EP1455079A2 - Heat transfer device between the exhaust gas of an internal combustion engine and a cooling fluid - Google Patents

Heat transfer device between the exhaust gas of an internal combustion engine and a cooling fluid Download PDF

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Publication number
EP1455079A2
EP1455079A2 EP04000419A EP04000419A EP1455079A2 EP 1455079 A2 EP1455079 A2 EP 1455079A2 EP 04000419 A EP04000419 A EP 04000419A EP 04000419 A EP04000419 A EP 04000419A EP 1455079 A2 EP1455079 A2 EP 1455079A2
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EP
European Patent Office
Prior art keywords
exhaust gas
ball
heat transfer
area
flow
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
EP04000419A
Other languages
German (de)
French (fr)
Other versions
EP1455079A3 (en
EP1455079B1 (en
Inventor
Uwe Bretag
Rolf Lange
Johannes Böke
Reimund Wilm
Jürgen Krogmeier
Rainer Isermann
Wulf HÄRTEL
Xiang Sun
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Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
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Publication date
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP1455079A2 publication Critical patent/EP1455079A2/en
Publication of EP1455079A3 publication Critical patent/EP1455079A3/en
Application granted granted Critical
Publication of EP1455079B1 publication Critical patent/EP1455079B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M26/13—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
    • F02M26/25—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
    • F02M26/65—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
    • 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
    • F28D7/1653—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 the conduit assemblies having a square or rectangular shape
    • 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

Definitions

  • the invention relates to a device for heat transfer between the exhaust gas an internal combustion engine and a coolant, and in particular an exhaust gas cooler in exhaust gas recirculation to an internal combustion engine.
  • This has one of a housing wall surrounding exhaust gas inlet and exhaust area and a heat transfer area arranged therebetween. In the heat transfer area a bypass channel is integrated.
  • a control element is used for control of the exhaust gas flows through the heat transfer area or the bypass duct.
  • exhaust gas coolers are used in EGR (exhaust gas recirculation) systems that serve to reduce the emission values of the exhaust gas in internal combustion engines.
  • EGR exhaust gas recirculation
  • part of the exhaust gases are drawn into the intake manifold and then into the combustion chamber of the engine returned to the combustion temperature and thus the NOx production to humiliate.
  • the exhaust gas must pass the radiator or be bundled in such a way that cooling no longer takes place or only takes place marginally. This is achieved by means of a controllable bypass function, with the exhaust gas temporarily is redirected.
  • this bypass function is known through a separate bypass pipe to build.
  • the described EGR system includes an EGR pipe that the Exhaust pipe connects to the intake manifold of the engine.
  • this tube is an EGR cooler used, which can be bypassed with the bypass tube.
  • the exhaust gas flow is controlled by means of a valve located on the branch between the bypass pipe and the EGR pipe with an integrated cooler, the known system being none compact unit.
  • An exhaust gas heat transfer device is known from US Pat. No. 6,141,961 the exhaust gas heat is used to heat the passenger compartment.
  • the transmission facility comprises two parallel pipes, one main pipe and a bypass duct provided with a heat exchanger.
  • the regulation of the gas flow that flows into the heat exchanger is achieved by means of a flap.
  • the bypass is in the heat transfer area or integrated the cooler.
  • the heat exchanger system described serves to heat the exhaust gas during the warm-up phase of the engine to be used to adequately and quickly heat the vehicle interior deliver safely. Heat is extracted from the exhaust gas via a heat exchanger be fed to the cooling circuit of the engine, thereby heating the cooling circuit with an attached radiator for the vehicle interior to accelerate.
  • a heat exchanger comprises a housing with an exhaust gas inlet and an exhaust gas outlet area and a heat transfer area, a bypass channel being integrated in the heat transfer area.
  • a Control element which is made of a one-sided clamped and adjustable sheet exists, either the bypass duct or the heat transfer area can be sealed or intermediate positions can be set.
  • the shape of an adjustable plate is not suitable for controlling the Exhaust gas flow in one embodiment of a heat transfer area with one not Bypass close to the edge.
  • the object of the invention is to provide a device for Heat transfer between the exhaust gas of an internal combustion engine and one Coolant, especially a regulated EGR cooler, with a simple and safe working exhaust gas flow control with a compact design and independent from the arrangement of the bypass duct in the heat transfer area create.
  • the core idea of the invention is as an adjusting element for regulating the exhaust gas flow and optional exhaust gas cooling to use a ball. It is either in the exhaust gas inlet area in front of the inlet opening of the bypass duct or analogously in the exhaust gas outlet area arranged after the outlet opening of the bypass channel.
  • the flow control is done by rotating the ball between a first and a second rotating position reached.
  • the ball is constructed so that in the first ball turning position the Bypass channel is open and at the same time a flow through the heat transfer area is prevented.
  • the ball closes in the second ball slewing ring the bypass channel and allows the exhaust gas to flow through the heat transfer area to.
  • the ball has a central flow channel. This is in flow connection with the opening of the bypass channel in the first ball rotation position.
  • the flow of the exhaust gas through the spherical body prevented in or out of the heat transfer area.
  • the Ball radially in its outer sphere area, namely outside the flow channel, at least one flow area. This runs across, preferably at right angles to the flow channel. In the second rotary position, over the spherical body of the bypass channel is closed, while exhaust gas flows through the outer Flow area in or out of the heat transfer area becomes. There are also intermediate positions between these two end positions possible.
  • the ball can be produced reproducibly even with large quantities and allows safe and fast control of the exhaust gas flows.
  • the actuator is either in the exhaust gas inlet or in the exhaust gas outlet area, whereby for the Flow control only the ball and no other closure on the other End of the component is necessary.
  • the ball body In the first ball turning position, the ball body itself prevents Exhaust gas flows through the heat transfer area. This is achieved in that the spherical body on the inner wall of the exhaust gas inlet area or Exhaust outlet area comes to the plant sealing. That means at this Place the diameter of the entry or exit area in the clear diameter corresponds to the ball.
  • the respective flow areas are formed as grooves in the outer region of the ball. After a another embodiment, it is also possible that these flow areas are drilled into the ball in the outer area. It is only important that the Ball next to the central flow channel radially in an outer ball area Flow areas, for example bores or open to the outside Grooves.
  • the groove solution is further developed by grooves in the ball in this way are introduced from the outside that a spherical segment formed between the grooves, in particular a spherical center segment remains. This takes over the sealing function on the housing inner wall to prevent exhaust gas flows through the heat transfer area in the first rotational position.
  • the ball according to the invention is, for example, by mechanical processing a metallic solid sphere.
  • the grooves are from the outside in the ball milled.
  • the central flow channel is drilled into the spherical body.
  • An alternative Manufacturing is cold extrusion, where appropriate pressing the flow channel and the grooving is carried out in two steps.
  • the ball is in its rotational position before or after the bypass channel through one with the Spherical rod or shaft connected to which is also rotated.
  • the rod protrudes beyond the housing wall of the entry or exit area and is rotated by appropriate actuating means.
  • connection piece is placed on the entrance area, which the ball partially surrounds. On the other hand, it takes up the exhaust pipe. The same applies to the exhaust gas outlet area.
  • the proposed control element in the form of a ball allows flexible arrangement the bypass duct in the heat transfer area.
  • the bypass channel can be central be integrated, it can for example also close to the edge or directly on the edge of the Heat transfer area may be arranged.
  • the ball is then arranged accordingly and the space required for this by adjusting the exhaust gas inlet or - exit area created.
  • the exhaust gas cooler 1 shows an exhaust gas cooler 1 as used in an EGR system can.
  • the exhaust gas cooler 1 can be in one piece from a heat transfer area and an exhaust gas inlet and exhaust gas outlet area adjoining it at the ends, which are enclosed by a common housing his.
  • it consists of the heat transfer area 2, with which the exhaust gas inlet area 3, which is subsequently used as a diffuser is referred to, as well as the exhaust gas outlet area 4 or its housing walls 5, 6 are connected.
  • the heat transfer area 2 is in this embodiment centrally arranged a bypass channel 7.
  • the bypass duct 7 itself is a tube with a round cross section, which insulates the air gap with a sliding fit within the heat transfer area 2 is arranged by is also soldered to the perforated plates 9. This has the advantage that the bypass channel 7 can be easily integrated as a cylindrical tube, on the other hand, the same Manufacturing technology as the tubes 8 are used.
  • the housing walls 5, 6 of the diffuser 3 and the exhaust gas outlet area 4 are tapered towards the inlet and outlet (E, A) and end in a connector 12, 13.
  • the connector 12, 13 takes the pipe (not shown) containing the exhaust gas AG transported to or further to the intake manifold of the engine.
  • a ball 14 or a spherical Adjusting element rotatably arranged Inside the diffuser 3 is to control the exhaust gas flows through the heat transfer area 2 or the bypass channel 7 a ball 14 or a spherical Adjusting element rotatably arranged.
  • the ball 14 is located directly in front of the inlet opening 15 of the bypass channel 7.
  • FIGS. 2, 3 and 4 show the heat transfer area 2 with the ball 14 arranged in front of it without housing wall of the diffuser.
  • the ball 14 has a central one Flow channel 16 or a central bore with a uniform through the spherical body Diameter on.
  • the diameter of the flow channel 16 corresponds to that Diameter of the inlet opening 15 of the bypass channel 7 outer spherical area - outside the flow channel 16 - four flow areas 17 introduced in the form of grooves.
  • the grooves or indentations or also slot-shaped notches run in the embodiment shown perpendicular to the central flow channel 16. You can if necessary should also be slightly inclined.
  • a single flow area is basically sufficient for the function of the ball out.
  • Two, three or, as shown, four or possibly more grooves can also be provided his. It is only important that in addition to a flow area also a spherical segment remains in the other ball turning position to prevent flow, which on the inside wall of the diffuser or, if necessary, the connector comes close to the system.
  • a spherical segment remains in the other ball turning position to prevent flow, which on the inside wall of the diffuser or, if necessary, the connector comes close to the system.
  • there are four Grooves are machined from the spherical solid body so that they are perpendicular to the Flow channel 16 a disc-shaped spherical center segment 18 with the original Ball diameter remains.
  • On this ball center segment 18 is an adjustment rod 19 or shaft arranged over which the ball 14 about its axis of rotation, which is perpendicular runs to the bypass channel direction, is adjustable. About this adjustment rod 19 is the Ball 14 also stored.
  • the ball 14 In the first rotational position, the ball 14 is rotated so that the flow channel emerges 16 abuts the inlet opening 15 of the bypass channel 7. That the ball diameter corresponding spherical center segment 18 lies flush in this position a correspondingly designed housing 5 of the diffuser on how this Fig. 1 can be seen.
  • the exhaust gas (AG) through the pipe (not shown) and the Connector 12 is inserted through this ball center segment 18 on one Entry into the heat transfer area 2 prevented.
  • the entire exhaust AG flows through the flow channel 16 into the bypass channel 7 Heat transfer area 2 is isolated, the exhaust gas AG in this first position not chilled.
  • the ball 14 is actuated (not shown), which engage on the adjusting rod 19, rotated into the second position, as shown in Figs. 3 and 4.
  • the bypass channel 7 is in this position tightly sealed by the spherical shape.
  • the grooves are only so deep in the spherical body incorporated that the remaining central spherical part closes the bypass channel 7.
  • the exhaust gas AG flows through the connector 12 via the flow areas 17 or grooves of the ball 14 in the diffuser 3 and from there into the Pipe bundle of the heat transfer area 2, where there is coolant flowing past is cooled.
  • the present device can also be used in the Exhaust system in the flow direction in front of a catalytic converter for setting a temperature window Find use.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The exhaust gas cooling device has a heat transfer region (2) for transfer of heat from the exhaust gas to a cooling medium, positioned between an exhaust gas entry region (3) and an exhaust gas exit region (4). A setting element, for control of the exhaust gas flow through an integrated bypass channel (7) for the heat transfer region is provided by rotary ball (14) provided with a through flow channel, positioned infront of the entry opening (15) of the bypass channel or after its exit opening. The outside surface of the ball has at least one flow region, for passage of the exhaust gas through the heat transfer region in a second rotary position, in which the bypass channel is closed by the ball body.

Description

Die Erfindung betrifft eine Vorrichtung zur Wärmeübertragung zwischen dem Abgas eines Verbrennungsmotors und einem Kühlmittel und hier insbesondere einen Abgaskühler bei der Abgasrückführung zu einem Verbrennungsmotor. Diese weist einen von einer Gehäusewandung umgebenen Abgaseintritts- und Abgasaustrittsbereich und einen dazwischen angeordneten Wärmeübertragungsbereich auf. In den Wärmeübertragungsbereich ist ein Bypass-Kanal integriert. Ein Steuerelement dient zur Steuerung der Abgasströme durch den Wärmeübertragungsbereich oder den Bypass-Kanal.The invention relates to a device for heat transfer between the exhaust gas an internal combustion engine and a coolant, and in particular an exhaust gas cooler in exhaust gas recirculation to an internal combustion engine. This has one of a housing wall surrounding exhaust gas inlet and exhaust area and a heat transfer area arranged therebetween. In the heat transfer area a bypass channel is integrated. A control element is used for control of the exhaust gas flows through the heat transfer area or the bypass duct.

Derartige Abgaskühler werden in AGR-(Abgas-Rückführ)-Systemen eingesetzt, die bei Verbrennungsmotoren zur Reduzierung der Emissionswerte des Abgases dienen. Hierbei wird ein Teil der Abgase in das Saugrohr und dann in die Verbrennungskammer des Motors zurückgeführt, um die Verbrennungstemperatur und damit die NOx-Produktion zu erniedrigen. Wenn keine Kühlung des Abgases gewünscht ist, insbesondere beim Start des Motors, muss das Abgas an dem Kühler vorbei geleitet bzw. so gebündelt werden, dass eine Kühlung nicht mehr bzw. nur noch marginal stattfindet. Dies wird durch eine regelbare Bypassfunktion realisiert, wobei das Abgas zeitweise umgeleitet wird.Such exhaust gas coolers are used in EGR (exhaust gas recirculation) systems that serve to reduce the emission values of the exhaust gas in internal combustion engines. Here, part of the exhaust gases are drawn into the intake manifold and then into the combustion chamber of the engine returned to the combustion temperature and thus the NOx production to humiliate. If cooling of the exhaust gas is not desired, especially when the engine is started, the exhaust gas must pass the radiator or be bundled in such a way that cooling no longer takes place or only takes place marginally. This is achieved by means of a controllable bypass function, with the exhaust gas temporarily is redirected.

Aus der US 4 147 141 ist bekannt, diese Bypassfunktion durch eine separate Bypassrohrleitung zu bilden. Das beschriebene AGR-System umfasst ein AGR-Rohr, das das Abgasrohr mit dem Saugrohr des Motors verbindet. In dieses Rohr ist ein AGR-Kühler eingesetzt, der mit dem Bypassrohr umgangen werden kann. Gesteuert wird der Abgasstrom mittels eines Ventils, das sich an der Abzweigung zwischen dem Bypassrohr und dem AGR-Rohr mit integriertem Kühler befindet, wobei das bekannte System keine kompakte Baueinheit ist.From US 4 147 141, this bypass function is known through a separate bypass pipe to build. The described EGR system includes an EGR pipe that the Exhaust pipe connects to the intake manifold of the engine. In this tube is an EGR cooler used, which can be bypassed with the bypass tube. The exhaust gas flow is controlled by means of a valve located on the branch between the bypass pipe and the EGR pipe with an integrated cooler, the known system being none compact unit.

Aus der US 6 141 961 A ist eine Abgaswärmeübertragungseinrichtung bekannt, bei der Abgaswärme zum Erwärmen der Fahrgastzelle genutzt wird. Die Übertragungseinrichtung umfasst zwei parallel nebeneinander verlaufende Rohre, ein Hauptrohr und einen Umleitungskanal, der mit einem Wärmetauscher versehen ist. Die Regulierung des Gasstroms, der in den Wärmetauscher fließt, wird mittels einer Klappe erreicht.An exhaust gas heat transfer device is known from US Pat. No. 6,141,961 the exhaust gas heat is used to heat the passenger compartment. The transmission facility comprises two parallel pipes, one main pipe and a bypass duct provided with a heat exchanger. The regulation of the gas flow that flows into the heat exchanger is achieved by means of a flap.

Nach der aus der DE 199 62 863 A1 bekannten Lösung ist der Bypass in den Wärmeübertragungsbereich bzw. den Kühler integriert. Das beschriebene Wärmetauschersystem dient dazu, während der Warmlaufphase des Motors die Wärme des Abgases zu nutzen, um eine ausreichende und schnelle Beheizung des Fahrzeuginnenraumes sicher zustellen. Über einen Wärmetauscher soll dem Abgas Wärme entzogen und dem Kühlkreislauf des Motors zugeführt werden, um damit eine Aufheizung des Kühlkreislaufs mit einem daran angeschlossenen Heizkörper für den Fahrzeuginnenraum zu beschleunigen. Ein solcher Wärmeübertrager umfasst ein Gehäuse mit einem Abgaseintritts- und einem Abgasaustrittsbereich und einem Wärmeübertragungsbereich, wobei in den Wärmeübertragungsbereich ein Bypasskanal integriert ist. Mittels eines Stellelementes, das aus einem einseitig fest eingespannten und verstellbaren Blech besteht, können entweder der Bypasskanal oder der Wärmeübertragungsbereich abgedichtet oder Zwischenstellungen eingestellt werden. Ein solches Stellelement in Form eines verstellbaren Blechs eignet sich allerdings nicht dazu, eine Steuerung des Abgasflusses in einer Ausführung eines Wärmeübertragungsbereichs mit einem nicht randnahen Bypass zu übernehmen.According to the solution known from DE 199 62 863 A1, the bypass is in the heat transfer area or integrated the cooler. The heat exchanger system described serves to heat the exhaust gas during the warm-up phase of the engine to be used to adequately and quickly heat the vehicle interior deliver safely. Heat is extracted from the exhaust gas via a heat exchanger be fed to the cooling circuit of the engine, thereby heating the cooling circuit with an attached radiator for the vehicle interior to accelerate. Such a heat exchanger comprises a housing with an exhaust gas inlet and an exhaust gas outlet area and a heat transfer area, a bypass channel being integrated in the heat transfer area. By means of a Control element, which is made of a one-sided clamped and adjustable sheet exists, either the bypass duct or the heat transfer area can be sealed or intermediate positions can be set. Such an actuator in However, the shape of an adjustable plate is not suitable for controlling the Exhaust gas flow in one embodiment of a heat transfer area with one not Bypass close to the edge.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zur Wärmeübertragung zwischen dem Abgas eines Verbrennungsmotors und einem Kühlmittel, insbesondere einen geregelten AGR-Kühler, mit einer einfach und sicher arbeitenden Abgaströmungsregelung bei gleichzeitig kompakter Bauweise und unabhängig von der Anordnung des Bypasskanals im Wärmeübertragungsbereich zu schaffen.Proceeding from this, the object of the invention is to provide a device for Heat transfer between the exhaust gas of an internal combustion engine and one Coolant, especially a regulated EGR cooler, with a simple and safe working exhaust gas flow control with a compact design and independent from the arrangement of the bypass duct in the heat transfer area create.

Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterentwicklungen sind in den Unteransprüchen beschrieben.This object is achieved by a device with the features of claim 1. Advantageous further developments are described in the subclaims.

Kerngedanke der Erfindung ist, als Stellelement zur Regelung des Abgasstroms und wahlweisen Abgas-Kühlung eine Kugel zu verwenden. Sie ist entweder im Abgaseintrittsbereich vor der Eintrittsöffnung des Bypasskanals oder analog im Abgasaustrittsbereich nach der Austrittsöffnung des Bypasskanals angeordnet. Die Strömungsregelung wird durch Drehen der Kugel zwischen einer ersten und einer zweiten Drehstellung erreicht. Die Kugel ist so konstruiert, dass in der ersten Kugeldrehstellung der Bypasskanal geöffnet ist und gleichzeitig eine Strömung durch den Wärmeübertragungsbereich verhindert wird. In der zweiten Kugeldrehverbindung verschließt die Kugel den Bypasskanal und lässt einen Durchfluss des Abgases durch den Wärmeübertragungsbereich zu. Hierzu weist die Kugel einen zentralen Durchflusskanal auf. Dieser steht in der ersten Kugeldrehstellung mit der Öffnung des Bypasskanals in Strömungsverbindung. Gleichzeitig wird durch den Kugelkörper die Strömung des Abgases in bzw. aus dem Wärmeübertragungsbereich verhindert. Des Weiteren weist die Kugel radial in ihrem äußeren Kugelbereich, und zwar außerhalb des Durchflusskanals, mindestens einen Durchströmungsbereich auf. Dieser verläuft quer, vorzugsweise im rechten Winkel, zu dem Durchflusskanal. In der zweiten Drehstellung wird über den Kugelkörper der Bypasskanal verschlossen, während Abgas über den äußeren Durchströmungsbereich in den bzw. aus dem Wärmeübertragungsbereich geleitet wird. Zudem sind auch Zwischenstellungen zwischen diesen beiden Endstellungen möglich.The core idea of the invention is as an adjusting element for regulating the exhaust gas flow and optional exhaust gas cooling to use a ball. It is either in the exhaust gas inlet area in front of the inlet opening of the bypass duct or analogously in the exhaust gas outlet area arranged after the outlet opening of the bypass channel. The flow control is done by rotating the ball between a first and a second rotating position reached. The ball is constructed so that in the first ball turning position the Bypass channel is open and at the same time a flow through the heat transfer area is prevented. The ball closes in the second ball slewing ring the bypass channel and allows the exhaust gas to flow through the heat transfer area to. For this purpose, the ball has a central flow channel. This is in flow connection with the opening of the bypass channel in the first ball rotation position. At the same time, the flow of the exhaust gas through the spherical body prevented in or out of the heat transfer area. Furthermore, the Ball radially in its outer sphere area, namely outside the flow channel, at least one flow area. This runs across, preferably at right angles to the flow channel. In the second rotary position, over the spherical body of the bypass channel is closed, while exhaust gas flows through the outer Flow area in or out of the heat transfer area becomes. There are also intermediate positions between these two end positions possible.

Die Kugel kann hierbei auch bei hohen Stückzahlen reproduzierbar hergestellt werden und erlaubt eine sichere und schnelle Steuerung der Abgasströme. Das Stellelement befindet sich entweder im Abgaseintritts- oder im Abgasaustrittsbereich, wobei für die Strömungssteuerung nur die Kugel und kein weiterer Verschluss am jeweils anderen Ende des Bauteils notwendig ist. The ball can be produced reproducibly even with large quantities and allows safe and fast control of the exhaust gas flows. The actuator is either in the exhaust gas inlet or in the exhaust gas outlet area, whereby for the Flow control only the ball and no other closure on the other End of the component is necessary.

In der ersten Kugeldrehstellung wird durch den Kugelkörper selbst verhindert, dass Abgas durch den Wärmeübertragungsbereich strömt. Dies wird dadurch erreicht, dass der Kugelkörper an der Gehäuseinnenwandung des Abgaseintrittsbereichs bzw. des Abgasaustrittsbereichs abdichtend zur Anlage kommt. Das bedeutet, dass an dieser Stelle der Durchmesser des Eintritts- oder Austrittsbereichs dem lichten Durchmesser der Kugel entspricht.In the first ball turning position, the ball body itself prevents Exhaust gas flows through the heat transfer area. This is achieved in that the spherical body on the inner wall of the exhaust gas inlet area or Exhaust outlet area comes to the plant sealing. That means at this Place the diameter of the entry or exit area in the clear diameter corresponds to the ball.

Nach einer bevorzugten Ausführungsform der Erfindung sind die jeweiligen Durchströmungsbereiche im äußeren Bereich der Kugel als Nuten ausgebildet. Nach einer anderen Ausführungsform ist es ebenfalls möglich, dass diese Durchströmungsbereiche in die Kugel in deren äußeren Bereich eingebohrt sind. Wichtig ist nur, dass die Kugel neben dem mittigen Durchflusskanal radial in einem äußeren Kugelbereich weitere Durchströmungsbereiche, beispielsweise Bohrungen oder nach außen offene Nuten, aufweist.According to a preferred embodiment of the invention, the respective flow areas are formed as grooves in the outer region of the ball. After a another embodiment, it is also possible that these flow areas are drilled into the ball in the outer area. It is only important that the Ball next to the central flow channel radially in an outer ball area Flow areas, for example bores or open to the outside Grooves.

Die Nut-Lösung wird dadurch weitergebildet, dass in die Kugel auf solche Weise Nuten von außen eingebracht sind, dass ein zwischen den Nuten ausgebildetes Kugelsegment, insbesondere ein Kugelmittensegment, verbleibt. Dieses übernimmt die Abdichtungsfunktion an der Gehäuseinnenwandung, um zu verhindern, dass Abgas durch den Wärmeübertragungsbereich in der ersten Drehstellung strömt.The groove solution is further developed by grooves in the ball in this way are introduced from the outside that a spherical segment formed between the grooves, in particular a spherical center segment remains. This takes over the sealing function on the housing inner wall to prevent exhaust gas flows through the heat transfer area in the first rotational position.

Die Kugel nach der Erfindung wird beispielsweise durch mechanische Bearbeitung einer metallischen Vollkugel hergestellt. Die Nuten werden von außen in die Kugel eingefräst. Der mittige Durchflusskanal wird in den Kugelkörper eingebohrt. Eine alternative Herstellung ist das Kaltfließpressen, wobei ggfs. das Pressen des Durchflusskanals und der Nuten in zwei Schritten durchgeführt wird.The ball according to the invention is, for example, by mechanical processing a metallic solid sphere. The grooves are from the outside in the ball milled. The central flow channel is drilled into the spherical body. An alternative Manufacturing is cold extrusion, where appropriate pressing the flow channel and the grooving is carried out in two steps.

Die Kugel ist in ihrer Drehposition vor oder nach dem Bypasskanal durch eine mit dem Kugelkörper verbundene Stange oder Welle gelagert, um die auch gedreht wird. Die Stange ragt über die Gehäusewandung des Eintritts- oder Austrittsbereichs hinaus und wird durch entsprechende Stellmittel rotiert. The ball is in its rotational position before or after the bypass channel through one with the Spherical rod or shaft connected to which is also rotated. The The rod protrudes beyond the housing wall of the entry or exit area and is rotated by appropriate actuating means.

Für die Strömungsführung des Abgases in den Abgaseintrittsbereich ist auf die Gehäusewandung des Eintrittsbereichs ein Anschlussstück aufgesetzt, das die Kugel teilweise umgibt. Auf der anderen Seite nimmt es das Abgas zuführende Rohr auf. Analoges gilt für den Abgasaustrittsbereich.For the flow guidance of the exhaust gas in the exhaust gas inlet area is on the housing wall a connection piece is placed on the entrance area, which the ball partially surrounds. On the other hand, it takes up the exhaust pipe. The same applies to the exhaust gas outlet area.

Das vorgeschlagene Stellelement in Form einer Kugel erlaubt die flexible Anordnung des Bypasskanals in den Wärmeübertragungsbereich. Der Bypasskanal kann zentral integriert sein, er kann beispielsweise auch randnah oder unmittelbar am Rand des Wärmeübertragungsbereichs angeordnet sein. Die Kugel wird dann entsprechend angeordnet und der dafür notwendige Raum durch Anpassung des Abgaseintritts- oder - austrittsbereichs geschaffen.The proposed control element in the form of a ball allows flexible arrangement the bypass duct in the heat transfer area. The bypass channel can be central be integrated, it can for example also close to the edge or directly on the edge of the Heat transfer area may be arranged. The ball is then arranged accordingly and the space required for this by adjusting the exhaust gas inlet or - exit area created.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und aus der nachfolgenden Beschreibung, in der die in den Figuren dargestellte Ausführungsform der Erfindung näher erläutert werden. Es zeigen:

Fig. 1
den Längsschnitt durch einen AGR-Kühler mit einem Kugel-Stellelement;
Fig. 2
die einlassseitige Ansicht auf den AGR-Kühler mit der Kugel in der ersten Kugeldrehstellung;
Fig. 3
die Ansicht nach Fig. 2 mit der Kugel in der zweiten Kugeldrehstellung;
Fig. 4
die Ansicht nach Fig. 2 mit einem Anschlussstück.
Further details and advantages of the invention emerge from the subclaims and from the following description, in which the embodiment of the invention illustrated in the figures is explained in more detail. Show it:
Fig. 1
the longitudinal section through an EGR cooler with a ball adjusting element;
Fig. 2
the intake-side view of the EGR cooler with the ball in the first ball rotation position;
Fig. 3
the view of Figure 2 with the ball in the second ball rotation position.
Fig. 4
the view of FIG. 2 with a connector.

Fig. 1 zeigt einen Abgaskühler 1, wie er in einem AGR-System zur Anwendung kommen kann. Der Abgaskühler 1 kann einteilig aus einem Wärmeübertragungsbereich und einem sich daran jeweils endseitig anschließenden Abgaseintritts- und Abgasaustrittsbereich, welche von einem gemeinsamen Gehäuse umschlossen sind, ausgebildet sein. Bei der gezeigten mehrteiligen Ausführung besteht er aus dem Wärmeübertragungsbereich 2, mit dem der Abgaseintrittsbereich 3, der nachfolgend als Diffusor bezeichnet wird, sowie der Abgasaustrittsbereich 4 bzw. deren Gehäusewandungen 5, 6 verbunden sind. In den Wärmeübertragungsbereich 2 ist bei dieser Ausführungsform zentral ein Bypasskanal 7 angeordnet. 1 shows an exhaust gas cooler 1 as used in an EGR system can. The exhaust gas cooler 1 can be in one piece from a heat transfer area and an exhaust gas inlet and exhaust gas outlet area adjoining it at the ends, which are enclosed by a common housing his. In the multi-part design shown, it consists of the heat transfer area 2, with which the exhaust gas inlet area 3, which is subsequently used as a diffuser is referred to, as well as the exhaust gas outlet area 4 or its housing walls 5, 6 are connected. In the heat transfer area 2 is in this embodiment centrally arranged a bypass channel 7.

Für den Wärmeübertragungsbereich 2 sind innerhalb eines Gehäuses parallel angeordnete Rohre 8 an Lochbleche 9 gelötet, die den Wärmeübertragungsbereich 2 endseitig abschließen. Durch den Wärmeübertragungsbereich 2 fließt Kühlmittel, was durch entsprechende Stutzen 10, 11 eintritt bzw. austritt. Das Kühlmittel umfließt die Rohre 8.For the heat transfer area 2 are arranged in parallel within a housing Tubes 8 soldered to perforated sheets 9, the ends of the heat transfer area 2 to lock. Coolant flows through the heat transfer region 2, which enters or exits through corresponding nozzles 10, 11. The coolant flows around the Tubes 8.

Der Bypasskanal 7 selbst ist ein Rohr mit rundem Querschnitt, welches luftspaltisoliert mit Schiebesitz innerhalb des Wärmeübertragungsbereichs 2 angeordnet ist, indem es ebenfalls an die Lochbleche 9 gelötet wird. Dies hat den Vorteil, dass der Bypasskanal 7 als zylindrisches Rohr einfach integriert werden kann, andererseits kann die gleiche Fertigungstechnologie wie bei den Rohren 8 genutzt werden.The bypass duct 7 itself is a tube with a round cross section, which insulates the air gap with a sliding fit within the heat transfer area 2 is arranged by is also soldered to the perforated plates 9. This has the advantage that the bypass channel 7 can be easily integrated as a cylindrical tube, on the other hand, the same Manufacturing technology as the tubes 8 are used.

Die Gehäusewandungen 5, 6 des Diffusors 3 bzw. des Abgasaustrittsbereichs 4 sind zum Ein- und Auslass (E, A) verjüngend ausgebildet und enden in einem Anschlussstück 12, 13. Das Anschlussstück 12, 13 nimmt das Rohr (nicht gezeigt), das das Abgas AG heran- bzw. weiter zu dem Saugrohr des Motors transportiert, auf.The housing walls 5, 6 of the diffuser 3 and the exhaust gas outlet area 4 are tapered towards the inlet and outlet (E, A) and end in a connector 12, 13. The connector 12, 13 takes the pipe (not shown) containing the exhaust gas AG transported to or further to the intake manifold of the engine.

Innerhalb des Diffusors 3 ist zur Steuerung der Abgasströme durch den Wärmeübertragungsbereich 2 oder den Bypasskanal 7 eine Kugel 14 bzw. ein kugelförmiges Stellelement drehbar angeordnet. Die Kugel 14 befindet sich unmittelbar vor der Eintrittsöffnung 15 des Bypasskanals 7.Inside the diffuser 3 is to control the exhaust gas flows through the heat transfer area 2 or the bypass channel 7 a ball 14 or a spherical Adjusting element rotatably arranged. The ball 14 is located directly in front of the inlet opening 15 of the bypass channel 7.

Die Ausbildung und Funktionsweise der Kugel 14 wird aus den Fig. 2, 3 und 4 ersichtlich. Diese zeigen den Wärmeübertragungsbereich 2 mit davor angeordneter Kugel 14 ohne Gehäusewandung des Diffusors. Die Kugel 14 weist einerseits einen zentralen Durchflusskanal 16 bzw. eine Zentralbohrung mit durch den Kugelkörper gleichmäßigem Durchmesser auf. Der Durchmesser des Durchflusskanals 16 entspricht dem Durchmesser der Eintrittsöffnung 15 des Bypasskanals 7. Andererseits sind in ihrem äußeren Kugelbereich - außerhalb des Durchflusskanals 16 - vier Durchströmungsbereiche 17 in Form von Nuten eingebracht. Die Nuten bzw. eingeschnittenen Vertiefungen oder auch spaltförmigen Einkerbungen verlaufen bei der gezeigten Ausführungsform senkrecht zu dem zentralen Durchflusskanal 16. Sie können, wenn dies notwendig sein sollte, auch ggfs. leicht schräg verlaufen.The design and operation of the ball 14 can be seen in FIGS. 2, 3 and 4. These show the heat transfer area 2 with the ball 14 arranged in front of it without housing wall of the diffuser. The ball 14 has a central one Flow channel 16 or a central bore with a uniform through the spherical body Diameter on. The diameter of the flow channel 16 corresponds to that Diameter of the inlet opening 15 of the bypass channel 7 outer spherical area - outside the flow channel 16 - four flow areas 17 introduced in the form of grooves. The grooves or indentations or also slot-shaped notches run in the embodiment shown perpendicular to the central flow channel 16. You can if necessary should also be slightly inclined.

Für die Funktion der Kugel reicht grundsätzlich ein einziger Durchströmungsbereich aus. Es können auch zwei, drei oder wie gezeigt vier oder ggfs. mehr Nuten vorgesehen sein. Es ist nur wichtig, dass neben einem Durchströmungsbereich auch ein Kugelsegment zur Verhinderung der Strömung in der anderen Kugeldrehstellung verbleibt, welches an der Gehäuseinnenwandung des Diffusors oder ggfs. dem Anschlussstück dicht zur Anlage kommt. Bei der gezeigten Ausführungsform sind vier Nuten aus dem Kugel-Vollkörper spaltförmig so herausgearbeitet, dass senkrecht zum Durchflusskanal 16 ein scheibenförmiges Kugelmittensegment 18 mit ursprünglichem Kugeldurchmesser verbleibt. An diesem Kugelmittensegment 18 ist eine Verstellstange 19 oder -welle angeordnet, über die die Kugel 14 um ihre Drehachse, die senkrecht zur Bypasskanalrichtung verläuft, verstellbar ist. Über diese Verstellstange 19 ist die Kugel 14 auch gelagert.A single flow area is basically sufficient for the function of the ball out. Two, three or, as shown, four or possibly more grooves can also be provided his. It is only important that in addition to a flow area also a spherical segment remains in the other ball turning position to prevent flow, which on the inside wall of the diffuser or, if necessary, the connector comes close to the system. In the embodiment shown there are four Grooves are machined from the spherical solid body so that they are perpendicular to the Flow channel 16 a disc-shaped spherical center segment 18 with the original Ball diameter remains. On this ball center segment 18 is an adjustment rod 19 or shaft arranged over which the ball 14 about its axis of rotation, which is perpendicular runs to the bypass channel direction, is adjustable. About this adjustment rod 19 is the Ball 14 also stored.

In der ersten Drehstellung ist die Kugel 14 so gedreht, dass der Austritt des Durchflusskanals 16 an der Eintrittsöffnung 15 des Bypasskanals 7 anliegt. Das dem Kugeldurchmesser entsprechende Kugelmittensegment 18 liegt in dieser Stellung bündig an einer entsprechend ausgebildeten Gehäusewandung 5 des Diffusors an, wie dies aus Fig. 1 erkennbar ist. Das Abgas (AG), das durch das (nicht gezeigte) Rohr und das Anschlussstück 12 eingeführt wird, wird durch dieses Kugelmittensegment 18 an einem Eintritt in den Wärmeübertragungsbereich 2 gehindert. Das gesamte Abgas AG fließt durch den Durchflusskanal 16 in den Bypasskanal 7. Da dieser gegenüber dem Wärmeübertragungsbereich 2 isoliert ist, wird das Abgas AG in dieser ersten Stellung nicht gekühlt.In the first rotational position, the ball 14 is rotated so that the flow channel emerges 16 abuts the inlet opening 15 of the bypass channel 7. That the ball diameter corresponding spherical center segment 18 lies flush in this position a correspondingly designed housing 5 of the diffuser on how this Fig. 1 can be seen. The exhaust gas (AG) through the pipe (not shown) and the Connector 12 is inserted through this ball center segment 18 on one Entry into the heat transfer area 2 prevented. The entire exhaust AG flows through the flow channel 16 into the bypass channel 7 Heat transfer area 2 is isolated, the exhaust gas AG in this first position not chilled.

Wenn nun eine Kühlung des Abgases stattfinden soll, wird die Kugel 14 über Stellmittel (nicht gezeigt), die an der Verstellstange 19 angreifen, in die zweite Stellung gedreht, wie dies in Fig. 3 und 4 gezeigt ist. In dieser Stellung ist der Bypasskanal 7 durch die Kugelform dicht verschlossen. Die Nuten sind nur so tief in den Kugelkörper eingearbeitet, dass der verbleibende mittige Kugelteil den Bypasskanal 7 verschließt. If cooling of the exhaust gas is to take place, the ball 14 is actuated (not shown), which engage on the adjusting rod 19, rotated into the second position, as shown in Figs. 3 and 4. The bypass channel 7 is in this position tightly sealed by the spherical shape. The grooves are only so deep in the spherical body incorporated that the remaining central spherical part closes the bypass channel 7.

Das Abgas AG fließt in diesem Fall durch das Anschlussstück 12 über die Durchströmungsbereiche 17 bzw. Nuten der Kugel 14 in den Diffusor 3 und von dort in das Rohrbündel des Wärmeübertragungsbereichs 2, wo es am vorbei fließenden Kühlmittel abgekühlt wird.In this case, the exhaust gas AG flows through the connector 12 via the flow areas 17 or grooves of the ball 14 in the diffuser 3 and from there into the Pipe bundle of the heat transfer area 2, where there is coolant flowing past is cooled.

Die vorliegende Vorrichtung kann neben dem Einsatz in AGR-Systemen auch in der Abgasanlage in Strömungsrichtung vor einem Katalysator zur Einstellung eines Temperaturfensters Verwendung finden. In addition to being used in EGR systems, the present device can also be used in the Exhaust system in the flow direction in front of a catalytic converter for setting a temperature window Find use.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Abgaskühlerexhaust gas cooler
22
WärmeübertragungsbereichHeat transfer area
33
Abgaseintrittsbereich oder DiffusorExhaust gas inlet area or diffuser
44
AbgasaustrittsbereichExhaust outlet area
55
Gehäusewandung des DiffusorsHousing wall of the diffuser
66
Gehäusewandung des AbgasaustrittsbereichsHousing wall of the exhaust gas outlet area
77
Bypasskanalbypass channel
88th
Rohre für das Abgas im WärmeübertragungsbereichPipes for the exhaust gas in the heat transfer area
99
Lochblecheperforated sheets
1010
StutzenSupport
1111
StutzenSupport
1212
Anschlussstückconnector
1313
Anschlussstückconnector
1414
KugelBullet
1515
Eintrittsöffnung des BypasskanalsEntry opening of the bypass channel
1616
Durchflusskanal durch KugelFlow channel through ball
1717
Durchströmungsbereich oder Nut der KugelFlow area or groove of the ball
1818
KugelmittensegmentBall center segment
1919
Verstellstangecontrol rod
AGAG
Abgasexhaust
Ee
Einlassinlet
AA
Auslassoutlet

Claims (9)

Vorrichtung zur Wärmeübertragung zwischen dem Abgas (AG) eines Verbrennungsmotors und einem Kühlmittel, insbesondere ein Abgaskühler (1) bei der Abgasrückführung zu einem Verbrennungsmotor, mit einem von einer Gehäusewandung (5, 6) umgebenen Abgaseintritts- (3) und einem Abgasaustrittsbereich (4) und einen dazwischen angeordneten Wärmeübertragungsbereich (2) und mit einem in den Wärmeübertragungsbereich (2) integrierten Bypasskanal (7) sowie einem Stellelement zur Steuerung der Abgasströme durch den Wärmeübertragungsbereich (2) oder den Bypasskanal,
dadurch gekennzeichnet, dass im Abgaseintritts- (3) oder im Abgasaustrittsbereich (4) als Stellelement eine Kugel (14) drehbar vor der Eintritts- (15) oder nach der Austrittsöffnung des Bypasskanals (7) angeordnet ist,
dass die Kugel (14) einen Durchflusskanal (16) aufweist, der in einer ersten Kugeldrehstellung mit der Eintritts- (15) oder Austrittsöffnung des Bypasskanals (7) in Strömungsverbindung steht bei gleichzeitiger Verhinderung einer Strömung des Abgases (AG) durch den Wärmeübertragungsbereich aufgrund des Kugelkörpers, und
dass die Kugel (14) in einem äußeren Kugelbereich außerhalb des Durchflusskanals (16) mindestens einen Durchströmungsbereich (17) aufweist, der quer zu dem Durchflusskanal (16) verläuft und der in einer zweiten Kugeldreh-Stellung eine Strömung des Abgases (AG) durch den Wärmeübertragungsbereich (2) bei gleichzeitigem Verschluss des Bypasskanals (7) durch den Kugelkörper zulässt. Device for heat transfer between the exhaust gas (AG) of an internal combustion engine and a coolant, in particular an exhaust gas cooler (1) for exhaust gas recirculation to an internal combustion engine, with an exhaust gas inlet (3) and an exhaust gas outlet area (4) surrounded by a housing wall (5, 6) and a heat transfer area (2) arranged in between and with a bypass channel (7) integrated in the heat transfer area (2) and an actuating element for controlling the exhaust gas flows through the heat transfer area (2) or the bypass channel,
characterized in that a ball (14) is rotatably arranged in the exhaust gas inlet (3) or in the exhaust gas outlet area (4) as an adjusting element in front of the inlet (15) or after the outlet opening of the bypass channel (7),
that the ball (14) has a flow channel (16), which is in a first ball rotational position with the inlet (15) or outlet opening of the bypass channel (7) in flow connection while preventing flow of the exhaust gas (AG) through the heat transfer area due to the Spherical body, and
that the ball (14) in an outer ball area outside the flow channel (16) has at least one flow area (17) which runs transversely to the flow channel (16) and in a second ball rotation position a flow of the exhaust gas (AG) through the Allows heat transfer area (2) with simultaneous closure of the bypass channel (7) through the spherical body. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass in der ersten Kugeldrehstellung der Kugelkörper an der Innenseite der Gehäusewandung (5, 6) des Abgaseintritts- (3) oder Abgasaustrittsbereichs (4) abdichtend zur Anlage kommt.Device according to claim 1,
characterized in that in the first spherical rotational position the spherical body seals against the inside of the housing wall (5, 6) of the exhaust gas inlet (3) or exhaust gas outlet region (4). Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die jeweiligen Durchströmungsbereiche (17) im äußeren Bereich der Kugel (14) Nuten sind.Device according to claim 1 or 2,
characterized in that the respective flow areas (17) in the outer area of the ball (14) are grooves. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass der Kugelkörper mit einem nicht als Nut freigeschnittenen Segment, insbesondere einem Kugelmittensegment (18), an der Innenseite der Gehäusewandung (5, 6) des Abgaseintritts- (3) oder -austrittsbereichs (4) zur Anlage kommt.Device according to claim 3,
characterized in that the spherical body comes into contact with a segment which is not cut free as a groove, in particular a spherical center segment (18), on the inside of the housing wall (5, 6) of the exhaust gas inlet (3) or exhaust region (4). Vorrichtung nach Anspruch 3 oder 4,
dadurch gekennzeichnet, dass die Kugel (14) ein metallischer Vollkörper ist, in den von außen Nuten unter Bildung eines Kugelmittensegmentes (18) eingefräst sind und in den der quer zu den Nuten verlaufende Durchflusskanal (16) zentral eingebohrt ist.Device according to claim 3 or 4,
characterized in that the ball (14) is a solid metal body into which grooves are milled from the outside to form a ball center segment (18) and into which the flow channel (16) running transversely to the grooves is drilled centrally. Vorrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass die Kugel eine Verstellstange (19) aufweist, die mit Stellmitteln zusammenwirkt, über die sie um ihre Drehachse zwischen der ersten und zweiten Position drehbar ist, und dass die Kugel mittels dieser Verstellstange gelagert ist. Device according to one of claims 1 to 5,
characterized in that the ball has an adjusting rod (19) which interacts with adjusting means via which it can be rotated about its axis of rotation between the first and second positions, and in that the ball is supported by means of this adjusting rod. Vorrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass auf das einlass- oder auslassseitige Ende der Gehäusewandung (5, 6) des Abgaseintritts- (3) oder des Abgasaustrittsbereichs (4) ein Anschlussstück (12, 13) aufgesetzt ist, das auf seiner von dem Wärmeübertragungsbereich (2) wegweisenden Seite ein Abgas führendes Rohr aufnimmt.Device according to one of claims 1 to 6,
characterized in that a connection piece (12, 13) is placed on the inlet or outlet-side end of the housing wall (5, 6) of the exhaust gas inlet (3) or exhaust gas outlet area (4) which points away from the heat transfer area (2) Side receives an exhaust pipe. Vorrichtung nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass innerhalb des Wärmeübertragungsbereichs (2) parallel angeordnete Rohre (8) verlaufen, die zum Abgaseintrittsbereich (3) und Abgasaustrittsbereich (4) offen sind, die von dem Abgas (AG) durchfließbar sind und die von dem Kühlmittel in dem mit Lochblechen (9) verschlossenen Wärmeübertragungsbereich (2) umflossen werden, und
dass der Bypasskanal (7) ein zylindrisches Rohr ist.Device according to one of claims 1 to 7,
characterized in that parallel pipes (8) run within the heat transfer area (2), which are open to the exhaust gas inlet area (3) and exhaust gas outlet area (4), through which the exhaust gas (AG) can flow and through which the coolant in the perforated plate (9) closed heat transfer area (2) can flow around, and
that the bypass channel (7) is a cylindrical tube. Vorrichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass der Bypasskanal (7) mittig oder seitlich im Wärmeübertragungsbereich (2) angeordnet ist.Device according to one of claims 1 to 8,
characterized in that the bypass channel (7) is arranged centrally or laterally in the heat transfer area (2).
EP04000419A 2003-03-04 2004-01-12 Heat transfer device between the exhaust gas of an internal combustion engine and a cooling fluid Expired - Lifetime EP1455079B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10309298A DE10309298B3 (en) 2003-03-04 2003-03-04 Exhaust gas cooling device for automobile IC engine has heat transfer region provided with integrated bypass channel controlled by rotary setting element
DE10309298 2003-03-04

Publications (3)

Publication Number Publication Date
EP1455079A2 true EP1455079A2 (en) 2004-09-08
EP1455079A3 EP1455079A3 (en) 2008-02-27
EP1455079B1 EP1455079B1 (en) 2009-03-11

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Application Number Title Priority Date Filing Date
EP04000419A Expired - Lifetime EP1455079B1 (en) 2003-03-04 2004-01-12 Heat transfer device between the exhaust gas of an internal combustion engine and a cooling fluid

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Country Link
EP (1) EP1455079B1 (en)
AT (1) ATE425352T1 (en)
DE (2) DE10309298B3 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
JP4925214B2 (en) * 2004-08-30 2012-04-25 ベール ゲーエムベーハー ウント コー カーゲー Valves, in particular rotary piston valves, exhaust recirculation systems with such valves
WO2012139978A3 (en) * 2011-04-13 2012-12-06 Emitec Gesellschaft Für Emissionstechnologie Mbh Device having a heat exchanger for a thermoelectric generator of a motor vehicle

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
DE102005039794B4 (en) * 2005-08-22 2010-06-10 J. Eberspächer GmbH & Co. KG Exhaust gas heat exchanger
DE102014106386B4 (en) * 2014-05-07 2016-08-11 Benteler Automobiltechnik Gmbh Exhaust gas heat exchanger with bypass pipe

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Publication number Priority date Publication date Assignee Title
EP0942156A1 (en) * 1998-03-11 1999-09-15 Ecia - Equipements Et Composants Pour L'industrie Automobile Exhaust heat exchanger device
EP1277945A1 (en) * 2001-07-18 2003-01-22 Cooper-Standard Automotive (Deutschland) GmbH Cooler of an EGR system and EGR system with such a cooler

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JPS5423825A (en) * 1977-07-22 1979-02-22 Toyota Motor Corp Exhaust gas recirculator
DE19962863B4 (en) * 1999-12-24 2013-09-19 Behr Gmbh & Co. Kg Heat exchanger

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Publication number Priority date Publication date Assignee Title
EP0942156A1 (en) * 1998-03-11 1999-09-15 Ecia - Equipements Et Composants Pour L'industrie Automobile Exhaust heat exchanger device
EP1277945A1 (en) * 2001-07-18 2003-01-22 Cooper-Standard Automotive (Deutschland) GmbH Cooler of an EGR system and EGR system with such a cooler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4925214B2 (en) * 2004-08-30 2012-04-25 ベール ゲーエムベーハー ウント コー カーゲー Valves, in particular rotary piston valves, exhaust recirculation systems with such valves
WO2012139978A3 (en) * 2011-04-13 2012-12-06 Emitec Gesellschaft Für Emissionstechnologie Mbh Device having a heat exchanger for a thermoelectric generator of a motor vehicle
US9279623B2 (en) 2011-04-13 2016-03-08 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Device having a heat exchanger for a thermoelectric generator of a motor vehicle and motor vehicle having the device

Also Published As

Publication number Publication date
ATE425352T1 (en) 2009-03-15
EP1455079A3 (en) 2008-02-27
DE502004009110D1 (en) 2009-04-23
EP1455079B1 (en) 2009-03-11
DE10309298B3 (en) 2004-08-19

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