ES2209618B1 - HEAT EXCHANGER FOR AN "EGR" SYSTEM WITH AN INTEGRATED DERIVATION CONDUCT. - Google Patents
HEAT EXCHANGER FOR AN "EGR" SYSTEM WITH AN INTEGRATED DERIVATION CONDUCT.Info
- Publication number
- ES2209618B1 ES2209618B1 ES200201218A ES200201218A ES2209618B1 ES 2209618 B1 ES2209618 B1 ES 2209618B1 ES 200201218 A ES200201218 A ES 200201218A ES 200201218 A ES200201218 A ES 200201218A ES 2209618 B1 ES2209618 B1 ES 2209618B1
- Authority
- ES
- Spain
- Prior art keywords
- heat exchanger
- bypass duct
- housing
- egr system
- bypass
- 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.)
- Expired - Fee Related
Links
- 238000009795 derivation Methods 0.000 title 1
- 239000007789 gas Substances 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 239000003507 refrigerant Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 230000004308 accommodation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
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- 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
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- 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
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
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- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Intercambiador de calor para un sistema "EGR" con un conducto de derivación integrado. Se propone un intercambiador de calor para gases de escape recirculados de un motor de combustión interna con un tubo de derivación integrado por el que puedan recircular los gases de escape durante el arranque del motor y/o en condiciones de baja temperatura o carga. El intercambiador está formado por una carcasa cilíndrica en cuyo interior se dispone tanto la cámara de refrigeración típica de estos dispositivos como el conducto de derivación. Como medio de acoplamiento al dispositivo de entrada de gases del sistema EGR, se utiliza una brida con un alojamiento para los tubos refrigerantes de la cámara de refrigeración y otro alojamiento para el conducto de derivación, existiendo entre dichos alojamientos una zona de separación. El conducto de derivación puede ser un conducto de doble pared con una cámara de aire intermedia para evitar el enfriamiento de los gases que circulan por él.Heat exchanger for an "EGR" system with an integrated bypass duct. A heat exchanger is proposed for recirculated exhaust gases of an internal combustion engine with an integrated bypass pipe through which exhaust gases can be recirculated during engine start-up and / or in low temperature or load conditions. The exchanger is formed by a cylindrical housing inside which both the typical cooling chamber of these devices and the bypass duct are arranged. As a means of coupling to the gas inlet device of the EGR system, a flange with a housing for the cooling tubes of the refrigeration chamber and another housing for the bypass conduit is used, there being a separation zone between said housings. The bypass duct can be a double-walled duct with an intermediate air chamber to prevent cooling of the gases flowing through it.
Description
Intercambiador de calor para un sistema "EGR" con un conducto de derivación integrado.Heat exchanger for a system "EGR" with an integrated bypass duct.
La presente invención se refiere a un intercambiador de calor para un sistema de recirculación de gases de escape (EGR) de un motor de combustión interna y, más particularmente, a un intercambiador de calor con un conducto de derivación integrado.The present invention relates to a heat exchanger for a gas recirculation system Exhaust (EGR) of an internal combustion engine and, more particularly, to a heat exchanger with a conduit of integrated bypass.
En la técnica actual se conocen diversos sistemas de recirculación de gases de escapes en motores de combustión interna a los que se llama sistemas EGR.Various systems are known in the current art of recirculation of exhaust gases in combustion engines internal to what is called EGR systems.
Estos sistemas recirculan gases de escape desde el colector de escape hacia el colector de admisión del motor tras someterlos a un proceso de enfriamiento, con el fin de reducir la cantidad de emisiones de NOx.These systems recirculate exhaust gases from the exhaust manifold to the engine intake manifold after subject them to a cooling process, in order to reduce the NOx emission amount.
Como en ciertas condiciones de funcionamiento del motor no resulta conveniente el enfriamiento de los gases de escape, se ha propuesto en la técnica utilizar conductos de derivación que permitan la recirculación de gases de escape sin pasar por el intercambiador de calor, bajo el gobierno de una válvula que canaliza los gases de escape bien hacia el intercambiador de calor, bien hacia el mencionado conducto de derivación, según unas condiciones preestablecidas.As in certain operating conditions of the engine is not convenient cooling of gases from exhaust, it has been proposed in the art to use ducts bypass that allow the recirculation of exhaust gases without go through the heat exchanger, under the rule of a valve that channels the exhaust gases well towards the heat exchanger, either towards said conduit of referral, according to pre-established conditions.
Una de esas propuestas es la descrita en la patente US 4,147,141 que describe un sistema EGR con un conducto de derivación paralelo al intercambiador de calor y una válvula EGR que mantiene cerrado el módulo hasta que la temperatura del motor alcanza un cierto valor predeterminado y que, una vez abierta, dirige los gases de escape hacia el conducto de derivación cuando su temperatura es inferior a cierto límite y al intercambiador de calor en caso contrario.One of these proposals is the one described in the US Patent 4,147,141 describing an EGR system with a conduit of bypass parallel to the heat exchanger and an EGR valve which keeps the module closed until the engine temperature reaches a certain predetermined value and that, once opened, directs the exhaust gases to the bypass duct when its temperature is below a certain limit and the heat exchanger of heat otherwise.
Otra propuesta es la descrita en la patente US 5,203,311 que incluye una primera válvula de control en el conducto de derivación y una segunda válvula en el intercambiador de calor.Another proposal is that described in US Pat. 5,203,311 which includes a first control valve in the duct bypass and a second valve in the heat exchanger hot.
Otra propuesta es la descrita en la patente US 5,617,726 en la que se usa un conducto de derivación de manera diferente según las circunstancias de carga del motor y sus componentes.Another proposal is that described in US Pat. 5,617,726 in which a bypass conduit is used so different depending on the circumstances of loading the engine and its components.
Otra propuesta es la descrita en la solicitud de patente WO 02/10574 que incluye un intercambiador de calor para gases de escape con una cámara refrigerante, un conducto de derivación y unos medios para dirigir los gases de escape bien hacia la cámara refrigerante, bien hacia el conducto de derivación y en la que esos componentes están debidamente integrados para formar una unidad que puede montarse fácilmente en el motor.Another proposal is that described in the request for WO 02/10574 patent that includes a heat exchanger for exhaust gases with a cooling chamber, a duct bypass and a means to direct exhaust gases well towards the cooling chamber, either towards the bypass duct and in which those components are properly integrated to form a unit that can be easily mounted on the engine.
La industria del automóvil demanda mejoras de los sistemas EGR conocidos para atender diversas necesidades. Una de ella viene motivada por crecientes exigencias de las regulaciones administrativas sobre los límites admisibles de las emisiones de NOx. Otra necesidad a satisfacer es facilitar el montaje de los motores de los automóviles simplificando el diseño de sus componentes para mejorar su capacidad de integración.The automobile industry demands improvements in EGR systems known to meet various needs. One of she is motivated by increasing demands of regulations administrative rules on the permissible limits of emissions from NOx Another need to satisfy is to facilitate the assembly of the car engines simplifying the design of their components to improve their ability to integrate.
La presente invención tiene por objeto proporcionar como elemento integrante de un sistema EGR un intercambiador de calor para gases de escape recirculados de un motor de combustión interna con un tubo de derivación integrado por el que puedan recircular los gases de escape durante el arranque del motor y/o en condiciones de baja temperatura o carga.The present invention aims at provide as an integral element of an EGR system a heat exchanger for recirculated exhaust gases from a internal combustion engine with a bypass pipe integrated by the one that can recirculate the exhaust gases during the start of the engine and / or in low temperature or load conditions.
Dicho en otras palabras, el problema que se propone resolver la presente invención es proporcionar un intercambiador de calor para gases de escape reciclado que incluya, en una misma unidad, tanto la cámara de refrigeración para el enfriamiento de los gases como un conducto de derivación por que el deben circular cuando no es necesario su enfriamiento y que esa unidad sea fácilmente integrable en el motor.In other words, the problem that is proposes to solve the present invention is to provide a heat exchanger for recycled exhaust gases including, in the same unit, both the cooling chamber for the gas cooling as a bypass duct because the they must circulate when cooling is not necessary and that unit is easily integrated into the engine.
De acuerdo con la invención, el intercambiador está formado por una carcasa cilíndrica en cuyo interior se disponen la cámara de refrigeración constituida, de manera conocida, por una pluralidad de tubos por los que circula un liquido refrigerante (a los que llamaremos, en adelante, tubos refrigerantes) y un tubo de derivación.According to the invention, the exchanger It is formed by a cylindrical housing inside which they have the cooling chamber constituted, so known, for a plurality of tubes through which a coolant (which we will call, hereinafter, tubes refrigerants) and a bypass tube.
En el lado de entrada de los gases de la carcasa y como medio de acoplamiento al dispositivo de entrada de gases del sistema EGR se dispone una brida con un alojamiento para los tubos refrigerantes de la cámara de refrigeración y otro alojamiento para el conducto de derivación, existiendo entre dichos alojamientos una zona de separación.On the inlet side of the housing gases and as a coupling means to the gas inlet device of the EGR system provides a flange with a housing for the tubes refrigerants of the refrigeration chamber and other housing for the bypass duct, existing between said housings A separation zone.
La forma de esos alojamientos está relacionada tanto con el reparto deseado de las áreas destinadas a la cámara de refrigeración y al conducto de derivación como a la forma de éste.The shape of these accommodations is related both with the desired distribution of the areas intended for the chamber of cooling and bypass duct as to how to East.
Tomando como referencia la sección circular interior de la carcasa cilíndrica, la forma preferente para dichos alojamientos sería la de dos segmentos circulares delimitados en dicha sección circular mediante una banda de separación, siendo el destinado a la cámara de refrigeración mayor que un semicírculo. Ahora bien, la presente invención también comprende otras formas y particularmente las ovaladas.Taking the circular section as a reference inside the cylindrical housing, the preferred form for said accommodation would be that of two circular segments delimited in said circular section by means of a separation band, the intended for the refrigeration chamber greater than a semicircle. However, the present invention also comprises other forms and particularly oval.
La banda o zona de separación mencionada actúa de medio de cierre del lado de entrada de gases del intercambiador en combinación con una válvula apropiada para abrir uno de los dos alojamientos mencionados y, simultáneamente, cerrar el otro, en función de las necesidades establecidas por el sistema EGR.The mentioned separation zone or band acts as closing means of the gas inlet side of the exchanger in combination with an appropriate valve to open one of the two mentioned accommodations and simultaneously close the other, in function of the needs established by the EGR system.
Una característica adicional de la invención es que la mencionada carcasa se cierra mediante tapones externos abrazando sus bordes para facilitar el montaje de los tubos refrigerantes y facilitar la realización de las soldaduras.An additional feature of the invention is that said housing is closed by external plugs hugging its edges to facilitate the assembly of the tubes refrigerants and facilitate welding.
La mencionada brida de acoplamiento al dispositivo de entrada de gases se soldaría al correspondiente tapón de la carcasa.The aforementioned coupling flange to the gas inlet device would be welded to the corresponding housing plug.
Otra característica adicional de la invención es que el mencionado conducto de derivación sea un conducto de doble pared con una cámara de aire intermedia.Another additional feature of the invention is that said bypass duct is a double duct wall with an intermediate air chamber.
Otras características y ventajas de la presente invención se desprenderán de la descripción detallada que sigue de una realización ilustrativa, y en ningún sentido limitativa, de su objeto en relación con los dibujos que se acompañan.Other features and advantages of this invention will follow from the detailed description that follows from an illustrative, and in no sense limiting, embodiment of its object in relation to the accompanying drawings.
La Figura 1 es una vista en perspectiva de un intercambiador de calor para gases de escape según la presente invención y la Figura 2 es una vista en perspectiva de un despiece ordenado de la misma.Figure 1 is a perspective view of a heat exchanger for exhaust gases according to the present invention and Figure 2 is a perspective view of an exploded view ordered of it.
La Figura 3 es una vista en planta de un intercambiador de calor para gases de escape según la presente invención.Figure 3 is a plan view of a heat exchanger for exhaust gases according to the present invention.
La Figura 4 es una vista de un intercambiador de calor para gases de escape según la presente invención por la sección BB de la Figura 3.Figure 4 is a view of a heat exchanger. heat for exhaust gases according to the present invention by the BB section of Figure 3.
La Figura 5 es una vista frontal de la brida del intercambiador de calor representado en las figuras anteriores.Figure 5 is a front view of the flange of the heat exchanger represented in the previous figures.
Las Figuras 6 y 7 son vistas frontales de variantes de realización de la brida del intercambiador de calor objeto de la presente invención.Figures 6 and 7 are front views of variants of the heat exchanger flange object of the present invention.
En un sistema EGR una parte de los gases de escape del motor sale al exterior a través del tubo de escape y otra parte se recircula. La cantidad a recircular está controlada por la válvula EGR, que, en determinadas circunstancias, p. ej, en una situación de máxima potencia, puede incluso estar cerrada y no recircular nada. Los gases recirculados se mezclan con el aire limpio y vuelven al motor a través del conducto de admisión.In an EGR system a part of the gases of engine exhaust goes outside through the exhaust pipe and Another part is recirculated. The amount to be recirculated is controlled by the EGR valve, which, under certain circumstances, p. eg in a situation of maximum power, may even be closed and not Recirculate anything. The recirculated gases mix with the air clean and return to the engine through the intake duct.
En los sistemas EGR que incluyen un conducto de derivación, los gases que se recirculan, pueden o no ser enfriados, en función de la posición de la correspondiente válvula.In EGR systems that include a conduit bypass, the gases that are recirculated, may or may not be cooled, depending on the position of the corresponding valve.
Para este tipo de sistemas EGR, la presente invención proporciona un intercambiador de calor con el conducto de derivación integrado.For this type of EGR systems, this invention provides a heat exchanger with the conduit of integrated bypass.
Siguiendo las Figuras 1 a 5 se observa que un intercambiador de calor 1 para gases de escape según la presente invención está formado por una carcasa cilíndrica 2 que alberga en su interior una cámara de refrigeración 3 constituida, de manera conocida en la técnica, por un conjunto de tubos interconectados 4 por los que circula un líquido refrigerante que entra por el conducto 5 y sale por el conducto 7 y un conducto 9 que actúa como conducto de derivación para que circulen por él aquellos gases de escape que no se desea refrigerar.Following Figures 1 to 5 it is observed that a heat exchanger 1 for exhaust gases according to the present invention is formed by a cylindrical housing 2 which houses in inside a cooling chamber 3 constituted, so known in the art, for a set of interconnected pipes 4 through which a coolant flows through the conduit 5 and exits through conduit 7 and a conduit 9 that acts as bypass conduit to circulate through it those gases of exhaust that you don't want to refrigerate.
La carcasa 2 se cierra por ambos lados por dos tapones 11 y 13 que sirven de medios de fijación de los tubos 4 y del tubo de derivación 9. Esos tapones abrazan a los bordes de la carcasa 2 lo que facilita el proceso de montaje de los tubos 4 y el proceso de soldadura.The housing 2 is closed on both sides by two plugs 11 and 13 that serve as fixing means for tubes 4 and of the bypass tube 9. These plugs hug the edges of the housing 2 which facilitates the assembly process of tubes 4 and the welding process.
El intercambiador de calor 1 para gases de escape según la presente invención se acopla con el dispositivo de entrada de gases (no representado) mediante la brida 15 en la que quedan delimitados un alojamiento 21 para los tubos refrigerantes 4 y un alojamiento 22 para el conducto de derivación 9.Heat exchanger 1 for exhaust gases according to the present invention is coupled with the input device of gases (not shown) by means of flange 15 where delimited a housing 21 for the refrigerant tubes 4 and a housing 22 for the bypass duct 9.
Una válvula apropiada (no representada), accionada por los correspondientes medios de gobierno, conduce los gases de escape hacia la cámara de refrigeración 3 o hacia el conducto de derivación 9.An appropriate valve (not shown), powered by the corresponding means of government, conducts exhaust gases towards the cooling chamber 3 or towards the bypass duct 9.
El acoplamiento del intercambiador de calor al colector de admisión de gases del motor se realizará utilizando medios convencionales como la brida 16, que puede ser igual que la brida 15 por razones de economía o proceso, ú otros medios conocidos en la técnica como un cono de reconducción más una brida o un cono de reconducción y un anillo.The heat exchanger coupling to engine gas intake manifold will be made using conventional means such as flange 16, which can be the same as flange 15 for reasons of economy or process, or other means known in the art as a reconduction cone plus a flange or a reconduction cone and a ring.
Siguiendo, en particular, las Figuras 4 y 5 se observa que las dimensiones de los alojamientos 21 y 22 de la brida 15 están íntimamente relacionados con las áreas dedicadas a la cámara de refrigeración 3 y al conducto de derivación 9. Así mismo puede apreciarse la presencia en la brida 15 de una zona de separación 23 de los alojamientos 21 y 22, relacionada con el espacio disponible entre los tubos refrigerantes 4 y el conducto de derivación resulta útil como medio de cierre, en combinación con la válvula mencionada. El primer alojamiento 21 tiene forma de segmento circular, de superficie algo mayor que un semicírculo de la carcasa 2 y el segundo alojamiento 22 también tiene forma de segmento circular, aunque con sus vértices redondeados. Entre ambos alojamientos se sitúa la zona de separación 23 con su tramo central delimitado por líneas rectas. En el primer alojamiento 21 se sitúan doce tubos 4 y en el alojamiento 22 el conducto de derivación 9 de una forma ovalada.Following, in particular, Figures 4 and 5 are note that the dimensions of the housing 21 and 22 of the flange 15 are closely related to the areas dedicated to cooling chamber 3 and the bypass duct 9. Likewise the presence in the flange 15 of an area of separation 23 of accommodations 21 and 22, related to the available space between the refrigerant tubes 4 and the duct bypass is useful as a means of closure, in combination with the mentioned valve. The first housing 21 has the form of circular segment, somewhat larger than a semicircle of the housing 2 and the second housing 22 is also in the form of circular segment, although with its rounded vertices. Between both accommodation is located separation zone 23 with its central section delimited by straight lines. In the first housing 21 they are located twelve tubes 4 and in the housing 22 the bypass conduit 9 of an oval shape
La Figuras 6 y 7 muestran bridas 18 y 19 en las que los dos alojamientos 21 y 22 tienen forma de segmento circular. En la primera, el conducto de derivación 9 tiene forma semicircular y en la segunda, tiene una forma ovalada. Podría tener así mismo forma circular y en cada caso habría un distinto grado de aprovechamiento del espacio delimitado por el alojamiento 22.Figures 6 and 7 show flanges 18 and 19 in the that the two housings 21 and 22 have a circular segment shape. In the first, the bypass conduit 9 has a semicircular shape and in the second, it has an oval shape. Could have same circular shape and in each case there would be a different degree of use of the space delimited by accommodation 22.
Como bien comprenderá el experto en la materia, el dimensionamiento de los alojamientos 21 y 22, del área de refrigeración, utilizando uno ú otro número y tipo de tubos refrigerantes 4, y del conducto de derivación 9, dependerá de las necesidades funcionales de cada caso. Así, por ejemplo, se elegirá para el conducto de derivación 9 la forma circular si se desea la mejor relación entre área de paso y superficie de intercambio para minimizar el intercambio de calor y se elegirá la forma de segmento circular de la Figura 6 si se desea aprovechar al máximo la superficie delimitada por el alojamiento 22 para minimizar las pérdidas de carga y, finalmente, se elegirá la forma ovalada de la Figura 7 si se desea una opción intermedia entre las anteriores.As the person skilled in the art will understand, the dimensioning of housings 21 and 22, of the area of cooling, using one or another number and type of tubes refrigerants 4, and bypass conduit 9, will depend on the functional needs of each case. Thus, for example, it will be chosen for the bypass duct 9 the circular shape if desired better relationship between passage area and exchange surface for minimize heat exchange and the segment shape will be chosen circular of Figure 6 if you want to make the most of the surface delimited by housing 22 to minimize pressure losses and, finally, the oval shape of the Figure 7 if an intermediate option is desired among the previous ones.
La cámara de refrigeración 3 estará activa permanentemente puesto que la circulación de líquido refrigerante por los tubos 4 formará parte del circuito general de refrigeración del motor. Consecuentemente, se contempla la posibilidad de utilizar conductos de derivación 9 de doble pared con cámara de aire intermedia para asegurar que el enfriamiento de los gases que circulan por él no supera un valor predeterminado.The cooling chamber 3 will be active permanently since the coolant circulation through tubes 4 it will be part of the general circuit of engine cooling Consequently, the possibility of using double wall bypass pipes 9 with intermediate air chamber to ensure that the cooling of the gases that circulate through it does not exceed a predetermined value.
Respecto a las realizaciones descritas de la invención, pueden introducirse aquellas modificaciones comprendidas dentro del alcance definido por las siguientes reivindicaciones.Regarding the described embodiments of the invention, those modifications included can be introduced within the scope defined by the following claims.
Claims (8)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200201218A ES2209618B1 (en) | 2002-05-28 | 2002-05-28 | HEAT EXCHANGER FOR AN "EGR" SYSTEM WITH AN INTEGRATED DERIVATION CONDUCT. |
| DE60306717T DE60306717T3 (en) | 2002-05-28 | 2003-05-28 | Heat exchanger for an EGR system with integrated bypass line |
| AT03380127T ATE333046T1 (en) | 2002-05-28 | 2003-05-28 | HEAT EXCHANGER FOR AN EGR SYSTEM WITH INTEGRATED BYPASS LINE |
| ES03380127T ES2268306T5 (en) | 2002-05-28 | 2003-05-28 | THERMAL EXCHANGER FOR AN EGR SYSTEM WITH INTEGRATED DERIVATION CONDUCT. |
| EP03380127A EP1367253B2 (en) | 2002-05-28 | 2003-05-28 | Heat exchanger for an EGR system with an integrated by-pass duct. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200201218A ES2209618B1 (en) | 2002-05-28 | 2002-05-28 | HEAT EXCHANGER FOR AN "EGR" SYSTEM WITH AN INTEGRATED DERIVATION CONDUCT. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2209618A1 ES2209618A1 (en) | 2004-06-16 |
| ES2209618B1 true ES2209618B1 (en) | 2005-08-16 |
Family
ID=29414913
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200201218A Expired - Fee Related ES2209618B1 (en) | 2002-05-28 | 2002-05-28 | HEAT EXCHANGER FOR AN "EGR" SYSTEM WITH AN INTEGRATED DERIVATION CONDUCT. |
| ES03380127T Expired - Lifetime ES2268306T5 (en) | 2002-05-28 | 2003-05-28 | THERMAL EXCHANGER FOR AN EGR SYSTEM WITH INTEGRATED DERIVATION CONDUCT. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES03380127T Expired - Lifetime ES2268306T5 (en) | 2002-05-28 | 2003-05-28 | THERMAL EXCHANGER FOR AN EGR SYSTEM WITH INTEGRATED DERIVATION CONDUCT. |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1367253B2 (en) |
| AT (1) | ATE333046T1 (en) |
| DE (1) | DE60306717T3 (en) |
| ES (2) | ES2209618B1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE454538T1 (en) * | 2004-05-07 | 2010-01-15 | Behr Gmbh & Co Kg | HEAT EXCHANGER, ESPECIALLY FOR EXHAUST GAS COOLERS OF INTERNAL COMBUSTION ENGINES |
| DE102005040612A1 (en) * | 2005-08-27 | 2007-03-01 | Behr Gmbh & Co. Kg | Exhaust gas heat exchanger for exhaust gas recirculation system of internal combustion system, has bypass pipe, designed as high-grade steel pipe having jacket made of high temperature stable plastic, arranged in coolant flowing housing |
| ES2322728B1 (en) * | 2005-11-22 | 2010-04-23 | Dayco Ensa, S.L. | THREE-STEP HEAT EXCHANGER FOR AN "EGR" SYSTEM. |
| JP5145718B2 (en) * | 2006-02-03 | 2013-02-20 | 株式会社デンソー | Heat exchanger |
| EP2041419B1 (en) * | 2006-07-06 | 2016-09-07 | MAHLE Behr GmbH & Co. KG | Exhaust gas cooler, in particular for a motor vehicle |
| ES2321783B1 (en) * | 2006-09-21 | 2010-01-12 | Valeo Termico, S.A. | HEAT EXCHANGER FOR GASES, ESPECIALLY OF EXHAUST GASES OF AN ENGINE. |
| JP4775287B2 (en) * | 2006-10-18 | 2011-09-21 | 株式会社デンソー | Heat exchanger |
| DE102009035674A1 (en) * | 2009-07-30 | 2011-02-03 | Behr Gmbh & Co. Kg | Heat exchanger, heat exchanger system |
| DE102011007748A1 (en) * | 2011-04-20 | 2012-10-25 | Behr Gmbh & Co. Kg | An exhaust gas cooler for cooling combustion exhaust gas of an internal combustion engine, a water collection adapter, an exhaust gas cooling system, and a method of manufacturing an exhaust gas cooling system |
| SE537803C2 (en) | 2011-09-30 | 2015-10-20 | Scania Cv Ab | EGR cooler and internal combustion engine with such EGR cooler |
| EP2743488A1 (en) * | 2012-12-11 | 2014-06-18 | BorgWarner Inc. | Built-in exhaust gas management device |
| JP5941878B2 (en) * | 2013-07-25 | 2016-06-29 | 株式会社ユタカ技研 | Heat exchanger and heat exchange device |
| EP2944913B1 (en) * | 2014-05-16 | 2018-09-05 | Borgwarner Emissions Systems Spain, S.L.U. | Heat exchange device |
| CN104500282A (en) * | 2014-12-15 | 2015-04-08 | 无锡隆盛科技股份有限公司 | EGR (exhaust gas recirculation) cooler with variable cooling efficiency |
| CN113335019B (en) * | 2021-06-15 | 2022-09-30 | 东风汽车集团股份有限公司 | Integrated heat exchanger of automobile heat management system |
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| US1772067A (en) † | 1926-09-13 | 1930-08-05 | Metalcraft Heater Corp | Vehicle heater |
| DE914450C (en) * | 1943-01-14 | 1954-07-01 | Hans Windhoff App Und Maschine | Device for cooling the exhaust gases from internal combustion engines, in particular for motor locomotives |
| US2670933A (en) † | 1950-02-24 | 1954-03-02 | Thomas J Bay | Engine cooling apparatus |
| JPS5423825A (en) | 1977-07-22 | 1979-02-22 | Toyota Motor Corp | Exhaust gas recirculator |
| US4498524A (en) † | 1977-08-08 | 1985-02-12 | Jacobsen Orval E | Heat exchanger with by-pass |
| JPS6388212A (en) † | 1986-09-30 | 1988-04-19 | Aisin Seiki Co Ltd | Heat exchanging device |
| JPH01173320A (en) † | 1987-12-26 | 1989-07-10 | Sony Corp | Magnetic recording medium |
| DE3828034A1 (en) * | 1988-08-18 | 1990-02-22 | Borsig Gmbh | HEAT EXCHANGER |
| DE69133098T2 (en) | 1990-11-06 | 2003-04-17 | Mazda Motor | Exhaust gas recirculation system for an internal combustion engine |
| DE4430648A1 (en) * | 1994-08-29 | 1996-03-07 | Flucorrex Ag Flawil | Recuperator control, suitable for heat recovery at constant temp., from flues or dryers; avoids |
| US5617726A (en) | 1995-03-31 | 1997-04-08 | Cummins Engine Company, Inc. | Cooled exhaust gas recirculation system with load and ambient bypasses |
| GB9604917D0 (en) † | 1996-03-08 | 1996-05-08 | Red Baron Oil Tools Rental | Removal of wellhead assemblies |
| US5970960A (en) † | 1996-09-18 | 1999-10-26 | Nissan Motor Co., Ltd. | Exhaust gas recirculation system of internal combustion engine |
| US5732688A (en) * | 1996-12-11 | 1998-03-31 | Cummins Engine Company, Inc. | System for controlling recirculated exhaust gas temperature in an internal combustion engine |
| JPH11132112A (en) † | 1997-10-29 | 1999-05-18 | Mitsubishi Motors Corp | Recirculation exhaust gas cooling device |
| DE19750588B4 (en) † | 1997-11-17 | 2016-10-13 | MAHLE Behr GmbH & Co. KG | Device for exhaust gas recirculation for an internal combustion engine |
| AT2744U3 (en) † | 1997-12-16 | 1999-06-25 | Avl List Gmbh | EXHAUST GAS RECIRCULATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE |
| AT411546B (en) † | 1998-01-15 | 2004-02-25 | Man Steyr Ag | LIQUID-COOLED INTERNAL COMBUSTION ENGINE WITH EXHAUST GAS RECIRCULATING DEVICE AND DEVICE FOR COOLING RECYCLED EXHAUST |
| FR2776015B1 (en) † | 1998-03-11 | 2000-08-11 | Ecia Equip Composants Ind Auto | HEAT EXCHANGER EXHAUST MEMBER |
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| JP2000220977A (en) † | 1999-02-01 | 2000-08-08 | Usui Internatl Ind Co Ltd | Rotary heat storage heat exchanger for internal combustion engine |
| JP2000291455A (en) * | 1999-04-05 | 2000-10-17 | Isuzu Ceramics Res Inst Co Ltd | Gas engine having exhaust gas cooling device for egr |
| DE19930416B4 (en) † | 1999-07-02 | 2011-05-12 | Iav Gmbh | Device for cooling an exhaust gas mass flow recirculated to the intake side of an internal combustion engine |
| DE19962863B4 (en) * | 1999-12-24 | 2013-09-19 | Behr Gmbh & Co. Kg | Heat exchanger |
| JP2002030994A (en) † | 2000-07-13 | 2002-01-31 | Toyota Industries Corp | Egr cooler |
| GB0018406D0 (en) | 2000-07-28 | 2000-09-13 | Serck Heat Transfer Limited | EGR bypass tube cooler |
| DE50111008D1 (en) † | 2001-07-18 | 2006-10-26 | Cooper Standard Automotive D | Radiator of an exhaust gas recirculation system and exhaust gas recirculation system with such a radiator |
| DE10142539A1 (en) † | 2001-08-30 | 2003-03-20 | Behr Gmbh & Co | Exhaust gas heat exchanger |
| DE10144827A1 (en) † | 2001-09-12 | 2003-03-27 | Behr Gmbh & Co | Exhaust gas heat exchanger |
-
2002
- 2002-05-28 ES ES200201218A patent/ES2209618B1/en not_active Expired - Fee Related
-
2003
- 2003-05-28 AT AT03380127T patent/ATE333046T1/en not_active IP Right Cessation
- 2003-05-28 ES ES03380127T patent/ES2268306T5/en not_active Expired - Lifetime
- 2003-05-28 EP EP03380127A patent/EP1367253B2/en not_active Expired - Lifetime
- 2003-05-28 DE DE60306717T patent/DE60306717T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2268306T3 (en) | 2007-03-16 |
| EP1367253A1 (en) | 2003-12-03 |
| ES2268306T5 (en) | 2010-10-27 |
| DE60306717T2 (en) | 2007-08-02 |
| DE60306717T3 (en) | 2011-01-05 |
| EP1367253B2 (en) | 2010-06-16 |
| EP1367253B1 (en) | 2006-07-12 |
| DE60306717D1 (en) | 2006-08-24 |
| ATE333046T1 (en) | 2006-08-15 |
| ES2209618A1 (en) | 2004-06-16 |
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