EP1132609A2 - Echangeur de chaleur disposé dans un dispositif de recirculation de gaz d'échappement - Google Patents

Echangeur de chaleur disposé dans un dispositif de recirculation de gaz d'échappement Download PDF

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Publication number
EP1132609A2
EP1132609A2 EP01103422A EP01103422A EP1132609A2 EP 1132609 A2 EP1132609 A2 EP 1132609A2 EP 01103422 A EP01103422 A EP 01103422A EP 01103422 A EP01103422 A EP 01103422A EP 1132609 A2 EP1132609 A2 EP 1132609A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
heat exchanger
exhaust
gas heat
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.)
Granted
Application number
EP01103422A
Other languages
German (de)
English (en)
Other versions
EP1132609B1 (fr
EP1132609A3 (fr
Inventor
Thomas Jantscheck
Roland STRÄHLE
Wolfgang Knecht
Thomas Eckert
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.)
Modine Manufacturing Co
Original Assignee
Modine Manufacturing Co
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 Modine Manufacturing Co filed Critical Modine Manufacturing Co
Publication of EP1132609A2 publication Critical patent/EP1132609A2/fr
Publication of EP1132609A3 publication Critical patent/EP1132609A3/fr
Application granted granted Critical
Publication of EP1132609B1 publication Critical patent/EP1132609B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D9/0031—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 the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—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 the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
    • 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
    • F02M26/32—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
    • F02M26/02—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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves

Definitions

  • the invention relates to an exhaust gas heat exchanger in an exhaust gas recirculation arrangement for internal combustion engines with an exhaust manifold and an exhaust gas recirculation line and with an inlet and an Outflow channels and an exhaust valve having an actuator, for example on one side attached to the exhaust gas heat exchanger or forming a structural unit with the exhaust gas heat exchanger or only in close proximity to the exhaust gas heat exchanger, the exhaust valve one Part of the exhaust gas flow either through the exhaust gas heat exchanger into the exhaust gas recirculation line or leads directly into the exhaust gas recirculation line to the intake manifold of the internal combustion engine and the exhaust manifold Branches to the cylinder heads of the internal combustion engine and an outlet, for example to the exhaust gas turbocharger.
  • the object of the invention is to provide an inexpensive and space-saving arrangement of the Describe the exhaust gas heat exchanger for cooling the exhaust gas to be recycled, which in its Effectiveness is improved.
  • the exhaust gas heat exchanger has two connections Openings in the exhaust manifold is connected, between the one opening and the the exhaust valve is arranged on one side of the exhaust gas heat exchanger and the other side of the exhaust gas heat exchanger is connected to the other opening and at least one of the Openings in the backflow area of the exhaust gases before they exit, in the direction of flow of the exhaust gases seen, arranged.
  • the mentioned sides of the exhaust gas heat exchanger are preferably the opposite ends the same.
  • the exhaust valve equipped with a switching flap ensures that the valve is largely completely shut off the exhaust gas path through the heat exchanger so that the exhaust gases are not cooled, if that's not wanted.
  • the one opening with a connection to the inflow channel of the exhaust valve which is preferably the connection that is in the backflow area Exhaust gas is through which the uncooled exhaust gas to be recycled flows and that preferably the other opening in the exhaust manifold, which connects to the opposite Has side of the exhaust gas heat exchanger, is that through which to be cooled and returned Exhaust gas flows into the exhaust gas heat exchanger.
  • the opening mentioned can be in the manifold of the exhaust manifold e.g. B. to the turbocharger, the catalytic converter or another device that generates the back pressure are located. It should not be more than 1/2 of the total length of the exhaust manifold, preferably 1/3 of the total length, from the exit from it, because then the effect of the backlog is greatly reduced.
  • the exhaust gas heat exchanger is arranged so that it is only in the direction is flowable to the exhaust valve.
  • connection or assembly between the exhaust gas heat exchanger and exhaust valve which, however, in the Within the scope of this inventive teaching is not a mandatory requirement, the previously unpublished, from the applicant, patent application DE 198 41 927 The content of which is to be viewed in its entirety as well as disclosed here.
  • the exhaust valve is namely in close proximity to the Exhaust gas heat exchanger, however, is not directly connected to it, e.g. B. flanged to it.
  • the coolant of the internal combustion engine is preferably used as the coolant of the exhaust gas.
  • the internal structure of the exhaust gas heat exchanger is a so-called plate heat exchanger without a housing trained and corresponds to that from the previously unpublished German patent application DE 198 46 518.1, which also comes from the applicant and in its entirety as here disclosed should apply.
  • the internal structure is only preferred according to the above Patent application designed. It could also be a heat exchanger surrounded by a housing is.
  • Fig. 1 shows the arrangement of the exhaust gas heat exchanger based on a basic circuit diagram.
  • Fig. 2 shows a preferred variant of the arrangement of the exhaust gas heat exchanger on the exhaust manifold.
  • FIG. 3 shows a variant different from FIG. 2.
  • FIG. 4 is a side view similar to FIG. 2.
  • FIG. 5 is the top view of FIG. 4.
  • FIG. 6 is a side view of the exhaust gas heat exchanger without an exhaust valve.
  • FIG. 7 is the partial section AA from FIG. 6.
  • FIG. 8 is a view according to arrow B in FIG. 6.
  • the invention has been implemented in a diesel internal combustion engine 6.
  • the exhaust gas heat exchanger 1 is located on the exhaust manifold 2 of the row of cylinders.
  • the uncooled Exhaust gases flow to return via the return line 3 to the intake manifold S of the internal combustion engine 6 to get where they are mixed with the fresh air supplied by the exhaust gas turbocharger ATL and one repeated combustion in the cylinders of the internal combustion engine 6 are supplied.
  • the embodiment from Fig. 1 shows that the fresh air previously sent through the charge air cooler LLK to be cooled as needed.
  • connection 17 between the opposite Side of the exhaust gas heat exchanger 1 and the exhaust manifold 2 is in the area of the first Branch Z1 arranged. Through this connection 17 flows - in the corresponding position Switch flap 5 of the exhaust valve 4, the exhaust gas to be cooled in the exhaust gas heat exchanger 1 in order to the coolant of the internal combustion engine 6 is cooled and then via the return line 3 to be recycled as described.
  • Fig. 2 corresponds to the variant shown in Fig. 1, showing how the exhaust valve 4 is constructed is. It has an inflow channel 7 for uncooled exhaust gases flowing in via the connection 15.
  • the switching flap 5 is in a position in which the inflow channel 7 connected to the outflow channel 9 and the inflow channel 8 is closed.
  • the exhaust gas arrives into the return line 3 and back to the suction side S.
  • the inflow channels 7 and 8 are approximately open arranged in a line. They represent approximately the extension of the exhaust gas flow channels 26 within of the exhaust gas heat exchanger 1.
  • the outflow channel 9 is approximately perpendicular to the aforementioned ones Channels 7 and 8.
  • FIGS. 1 and 2 are preferred variants because of the effectiveness of the exhaust gas recirculation is improved without cooling.
  • the exhaust manifold (10) there is a bellows-like part 22, which serves to expand the material to compensate, because extremely high temperature fluctuations can be expected, which must be taken into account in the entire arrangement, in particular also in the execution of the exhaust valve 4.
  • the exhaust gas heat exchanger 1 only in the direction of Exhaust valve 4 flows through with the exhaust gas.
  • the total length L is in FIG Exhaust manifold 2 has been drawn.
  • the opening 14 in FIG. 3 or the opening 13 in FIG. 2 should preferably be no more than 1/3 of the total length L from the outlet 12 of the exhaust gases his. 2 and 3, both possible positions of the actuator 5 have been drawn.
  • the inflow channel 7 is closed, so that through the exhaust gas heat exchanger 1 flowing exhaust gas flow in through the inflow channel 8 and through the outflow channel 9 can get into the return line 3. 3, however, is the inflow channel 8 closed and the inflow channel 7 opened, so that the exhaust gas is accordingly cooled without to get into the return line 3.
  • the exhaust manifold 2 here also has five branches Z1 to Z5 arranged in series, which are each provided with a flange to the cylinder heads, not shown, of the internal combustion engine 6 to be connected. It consists of two deformed half shells that are in Longitudinal direction of the exhaust manifold 2 are connected, which is indicated by the thick line in Fig. 4 becomes. Furthermore, the exhaust manifold 2 also includes a manifold 23, the one Has outlet 12, which leads to the exhaust gas turbocharger ATL in the embodiment, which is more compact Construction of the internal combustion engine 6 is arranged directly at the outlet 12.
  • the exhaust gas heat exchanger 1 is very close to the exhaust manifold 2 and approximately parallel to it.
  • the connecting piece 11 leads to the opening 13, the is located in the manifold 23 and thus extremely close to the outlet 12 of the exhaust gases is arranged, whereby the backlog of exhaust gases that is formed is used effectively to keep uncooled
  • the return line 3 in this embodiment also has a flange 21 around a further line to fix.
  • the connecting piece 10 is with its flange 20 at the opening 14 between the first Z 1 and the second branch Z 2 to the cylinder heads, not shown, on one side attached.
  • the connecting piece 10 leads to the connection 17 of the exhaust gas heat exchanger 1.
  • the position of the opening 14 can, however, be chosen relatively freely. Another not The embodiment shown has the opening 14 approximately in the middle of the exhaust manifold 2 because a significantly smaller or shorter exhaust gas heat exchanger 2 can be used.
  • the exhaust gas heat exchanger 1 is on the exhaust manifold 2 by means of additional holders 18 and 19 been attached.
  • the exhaust gas heat exchanger 1 is a housing-free plate heat exchanger in which the exhaust gas with the Coolant liquid of the internal combustion engine 6 is cooled. As also shown in FIGS. 6, 7 and 8, has the exhaust gas heat exchanger 1 two connections 24 for the coolant. These can e.g. B. in projecting areas 28 over the edge of the heat exchanger plates 25. The heat exchanger plates 25 are deformed so that they can be stacked on or in one another and alternate flow channels 27 for the cooling liquid and 26 for the exhaust gas. 5, which can be viewed as a view from above on FIG. 4, additionally shows one on the exhaust valve 4 arranged actuator 30 which is connected to a shaft 31, which in turn the actuator 5, i.e. the switching flap, is actuated. The details of this belong to the state of the Technology and need not be described in detail here.
  • the heat exchanger plates 25 can be made of stainless steel. They become one by soldering compact and tightly sealed to the outside. In the channels 26 are relative smooth slats 29, which swirl the exhaust gases and thus improve heat exchange worry, but without causing problems with the deposition of residues of the exhaust gas, or to lead to the sooting of the channels 26.
  • the heat exchanger plates 25 have a bead which can be referred to as a circumferential shape 32 on. They lie on one another with their circumferential features 32 and thereby form the flow channels 27 for the coolant.
  • 7 is the path through the exhaust gas heat exchanger 1, which the coolant describes has been shown by arrows.
  • the exhaust gas flows in the direction of arrow B through the channels 26 onto the one not shown Exhaust valve 4 and on from there, as already described. Describes further details the aforementioned German patent application No. 198 46 518.1

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP01103422A 2000-03-11 2001-02-14 Echangeur de chaleur disposé dans un dispositif de recirculation de gaz d'échappement Expired - Lifetime EP1132609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10011954A DE10011954A1 (de) 2000-03-11 2000-03-11 Abgaswärmetauscher in einer Abgasrückführungsanordnung
DE10011954 2000-03-11

Publications (3)

Publication Number Publication Date
EP1132609A2 true EP1132609A2 (fr) 2001-09-12
EP1132609A3 EP1132609A3 (fr) 2002-03-20
EP1132609B1 EP1132609B1 (fr) 2006-09-27

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Family Applications (1)

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EP01103422A Expired - Lifetime EP1132609B1 (fr) 2000-03-11 2001-02-14 Echangeur de chaleur disposé dans un dispositif de recirculation de gaz d'échappement

Country Status (5)

Country Link
US (1) US6360532B2 (fr)
EP (1) EP1132609B1 (fr)
AT (1) ATE340924T1 (fr)
DE (2) DE10011954A1 (fr)
ES (1) ES2273753T3 (fr)

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ES2325348A1 (es) * 2007-04-13 2009-09-01 Valeo Termico, S.A. Intercambiador de calor para gases, y su correspondiente procedimiento de fabricacion.
EP2444615A1 (fr) * 2010-10-20 2012-04-25 Pierburg GmbH Dispositif de transport de gaz d'échappement pour un moteur à combustion interne
EP2562407A3 (fr) * 2011-08-03 2013-06-19 MAN Truck & Bus AG Dispositif de récirculation des gaz d'échappement d'un moteur à combustion interne d'un véhicule et procédé de fonctionnement d'un dispositif de récirculation de gaz d'échappement

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DE19841927A1 (de) 1998-09-14 2000-03-16 Wahler Gmbh & Co Gustav Einrichtung zur Rückführung eines Abgasstromes zum Saugrohr einer Brennkraftmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2325348A1 (es) * 2007-04-13 2009-09-01 Valeo Termico, S.A. Intercambiador de calor para gases, y su correspondiente procedimiento de fabricacion.
EP2444615A1 (fr) * 2010-10-20 2012-04-25 Pierburg GmbH Dispositif de transport de gaz d'échappement pour un moteur à combustion interne
EP2562407A3 (fr) * 2011-08-03 2013-06-19 MAN Truck & Bus AG Dispositif de récirculation des gaz d'échappement d'un moteur à combustion interne d'un véhicule et procédé de fonctionnement d'un dispositif de récirculation de gaz d'échappement

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EP1132609B1 (fr) 2006-09-27
DE50111065D1 (de) 2006-11-09
ES2273753T3 (es) 2007-05-16
DE10011954A1 (de) 2001-09-13
US6360532B2 (en) 2002-03-26
ATE340924T1 (de) 2006-10-15
US20010020363A1 (en) 2001-09-13
EP1132609A3 (fr) 2002-03-20

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