EP2444615A1 - Dispositif de transport de gaz d'échappement pour un moteur à combustion interne - Google Patents

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

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Publication number
EP2444615A1
EP2444615A1 EP11184340A EP11184340A EP2444615A1 EP 2444615 A1 EP2444615 A1 EP 2444615A1 EP 11184340 A EP11184340 A EP 11184340A EP 11184340 A EP11184340 A EP 11184340A EP 2444615 A1 EP2444615 A1 EP 2444615A1
Authority
EP
European Patent Office
Prior art keywords
exhaust
exhaust gas
housing
heat exchanger
manifold
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Withdrawn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
EP11184340A
Other languages
German (de)
English (en)
Inventor
Hans-Jürgen Hüsges
Hans-Ulrich Kühnel
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP2444615A1 publication Critical patent/EP2444615A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • 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 invention relates to an exhaust gas routing device for an internal combustion engine having an exhaust manifold with a housing in which at least one exhaust duct, a plurality of exhaust gas inlets, which are fluidically connected to exhaust passages of a cylinder head or a crankcase and at least one exhaust outlet are formed, an exhaust gas recirculation valve, which is arranged directly on the exhaust manifold is and at least one coolant channel formed in the housing of the exhaust manifold.
  • Exhaust manifold for receiving the exhaust gas from the combustion chambers of the internal combustion engine are usually made of high-temperature cast, such as gray cast iron, otherwise the maximum allowable thermal stress on the components would be exceeded.
  • the known exhaust manifolds usually have one, two or three exhaust gas outlets, depending on whether the internal combustion engine is designed with or without a turbocharger and whether an exhaust gas recirculation directly uses the exhaust manifold as a branch or the exhaust gas recirculation branch is arranged only behind the exhaust manifold.
  • an exhaust gas recirculation valve may be attached directly to the exhaust manifold housing.
  • an exhaust gas cooler is usually arranged in modern internal combustion engines in order to be able to reduce the pollutant emissions in a known manner.
  • the disadvantage is that the cooling effect to optimize pollutant emissions is often not high enough or too high an energy input into the coolant takes place, as this always cools the entire amount of exhaust gas regardless of the recirculated exhaust gas amount, which also leads to a lower efficiency of an optionally behind the exhaust manifold arranged turbocharger leads.
  • the response time of an oxidation catalyst is prolonged by the longer warm-up time of the engine in this case.
  • the coolant channel of the exhaust manifold forms a coolant jacket of the heat exchanger, so that no additional channels must be formed in the exhaust manifold.
  • the production is simplified.
  • the exhaust passage of the exhaust manifold arranged upstream of the exhaust gas recirculation valve and of the heat exchanger is at least partially surrounded by regions of the coolant jacket.
  • the exhaust manifold can be made of a light metal cast instead of being made of thermally resilient gray cast iron, without being thermally overloaded due to the hot exhaust gas.
  • the coolant channels of the at least one exhaust passage and the heat exchanger are arranged substantially parallel to each other and at least partially flows through in the opposite direction.
  • the first exhaust gas outlet leads to a turbocharger and is designed to be double-flowed, wherein the first flow is connected to a first exhaust gas channel, which is fluidically connected to a first cylinder group and the second flow is connected to a second exhaust gas channel which is fluidically connected to a second cylinder group is, wherein the first and the second exhaust passage are arranged parallel to each other and each having a connection to inlet chambers of the exhaust gas recirculation valve.
  • the housing of the exhaust manifold is a light metal casting, thereby reducing weight, resulting in a fuel economy advantage.
  • a coolant valve is provided on the exhaust manifold, via which the coolant flow can be switched off. During the cold start of the internal combustion engine can be interrupted by means of this coolant valve, the coolant flow for faster heating of the internal combustion engine, resulting in a reduction of the resulting emissions in the warm-up phase.
  • the exhaust gas routing device shown in the figures has an exhaust manifold 2 for a 6-cylinder engine, on which six exhaust gas inlets 4, 6 are formed, which can be attached via flange surfaces 8 to a cylinder head for fluid-carrying connection.
  • the exhaust gas inlets 4, 6 are divided into two groups on a housing 7 of the exhaust manifold 2, wherein the exhaust gas inlets 4 form the first group and open into a first exhaust passage 10 in the housing 7 of the exhaust manifold 2, which is parallel to a second exhaust passage 12 in the housing. 7 the exhaust manifold 2 is arranged, in which the second group of exhaust gas inlets 6 opens.
  • a first double-flow outlet 14 is formed, the first flow 16 is in flow communication with the first exhaust passage 10 and the second flow 18 is in flow communication with the second exhaust passage 12.
  • This outlet 14 has a flange surface 20, via which the exhaust manifold 2 can be connected either directly or via pipes to a turbine of a turbocharger.
  • the two exhaust gas channels 10, 12 each have a passage 22, 24 in two inlet chambers 26 of a channel housing 28 of an exhaust gas recirculation valve 30, of which an inlet chamber 26 in the FIG. 2 can be seen, and which is attached to the housing 7 of the exhaust manifold 2.
  • the exhaust gas recirculation valve 30 is formed in the present embodiment as a flap valve, on the shaft 32nd arranged two flap body 36, which each have an outlet of the inlet chambers 26 dominate.
  • the shaft 32 is mounted in the channel housing 28 and protrudes for actuation by the channel housing 28 in an actuator 34 of the exhaust gas recirculation valve 30.
  • Each valve body 36 is one of the position of the actuator 34 and the shaft 32, on which the valve body 36 are attached depending Flow cross-section in the channel housing 28 free.
  • the exhaust gas is deflected by 180 ° and flows back into the housing 7 of the exhaust manifold 2, which extends parallel to the two exhaust channels 10, 12.
  • a heat exchanger housing 38 is arranged, which has ribs 40 which extend into the interior of the heat exchanger housing 38 to improve the heat transfer.
  • the heat exchanger housing 38 is surrounded by coolant flowing between the heat exchanger housing 38 and the housing 7 of the exhaust manifold 2, so that this part of the housing 7 with the heat exchanger housing 38 forms a heat exchanger 42, the inner, exhaust gas flowed through channels of an outer coolant jacket 44 through the heat exchanger housing 38 is disconnected.
  • One of these exhaust gas flowed through channels is in fluid communication with the first exhaust passage 10 via the first inlet chamber 26, while the other is in fluid communication with the second exhaust passage 12 via the second chamber, not shown.
  • the coolant jacket 44 extends in the present embodiment, as in particular in FIG. 3 can be seen, even in areas 46 above and below the first and second exhaust passage 10, 12, so that they are also cooled by the coolant. This allows the formation of the exhaust manifold 2, for example made of light metal casting.
  • the coolant jacket 44 extends via a connection opening 47 into a coolant channel 48 arranged in the outer region of the housing 7 and from here into a coolant section 50 arranged in the channel housing 28 of the exhaust gas recirculation valve 30, whereby the channel housing 28 is likewise protected against overheating.
  • connection housing 54 of an aftercooler 56 is attached to the housing 7 of the exhaust manifold 2, whose inner housing 58 is connected to the heat exchanger housing 38.
  • the coolant jacket 44 of the heat exchanger 42 extends into the connection housing 54, so that the inner housing 58 is also surrounded by coolant.
  • a tube housing 60 Arranged on the connection housing 54 of the aftercooler 56 is a tube housing 60, which has a second exhaust gas outlet 62, which is connected to the intake manifold of the internal combustion engine for the recirculation of the exhaust gas.
  • an exhaust gas mass flow sensor 64 for determining the recirculated exhaust gas flow is arranged on this tube housing 60.
  • 60 check valves are arranged within the tube housing. Only behind the check valves, the separation of the two exhaust channels 10, 12, which continues through the exhaust gas recirculation valve 30 and the heat exchanger 42 to the check valves, repealed. Thus, pulsations in the exhaust system can be used to increase the exhaust gas recirculation rate.
  • exhaust gas flow in appropriate proportions on the exhaust ducts 10, 12 to the exhaust outlet 14 and from here to the turbocharger or via the exhaust gas recirculation valve 30 and the heat exchanger 42 to the second exhaust gas outlet 62 and from here to the intake manifold.
  • the described embodiment is easy to assemble as a unit and allows a space-reducing arrangement of the heat exchanger in the housing of the exhaust manifold, thereby eliminating lines.
  • the flow through the exhaust manifold with the coolant leads both to an effective cooling of the exhaust manifold itself to make this from sheet metal or light metal and with the arrangement of the heat exchanger in the housing of the exhaust manifold to a high radiator efficiency in the exhaust gas recirculation.

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)
EP11184340A 2010-10-20 2011-10-07 Dispositif de transport de gaz d'échappement pour un moteur à combustion interne Withdrawn EP2444615A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010048793A DE102010048793B3 (de) 2010-10-20 2010-10-20 Abgasführungsvorrichtung für eine Verbrennungskraftmaschine

Publications (1)

Publication Number Publication Date
EP2444615A1 true EP2444615A1 (fr) 2012-04-25

Family

ID=44772889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11184340A Withdrawn EP2444615A1 (fr) 2010-10-20 2011-10-07 Dispositif de transport de gaz d'échappement pour un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP2444615A1 (fr)
CN (1) CN202300718U (fr)
DE (1) DE102010048793B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3845755A1 (fr) * 2019-12-31 2021-07-07 Kubota Corporation Collecteur d'échappement de moteur
US11486337B2 (en) * 2019-09-06 2022-11-01 Deere & Company Integrated exhaust system apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012111928A1 (de) * 2012-12-07 2014-06-12 Pierburg Gmbh Wärmetauscher für eine Verbrennungskraftmaschine
US9828894B2 (en) 2013-11-13 2017-11-28 Deere & Company Exhaust manifold comprising an EGR passage and a coolant passage
CN112377291B (zh) * 2020-12-01 2023-11-10 广西玉柴船电动力有限公司 一种内置固定螺栓的水冷排气管及其安装方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132609A2 (fr) * 2000-03-11 2001-09-12 Modine Manufacturing Company Echangeur de chaleur disposé dans un dispositif de recirculation de gaz d'échappement
EP1170497A2 (fr) * 2000-07-03 2002-01-09 Honda Giken Kogyo Kabushiki Kaisha Système de recirculation de gaz d'échappement
US20050247294A1 (en) * 2004-05-06 2005-11-10 Rowells Robert L Connection system for exhaust gas recirculation (egr)
DE102007053126A1 (de) 2007-11-08 2009-05-20 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine mit gekühlter Abgasrückführung sowie Abgaskrümmer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132609A2 (fr) * 2000-03-11 2001-09-12 Modine Manufacturing Company Echangeur de chaleur disposé dans un dispositif de recirculation de gaz d'échappement
EP1170497A2 (fr) * 2000-07-03 2002-01-09 Honda Giken Kogyo Kabushiki Kaisha Système de recirculation de gaz d'échappement
US20050247294A1 (en) * 2004-05-06 2005-11-10 Rowells Robert L Connection system for exhaust gas recirculation (egr)
DE102007053126A1 (de) 2007-11-08 2009-05-20 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine mit gekühlter Abgasrückführung sowie Abgaskrümmer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11486337B2 (en) * 2019-09-06 2022-11-01 Deere & Company Integrated exhaust system apparatus
EP3845755A1 (fr) * 2019-12-31 2021-07-07 Kubota Corporation Collecteur d'échappement de moteur
US11306687B2 (en) 2019-12-31 2022-04-19 Kubota Corporation Engine exhaust manifold

Also Published As

Publication number Publication date
DE102010048793B3 (de) 2011-11-17
CN202300718U (zh) 2012-07-04

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