve flap 180 for regulating the position of the valve flap 180 relative to the air intake channel 148.
  • the valve shaft 182 may extend perpendicular to a central axis of the air intake channel 148 at that position.
  • the valve shaft 182 may be driven by the throttle valve motor 178. This may be effected directly or via a transmission. Other types of throttle valves are feasible as well.
  • An EGR-valve body 172 may be connected to the EGR-valve body flange 168.
  • the EGR-valve body 172 may have a motor flange 174.
  • An EGR-valve motor 176 may be connected to the motor flange 174 of the EGR-valve body 172.
  • the EGR-valve body 172 may include an EGR-valve member 186 for regulating the amount of exhaust gas that may pass the EGR-module 126.
  • the EGR-valve body 172 may also include an exhaust gas intake opening 144 that may be surrounded by an EGR-passage connecting flange 145 and may be the upstream end of the exhaust gas passage 164 in the EGR-module 126.
  • the non-return valve 140 may have the form of at least one reed valve 140.
  • the at least one reed valve 140 may have a reed valve body 190 with a reed valve flange 192 that may be positioned between the EGR-valve body 172 and the mixing body 162.
  • the non-return valve may be clamped in between the EGR-valve body 172 and the mixing body 162. This is clearly visible in Figs. 3 and 4 .
  • the reed valves 140 may include membranes 188 that are connected with one end to the reed valve body 190. Also other solutions to mount non-return valves 140 in the exhaust gas passage 164 are feasible.
  • the mixing assembly 140 may include at least one mixing tube 194 having a mixing tube wall with a plurality of mixing tube ports 196.
  • the at least one mixing tube 194 may have a central axis that extends parallel to the mixing tube wall.
  • the air intake channel 148 that is at least partly bounded by the mixing body 162, may have a central axis that extends parallel to a wall bounding the air intake channel 148.
  • the central axis of the mixing tube 194 may be perpendicular to the central axis of the air intake channel 148 adjacent the mixing tube 194 so that, in use, the flow of air in the air intake channel adjacent the mixing tube 194 is substantially perpendicular to the exhaust gas leaving the mixing tube ports 196.
  • the valve shaft 182 of the throttle valve 150 has a longitudinal axis that may be parallel to the central axis of the at least one mixing tube 194.
  • the mixing tube ports 196 may be orientated relative to the valve flap 180 of the throttle valve 150 so, that, when the valve flap 180 is in the entirely opened position (as shown in Fig. 4 ) exhaust gas leaving the mixing tube ports 196 may have a flow direction perpendicular to the main flow direction of the intake air adjacent the mixing tube 194.
  • the mixing tube 194 may have a mixing tube flange 198 and the mixing body 162 may have a mixing tube mounting surface 200 for accommodating the mixing tube flange 198.
  • the mixing body 162 may have a circlip groove 202 adjacent the mixing tube mounting surface 200.
  • the mixing tube 192 may be connected to the mixing body 162 by a circlip 201.
  • the circlip 201 may be a flexible ring member with an interruption in the ring member, the interruption being bounded by two ends of the ring. The circumference of the ring member may be diminished by flexing the ends of the ring adjacent the interruption towards each other.
  • Other mixing assemblies are also feasible.
  • the mixing tube 194 may have an exhaust gas inlet adjacent the mixing tube flange 198.
  • the other end of the mixing tube may be closed off by an end wall 195.
  • the mixing tube 194 may be closed off adjacent the end that is connected with the mixing tube flange 198.
  • the end of the mixing tube 194 remote from the mixing tube flange 198 may be open and form an exhaust gas inlet.
  • the EGR-module 126 may include various sensors. For example a temperature sensor 204 and a pressure sensor 206. In the embodiment shown in Figs. 2-4 those sensors are positioned near the mixture outlet opening 152 of the EGR-module 126. Also more than one temperature sensor and more than one pressure sensor may be present. Also other sensors, for example, sensors for measuring the concentration of constituents of the mixture may be present.
  • Fig. 5 shows a second embodiment 226 that is mounted on an engine block 212.
  • the EGR-module may have a mixing body 162, in which a mixing assembly 160 may be accommodated.
  • the mixing assembly 160 may include a mixing tube 194.
  • the mixing tube in Fig. 5 may be closed off adjacent the end that is connected with the mixing tube flange 198.
  • the end of the mixing tube 194 remote from the mixing tube flange 198 may be open and form the inlet of the mixing tube 194.
  • the mixing body 162 may have a throttle valve body flange 166. On the throttle valve body flange 166 a throttle valve body 170 may be mounted. The throttle valve body 170 may define the air intake opening 150 of the EGR-module 226. The air intake opening 150 may be connected to an upstream part 218 of the air intake system.
  • the mixing assembly 160 may be connected to an exhaust gas passage 264 of the EGR-module 226. Near an upstream end of that exhaust gas passage 264 an EGR-valve body flange 168 may be provided.
  • An EGR-valve body 172 may be connected to the EGR-valve body flange 168.
  • the exhaust gas passage 264 of the EGR-module 226 may include non-return valve 140. In the embodiment of Fig.
  • EGR-module 226 5 two sets reed valves 140 are accommodated in the EGR-module 226. However, it is contemplated that a different number of reed valves is accommodated in the EGR-module. The number may depend on the amount of exhaust gas that may be recirculated.
  • An exhaust gas recircualtion passage connecting flange 145 that may be provided on the EGR-valve body 172 and may be connected to an exhaust gas recirculation passage 240.
  • the EGR-valve body 172 may also include an EGR-valve member 186 that may be controlled by an EGR-valve motor 176.
  • An EGR-system including an EGR-module 26, 126, 226 as described may be applied in any internal combustion engine.
  • a method for exhaust gas recirculation in an internal combustion engine having an air intake system with an upstream part and a downstream part may be provided.
  • the method may include providing an EGR-module 26, 126, 226 in the air intake system between the upstream part 18, 218 and the downstream part 20, 220.
  • the method may also include supplying intake air 250 to an EGR-module 26, 126, 226 and supplying exhaust gas 252 to the EGR-module 26, 126, 226. This has been indicated in Figs. 2 , 5 and 6 by the arrows 250, 252.
  • the intake air 250 and the exhaust gas 252 may be mixed.
  • the mixture 254 may be discharged form the EGR-module 26, 126, 226 into the downstream part 20, 220 of the air intake system.
  • Fig. 1 the engine block 12 of an internal combustion engine is shown.
  • Exhaust gas leaving the engine block 12 via the exhaust manifold 34 and exhaust passage 30 may drive a turbine 36 of a turbocharger.
  • the exhaust gas may leave the turbine 36 via exhaust passage 32.
  • the exhaust gas may be subjected to after-treatment in the exhaust system downstream of the turbine 36.
  • the turbine 36 may drive a shaft 38 that may drive a compressor 22.
  • a part 252 of the exhaust gas may be recirculated via exhaust gas recirculation passage 40. That part 252 of the exhaust gas may be cooled in the EGR-cooler 46. The cooled exhaust gas may enter the EGR-module 26 via the exhaust gas intake opening 44. The amount of exhaust gas 252 taken in by the EGR-module 26 may be regulated by an EGR-valve 54 in the EGR-module 26. The exhaust gas taken in by EGR-module 26 may pass a non-return valve 56 and may then be supplied to the mixing assembly 60 that may be accommodated in the mixing body 62. The non-return valve 56 may prevent flowing back of exhaust gas 252 when the intake air pressure is higher than the exhaust gas pressure adjacent the non-return valve 56.
  • Intake air may enter the air intake system via air intake passage 14. Subsequently the intake air may be compressed by the compressor 22. The compressed air may flow via air intake passage 16 to air cooler 24. From the air cooler 24, the intake air may flow via intake air passage 18 to the EGR-module 26.
  • the EGR-module 26 has an intake air opening 50 and an air intake channel 48.
  • the amount of intake air 250 taken in by the EGR-module 26 may be regulated by the throttle valve 58 in the EGR-module 26.
  • the intake air 250 may also be supplied to the mixing assembly 60. At the mixing assembly 60, the exhaust gas and the intake air may mix.
  • the mixture 254 thus obtained may leave the EGR-module 26 via mixture outlet opening 52.
  • the mixture 254 may be supplied via the downstream part 20 of the air intake system to the intake manifold 28 and may subsequently be supplied to the combustion chambers of the internal combustion engine.
  • the non-return 56 valve may be embodied as a reed valve 140 as shown in the embodiments of Figs. 2-6 .
  • the reed valve membranes 188 of the reed valves 140 may flex when the pressure upstream from the reed valve 140 is higher then the pressure downstream of reed valve 140. Such a flexing opens the reed valve 140. Because the membranes 188 are light and flex easily, reed valves 140 have a very short response time and even small pressure differences are sufficient for opening and closing the reed valves 140. Thus, the amount of exhaust gas that may be recirculated may be optimal.
  • the mixing of intake air 250 and exhaust gas 252 may be performed with any suitable mixing assembly.
  • a good mixing may be obtained by supplying multiple streams of exhaust gas in an intake air stream in the EGR-module with an exhaust gas flow direction that may be substantially perpendicular to the intake air flow direction in the EGR-module at that position.
  • Such a flow pattern may be obtained with the mixing tube 194 as shown in the first and the second embodiment shown in Figs. 3-5 .
  • the mixing tube axis and the valve shaft axis may be parallel. Such an orientation may be beneficial for the flow rate of the intake air and may also be beneficial for the mixing performance.
  • the position of the throttle valve 58 that may be embodied as the valve flap 180 connected to a valve shaft 182, may be controlled by the throttle valve motor 178.
  • the throttle valve motor 178 may receive a throttle positioning signal outputted by a controller that may receive various input signals.
  • One of the input signals for the controller may be the load to be driven by the internal combustion engine or a position of a fuel control lever that may be operated by a user.
  • the position of the EGR-valve 58 may be controlled by the EGR valve motor 176 and may be determined by a controller on the basis of various input signals of the controller.
  • the input signals may also include signals obtained from the temperature sensor 204 and the pressure sensor 206 in the EGR-module 126.
  • other sensors and signals available in the internal combustion engine such as load sensors, speed sensors, injector steering signals, may be used for determining the position of the throttle valve 58, 180 and the EGR-valve 58, 186.
  • the EGR-system with the EGR-module as described may result in an improved mixing of intake air and recirculated exhaust air. Especially because the dimensions of the exhaust gas passages and the intake air passages in the EGR-module adjacent the mixing assembly are clearly defined, the mixing behavior of the EGR-system may be predictable and may be optimized. Because all components that regulate the exhaust gas supply and intake air supply are integrated in an EGR-module configured as a unit, a single control connection may be feasible for controlling both the exhaust gas recirculation valve 58, 186 and the throttle valve 58, 180. A single control connection may be less vulnerable to malfunction.
  • the EGR-module may be supplied by an external supplier as a unit.
  • the mixing assembly 60, 160 may be configured so that an optimal mixing result may be obtained in a limited space.
  • the length of the passages that form the fluid connection between EGR-valve and the outlet ports and the inlet ports of the combustion chambers of the engine may be relevant for the pressure difference between intake air and the exhaust gas at the EGR-valve. For optimizing the pressure difference it may be desired to place the EGR-valve and the non-return valve close to the intake manifold.
  • the EGR-module may be placed at a position near the intake manifold. Consequently, an optimal pressure difference between exhaust gas and intake air may be obtained while still keeping a good mixing performance. Thus, a higher degree of exhaust gas recirculation may be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP08158166A 2008-06-12 2008-06-12 Abgasrückführungssystem Withdrawn EP2133547A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08158166A EP2133547A1 (de) 2008-06-12 2008-06-12 Abgasrückführungssystem
PCT/EP2009/004004 WO2009149868A1 (en) 2008-06-12 2009-06-04 Exhaust gas mixing system
JP2011512875A JP2011522989A (ja) 2008-06-12 2009-06-04 排気ガス混合システム
CN200980121939.0A CN102057152B (zh) 2008-06-12 2009-06-04 废气混合系统
RU2011100153/06A RU2011100153A (ru) 2008-06-12 2009-06-04 Система смешивания выхлопных газов
US12/997,164 US8881712B2 (en) 2008-06-12 2009-06-04 Exhaust gas mixing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08158166A EP2133547A1 (de) 2008-06-12 2008-06-12 Abgasrückführungssystem

Publications (1)

Publication Number Publication Date
EP2133547A1 true EP2133547A1 (de) 2009-12-16

Family

ID=39942801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08158166A Withdrawn EP2133547A1 (de) 2008-06-12 2008-06-12 Abgasrückführungssystem

Country Status (1)

Country Link
EP (1) EP2133547A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949342A (zh) * 2010-10-11 2011-01-19 安徽全柴动力股份有限公司 一种柴油机进气接管
WO2014005884A1 (de) * 2012-07-04 2014-01-09 Pierburg Gmbh Rückschlagventilvorrichtung für eine verbrennungskraftmaschine
DE102017212393A1 (de) 2017-07-19 2019-01-24 Mahle International Gmbh Bereichsweise flexibel ausgebildete Abgasrückführleitung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207714A (en) * 1991-01-25 1993-05-04 Aisin Seiki Kabushiki Kaisha Exhausted gas recycle device
JPH11294266A (ja) * 1998-04-09 1999-10-26 Mitsubishi Motors Corp 排気ガス再循環装置
DE19937781A1 (de) 1999-08-10 2001-02-15 Mann & Hummel Filter Brennkraftmaschine mit Sekundärlufteinblaßsystem
US20030115871A1 (en) * 2001-12-19 2003-06-26 Feucht Dennis D. Bypass venturi assembly for an exhaust gas recirculation system
US20060060173A1 (en) 2004-09-21 2006-03-23 Puning Wei Vortex mixing system for exhaust gas recirculation (EGR)
WO2006129371A1 (ja) 2005-06-03 2006-12-07 Hitachi, Ltd. Ｅｇｒガス混合装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207714A (en) * 1991-01-25 1993-05-04 Aisin Seiki Kabushiki Kaisha Exhausted gas recycle device
JPH11294266A (ja) * 1998-04-09 1999-10-26 Mitsubishi Motors Corp 排気ガス再循環装置
DE19937781A1 (de) 1999-08-10 2001-02-15 Mann & Hummel Filter Brennkraftmaschine mit Sekundärlufteinblaßsystem
US20030115871A1 (en) * 2001-12-19 2003-06-26 Feucht Dennis D. Bypass venturi assembly for an exhaust gas recirculation system
US20060060173A1 (en) 2004-09-21 2006-03-23 Puning Wei Vortex mixing system for exhaust gas recirculation (EGR)
WO2006129371A1 (ja) 2005-06-03 2006-12-07 Hitachi, Ltd. Ｅｇｒガス混合装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949342A (zh) * 2010-10-11 2011-01-19 安徽全柴动力股份有限公司 一种柴油机进气接管
WO2014005884A1 (de) * 2012-07-04 2014-01-09 Pierburg Gmbh Rückschlagventilvorrichtung für eine verbrennungskraftmaschine
US9624878B2 (en) 2012-07-04 2017-04-18 Pierburg Gmbh Non-return valve device for an internal combustion engine
DE102017212393A1 (de) 2017-07-19 2019-01-24 Mahle International Gmbh Bereichsweise flexibel ausgebildete Abgasrückführleitung
US10480459B2 (en) 2017-07-19 2019-11-19 Mahle International Gmbh Exhaust gas recirculation line embodied to be partially flexible

Similar Documents

Publication Publication Date Title
EP2133548A1 (de) Gasmischsystem
US7617678B2 (en) Exhaust throttle-EGR valve module for a diesel engine
US8881712B2 (en) Exhaust gas mixing system
KR101373273B1 (ko) 통합된 차지 에어 및 ｅｇｒ 밸브
US20070256413A1 (en) Variable geometry EGR mixer and system
US6886544B1 (en) Exhaust gas venturi injector for an exhaust gas recirculation system
CN1262752C (zh) 有集成废气再循环阀的涡轮增压器
US7028463B2 (en) Engine valve assembly
US8261724B2 (en) Intake apparatus for internal combustion engine
US20040177839A1 (en) Modular exhaust gas recirculation assembly
US6439212B1 (en) Bypass venturi assembly and elbow with turning vane for an exhaust gas recirculation system
US20060124116A1 (en) Clean gas injector
JP2007515583A (ja) 排気圧制限装置
EP2133547A1 (de) Abgasrückführungssystem
US20030172913A1 (en) Intake system for an internal combustion engine
EP2998562B1 (de) Verbrennungsmotor mit lader
EP1996811B1 (de) Zweiteiliges agr-modul mit niedrigem druck
US9695779B2 (en) Exhaust gas mixing system
US6321536B1 (en) Pneumatically controlled exhaust throttle for delivering EGR on turbocharged engines
US20150122236A1 (en) Valves
EP1580421B1 (de) Vorrichtung zum Beimischen von rückgeführtem Abgas zur Ansaugluft eines Motors und Verfahren zur Abgasrückführung
GB2535995A (en) A geared valve system
EP2951423B1 (de) Agr-system, motor mit einem derartigen system und fahrzeug mit solch einem motor
US20200325857A1 (en) Exhaust Gas Management System
EP2959154B1 (de) Luftansaug- und abgasrückführsystem für dieselmotor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20100511

17Q First examination report despatched

Effective date: 20100610

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180103