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EP0930429A2 - Method and device for cooling recirculated exhaust gas of a liquid cooled engine - Google Patents

Method and device for cooling recirculated exhaust gas of a liquid cooled engine Download PDF

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Publication number
EP0930429A2
EP0930429A2 EP98124173A EP98124173A EP0930429A2 EP 0930429 A2 EP0930429 A2 EP 0930429A2 EP 98124173 A EP98124173 A EP 98124173A EP 98124173 A EP98124173 A EP 98124173A EP 0930429 A2 EP0930429 A2 EP 0930429A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
cooling
coolant
channel
internal combustion
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
EP98124173A
Other languages
German (de)
French (fr)
Other versions
EP0930429A3 (en
EP0930429B1 (en
Inventor
Bernd Jelinek
Heinz Povolny
Johannes Hollweck
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.)
MAN Truck and Bus Osterreich AG
Original Assignee
MAN Steyr AG
Steyr Nutzfahrzeuge AG
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 MAN Steyr AG, Steyr Nutzfahrzeuge AG filed Critical MAN Steyr AG
Priority to AT98124173T priority Critical patent/ATE244821T1/en
Publication of EP0930429A2 publication Critical patent/EP0930429A2/en
Publication of EP0930429A3 publication Critical patent/EP0930429A3/en
Application granted granted Critical
Publication of EP0930429B1 publication Critical patent/EP0930429B1/en
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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • 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
    • F02M26/22—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
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • 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
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases

Definitions

  • the invention relates to a device and According to the preamble of claim 2, a method for cooling returned Exhaust gas from a liquid-cooled internal combustion engine with exhaust gas recirculation device.
  • a device solved, namely by a cooling insert in a liquid-carrying Channel of the internal combustion engine and a corresponding design of the channel component in the area of the cooling insert for cooling the Recirculated exhaust gas flowing through the cooling insert through the exhaust gas flowing through the channel Coolant.
  • the stated object is achieved on the other hand by a method according to Claim 2 solved, such that the recirculated exhaust gas before it is reintroduced in the combustion process of the internal combustion engine by one in one coolant-carrying channel arranged cooling insert passed and thereby through the coolant of the internal combustion engine flowing through the channel is cooled.
  • the invention is therefore based on the idea of cooling the recirculated Exhaust gas already present on or in or in the vicinity of the internal combustion engine to use the coolant-carrying component and this for the Purpose of cooling the recirculated exhaust gas only accordingly and equip.
  • Coolant channel for the installation or attachment of a cooling insert and, if necessary, change this purpose accordingly or redesign.
  • the coolant-carrying duct with the cooling insert can also be used outside arranged of the internal combustion engine and on or in a coolant line or a section thereof can be realized, for example in Area of the cylinder head next to this or in the area between a coolant pump and the crankcase or in the area between the coolant pump and a cooler upstream of the internal combustion engine or in the area between Internal combustion engine and a retarder operated with the coolant.
  • the channel with the cooling insert can also be placed in or on one redesigned component of the coolant circuit of the internal combustion engine, such as a coolant pump, Thermostat, switching valve, expansion tank and the like, or a retarder or a structural one with one of these components Form unity.
  • the cooling insert can consist of a bundle with several of recirculated exhaust gases flowable cooler pipes exist, which cooler pipes one end Exhaust gas supply device and other connected to an exhaust gas discharge device and also liquid-tight at each end by a plate or wall are passed through the coolant channel in the area of Seals cooling insert to the exhaust gas supply device and exhaust gas discharge device.
  • the cooling insert can, however, also consist of a single one its z.
  • This cooling pipe is one end of an exhaust gas supply device and another end connected to an exhaust gas discharge device and also at the end each liquid-tight through a plate or wall, which the coolant-carrying channel in the area of the cooling insert to the exhaust gas supply device and seals exhaust gas outlet.
  • the cooling tube or each of the Cooling tubes formed by a section of section tube, its length, cross-sectional size and shape and their number to be removed from the recirculated exhaust gas Amount of heat is turned off.
  • the device according to the invention is that the channel with the cooling insert in a cast coolant return pipe is realized, which is next to the side extending to the cylinder head or the cylinder heads of the internal combustion engine this or these is flanged, the coolant in the channel via on Coolant return pipe with molded inlet elbow from inside the cylinder head Cooling liquid spaces and drainage channels are fed in and then via one or several outlet nozzles out of the channel after it has flowed through it sent to a subordinate body such as a thermostat and / or retarder becomes.
  • a subordinate body such as a thermostat and / or retarder becomes.
  • the cooling insert is designed like a cartridge, what a complete prefabrication of the same and a comparatively simple and quick installation in those also prepared accordingly for this installation allows coolant-carrying channel.
  • a section 1 of a line is shown, which at any point of the Coolant circuit of a liquid-cooled internal combustion engine, such as a diesel engine, or the coolant circuit of one with coolant as the working fluid operated retarder can be arranged.
  • This line section 1 will Coolant is supplied according to arrow 2 via a connecting piece 3.
  • the coolant according to arrow 4 is a further connection piece on line section 1 5 available.
  • This line section 1 limits as part of the invention Device has a coolant channel 6 and is designed that at least one cooling insert 7 is installed or added can.
  • Such a cooling insert either consists of a single cooling tube 8, 9 (see Fig. 5 or 8) or a bundle of several cooling tubes 10 (see Fig.
  • the one or the one ends through a plate or wall 11 liquid-tight passed through and connected to an exhaust gas supply device 12 or are.
  • the other end is the cooling pipe 8, 9 or the cooling pipes 10 are through a plate or wall 13 passed liquid-tight and to an exhaust gas discharge device 14 connected.
  • the line section 1 in its front end wall 15 and rear end wall 16 two openings each or breakthroughs 17, 18, wherein the axes of the opposite one another Openings or openings are aligned with each other. This makes it possible that each a prefabricated cooling insert 7 in the manner of a cartridge through the Opening 17 and the channel and with the plate 13 in the opposite aligned opening 18 is immersed in a liquid-tight manner.
  • a shut-off or throttle valve 25 can be installed, and is supplied via an exhaust pipe 26 to an organ with which combustion air / charge air and recirculated, cooled exhaust gas back to the internal combustion engine is feedable.
  • On the cooling insert 7 - so far for an optimization of the coolant flow necessary within channel 6 - one or more baffles 27 be provided, which are attached to the cooling pipe 8, 9 or the cooling pipes 10 or arranged and are so large in their configuration that they can be installed and removed the cooling insert cartridge 7 in the line section 1 does not hinder.
  • FIGS 2 and 3 show the line section 1 formed by a cast Coolant return pipe 28. Because this is structurally identical parts with those parts of the solution according to Figure 1, the corresponding in Figures 2 and 3 Parts with the same reference numerals but with a prime are used.
  • the coolant return pipe 28 extends laterally next to a cylinder head or cylinder heads 29 of the internal combustion engine, also not shown and is flanged to this or these in a liquid-tight manner and in this Mounting position held by screws 30.
  • the coolant return pipe 28 in contrast to the solution according to FIG. 1, is only one Cooling insert 7 'installed like a cartridge, so that in the end wall 15' only one opening or opening 17 'for the installation and removal of the cooling insert cartridge 7 'is given.
  • the cooling insert 7 or 7 ' can either be only one have specially designed cooling pipe 8 or 9 or a bundle of cooling pipes 10, 10 ', that or each of them is formed by a profile tube section.
  • the length, cross-sectional shape and size as well as the number of cooling tubes is fundamental to the from the recirculated exhaust gas as it flows through the Cooling insert 7 or 7 'turned off via the amount of heat to be dissipated.
  • Figure 4 shows a bundle of nine cooling tubes 10, 10 'with an annular Cross-section.
  • Figure 6 shows a bundle of four cooling tubes 10, 10 'with a rectangular Cross section and also different cross section sizes.
  • Figure 7 shows a Bundle of four round cooling tubes 10, 10 'with an annular cross section.
  • FIG. 8 shows a single cooling tube 9 with an essentially star-shaped cross section and FIG. 5 shows a single cooling tube 8 with a round central tube and a star shape on the outside protruding cooling fins. It should be noted that Figures 4 to 8 are only examples should show for possible cooling pipe designs within a Cooling insert 7, 7 '.
  • the method according to the invention for cooling the recirculated exhaust gas arises with a device of the type according to the invention as follows Exhaust gas is released before it is reintroduced into the combustion process of the internal combustion engine according to arrow 32 via the exhaust gas supply device 12, 12 'in the coolant-carrying Channel 6 given cooling insert 7, 7 'and fed through whose cooling tube 8, 9 or cooler tubes 10, 10 'passed and thereby through the the cooling liquid flowing through the channel 6 and rinsing the cooling pipe or the cooling pipes chilled. Then the so cooled, recirculated Exhaust gas after discharge from the cooling insert 7, 7 'passed on for corresponding Recycling in the internal combustion engine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

To cool returned exhaust gas, in a water-cooled internal combustion motor, a cooling unit (7) is in the coolant circuit channel (6) of the motor. It has a shape structure so that the section (1) which defines the coolant circuit channel (6) at the unit (7) ensures that the coolant in the channel (6) also cools the unit (7) where the returning exhaust gas flows through, before it is returned to the fuel combustion stage of the motor.

Description

Die Erfindung betrifft gemäß dem Oberbegriff des Anspruchs 1 eine Vorrichtung und gemäß dem Oberbegriff des Anspruchs 2 ein Verfahren zur Kühlung rückgeführten Abgases einer flüssigkeitsgekühlten Brennkraftmaschine mit Abgasrückführeinrichtung.According to the preamble of claim 1, the invention relates to a device and According to the preamble of claim 2, a method for cooling returned Exhaust gas from a liquid-cooled internal combustion engine with exhaust gas recirculation device.

Es ist bekannt, daß durch Abgasrückführung eine Reduzierung der NOx-Werte im Abgas von Brennkraftmaschinen sowie eine Reduzierung des Kraftstoffverbrauches erzielbar ist. Dieses positive Ergebnis wird in zunehmenden Maß auch mit Dieselmotoren angestrebt, die in Lastkraftwagen und Omnibussen eingebaut sind. Es stellt sich bei solchen Fahrzeugen aber das Problem der Unterbringung des für die Kühlung des rückgeführten Abgases notwendigen Kühlers. Herkömmliche Kühler, die für einen solchen Zweck in Frage kommen, sind in der Regel zu groß oder nur unter Abstrichen für den Platzbedarf anderer Aggregate in dem Fahrzeug unterzubringen.It is known that a reduction in the NO x values in the exhaust gas from internal combustion engines and a reduction in fuel consumption can be achieved by exhaust gas recirculation. This positive result is increasingly being striven for with diesel engines installed in trucks and buses. In such vehicles, however, there is the problem of accommodating the cooler necessary for cooling the recirculated exhaust gas. Conventional coolers that come into question for such a purpose are usually too large or can only be accommodated in the vehicle to a limited extent for the space required by other units.

Es ist daher Aufgabe der Erfindung, eine Vorrichtung und ein Verfahren zu schaffen, die bzw. das zur Kühlung rückgeführten Abgases im Bereich der Brennkraftmaschine extrem wenig Bauraum beansprucht und trotzdem eine hinreichende Kühlleistung sicherstellt.It is therefore an object of the invention to provide an apparatus and a method the or the exhaust gas returned for cooling in the area of the internal combustion engine takes up very little space and still has sufficient cooling capacity ensures.

Diese Aufgabe ist erfindungsgemäß einerseits durch eine Vorrichtung gemaß Anspruch 1 gelost, nämlich durch einen Kühleinsatz in einem flüssigkeitsführenden Kanal der Brennkraftmaschine und eine entsprechende Gestaltung des den Kanal im Bereich des Kühleinsatzes begrenzenden Bauteils für eine Kühlung des den Kühleinsatz durchströmenden rückgeführten Abgases durch die den Kanal durchströmende Kühlflüssigkeit.This object is claimed on the one hand by a device according to claim 1 solved, namely by a cooling insert in a liquid-carrying Channel of the internal combustion engine and a corresponding design of the channel component in the area of the cooling insert for cooling the Recirculated exhaust gas flowing through the cooling insert through the exhaust gas flowing through the channel Coolant.

Die genannte Aufgabe ist erfindungsgemäß andererseits durch ein Verfahren gemäß Anspruch 2 gelöst, dergestalt, daß das rückgeführte Abgas vor seiner Wiedereinleitung in den Verbrennungsprozeß der Brennkraftmaschine durch einen in einem kühlflüssigkeitsführenden Kanal angeordneten Kühleinsatz hindurchgeleitet und dabei durch die den Kanal durchströmende Kühlflüssigkeit der Brennkraftmaschine gekühlt wird. According to the invention, the stated object is achieved on the other hand by a method according to Claim 2 solved, such that the recirculated exhaust gas before it is reintroduced in the combustion process of the internal combustion engine by one in one coolant-carrying channel arranged cooling insert passed and thereby through the coolant of the internal combustion engine flowing through the channel is cooled.

Der Erfindung liegt demzufolge der Gedanke zugrunde, zur Kühlung des rückgeführten Abgases ein ohnehin an bzw. in oder im Umfeld der Brennkraftmaschine vorhandenes, kühlflüssigkeitsführendes Bauteil heranzuziehen und dieses für den Zweck der Kühlung von rückgeführtem Abgas lediglich entsprechend umzugestalten und auszustatten.The invention is therefore based on the idea of cooling the recirculated Exhaust gas already present on or in or in the vicinity of the internal combustion engine to use the coolant-carrying component and this for the Purpose of cooling the recirculated exhaust gas only accordingly and equip.

Es ist zwar aus der DE-AS 28 02 095 bekannt, außen am Zylinderkopf einer Brennkraftmaschine eine Abgasrückführleitung anzuflanschen, die von einem kühlwasserführenden Mantel umgeben ist. Diese Lösung gehorcht demzufolge dem allgemein bekannten Prinzip einer wassergekühlten Abgasleitung und kann somit auf die erfindungsgemäße Lösung keinen Hinweis geben.It is known from DE-AS 28 02 095, on the outside of the cylinder head of an internal combustion engine flanged an exhaust gas recirculation line from a coolant pipe Coat is surrounded. This solution therefore obeys this in general known principle of a water-cooled exhaust pipe and can thus be based on the invention Solution give no clue.

Vorteilhafte Ausgestaltungen, Weiterbildungen oder Details der erfindungsgemäßen Vorrichtung sind in den abhängigen Unteransprüchen angegeben.Advantageous refinements, developments or details of the invention Devices are specified in the dependent subclaims.

So ist es beispielsweise möglich, einen innerhalb der Brennkraftmaschine, dort beispielsweise im Bereich des Kurbelgehäuses oder des Zylinderkopfes vorhandenen kühlflüssigkeitsführenden Kanal für den Einbau oder die Anbringung eines Kühleinsatzes heranzuziehen und ihn, falls erforderlich, diesen Zweck entsprechend um- oder neuzugestalten.For example, it is possible to place one inside the internal combustion engine, for example there existing in the area of the crankcase or the cylinder head Coolant channel for the installation or attachment of a cooling insert and, if necessary, change this purpose accordingly or redesign.

Alternativ hierzu kann der kühlmittelführende Kanal mit dem Kühleinsatz auch außerhalb der Brennkraftmaschine angeordnet und an bzw. in einer Kühlflüssigkeitsleitung oder einem Abschnitt derselben realisiert sein, die bzw. der beispielsweise im Bereiches des Zylinderkopfes neben diesem oder im Bereich zwischen einer Kühlmittelpumpe und dem Kurbelgehäuse oder im Bereich zwischen Kühlmittelpumpe und einem der Brennkraftmaschine vorgeordnetem Kühler oder im Bereich zwischen Brennkraftmaschine und einem mit der Kühlflüssigkeit betriebenen Retarder verläuft. Außerdem kann der Kanal mit dem Kühleinsatz auch in bzw. an einem entsprechend umgestalteten Bauteil des Kühlmittelkreislaufes der Brennkraftmaschine, wie Kühlmittelpumpe, Thermostat, Umschaltventil, Ausgleichsbehälter und dergleichen, oder einem Retarder realisiert sein oder mit einem dieser genannten Bauteile eine bauliche Einheit bilden.Alternatively, the coolant-carrying duct with the cooling insert can also be used outside arranged of the internal combustion engine and on or in a coolant line or a section thereof can be realized, for example in Area of the cylinder head next to this or in the area between a coolant pump and the crankcase or in the area between the coolant pump and a cooler upstream of the internal combustion engine or in the area between Internal combustion engine and a retarder operated with the coolant. In addition, the channel with the cooling insert can also be placed in or on one redesigned component of the coolant circuit of the internal combustion engine, such as a coolant pump, Thermostat, switching valve, expansion tank and the like, or a retarder or a structural one with one of these components Form unity.

Was die Ausgestaltung und Anordnung bzw. Unterbringung des Kühleinsatzes anbelangt, so gibt es auch hierfür die verschiedensten Möglichkeiten. Beispielsweise kann der Kühleinsatz aus einem Bündel mit mehreren von rückgeführtem Abgas durchströmbaren Kühlerrohren bestehen, welche Kühlerrohre einenendes an eine Abgaszuführeinrichtung und andernendes an eine Abgasableiteinrichtung angeschlossen und außerdem endseitig jeweils durch eine Platte oder Wand flüssigkeitsdicht hindurchgeführt sind, die den kühlmittelführenden Kanal im Bereich des Kühleinsatzes zur Abgaszuführeinrichtung und Abgasableiteinrichtung hin abdichtet.With regard to the design and arrangement or accommodation of the cooling insert, So there are various possibilities for this. For example The cooling insert can consist of a bundle with several of recirculated exhaust gases flowable cooler pipes exist, which cooler pipes one end Exhaust gas supply device and other connected to an exhaust gas discharge device and also liquid-tight at each end by a plate or wall are passed through the coolant channel in the area of Seals cooling insert to the exhaust gas supply device and exhaust gas discharge device.

Alternativ hierzu kann der Kühleinsatz aber auch aus einem einzigen, hinsichtlich seines z. B. sternförmigen Querschnittes oder seiner Ausgestaltung mit inneren und/ oder äußeren Kühlrippen auf eine hohe Kühlleistung ausgelegten Kühlrohr bestehen. Dieses Kühlrohr ist einenendes an eine Abgaszuführeinrichtung und andernendes an eine Abgasableiteinrichtung angeschlossen und außerdem endseitig jeweils durch eine Platte oder Wand flüssigkeitsdicht hindurchgeführt, die den kühlmittelführenden Kanal im Bereich des Kühleinsatzes zur Abgaszuführeinrichtung und Abgasableiteinrichtung hin abdichtet. Generell ist das Kühlrohr bzw. jedes der Kühlrohre durch einen Profilrohr-Abschnitt gebildet, dessen Länge, Querschnittsgröße und -form sowie deren Anzahl auf die aus dem rückgeführten Abgas abzuführende Wärmemenge abgestellt sind.As an alternative to this, the cooling insert can, however, also consist of a single one its z. B. star-shaped cross section or its design with inner and / or outer cooling fins designed for a high cooling capacity cooling tube consist. This cooling pipe is one end of an exhaust gas supply device and another end connected to an exhaust gas discharge device and also at the end each liquid-tight through a plate or wall, which the coolant-carrying channel in the area of the cooling insert to the exhaust gas supply device and seals exhaust gas outlet. Generally, the cooling tube or each of the Cooling tubes formed by a section of section tube, its length, cross-sectional size and shape and their number to be removed from the recirculated exhaust gas Amount of heat is turned off.

Eine sehr günstig an einer Brennkraftmaschine realisierbare Ausführungsform der erfindungsgemäßen Vorrichtung besteht darin, daß der Kanal mit dem Kühleinsatz in einem gegossenen Kühlflüssigkeitsrücklaufrohr realisiert ist, das sich seitlich neben dem Zylinderkopf bzw. den Zylinderköpfen der Brennkraftmaschine erstreckend an diesem bzw. diesen angeflanscht ist, wobei die Kühlflüssigkeit in den Kanal über am Kühlflüssigkeitsrücklaufrohr mit angegossene Zulaufkrümmer von zylinderkopfinternen Kühlflüssigkeitsräumen und Ablaßkanälen her eingespeist und dann über einen oder mehrere Ablaßstutzen aus dem Kanal nach dessen Durchströmung wieder ausund einem nachgeordneten Organ wie Thermostat und/oder Retarder zugeleitet wird.An embodiment of the which can be realized very cheaply on an internal combustion engine The device according to the invention is that the channel with the cooling insert in a cast coolant return pipe is realized, which is next to the side extending to the cylinder head or the cylinder heads of the internal combustion engine this or these is flanged, the coolant in the channel via on Coolant return pipe with molded inlet elbow from inside the cylinder head Cooling liquid spaces and drainage channels are fed in and then via one or several outlet nozzles out of the channel after it has flowed through it sent to a subordinate body such as a thermostat and / or retarder becomes.

In besonders vorteilhafter Weise ist der Kühleinsatz nach Art einer Kartusche gestaltet, was eine komplette Vorfertigung desselben und einen vergleichsweise einfachen und schnellen Einbau in den ebenfalls entsprechend für diesen Einbau vorbereiteten kühlmittelführenden Kanal ermöglicht.In a particularly advantageous manner, the cooling insert is designed like a cartridge, what a complete prefabrication of the same and a comparatively simple and quick installation in those also prepared accordingly for this installation allows coolant-carrying channel.

Nachstehend ist die Erfindung anhand verschiedener in der Zeichnung dargestellter Ausführungsbeispiele noch näher erläutert. In der Zeichnung zeigen:

Fig. 1
einen Längsschnitt durch eine erste Ausführungsform der erfindungsgemäßen Vorrichtung,
Fig. 2
eine zweite Ausführungsform der erfindungsgemäßen Vorrichtung im Querschnitt,
Fig. 3
einen Längsschnitt durch die Ausführungsform gemäß Figur 2, und
Fig. 4-8
schematisch je einen Schnitt durch einen Kühleinsatz gemäß der Erfindung.
The invention is explained in more detail below with reference to various exemplary embodiments shown in the drawing. The drawing shows:
Fig. 1
2 shows a longitudinal section through a first embodiment of the device according to the invention,
Fig. 2
a second embodiment of the device according to the invention in cross section,
Fig. 3
a longitudinal section through the embodiment of Figure 2, and
Fig. 4-8
schematically each a section through a cooling insert according to the invention.

In Figur 1 ist ein Abschnitt 1 einer Leitung dargestellt, der an beliebiger Stelle des Kühlmittelkreislaufes einer flüssigkeitsgekühlten Brennkraftmaschine, wie Dieselmotor, oder des Kühlflüssigkeitskreislaufes eines mit Kühlflüssigkeit als Arbeitsmittel betriebenen Retarders angeordnet sein kann. Diesem Leitungsabschnitt 1 wird Kühlflüssigkeit gemäß Pfeil 2 über einen Anschlußstutzen 3 zugeführt. Zur Abführung der Kühlflüssigkeit gemäß Pfeil 4 ist am Leitungsabschnitt 1 ein weiterer Anschlußstutzen 5 vorhanden. Dieser Leitungsabschnitt 1 begrenzt als Teil der erfindungsgemäßen Vorrichtung einen kühlflüssigkeitsführenden Kanal 6 und ist so gestaltet, daß wenigstens ein Kühleinsatz 7 eingebaut oder aufgenommen werden kann. Ein solcher Kühleinsatz besteht entweder aus einem einzigen Kühlrohr 8, 9 (siehe Fig. 5 oder 8) oder einem Bündel von mehreren Kühlrohren 10 (siehe Fig. 1, 2, 3 und 4, 6, 7), das bzw. die einenendes durch eine Platte oder Wand 11 flüssigkeitsdicht hindurchgeführt und an eine Abgaszuführeinrichtung 12 angeschlossen ist bzw. sind. Andernendes ist das Kühlrohr 8, 9 bzw. sind die Kühlerrohre 10 durch eine Platte oder Wand 13 flüssigkeitsdicht hindurchgeführt und an eine Abgasableiteinrichtung 14 angeschlossen. Wie aus Figur 1 ersichtlich, weist der Leitungsabschnitt 1 in seiner vorderen Stirnwand 15 und hinteren Stirnwand 16 je zwei Öffnungen bzw. Durchbrüche 17, 18 auf, wobei die Achsen der einander gegenüberliegenden Öffnungen bzw. Durchbrüche jeweils zueinander fluchten. Hierdurch ist es möglich, daß jeweils ein vorgefertigter Kühleinsatz 7 nach Art einer Kartusche durch die Öffnung 17 und den Kanal hindurch und mit der Platte 13 in die gegenüberliegende fluchtende Öffnung 18 flüssigkeitsdicht eintauchend einbaubar ist. Dabei wird die in dieser Ausführungsform durch den Boden der Abgaszuführeinrichtung 12 gebildete Platte 11 an der vorderen Stirnwand 15 flüssigkeitsdicht zur Anlage gebracht und bleibt dort durch in der Zeichnung nicht dargestellte Schrauben gehalten. In Figur 1 sind als weitere Teile der nicht vollständig dargestellten Abgasrückführeinrichtung der Brennkraftmaschine zwei Abgasrückführleitungen 19, 20 gezeigt, von denen jede an einer Abgaszuführeinrichtung 12 angeschlossen ist. Diese weist intern einen Einlaßkanal 21 und anschließend einen Abgassammelraum 22 auf, von dem aus das rückgeführte Abgas in das bzw. die Kühlrohre 8 bzw. 9 bzw. 10 eingespeist wird. Nach Durchströmung des Kühleinsatzes 7 und entsprechender Abkühlung durch die den Kanal 6 durchströmende Kühlflüssigkeit tritt das rückgeführte Abgas am gegenüberliegenden Ende, im Beispiel gemäß Figur 1 gesteuert durch je ein einem Kühleinsatz 7 nachgeordnetes, in die Abgasableiteinrichtung 14 eingebautes Flatterventil 23 aus dem Kühlrohr 8, 9 bzw. den Kühlrohren 10 aus und in einen Abführkanal 24, in dem auch ein Absperr- bzw. Drosselventil 25 eingebaut sein kann, ein und wird über eine Abgasleitung 26 einem Organ zugeführt, mit dem Verbrennungsluft/Ladeluft und rückgeführtes, gekühltes Abgas wieder der Brennkraftmaschine zuführbar ist. Am Kühleinsatz 7 können - soweit für eine Optimierung der Kühlflüssigkeitströmung innerhalb des Kanal 6 notwendig - ein oder mehrere Leitbleche 27 vorgesehen sein, die auf dem Kühlrohr 8, 9 bzw. den Kühlerrohren 10 befestigt bzw. angeordnet und in ihrer Projektierung nur so groß sind, daß sie einen Ein- und Ausbau der Kühleinsatz-Kartusche 7 in den Leitungsabschnitt 1 nicht behindern.In Figure 1, a section 1 of a line is shown, which at any point of the Coolant circuit of a liquid-cooled internal combustion engine, such as a diesel engine, or the coolant circuit of one with coolant as the working fluid operated retarder can be arranged. This line section 1 will Coolant is supplied according to arrow 2 via a connecting piece 3. For removal The coolant according to arrow 4 is a further connection piece on line section 1 5 available. This line section 1 limits as part of the invention Device has a coolant channel 6 and is designed that at least one cooling insert 7 is installed or added can. Such a cooling insert either consists of a single cooling tube 8, 9 (see Fig. 5 or 8) or a bundle of several cooling tubes 10 (see Fig. 1, 2, 3 and 4, 6, 7), the one or the one ends through a plate or wall 11 liquid-tight passed through and connected to an exhaust gas supply device 12 or are. The other end is the cooling pipe 8, 9 or the cooling pipes 10 are through a plate or wall 13 passed liquid-tight and to an exhaust gas discharge device 14 connected. As can be seen from Figure 1, the line section 1 in its front end wall 15 and rear end wall 16 two openings each or breakthroughs 17, 18, wherein the axes of the opposite one another Openings or openings are aligned with each other. This makes it possible that each a prefabricated cooling insert 7 in the manner of a cartridge through the Opening 17 and the channel and with the plate 13 in the opposite aligned opening 18 is immersed in a liquid-tight manner. The in This embodiment formed by the bottom of the exhaust gas supply device 12 Plate 11 brought to the front end wall 15 liquid-tight and remains there by screws not shown in the drawing. In Figure 1 are as further parts of the exhaust gas recirculation device, not shown in full the internal combustion engine two exhaust gas recirculation lines 19, 20 are shown, each of which is connected to an exhaust gas supply device 12. This internally has one Inlet channel 21 and then an exhaust gas plenum 22, from which the recirculated exhaust gas is fed into the cooling pipe (s) 8 or 9 or 10. After flowing through the cooling insert 7 and cooling down accordingly the recirculated exhaust gas flows through the channel 6, the recirculated exhaust gas on the opposite End, in the example according to FIG. 1 controlled by one cooling insert each 7 downstream flap valve installed in the exhaust gas discharge device 14 23 out of the cooling pipe 8, 9 or the cooling pipes 10 and into a discharge duct 24, in which a shut-off or throttle valve 25 can be installed, and is supplied via an exhaust pipe 26 to an organ with which combustion air / charge air and recirculated, cooled exhaust gas back to the internal combustion engine is feedable. On the cooling insert 7 - so far for an optimization of the coolant flow necessary within channel 6 - one or more baffles 27 be provided, which are attached to the cooling pipe 8, 9 or the cooling pipes 10 or arranged and are so large in their configuration that they can be installed and removed the cooling insert cartridge 7 in the line section 1 does not hinder.

Die Figuren 2 und 3 zeigen den Leitungsabschnitt 1 gebildet durch ein gegossenes Kühlflüssigkeitsrücklaufrohr 28. Da in diesem wesentliche Teile konstruktiv identisch mit jenen Teilen der Lösung gemäß Figur 1 sind, werden in Figur 2 und 3 die entsprechenden Teile mit gleichen Bezugszeichen, aber mit Hochstrich versehen, verwendet. Das Kühlflüssigkeitsrücklaufrohr 28 erstreckt sich seitlich neben einem Zylinderkopf bzw. Zylinderköpfen 29 der desweiteren nicht dargestellten Brennkraftmaschine und ist an diesem bzw. diesen flüssigkeitsdicht angeflanscht sowie in dieser Anbaulage mittels Schrauben 30 gehalten. Die Kühlflüssigkeit wird in diesem Fall von zylinderkopfinternen Kühlräumen und Ablaßkanälen 31 her über am Kühlflüssigkeitsrücklaufrohr 28 mitangegossene Zulaufkrümmer 3' in den Kanal 6' eingespeist und dann nach dessen Durchströmung aus diesem wieder über einen oder mehrere, in Figur 2 und 3 nicht dargestellte Ablaßstutzen ausgeleitet und einem nachgeordneten Organ wie Thermostat und/oder Retarder zugeführt. In das Kühlflüssigkeitsrücklaufrohr 28 ist hier, im Gegensatz zur Lösung gemäß Figur 1, nur ein Kühleinsatz 7' nach Art einer Kartusche eingebaut, sodaß in der Stirnwand 15' auch nur eine Öffnung bzw. ein Durchbruch 17' für den Ein- und Ausbau der Kühleinsatz-Kartusche 7' gegeben ist. Die abgasseitigen Enden der Kühlerrohre 10' des Kühleinsatzes 7' sind hier in einer Platte 11' flüssigkeitsdicht gefaßt, die unter beidseitiger Beilage von Dichtungen zusammen mit der hier einteiligen, zweiflutigen Abgaszuführeinrichtung 12' flüssigkeitsdicht außen an der Stirnseite 15' angeflanscht und mittels nicht dargestellter Schrauben befestigt ist. Im Bereich ihrer abgasaustrittsseitigen Enden sind die Kühlerrohre 10' in ähnlicher Weise wie bei der Lösung gemäß Figur 1 in zwei Platten 13' flüssigkeitsdicht gefaßt aufgenommen, die wiederum flüssigkeitsdicht in die beiden Öffnungen bzw. Durchbrüche 18' der Stirnwand 16' des Kühlflüssigkeitsrücklaufrohres 28 eintauchen. Außen davor schließt sich wie bei der Lösung gemäß Figur 1 eine Abgasableiteinrichtung 14' mit zwei Flatterventilen 23', Abführkanal 24', Absperr- bzw. Drosselventil 25' und Abgasleitung 26' an. Figures 2 and 3 show the line section 1 formed by a cast Coolant return pipe 28. Because this is structurally identical parts with those parts of the solution according to Figure 1, the corresponding in Figures 2 and 3 Parts with the same reference numerals but with a prime are used. The coolant return pipe 28 extends laterally next to a cylinder head or cylinder heads 29 of the internal combustion engine, also not shown and is flanged to this or these in a liquid-tight manner and in this Mounting position held by screws 30. The coolant in this case from inside the cylinder head cooling chambers and drain channels 31 over to the coolant return pipe 28 co-cast intake manifold 3 'fed into the channel 6' and then after it flows through it again via an or a plurality of drain nozzles, not shown in FIGS. 2 and 3, and one subordinate organ such as thermostat and / or retarder fed. In the coolant return pipe 28, in contrast to the solution according to FIG. 1, is only one Cooling insert 7 'installed like a cartridge, so that in the end wall 15' only one opening or opening 17 'for the installation and removal of the cooling insert cartridge 7 'is given. The exhaust-side ends of the cooler tubes 10 'of the cooling insert 7 'are liquid-tight here in a plate 11', the under on both sides Supplement of seals together with the one-piece, two-flow exhaust gas supply device 12 'flanged liquid-tight on the outside on the end face 15' and is attached by means of screws, not shown. In the area of their exhaust outlet side The ends of the radiator tubes 10 'are similar to those in the solution according to FIG Figure 1 recorded in two plates 13 'liquid-tight, which in turn liquid-tight in the two openings or openings 18 'of the end wall 16' immerse the coolant return pipe 28. Outside in front closes like at 1, an exhaust gas discharge device 14 'with two flutter valves 23 ', discharge duct 24', shut-off or throttle valve 25 'and exhaust pipe 26'.

Wie die Figuren 4 bis 8 zeigen, kann der Kühleinsatz 7 bzw. 7' entweder nur ein speziell gestaltetes Kühlrohr 8 bzw. 9 oder ein Bündel von Kühlerrohren 10, 10' aufweisen, das bzw. jedes derselben durch einen Profilrohr-Abschnitt gebildet ist. Die Länge, Querschnittsform und -größe sowie die Anzahl der Kühlrohre ist grundsätzlich auf die aus dem rückgeführten Abgas bei dessen Durchströmung durch den Kühleinsatz 7 bzw. 7' über die Kühlflüssigkeit abzuführende Wärmemenge abgestellt. So zeigt Figur 4 ein Bündel von neun Kühlrohren 10, 10' mit kreisringförmigem Querschnitt. Figur 6 zeigt ein Bündel von vier Kühlrohren 10, 10' mit rechteckigem Querschnitt und zudem unterschiedlichen Querschnittsgrößen. Figur 7 zeigt ein Bündel von vier runden Kühlrohren 10, 10' mit kreisringförmigem Querschnitt. Figur 8 zeigt ein einziges Kühlrohr 9 mit im wesentlichen sternförmigem Querschnitt und Figur 5 zeigt ein einziges Kühlrohr 8 mit rundem Zentralrohr und außen sternförmig abragenden Kühlrippen. Es ist anzumerken, daß die Figuren 4 bis 8 nur Beispiele aufzeigen sollen für mögliche Kühlrohr-Gestaltungsformen innerhalb eines Kühleinsatzes 7, 7'.As FIGS. 4 to 8 show, the cooling insert 7 or 7 'can either be only one have specially designed cooling pipe 8 or 9 or a bundle of cooling pipes 10, 10 ', that or each of them is formed by a profile tube section. The The length, cross-sectional shape and size as well as the number of cooling tubes is fundamental to the from the recirculated exhaust gas as it flows through the Cooling insert 7 or 7 'turned off via the amount of heat to be dissipated. Figure 4 shows a bundle of nine cooling tubes 10, 10 'with an annular Cross-section. Figure 6 shows a bundle of four cooling tubes 10, 10 'with a rectangular Cross section and also different cross section sizes. Figure 7 shows a Bundle of four round cooling tubes 10, 10 'with an annular cross section. Figure 8 shows a single cooling tube 9 with an essentially star-shaped cross section and FIG. 5 shows a single cooling tube 8 with a round central tube and a star shape on the outside protruding cooling fins. It should be noted that Figures 4 to 8 are only examples should show for possible cooling pipe designs within a Cooling insert 7, 7 '.

Das erfindungsgemäße Verfahren zur Kühlung des rückgeführten Abgases stellt sich mit einer Vorrichtung der erfindungsgemäßen Art wie folgt dar. Das rückgeführte Abgas wird vor seiner Wiedereinleitung in den Verbrennungsprozeß der Brennkraftmaschine gemäß Pfeil 32 über die Abgaszuführeinrichtung 12, 12' dem im kühlflüssigkeitsführenden Kanal 6 gegebenen Kühleinsatz 7, 7' zugeführt und durch dessen Kühlrohr 8, 9 bzw. Kühlerrohre 10, 10' hindurchgeleitet und dabei durch die den Kanal 6 durchströmende, das Kühlrohr bzw. die Kühlrohre umspülende Kühlflüssigkeit gekühlt. Anschließend wird das solchermaßen rückgekühlte, rückgeführte Abgas nach Ausleitung aus dem Kühleinsatz 7, 7' weitergeleitet für entsprechende Wiederverwertung in der Brennkraftmaschine.The method according to the invention for cooling the recirculated exhaust gas arises with a device of the type according to the invention as follows Exhaust gas is released before it is reintroduced into the combustion process of the internal combustion engine according to arrow 32 via the exhaust gas supply device 12, 12 'in the coolant-carrying Channel 6 given cooling insert 7, 7 'and fed through whose cooling tube 8, 9 or cooler tubes 10, 10 'passed and thereby through the the cooling liquid flowing through the channel 6 and rinsing the cooling pipe or the cooling pipes chilled. Then the so cooled, recirculated Exhaust gas after discharge from the cooling insert 7, 7 'passed on for corresponding Recycling in the internal combustion engine.

Claims (10)

Vorrichtung zur Kühlung rückgeführten Abgases einer flüssigkeitsgekühlten Brennkraftmaschine mit Abgasrückführeinrichtung, gekennzeichnet durch einen Kühleinsatz (7, 7') in einem kühlflüssigkeitsführenden Kanal (6, 6') der Brennkraftmaschine und eine entsprechende Gestaltung des den Kanal (6, 6') im Bereich des Kühleinsatzes (7, 7') begrenzenden Bauteils (1, 28) für eine Kühlung des den Kühleinsatz (7, 7') durchströmenden rückgeführten Abgases durch die den Kanal (6, 6') durchströmende Kühlflüssigkeit.Device for cooling recirculated exhaust gas from a liquid-cooled Internal combustion engine with exhaust gas recirculation device, characterized by a Cooling insert (7, 7 ') in a coolant-carrying channel (6, 6') of the internal combustion engine and a corresponding design of the channel (6, 6 ') in the area of the cooling insert (7, 7 ') delimiting component (1, 28) for cooling of the recirculated exhaust gas flowing through the cooling insert (7, 7 ') through the coolant flowing through the channel (6, 6 '). Verfahren zur Kühlung rückgeführten Abgases einer flüssigkeitsgekühlten Brennkraftmaschine mit Abgasrückführeinrichtung, dadurch gekennzeichnet, daß das rückgeführte Abgas vor seiner Wiedereinleitung in den Verbrennungsprozeß der Brennkraftmaschine durch einen in einem kühlflüssigkeitsführenden Kanal (6, 6') angeordneten Kühleinsatz (7, 7') hindurchgeleitet und dabei durch die den Kanal (6, 6') durchströmende Kühlflüssigkeit der Brennkraftmaschine gekühlt wird.Process for cooling recirculated exhaust gas from a liquid-cooled Internal combustion engine with exhaust gas recirculation device, characterized in that the recirculated exhaust gas before it is reintroduced into the combustion process the internal combustion engine through a coolant-carrying channel (6, 6 ') arranged cooling insert (7, 7') passed and thereby through the the cooling liquid of the internal combustion engine flowing through the channel (6, 6 ') is cooled becomes. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Kanal (6, 6') mit dem Kühleinsatz (7, 7') innerhalb der Brennkraftmaschine, dort beispielsweise im Bereich des Kurbelgehäuses oder des Zylinderkopfes, angeordnet ist.Device according to claim 1, characterized in that the channel (6, 6 ') with the cooling insert (7, 7 ') within the internal combustion engine, for example in the Area of the crankcase or the cylinder head is arranged. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Kanal (6, 6') mit dem Kühleinsatz (7, 7') außerhalb der Brennkraftmaschine angeordnet und an bzw. in einer Kühlflüssigkeitsleitung oder einem Abschnitt (1, 28) desselben realisiert ist, die bzw. der beispielsweise im Bereich des Zylinderkopfes (29) neben diesem oder im Bereich zwischen einer Kühlmittelpumpe und dem Kurbelgehäuse oder im Bereich zwischen Kühlmittelpumpe und einem der Brennkraftmaschine vorgeordneten Kühler oder im Bereich zwischen Brennkraftmaschine und einem mit der Kühlflüssigkeit betriebenen Retarder verläuft.Device according to claim 1, characterized in that the channel (6, 6 ') with the cooling insert (7, 7 ') arranged outside of the internal combustion engine and on or realized in a coolant line or a section (1, 28) of the same is next to, for example, in the area of the cylinder head (29) this or in the area between a coolant pump and the crankcase or in the area between the coolant pump and one of the internal combustion engine upstream cooler or in the area between the internal combustion engine and a runs with the coolant operated retarder. Vorrichtung nach den Anspruch 1, dadurch gekennzeichnet, daß der Kanal (6, 6') mit dem Kühleinsatz (7, 7') in bzw. an einem entsprechend umgestalteten Bauteil des Kühlmittelkreislaufes wie Kühlmittelpumpe, Thermostat, Umschaltventil, Ausgleichsbehälter und dergleichen oder einem Retarder realisiert ist oder mit diesem Bauteil eine bauliche Einheit bildet.Device according to claim 1, characterized in that the channel (6, 6 ') with the cooling insert (7, 7') in or on a correspondingly redesigned Component of the coolant circuit such as coolant pump, thermostat, changeover valve, Expansion tank and the like or a retarder realized is or forms a structural unit with this component. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß der Kühleinsatz (7, 7') ein Bündel mit mehreren von rückgeführtem Abgas durchströmbaren Kühlrohren (10, 10') aufweist, die einenendes an eine Abgaszuführeinrichtung (12, 12') und andernendes an eine Abgasableiteinrichtung (14, 14') angeschlossen und außerdem endseitig jeweils durch eine Platte oder Wand (11, 11' bzw. 13, 13') flüssigkeitsdicht hindurchgeführt sind, die den kühlflüssigkeitsführenden Kanal (6, 6') im Bereich des Kühleinsatzes (7, 7') zur Abgaszuführeinrichtung und Abgasableiteinrichtung hin abdichtet.Device according to one of claims 3 to 5, characterized in that the cooling insert (7, 7 ') a bundle with several of the recirculated exhaust gas flowable cooling tubes (10, 10 '), one end of an exhaust gas supply device (12, 12 ') and others to an exhaust gas discharge device (14, 14 ') connected and also at the ends by a plate or wall (11, 11 'or 13, 13') are passed liquid-tight, which the coolant-carrying channel (6, 6 ') in the area of the cooling insert (7, 7') Exhaust gas supply device and exhaust gas discharge device seals off. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß der Kühleinsatz (7, 7') ein einziges, hinsichtlich seines z. B. sternförmigen Querschnitts oder seiner Ausgestaltung mit inneren und/oder äußeren Kühlrippen auf eine hohe Kühlleistung ausgelegtes Kühlrohr (8, 9) aufweist, das einenendes an eine Abgaszuführeinrichtung (12, 12') und andernendes Abgasableiteinrichtung (14, 14') angeschlossen und außerdem endseitig jeweils durch eine Platte oder Wand (11, 11' bzw. 13, 13') flüssigkeitsdicht hindurchgeführt ist, die den kühlflüssigkeitsführenden Kanal (6, 6') im Bereich des Kühleinsatzes (7, 7') zur Abgaszuführeinrichtung und Abgasableiteinrichtung hin abdichtet.Device according to one of claims 3 to 5, characterized in that the cooling insert (7, 7 ') a single, in terms of its z. B. star-shaped cross section or its design with inner and / or outer cooling fins has a high cooling capacity designed cooling tube (8, 9), one end an exhaust gas supply device (12, 12 ') and other exhaust gas discharge device (14, 14 ') connected and also at the ends by a plate or wall (11, 11 'or 13, 13') is passed liquid-tight, which the coolant-carrying channel (6, 6 ') in the area of the cooling insert (7, 7') Exhaust gas supply device and exhaust gas discharge device seals off. Vorrichtung nach den Ansprüchen 6 und 7, dadurch gekennzeichnet, daß das Kühlrohr (8, 9) bzw. jedes der Kühlerrohre (10, 10') durch einen Profilrohrabschnitt gebildet ist, dessen Länge, Querschnittsgröße und -form sowie deren Anzahl auf die aus dem rückgeführten Abgas abzuführende Wärmemenge abgestellt ist.Device according to claims 6 and 7, characterized in that the Cooling tube (8, 9) or each of the cooler tubes (10, 10 ') through a profile tube section is formed, its length, cross-sectional size and shape and their number based on the amount of heat to be removed from the recirculated exhaust gas is. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der kühlflüssigkeitsführende Kanal (6, 6') mit dem Kühleinsatz (7, 7') in einem gegossenen Kühlflüssigkeitsrücklaufrohr (28) realisiert ist, das sich seitlich neben dem Zylinderkopf bzw. den Zylinderköpfen (29) der Brennkraftmaschine erstreckend an diesem bzw. diesen angeflanscht ist, wobei die Kühlflüssigkeit in den Kanal (6, 6') über am Kühlflüssigkeitsrücklaufrohr (28) mitangegossene Zulaufkrümmer (3') von zylinderkopfinternen Kühlräumen und Ablaßkanälen (31) her eingespeist und dann über einen oder mehrere Ablaßstutzen aus dem Kanal (6') nach dessen Durchströmung wieder aus- und einem nachgeordneten Organ wie Thermostat und/oder Retarder zugeleitet wird.Apparatus according to claim 4, characterized in that the coolant-carrying Channel (6, 6 ') with the cooling insert (7, 7') in a cast coolant return pipe (28) is realized on the side next to the cylinder head or the cylinder heads (29) of the internal combustion engine extending thereon or flanged to it, the coolant flowing into the channel (6, 6 ') Via the inlet elbow (3 ') cast on the coolant return pipe (28) fed from cold rooms and drain channels (31) inside the cylinder head and then via one or more drain stubs from the channel (6 ') after it Flow out again and a subordinate organ such as a thermostat and / or retarder is fed. Vorrichtung nach einem oder mehreren der Ansprüche 1 und 3 bis 9, dadurch gekennzeichnet, daß der Kühleinsatz (7, 7') als vorgefertigte Baueinheit nach Art einer Kartusche gestaltet und solchermaßen in den kühlflüssigkeitsführenden Kanal (6, 6') bzw. das diesen begrenzende Bauteil (1, 28) eingebaut ist.Device according to one or more of claims 1 and 3 to 9, characterized characterized in that the cooling insert (7, 7 ') as a prefabricated unit according to Art a cartridge designed and in such a way in the coolant Channel (6, 6 ') or the component (1, 28) delimiting them is installed.
EP98124173A 1998-01-15 1998-12-21 Device for cooling recirculated exhaust gas of a liquid cooled engine Expired - Lifetime EP0930429B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT98124173T ATE244821T1 (en) 1998-01-15 1998-12-21 DEVICE FOR COOLING RECYCLED EXHAUST GASES OF A LIQUID-COOLED INTERNATIONAL ENGINE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT4398 1998-01-15
AT0004398A AT411546B (en) 1998-01-15 1998-01-15 LIQUID-COOLED INTERNAL COMBUSTION ENGINE WITH EXHAUST GAS RECIRCULATING DEVICE AND DEVICE FOR COOLING RECYCLED EXHAUST

Publications (3)

Publication Number Publication Date
EP0930429A2 true EP0930429A2 (en) 1999-07-21
EP0930429A3 EP0930429A3 (en) 1999-12-29
EP0930429B1 EP0930429B1 (en) 2003-07-09

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EP98124173A Expired - Lifetime EP0930429B1 (en) 1998-01-15 1998-12-21 Device for cooling recirculated exhaust gas of a liquid cooled engine

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EP (1) EP0930429B1 (en)
AT (2) AT411546B (en)
DE (1) DE59808978D1 (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0916837A3 (en) * 1997-11-17 2000-03-08 Behr GmbH & Co. Exhaust gas recirculating device for a combustion engine
EP1096131A1 (en) * 1999-10-26 2001-05-02 Senior Flexonics Automotive Limited Exhaust gas recirculation cooler
EP1063411A3 (en) * 1999-06-26 2001-07-11 Man Nutzfahrzeuge Ag Exhaust gas recirculation duct for a combustion engine
EP1139055A2 (en) * 2000-03-29 2001-10-04 SGL Acotec GmbH Heat exchanger with multiple tube bundles
WO2003044441A1 (en) 2001-11-22 2003-05-30 Behr Gmbh & Co. Waste gas heat exchanger
WO2003064953A1 (en) 2002-02-01 2003-08-07 Behr Gmbh & Co. Waste gas heat exchanger
DE10351845A1 (en) * 2003-11-06 2005-06-16 Mtu Friedrichshafen Gmbh Exhaust gas heat exchanger for motor vehicle internal combustion engine has low and high temperature branches with individual heat exchangers
EP1548267A1 (en) * 2002-10-02 2005-06-29 Hino Motors, Ltd. Egr cooler
AT413442B (en) * 2004-06-03 2006-02-15 Avl List Gmbh COOLING DEVICE
US7044116B2 (en) 2002-04-25 2006-05-16 Behr Gmbh & Co. Kg Exhaust heat exchanger in particular for motor vehicles
WO2007060172A1 (en) * 2005-11-22 2007-05-31 Dayco Ensa, S.L. Three-pass heat exchanger for an egr system
FR2907889A1 (en) * 2006-10-27 2008-05-02 Valeo Sys Controle Moteur Sas Control valve assembly for heat exchange device, has fixation unit i.e. clamp, fixing valve body to heat exchanger, where unit is made of thermal conductive material and arranged for forming thermal bridge between body and exchanger
FR2907890A1 (en) * 2006-10-27 2008-05-02 Valeo Sys Controle Moteur Sas Valve assembly for heat engine of motor vehicle, has seat forming surfaces, and flap pivoted between connection position, in which pipe is connected to exchanger, and branching position, in which pipe is not connected to exchanger
EP1998017A2 (en) 2003-10-29 2008-12-03 Behr GmbH & Co. KG Heat exchanger
FR2917132A1 (en) * 2007-06-07 2008-12-12 Peugeot Citroen Automobiles Sa Monoblock unit for internal combustion engine of motor vehicle, has passage provided between cooling circuit part of exchanger and case's recess to ensure fluidic communication between cooling circuit parts of exchanger
DE10328846C5 (en) * 2002-06-28 2009-09-24 Denso Corporation, Kariya-City heat exchangers
FR2930022A1 (en) * 2008-04-10 2009-10-16 Valeo Systemes Thermiques Heat exchanger for heat engine of motor vehicle, has control unit partially closing inlet face and/or outlet face, and controlling flow rate of gas via core, and another control unit authorizing or blocking passage of gas in bypass duct
EP1367253B2 (en) † 2002-05-28 2010-06-16 Dayco Ensa, S.L. Heat exchanger for an EGR system with an integrated by-pass duct.
EP2336539A3 (en) * 2009-12-18 2012-03-28 Toyota Jidosha Kabushiki Kaisha Exhaust gas cooler and exhaust gas recirculation system for internal combustion engine
DE102010063264A1 (en) * 2010-12-16 2012-06-21 Mahle International Gmbh Clippings
DE102010054644A1 (en) * 2010-12-15 2012-06-21 Pierburg Gmbh Exhaust gas recirculation device for reducing pollutants during operation of internal combustion engine, has coolant cladding formed between inner and outer housings, and exhaust non-return valves directly fixed on heat exchanger housing
FR2972031A1 (en) * 2011-02-25 2012-08-31 Peugeot Citroen Automobiles Sa Method for installing exhaust gas recirculation module on car, involves removing U-shaped tubes from heat exchanger during optimization of exhaust gas recirculation, before installing another exhaust gas recirculation module
US20130055970A1 (en) * 2010-05-17 2013-03-07 Toyota Jidosha Kabushiki Kaisha Cylinder head having egr gas cooling structure, and method for manufacturing same
DE10349887B4 (en) * 2003-10-25 2013-03-07 Benteler Automobiltechnik Gmbh Radiator for an exhaust gas recirculation system in an internal combustion engine
WO2012143462A3 (en) * 2011-04-20 2013-09-12 Behr Gmbh & Co. Kg Exhaust gas cooler for cooling combustion exhaust gas of an internal combustion engine, water collecting adapter, exhaust gas cooling system and method for manufacturing an exhaust gas cooling system
EP3085942A1 (en) * 2015-04-16 2016-10-26 Bayerische Motoren Werke Aktiengesellschaft Exhaust gas recirculation module with replaceable heat exchanger cassette
EP3284925A1 (en) * 2016-08-19 2018-02-21 General Electric Company Method and systems for an exhaust gas recirculation cooler including two sections
DE10153033B4 (en) 2001-10-26 2018-03-01 Bayerische Motoren Werke Aktiengesellschaft Exhaust gas recirculation heat exchanger for a liquid-cooled internal combustion engine
CN110500208A (en) * 2019-07-29 2019-11-26 东风商用车有限公司 A kind of controllable egr system of application integration binary channels cooler for recycled exhaust gas
US11125135B2 (en) * 2019-03-26 2021-09-21 Faurecia Emissions Control Technologies, Germany Gmbh Modular system for exhaust heat recovery devices, tubular adapter for a modular system, and vehicle

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Publication number Priority date Publication date Assignee Title
DE2802095B2 (en) 1977-01-20 1980-12-18 Isuzu Motors Ltd., Kawasaki, Kanagawa (Japan) Exhaust gas recirculation arrangement for a four-stroke internal combustion engine

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US3677239A (en) * 1970-06-24 1972-07-18 James L Elkins Non-polluting exhaust system for internal combustion engines
US4055158A (en) * 1974-04-08 1977-10-25 Ethyl Corporation Exhaust recirculation
US3937196A (en) * 1975-02-05 1976-02-10 Ford Motor Company Intake manifold for an internal combustion engine having an internally contained exhaust gas recirculation cooler
GB1579276A (en) * 1976-08-23 1980-11-19 Borg Warner Heat exchanger for cooling exhaust gas
US4258687A (en) * 1979-10-09 1981-03-31 Ford Motor Company Engine with integral mounted EGR cooler
JPH0989491A (en) * 1995-09-21 1997-04-04 Usui Internatl Ind Co Ltd Egr gas cooling device
JP3781386B2 (en) * 1996-05-22 2006-05-31 臼井国際産業株式会社 EGR gas cooling device

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Publication number Priority date Publication date Assignee Title
DE2802095B2 (en) 1977-01-20 1980-12-18 Isuzu Motors Ltd., Kawasaki, Kanagawa (Japan) Exhaust gas recirculation arrangement for a four-stroke internal combustion engine

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0916837A3 (en) * 1997-11-17 2000-03-08 Behr GmbH & Co. Exhaust gas recirculating device for a combustion engine
EP1063411A3 (en) * 1999-06-26 2001-07-11 Man Nutzfahrzeuge Ag Exhaust gas recirculation duct for a combustion engine
EP1096131A1 (en) * 1999-10-26 2001-05-02 Senior Flexonics Automotive Limited Exhaust gas recirculation cooler
US6460520B1 (en) 1999-10-26 2002-10-08 Senior Investments Ag Exhaust gas recirculation cooler
EP1139055A2 (en) * 2000-03-29 2001-10-04 SGL Acotec GmbH Heat exchanger with multiple tube bundles
EP1139055A3 (en) * 2000-03-29 2002-01-16 SGL Acotec GmbH Heat exchanger with multiple tube bundles
DE10153033B4 (en) 2001-10-26 2018-03-01 Bayerische Motoren Werke Aktiengesellschaft Exhaust gas recirculation heat exchanger for a liquid-cooled internal combustion engine
DE10157285A1 (en) * 2001-11-22 2003-06-05 Behr Gmbh & Co Exhaust gas heat exchanger
WO2003044441A1 (en) 2001-11-22 2003-05-30 Behr Gmbh & Co. Waste gas heat exchanger
WO2003064953A1 (en) 2002-02-01 2003-08-07 Behr Gmbh & Co. Waste gas heat exchanger
DE10204107B4 (en) 2002-02-01 2018-12-13 Mahle International Gmbh Exhaust gas heat exchanger
US7044116B2 (en) 2002-04-25 2006-05-16 Behr Gmbh & Co. Kg Exhaust heat exchanger in particular for motor vehicles
EP1367253B2 (en) † 2002-05-28 2010-06-16 Dayco Ensa, S.L. Heat exchanger for an EGR system with an integrated by-pass duct.
DE10328846C5 (en) * 2002-06-28 2009-09-24 Denso Corporation, Kariya-City heat exchangers
EP1548267A1 (en) * 2002-10-02 2005-06-29 Hino Motors, Ltd. Egr cooler
EP1548267A4 (en) * 2002-10-02 2010-09-08 Hino Motors Ltd Egr cooler
DE10349887B4 (en) * 2003-10-25 2013-03-07 Benteler Automobiltechnik Gmbh Radiator for an exhaust gas recirculation system in an internal combustion engine
EP1998017A2 (en) 2003-10-29 2008-12-03 Behr GmbH & Co. KG Heat exchanger
DE10351845B4 (en) * 2003-11-06 2006-02-02 Mtu Friedrichshafen Gmbh Exhaust gas heat exchanger
DE10351845A1 (en) * 2003-11-06 2005-06-16 Mtu Friedrichshafen Gmbh Exhaust gas heat exchanger for motor vehicle internal combustion engine has low and high temperature branches with individual heat exchangers
AT413442B (en) * 2004-06-03 2006-02-15 Avl List Gmbh COOLING DEVICE
WO2007060172A1 (en) * 2005-11-22 2007-05-31 Dayco Ensa, S.L. Three-pass heat exchanger for an egr system
CN101356358B (en) * 2005-11-22 2011-08-10 特高恩莎有限公司 Three-pass heat exchanger for an EGR system
WO2008053093A1 (en) * 2006-10-27 2008-05-08 Valeo Systemes De Controle Moteur Regulator valve connected to an exchanger by means of a thermal bridge and corresponding heat exchanger device
WO2008053091A1 (en) * 2006-10-27 2008-05-08 Valeo Systemes De Controle Moteur Egr/by pass valve unit and heat exchanger device provided with such a valve unit
FR2907890A1 (en) * 2006-10-27 2008-05-02 Valeo Sys Controle Moteur Sas Valve assembly for heat engine of motor vehicle, has seat forming surfaces, and flap pivoted between connection position, in which pipe is connected to exchanger, and branching position, in which pipe is not connected to exchanger
FR2907889A1 (en) * 2006-10-27 2008-05-02 Valeo Sys Controle Moteur Sas Control valve assembly for heat exchange device, has fixation unit i.e. clamp, fixing valve body to heat exchanger, where unit is made of thermal conductive material and arranged for forming thermal bridge between body and exchanger
FR2917132A1 (en) * 2007-06-07 2008-12-12 Peugeot Citroen Automobiles Sa Monoblock unit for internal combustion engine of motor vehicle, has passage provided between cooling circuit part of exchanger and case's recess to ensure fluidic communication between cooling circuit parts of exchanger
FR2930022A1 (en) * 2008-04-10 2009-10-16 Valeo Systemes Thermiques Heat exchanger for heat engine of motor vehicle, has control unit partially closing inlet face and/or outlet face, and controlling flow rate of gas via core, and another control unit authorizing or blocking passage of gas in bypass duct
EP2336539A3 (en) * 2009-12-18 2012-03-28 Toyota Jidosha Kabushiki Kaisha Exhaust gas cooler and exhaust gas recirculation system for internal combustion engine
US9689303B2 (en) * 2010-05-17 2017-06-27 Toyota Jidosha Kabushiki Kaisha Cylinder head having EGR gas cooling structure, and method for manufacturing same
US20130055970A1 (en) * 2010-05-17 2013-03-07 Toyota Jidosha Kabushiki Kaisha Cylinder head having egr gas cooling structure, and method for manufacturing same
DE102010054644B4 (en) * 2010-12-15 2012-12-27 Pierburg Gmbh Exhaust gas recirculation device for an internal combustion engine
DE102010054644A1 (en) * 2010-12-15 2012-06-21 Pierburg Gmbh Exhaust gas recirculation device for reducing pollutants during operation of internal combustion engine, has coolant cladding formed between inner and outer housings, and exhaust non-return valves directly fixed on heat exchanger housing
DE102010063264A1 (en) * 2010-12-16 2012-06-21 Mahle International Gmbh Clippings
FR2972031A1 (en) * 2011-02-25 2012-08-31 Peugeot Citroen Automobiles Sa Method for installing exhaust gas recirculation module on car, involves removing U-shaped tubes from heat exchanger during optimization of exhaust gas recirculation, before installing another exhaust gas recirculation module
US9169756B2 (en) 2011-04-20 2015-10-27 Mahle International Gmbh Exhaust gas cooler for cooling combustion exhaust gas of an internal combustion engine, water collecting adapter, exhaust gas cooling system and method for manufacturing an exhaust gas cooling system
WO2012143462A3 (en) * 2011-04-20 2013-09-12 Behr Gmbh & Co. Kg Exhaust gas cooler for cooling combustion exhaust gas of an internal combustion engine, water collecting adapter, exhaust gas cooling system and method for manufacturing an exhaust gas cooling system
EP3085942A1 (en) * 2015-04-16 2016-10-26 Bayerische Motoren Werke Aktiengesellschaft Exhaust gas recirculation module with replaceable heat exchanger cassette
EP3284925A1 (en) * 2016-08-19 2018-02-21 General Electric Company Method and systems for an exhaust gas recirculation cooler including two sections
US10352278B2 (en) 2016-08-19 2019-07-16 Ge Global Sourcing Llc Method and systems for an exhaust gas recirculation cooler including two sections
US11125135B2 (en) * 2019-03-26 2021-09-21 Faurecia Emissions Control Technologies, Germany Gmbh Modular system for exhaust heat recovery devices, tubular adapter for a modular system, and vehicle
CN110500208A (en) * 2019-07-29 2019-11-26 东风商用车有限公司 A kind of controllable egr system of application integration binary channels cooler for recycled exhaust gas
CN110500208B (en) * 2019-07-29 2020-10-27 东风商用车有限公司 Controllable EGR system applying integrated double-channel EGR cooler

Also Published As

Publication number Publication date
DE59808978D1 (en) 2003-08-14
EP0930429A3 (en) 1999-12-29
EP0930429B1 (en) 2003-07-09
AT411546B (en) 2004-02-25
ATE244821T1 (en) 2003-07-15
ATA4398A (en) 2003-07-15

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