ES2336629T3 - EXHAUST DEVICE UNDERSTANDING A HEAD EQUIPPED FROM A THERMALLY UNPACKED INTEGRATED EXHAUST MANIFOLD. - Google Patents

EXHAUST DEVICE UNDERSTANDING A HEAD EQUIPPED FROM A THERMALLY UNPACKED INTEGRATED EXHAUST MANIFOLD. Download PDF

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Publication number
ES2336629T3
ES2336629T3 ES07788989T ES07788989T ES2336629T3 ES 2336629 T3 ES2336629 T3 ES 2336629T3 ES 07788989 T ES07788989 T ES 07788989T ES 07788989 T ES07788989 T ES 07788989T ES 2336629 T3 ES2336629 T3 ES 2336629T3
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Prior art keywords
cylinder head
exhaust
cavity
exhaust device
ducts
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ES07788989T
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Spanish (es)
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Eric Dumas
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Renault SAS
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Renault SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/16—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • F02F2001/4278—Exhaust collectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

An exhaust device for a motor vehicle multi-cylinder internal combustion engine including a cylinder head of the engine in which there are exhaust ducts, a first end of each of which is connected to a combustion chamber of the engine and a second end of which opens into a cavity or plenum of an exhausted manifold integrated into the cylinder head of which an outlet duct is externally connected to a device for removing contamination from the exhaust gases of an exhaust line of the vehicle. The cavity or plenum of the manifold is formed in an element attached inside the cylinder head, and the element is thermally decoupled from the cylinder head using a thermal decoupling mechanism.

Description

Dispositivo de escape que comprende una culata equipada de un colector de escape integrado desacoplado térmicamente.Exhaust device comprising a cylinder head equipped with an integrated exhaust manifold decoupled thermally

El invento se refiere a un dispositivo de escape para un motor de combustión interna multicilíndrico de un vehículo automóvil que comprende una culata de dicho motor, en la cual están situados conductos de escape en los que un primer extremo de cada uno de ellos está unido a una cámara de combustión del citado motor y el segundo extremo desemboca en una cavidad o cámara de un colector de escape integrado en la culata en la que un conducto de salida está unido exteriormente a un dispositivo de descontaminación de los gases de escape de una tubería de escape del vehículo.The invention relates to an exhaust device for a multi-cylinder internal combustion engine of a vehicle automobile comprising a cylinder head of said engine, in which they are located exhaust ducts in which a first end of each one of them is connected to a combustion chamber of said engine and the second end flows into a cavity or chamber of a exhaust manifold integrated in the cylinder head in which a duct outlet is connected externally to a decontamination device of the exhaust gases of a vehicle exhaust pipe.

Se conocen numerosos ejemplos de dispositivos de este tipo.Numerous examples of devices of this type.

Convencionalmente, los dispositivos de escape comprenden conductos de escape conformados en la culata del motor que coinciden con conductos del colector situados enfrente de los conductos de escape. El colector comprende al menos un conducto de salida que está unido a una tubería de escape del vehículo automóvil.Conventionally, the exhaust devices comprise exhaust ducts formed in the engine head which coincide with manifold ducts located in front of the exhaust ducts The collector comprises at least one conduit of outlet that is attached to a vehicle exhaust pipe car.

Con el objetivo de disminuir la cantidad de productos contaminantes contenidos en los gases de combustión, es conocido el implantar en la tubería de escape dispositivos de descontaminación, especialmente catalizadores, que permiten convertir los productos contaminantes presentes en los gases de combustión, especialmente los hidrocarburos inquemados HC y los óxidos de nitrógeno NOx.In order to reduce the amount of pollutant products contained in flue gases, is known the implant in the exhaust pipe devices of decontamination, especially catalysts, which allow convert the polluting products present in the gases of combustion, especially unburned HC hydrocarbons and NOx nitrogen oxides.

Ahora bien, se plantea un problema durante las fases de arranque en frío del motor.Now, a problem arises during the cold start phases of the engine.

En efecto, la eficacia de los dispositivos de descontaminación es muy dependiente de su temperatura de funcionamiento. El alejamiento de estos dispositivos respecto de las cámaras de combustión del motor retarda su aumento de temperatura durante los primeros minutos de funcionamiento del motor y reduce su eficacia precisamente durante estos primeros minutos de funcionamiento del motor, que es cuando se emite la mayor cantidad de contaminan-
tes.In fact, the effectiveness of decontamination devices is very dependent on their operating temperature. The distance of these devices from the combustion chambers of the engine retards its temperature increase during the first minutes of engine operation and reduces its efficiency precisely during these first minutes of engine operation, which is when the highest amount of pollution is emitted -
tes.

Para solucionar este inconveniente, se ha propuesto realizar colectores de escape que estén parcial o totalmente integrados en la culata del motor, lo que permite reducir considerablemente la distancia entre las cámaras de combustión y el dispositivo de descontaminación, el cual está entonces directamente acoplado a la culata a la salida del
colector.To solve this problem, it has been proposed to carry out exhaust manifolds that are partially or fully integrated in the cylinder head, which allows to reduce considerably the distance between the combustion chambers and the decontamination device, which is then directly coupled to the cylinder head at the exit of
manifold.

En concreto, el documento FR-2.738.289 describe un colector de este tipo, en el cual los conductos de escape de la culata desembocan en una cavidad o cámara, conformada la mitad en el colector y la otra mitad en la culata.Specifically, the document FR-2,738,289 describes a collector of this type, in which the exhaust ducts of the cylinder head flow into a cavity or chamber, half formed in the collector and the other half in the stock.

Los documentos AT-B-397.417 y DE-A-3.815.408 describen por su parte un colector conformado de forma integral en la culata y fabricado de fundición junto con ésta.Documents AT-B-397.417 and DE-A-3,815,408 described by its part a collector formed integrally in the cylinder head and made of cast iron along with it.

Sin embargo, estos colectores conocidos del estado del arte plantean numerosos problemas.However, these known collectors of State of the art pose numerous problems.

En efecto, cuando un colector de este tipo está conformado sólo parcialmente en la culata, la distancia entre las cámaras de combustión y el dispositivo de descontaminación no está reducida al mínimo y debido a eso la eficacia del dispositivo de descontaminación no es total.Indeed, when such a collector is formed only partially in the stock, the distance between combustion chambers and the decontamination device is not minimized and because of that the effectiveness of the device Decontamination is not total.

Por otro lado, cuando el colector está integrado en la culata, está sometido a esfuerzos de temperaturas elevadas y se encuentra por tanto, como el material de la culata, sometido a una gran dilatación a medida que aumenta su temperatura. Debido a esto, es prácticamente imposible acoplar un colector de este tipo al resto de la tubería de escape si no está provisto de cavidades de refrigeración unidas a las cavidades de circulación de líquido de refrigeración de la culata.On the other hand, when the collector is integrated in the cylinder head, it is subjected to high temperature stresses and It is therefore, as the stock of the stock, subjected to a large dilation as its temperature increases. Because this is practically impossible to couple a collector of this type to rest of the exhaust pipe if it is not provided with cavities of cooling together with the liquid circulation cavities of cylinder head cooling.

Por una parte este diseño penaliza el rendimiento del motor puesto que es sinónimo de disminución del rendimiento térmico del motor debido a la necesidad de refrigerar el colector y, por otra parte, reduce considerablemente los beneficios del acercamiento del colector a las cámaras de combustión, al no permitir entonces la refrigeración del colector un aumento rápido de su temperatura, apropiado para mejorar la eficacia del dispositivo de descontaminación.On the one hand this design penalizes the engine performance since it is synonymous with decreased thermal performance of the engine due to the need to cool the collector and, on the other hand, considerably reduces the benefits of the collector approach to the chambers of combustion, not allowing the collector to cool a rapid increase in its temperature, appropriate to improve the effectiveness of the decontamination device.

Para solucionar este inconveniente, el invento proporciona un dispositivo del tipo anteriormente descrito que comprende un colector integrado en la culata del motor y provisto de medios de desacoplamiento térmico con respecto a dicha culata.To solve this problem, the invention provides a device of the type described above that It comprises a manifold integrated in the cylinder head and provided with thermal decoupling means with respect to said cylinder head.

Con este objetivo, el invento proporciona un colector del tipo descrito anteriormente, caracterizado porque los segundos extremos de los conductos de escape desembocan en un orificio de alojamiento conformado en la culata que aloja a un inserto tubular que se añade en el interior de la culata para formar el elemento añadido, que comprende orificios (34) de comunicación con los segundos extremos de los conductos de escape, y que comprende el conducto de salida que desemboca en el exterior de la culata.With this objective, the invention provides a collector of the type described above, characterized in that the second ends of the exhaust ducts lead to a housing hole formed in the cylinder head housing a tubular insert that is added inside the cylinder head to form the added element, comprising communication holes (34) with the second ends of the exhaust ducts, and that comprises the outlet duct that flows into the outside of the butt.

De acuerdo con otras características del invento:According to other features of the invention:

--
el inserto tubular está fabricado en acero inoxidable,he Tubular insert is made of stainless steel,

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el inserto tubular está montado sin juego dentro del orificio de alojamiento de la culata,he tubular insert is mounted without play inside the hole of cylinder head housing,

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los medios de desacoplamiento térmico están situados en la culata alrededor del inserto tubular y al menos entre dos conductos de escape consecutivos,the thermal decoupling means are located in the cylinder head around the tubular insert and at least between two ducts of consecutive escape,

--
los medios de desacoplamiento térmico comprenden al menos una cavidad que está conformada en el material de la culata alrededor del orificio de alojamiento y que desemboca en el citado orificio,the thermal decoupling means comprise at least one cavity which is formed in the material of the stock around the accommodation hole and leading to the aforementioned orifice,

--
el dispositivo comprende una cavidad que está situada alrededor del orificio de alojamiento entre cada par de conductos de escape consecutivos, y una cavidad que está situada alrededor del orificio de alojamiento entre un conducto de escape de extremo y una cara exterior de extremo de la culata,he device comprises a cavity that is located around the housing hole between each pair of exhaust ducts consecutive, and a cavity that is located around the hole housing between an end exhaust duct and a face outer end of the cylinder head,

--
cada cavidad se realiza durante el moldeo de la culata.every Cavity is performed during the molding of the cylinder head.

Otras características y ventajas del invento se harán evidentes con la lectura de la siguiente descripción detallada para cuya comprensión se hará referencia al dibujo adjunto, en el cual la figura única es una vista esquemática de una culata para un dispositivo de escape de acuerdo con el invento.Other features and advantages of the invention are they will become apparent upon reading the following description detailed for whose understanding reference will be made to the drawing attached, in which the unique figure is a schematic view of a cylinder head for an exhaust device according to the invention.

En la figura única se ha representado una culata 10 para un dispositivo de escape realizado de acuerdo con el invento.In the single figure a cylinder head has been represented 10 for an exhaust device made in accordance with the invention.

De forma conocida, en la culata 10 están situados conductos 12 de escape. Un primer extremo 14 de cada conducto 12 está unido a una cámara 16 de combustión del motor y el segundo extremo 18 de cada conducto 12 desemboca en una cavidad o cámara 20 de un colector 22 de escape integrado en la culata 10. Un conducto 24 de salida del colector 22 está unido exteriormente a un dispositivo (no representado) de descontaminación de los gases de escape de una tubería de escape (no representada) del vehículo. La culata 10 comprende entre cada cámara 16 de combustión cavidades 30 de circulación de un líquido de refrigeración del motor.In a known way, in the stock 10 are located exhaust ducts 12. A first end 14 of each duct 12 is attached to a combustion chamber 16 of the engine and the second end 18 of each conduit 12 flows into a cavity or chamber 20 of an exhaust manifold 22 integrated in the cylinder head 10. A outlet duct 24 of the manifold 22 is connected externally to a device (not shown) for decontamination of gases from Exhaust from an exhaust pipe (not shown) of the vehicle. The cylinder head 10 comprises between each combustion chamber 16 cavities 30 of circulation of a cooling liquid of the engine.

De acuerdo con el invento, la cavidad o cámara 20 del colector 22 está conformada en un elemento 26 que se añade en el interior de la culata 10 y dicho elemento 26 está desacoplado térmicamente de la culata 10 por medio de medios 28 de desacoplamiento térmico.According to the invention, the cavity or chamber 20 of the manifold 22 is formed in an element 26 which is added inside the cylinder head 10 and said element 26 is decoupled thermally of the cylinder head 10 by means 28 of thermal decoupling

Más en concreto, los segundos extremos 18 de los conductos 12 de escape desembocan en un orificio 32 de alojamiento que está conformado en la culata 10. Este orificio 32 aloja a un inserto 26 tubular que forma el elemento 26 añadido que se añade en el interior de la culata, el cual comprende orificios 34 de comunicación con los segundos extremos 18 de los conductos 12 de escape, y el cual comprende el conducto 24 de salida que desemboca en el exterior de la culata 10.More specifically, the second ends 18 of the Exhaust ducts 12 flow into a housing hole 32 which is formed in the cylinder head 10. This hole 32 houses a tubular insert 26 forming the added element 26 which is added in the interior of the cylinder head, which comprises holes 34 of communication with the second ends 18 of the ducts 12 of exhaust, and which comprises the outlet duct 24 which leads to outside the cylinder head 10.

En la realización el inserto 26 tubular está realizado en acero inoxidable, ya que este material presenta características de dilatación térmica apropiadas para garantizar una estanqueidad satisfactoria cuando está conectado al dispositivo de descontaminación, cualquiera que sea su temperatura. Es conveniente señalar que esta característica no es limitativa del invento, y que para la buena puesta en práctica del invento se podría emplear cualquier otro material que presente características análogas.In the embodiment the tubular insert 26 is made of stainless steel, since this material presents Appropriate thermal expansion characteristics to ensure satisfactory tightness when connected to the device decontamination, whatever its temperature. It is convenient point out that this characteristic is not limiting of the invention, and that for the proper implementation of the invention, it could be used any other material that has similar characteristics.

En la realización preferente del invento, el inserto 26 tubular se monta sin juego dentro del orificio 32 de alojamiento de la culata 10. El inserto 26 tubular se introduce por ejemplo dentro del orificio 32 según un ajuste con apriete.In the preferred embodiment of the invention, the tubular insert 26 is mounted without play inside hole 32 of cylinder head housing 10. The tubular insert 26 is introduced by example inside hole 32 according to a tight fit.

Ventajosamente, los medios 28 de desacoplamiento térmico están situados en la culata alrededor del inserto 26 tubular y al menos entre dos conductos 12 de escape consecutivos.Advantageously, the decoupling means 28 thermal are located in the cylinder head around the insert 26 tubular and at least between two exhaust ducts 12 consecutive.

Más en concreto, los medios 28 de desacoplamiento térmico comprenden al menos una cavidad 28 que está conformada en el material de la culata 10 alrededor del orificio 32 de alojamiento, y que desemboca en el citado orificio 32. Esta cavidad está llena de aire y permite por lo tanto un desacoplamiento térmico del inserto 26 con respecto a la culata, evitando que el calor de la culata 10 se comunique por conducción al inserto 26.More specifically, media 28 of thermal decoupling comprise at least one cavity 28 that is formed in the stock of the cylinder head 10 around the hole 32 of accommodation, and which flows into said hole 32. This cavity is full of air and therefore allows decoupling thermal of the insert 26 with respect to the cylinder head, preventing the Heat of cylinder head 10 is communicated by conduction to insert 26.

Preferentemente, como ilustra la figura única, el dispositivo comprende una cavidad 28 que está situada alrededor del orificio 32 de alojamiento entre cada par de conductos 12 de escape consecutivos, y una cavidad 28 que está situada alrededor del orificio 32 de alojamiento entre un conducto 12 de escape de extremo y una cara 36 exterior de extremo de la culata 10.Preferably, as the single figure illustrates, the device comprises a cavity 28 that is located around of the housing hole 32 between each pair of ducts 12 of consecutive exhaust, and a cavity 28 that is located around of the housing hole 32 between an exhaust duct 12 of end and an outer end face 36 of the cylinder head 10.

Para la buena realización de las cavidades 28 se puede utilizar cualquier procedimiento de realización. Sin embargo, en la realización preferente del invento cada cavidad 28 se realiza durante el moldeo de la culata 10.For the proper realization of the cavities 28, You can use any realization procedure. But nevertheless, in the preferred embodiment of the invention each cavity 28 is made during the molding of the cylinder head 10.

El invento permite por tanto beneficiarse de un dispositivo que comprende un colector 26 añadido dentro de la culata 10 lo más cerca posible de las cámaras 12 de combustión, lo que permite optimizar las prestaciones de un dispositivo de descontaminación unido a su conducto 24 de salida, y que está exento de los inconvenientes de los colectores integrados conocidos del estado del arte debido a su desacoplamiento térmico con respecto a la culata 10.The invention thus allows to benefit from a device comprising a manifold 26 added within the cylinder head 10 as close as possible to combustion chambers 12, which which allows to optimize the performance of a device decontamination attached to its outlet duct 24, and which is exempt of the drawbacks of known integrated collectors of state of the art due to its thermal decoupling with respect to the stock 10.

Claims (7)

1. Dispositivo de escape para motor de combustión interna multicilíndrico de un vehículo automóvil que comprende una culata (10) de dicho motor, en la cual están situados conductos (12) de escape en los que un primer extremo (14) de cada uno está unido a una cámara (16) de combustión de dicho motor y el segundo extremo (18) desemboca en una cavidad o cámara (20) de un colector (22) de escape integrado en la culata (10), en el cual un conducto (24) de salida está unido exteriormente a un dispositivo de descontaminación de los gases de escape de una tubería de escape del vehículo, del tipo en el que la cavidad o cámara (20) del colector (22) está conformada en un elemento (26) añadido en el interior de la culata (10) y en el que dicho elemento (26) está desacoplado térmicamente de la culata (10) por medio de medios (28) de desacoplamiento térmico,1. Exhaust device for engine multi-cylinder internal combustion of a motor vehicle that comprises a cylinder head (10) of said engine, in which they are located exhaust ducts (12) in which a first end (14) of each one is connected to a combustion chamber (16) of said engine and the second end (18) flows into a cavity or chamber (20) of a exhaust manifold (22) integrated in the cylinder head (10), in which a outlet duct (24) is connected externally to a device decontamination of exhaust gases from an exhaust pipe of the vehicle, of the type in which the cavity or chamber (20) of the collector (22) is made up of an element (26) added in the inside the cylinder head (10) and in which said element (26) is thermally decoupled from the cylinder head (10) by means (28) thermal decoupling, caracterizado porque los segundos extremos (18) de los conductos (12) de escape desembocan en un orificio (32) de alojamiento conformado en la culata (10) que aloja a un inserto (26) tubular que se añade en el interior de la culata (10) para conformar el elemento (26) añadido, el cual comprende orificios (34) de comunicación con los segundos extremos (18) de los conductos (12) de escape, y el cual comprende el conducto (24) de salida que desemboca en el exterior de la culata (10). characterized in that the second ends (18) of the exhaust ducts (12) flow into a housing hole (32) formed in the cylinder head (10) that houses a tubular insert (26) which is added inside the cylinder head (10) to form the added element (26), which comprises holes (34) for communication with the second ends (18) of the exhaust ducts (12), and which comprises the outlet duct (24) that flows on the outside of the stock (10). 2. Dispositivo de escape de acuerdo con la reivindicación anterior, caracterizado porque el inserto (26) tubular está realizado en acero inoxidable.2. Exhaust device according to the preceding claim, characterized in that the tubular insert (26) is made of stainless steel. 3. Dispositivo de escape de acuerdo con una de las reivindicaciones 1 ó 2, caracterizado porque el inserto (26) tubular está montado sin juego dentro del orificio (32) de alojamiento de la culata (10).3. Exhaust device according to one of claims 1 or 2, characterized in that the tubular insert (26) is mounted without play inside the bore hole (32) of the cylinder head (10). 4. Dispositivo de escape de acuerdo con la reivindicación anterior, caracterizado porque los medios (28) de desacoplamiento térmico están situados en la culata (10) alrededor del inserto (26) tubular y al menos entre dos conductos (12) de escape consecutivos.4. Exhaust device according to the preceding claim, wherein the means (28) for thermal decoupling are located in the yoke (10) around the insert (26) tubular and at least between two ducts (12) consecutive escape. 5. Dispositivo de escape de acuerdo con la reivindicación anterior, caracterizado porque los medios (28) de desacoplamiento térmico comprenden al menos una cavidad (28) que está conformada en el material de la culata (10) alrededor del orificio (32) de alojamiento y que desemboca en el citado orificio (32).5. Exhaust device according to the preceding claim, characterized in that the thermal decoupling means (28) comprise at least one cavity (28) that is formed in the stock of the cylinder head (10) around the housing hole (32) and which flows into said hole (32). 6. Dispositivo de escape de acuerdo con la reivindicación anterior, caracterizado porque comprende una cavidad (28) que está situada alrededor del orificio (32) de alojamiento entre cada par de conductos (12) de escape consecutivos, y una cavidad (28) que está situada alrededor del orificio (32) de alojamiento entre un conducto (12) de escape de extremo y una cara (36) exterior de extremo de la culata (10).6. Exhaust device according to the preceding claim, characterized in that it comprises a cavity (28) that is located around the housing hole (32) between each pair of consecutive exhaust ducts (12), and a cavity (28) which it is located around the housing hole (32) between an end exhaust duct (12) and an outer end face (36) of the cylinder head (10). 7. Dispositivo de escape de acuerdo con una de las reivindicaciones 5 ó 6, caracterizado porque cada cavidad (28) se realiza durante el moldeo de la culata (10).7. Exhaust device according to one of claims 5 or 6, characterized in that each cavity (28) is made during the molding of the cylinder head (10).
ES07788989T 2006-06-23 2007-06-12 EXHAUST DEVICE UNDERSTANDING A HEAD EQUIPPED FROM A THERMALLY UNPACKED INTEGRATED EXHAUST MANIFOLD. Active ES2336629T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0652631A FR2902827B1 (en) 2006-06-23 2006-06-23 EXHAUST DEVICE COMPRISING A CYLINDER HEAD PROVIDED WITH AN INTEGRATED EXHAUST COLLECTOR THERMALLY DECOUPLED
FR0652631 2006-06-23

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ES2336629T3 true ES2336629T3 (en) 2010-04-14

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ES07788989T Active ES2336629T3 (en) 2006-06-23 2007-06-12 EXHAUST DEVICE UNDERSTANDING A HEAD EQUIPPED FROM A THERMALLY UNPACKED INTEGRATED EXHAUST MANIFOLD.

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US (1) US20090229248A1 (en)
EP (1) EP2032827B1 (en)
JP (1) JP2009541656A (en)
AT (1) ATE453796T1 (en)
DE (1) DE602007004112D1 (en)
ES (1) ES2336629T3 (en)
FR (1) FR2902827B1 (en)
RU (1) RU2439356C2 (en)
WO (1) WO2007148000A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102009001542A1 (en) 2009-03-13 2010-10-07 Ford Global Technologies, LLC, Dearborn Cylinder head for a naturally aspirated engine and use of such a cylinder head
FR3084109B1 (en) 2018-07-23 2022-08-19 Renault Sas THERMAL INSULATION DEVICE TO THE THERMAL ENGINE EXHAUST

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US3633368A (en) * 1970-08-12 1972-01-11 Du Pont Exhaust gas reactor
JPS5548746Y2 (en) * 1975-12-27 1980-11-14
GB1553584A (en) * 1976-04-08 1979-09-26 Perkins Engines Ltd Inlet and exhaust manifold assembly for an internal combustion engine
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ATE453796T1 (en) 2010-01-15
WO2007148000A1 (en) 2007-12-27
RU2009102073A (en) 2010-07-27
US20090229248A1 (en) 2009-09-17
JP2009541656A (en) 2009-11-26
DE602007004112D1 (en) 2010-02-11
FR2902827A1 (en) 2007-12-28
FR2902827B1 (en) 2012-09-28
EP2032827A1 (en) 2009-03-11
EP2032827B1 (en) 2009-12-30
RU2439356C2 (en) 2012-01-10

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