EP1554476A1 - Device and method for degassing on motor vehicles - Google Patents

Device and method for degassing on motor vehicles

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Publication number
EP1554476A1
EP1554476A1 EP03760716A EP03760716A EP1554476A1 EP 1554476 A1 EP1554476 A1 EP 1554476A1 EP 03760716 A EP03760716 A EP 03760716A EP 03760716 A EP03760716 A EP 03760716A EP 1554476 A1 EP1554476 A1 EP 1554476A1
Authority
EP
European Patent Office
Prior art keywords
compartments
compartment
degassing device
degassing
coolant
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
EP03760716A
Other languages
German (de)
French (fr)
Other versions
EP1554476B1 (en
Inventor
Pierre Youinou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POLYMERES BARRE THOMAS Ste
Original Assignee
CF Gomma SpA
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Filing date
Publication date
Application filed by CF Gomma SpA filed Critical CF Gomma SpA
Publication of EP1554476A1 publication Critical patent/EP1554476A1/en
Application granted granted Critical
Publication of EP1554476B1 publication Critical patent/EP1554476B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/028—Deaeration devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs

Definitions

  • the present invention relates to a degassing device and method for motor vehicles. It applies in particular, but not exclusively, to a degassing device for the coolant of a heat engine, particularly for the engines of motor vehicles.
  • the coolant conventionally circulating in a cooling circuit of the engine block, is charged with gas.
  • gases can be of various origins and consist of: - a combustion gas, generally due to a defect in the cylinder head gasket, water vapor, antifreeze vapor, atmospheric air.
  • the degassing box is an essential element for the proper functioning of the engine and also performs other technical functions such as: filling the circuit, a reserve to allow absorption of liquid consumption and / or volume variations due to temperatures and pressures, pressurization of the circuit by a tared plug, visualization of the liquid level.
  • the degassing box is an essential element of the engine block first of all concerning the management of the gases circulating in the liquid but also at the level of the above-mentioned technical functions which it must ensure in the first place.
  • Patent No. FR 2730272 also describes a degassing box composed of two communicating compartments. The first compartment allows degassing by centrifugation of the upper jet in a cylinder.
  • the openings in the lower part of the cylinder do not allow all the turbulence to be contained, thus disturbing the efficiency of degassing.
  • the second compartment creates a calm zone to complete the degassing of the liquid. This design does not provide for a lower arrival.
  • a degassing device for the coolant of a heat engine in particular for motor vehicle engines, comprising at least one lower compartment into which is brought, via a supply duct. , part of the coolant, and at least one upper compartment into which is brought, by means of another supply duct, another part of said liquid, the compartments each having a different diameter, characterized in that the two compartments are in cylindrical form and in that the compartment having the smallest diameter, called the inside diameter, is protruding inside the compartment with the largest diameter, called the outside diameter.
  • the above-mentioned internal diameter will be chosen according to the flow rate of the liquid to be degassed.
  • the supply conduits of the two above-mentioned compartments will be respectively oriented perpendicular to the two compartments, lower and upper.
  • the lower compartment is supported on the outer casing by means of a base, constituted for example by a plurality of feet.
  • the degassing device will include an outer casing in which the two above-mentioned compartments are housed.
  • the envelope of the degassing device will be in spherical form; this envelope can be composed of at least two parts, for example identical.
  • the two parts forming the outer envelope can be heat-sealed, for example at the sidewalk or part of their edges.
  • the envelope will have a diameter corresponding to a desired volume, for example at least equal to the total volume of liquid to be degassed.
  • the outer envelope as well as the two above-mentioned compartments are molded thermoplastics, obtained for example by injection.
  • the envelope and the two compartments may be made of propylene.
  • the degassing device will include an outlet duct for the coolant so that the latter, once degassed, can be evacuated by the effect of its own weight, that is to say by gravitation.
  • the two compartments will extend vertically, substantially along a central axis of the outer envelope.
  • the two compartments will extend vertically, substantially near one of the edges of the outer envelope.
  • the invention also relates to a degassing process for the coolant of a heat engine, in particular for motor vehicle engines, by means of at least one lower cylindrical compartment into which is brought, via a conduit. supply, part of the coolant and at least one upper cylindrical compartment into which is brought, via another supply duct, another part of said liquid, the compartments each having a different diameter, the two compartments being housed in an outer envelope, the compartment having the smallest diameter, called the inside diameter, being protruding inside the compartment with the largest diameter, called the outside diameter, characterized in that it comprises the steps of: displacement coolant tangential to the wall of said compartments in order to avoid the emulsion of the li what, a step of tranquilizing the coolant, degassing the coolant tranquilized by gravity.
  • the tangential displacement of the coolant in each of the compartments takes place in the opposite direction.
  • the invention therefore makes it possible to improve the degassing in the cooling liquid, or fluid, in all the operating phases of a motor vehicle engine.
  • the device according to the invention by virtue of its compactness, is easily integrated into the constraints of space requirement of the engine behavior and makes it possible to achieve, by its particularly simple design, very competitive manufacturing costs.
  • the device of the invention makes it possible to integrate several liquid inlets "in the air” and / or "in the submarine".
  • FIG. 1 is an overall view of a conventional engine block making it possible to grasp the different elements making it up as well as the different pipes connecting these different elements together;
  • Figures 2 and 3 are respectively a vertical sectional view and a horizontal sectional view of a first embodiment of a degassing device according to the invention
  • Figures 4 and 5 are respectively a vertical sectional view and a horizontal sectional view of a degassing device according to the invention
  • Figures 6 and 7 are two vertical sectional views of a second embodiment of a degassing device according to the invention.
  • Figures 8 and 9 are two vertical sectional views of a third embodiment of a degassing device according to the invention.
  • Figure 1 depicts a typical cooling circuit.
  • the cooling circuit in motor vehicles is mainly composed of a heat engine 1 to be cooled, a pump 2 allowing the circulation of the liquid, radiators 3, 3 ′ ensuring the heat exchange and a box, or device, for degassing 4.
  • the liquid to be degassed coming from the radiator 3 ′, enters the degassing device 4 by a supply pipe 5.
  • This coolant supply duct 5 is oriented tangentially to a first cylindrical upper compartment 6, thus allowing the liquid to flow along the wall of the compartment 6.
  • This cylindrical compartment 6 is protruding in a second compartment lower 7, also cylindrical but with a diameter greater than that of the first compartment 6.
  • the first compartment 6 opens in the lower part into a second compartment 7 so that, thanks to the nesting of the two compartments 6 and 7 one inside the other, the turbulences of the coolant remain trapped.
  • the respective diameters of the two cylindrical compartments 6 and 7 depend on the flow rate of the liquid to be degassed.
  • the second compartment 7 is equipped in the lower part with a base 9, ideally constituted by a plurality of feet positioning in height so that it is always submerged relative to the level of the liquid.
  • the lower compartment 7, having a diameter greater than the upper compartment 6, allows the liquid to pour into an outer casing 10 housing the two above-mentioned lower 7 and upper 6 compartments.
  • the liquid being tranquilized, degassing can take place by gravity and leave the degassing device through an outlet orifice 11 located in the lower part of the degassing device.
  • the degassing device is composed of an upper half-envelope 12, of a lower cylindrical compartment 13 and a lower half-casing 14.
  • the upper half-envelope 12 is spherical in shape and is equipped with a supply duct 5 allowing the entry of the liquid to be degassed, opening tangentially to the wall of the upper compartment 6 and on the upper part of an orifice 15 allowing filling the circuit and screwing in a tared plug.
  • the upper half-envelope 12 also includes, on its lower edge, a sidewalk 16 to allow heat sealing with the lower half-envelope 14.
  • the cylindrical lower compartment 13 is provided with a supply duct 8 allowing the entry of the liquid to be degassed, oriented tangentially to the wall. To position it, this lower compartment is equipped with feet 17 which can be clipped inside the lower half-casing 14.
  • the lower half-envelope 14 is equipped with a supply duct 18 also allowing the entry of the liquid to be degassed, coming to be connected to the supply duct 8 of the aforesaid lower compartment 13; the supply duct 18 of the lower half-envelope 14 having a diameter greater than that of the supply duct 8 of the lower compartment 13.
  • the half-envelope 14 In its lower part, the half-envelope 14 is provided with an outlet orifice 11 for the liquid to be degassed as well as pins 19 for holding the lower cylindrical compartment in position 13.
  • the half-envelope 14 also has on its upper edge , a sidewalk 20 to allow heat sealing with the upper half-envelope 12.
  • Figures 7 and 8 show a degassing device according to an alternative embodiment.
  • said device comprises an upper half-envelope 21 and a lower half-envelope 22.
  • the upper half-envelope 21 is in spherical form and is equipped with a supply conduit 5 for the liquid to be degassed, opening tangentially, or perpendicularly, to the wall of the upper cylindrical compartment 6.
  • This upper half-envelope 21 is also equipped with an orifice 15, located on its upper part, allowing the filling of the circuit and the screwing of a tared plug.
  • This half-envelope 21 also has on its lower edge, a sidewalk 16 to allow heat sealing with the lower half-envelope 22.
  • the lower half-envelope 22 is in spherical form and is equipped with a supply duct 8 for the liquid to be degassed opening tangentially to the wall of the cylindrical lower compartment 7. In its lower part, this lower half-envelope 22 is provided an outlet orifice 11 for the degassed liquid.
  • the lower half-envelope 22 also has on its upper edge, a sidewalk 20 to allow heat sealing with the upper half-envelope 21.
  • the operation of this degassing device is identical to that of the first degassing device described, however the lower 22 and upper 21 compartments are positioned differently so as to allow production in only two elements.
  • the device for degassing is composed of two elements: an upper half-envelope 21 and a lower half-envelope 22.
  • the upper half-envelope 21, of spherical shape, is equipped with a conduit 5 for supplying the liquid to be degassed, opening tangentially to the wall of the upper cylindrical compartment 6.
  • the upper half-envelope 21 is also equipped with a second cylindrical upper compartment 6 ', for example identical to the first 6. On its upper part, this half-envelope 21 also includes on its lower edge, a sidewalk 16 to allow heat sealing with the lower half-envelope 22.
  • the lower half-envelope 22 of spherical shape, is equipped with a supply conduit 8 for the liquid to be degassed, opening tangentially to the wall of a lower cylindrical compartment 7.
  • the half-envelope lower 22 includes a second lower cylinder 7 '.
  • the lower half-envelope 22 has on its upper edge, a sidewalk 20 to allow heat sealing with the upper half-envelope 21.
  • this variant of the degassing device according to the invention is similar to that of the first variant described, however the lower 7 and upper 8 cylindrical compartments are respectively lined 7 'and 8' and the liquid supply conduits 5 and 8 are separated, thus offering the possibility of degassing higher flow rates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Processing Of Solid Wastes (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention relates to a degassing device for the cooling fluid of a thermal engine, particularly for a motor vehicle, comprising at least one lower compartment (7) into which a part of the cooling fluid is introduced by means of a supply line (8) and at least one upper compartment (6) into which another part of said fluid is introduced by means of another supply line (5). The above is characterised in that the two compartments (6) and (7) have a cylindrical form, each of the compartments (6) and (7) having a different diameter with (6) having a smaller diameter, called the inner diameter and extending into the inside of compartment (7) of larger diameter, called the external diameter.

Description

DISPOSITIF ET PROCEDE DE DÉGAZAGE POUR VÉHICULES DEGASSING DEVICE AND METHOD FOR VEHICLES
AUTOMOBILESAUTOMOBILES
La présente invention concerne un dispositif et un procédé de dégazage pour véhicules automobiles. Elle s'applique notamment, mais non exclusivement, à un dispositif de dégazage pour le liquide de refroidissement d'un moteur thermique, particulièrement pour les moteurs de véhicules automobiles.The present invention relates to a degassing device and method for motor vehicles. It applies in particular, but not exclusively, to a degassing device for the coolant of a heat engine, particularly for the engines of motor vehicles.
Le liquide de refroidissement, circulant classiquement dans un circuit de refroidissement du bloc moteur, se charge en gaz. Ces gaz peuvent être d'origines diverses et consister en : - un gaz de combustion, due en général à un défaut du joint de culasse, de la vapeur d'eau, de la vapeur d'antigel, de 1 ' air atmosphérique.The coolant, conventionally circulating in a cooling circuit of the engine block, is charged with gas. These gases can be of various origins and consist of: - a combustion gas, generally due to a defect in the cylinder head gasket, water vapor, antifreeze vapor, atmospheric air.
Or les susdits gaz présentent des inconvénients importants. En quantité importante, ces gaz peuvent provoquer des incidents graves, tels que le désamorçage de la pompe et/ou la fissuration du bloc moteur due à une poche de gaz empêchant l'échange thermique.However the above gases have significant drawbacks. In large quantities, these gases can cause serious incidents, such as defusing the pump and / or cracking of the engine block due to a gas pocket preventing heat exchange.
Par ailleurs, la boîte de dégazage est un organe essentiel au bon fonctionnement du moteur et assure également d'autres fonctions techniques telles que : le remplissage du circuit, une réserve pour permettre d'absorber les consommations du liquide et/ou les variations de volumes dues aux températures et pressions, la pressurisation du circuit par un bouchon taré, la visualisation du niveau de liquide.In addition, the degassing box is an essential element for the proper functioning of the engine and also performs other technical functions such as: filling the circuit, a reserve to allow absorption of liquid consumption and / or volume variations due to temperatures and pressures, pressurization of the circuit by a tared plug, visualization of the liquid level.
Ainsi, la boîte de dégazage est un élément essentiel du bloc moteur tout d'abord concernant la gestion des gaz circulant dans le liquide mais également au niveau des susdites fonctions techniques qu'elle doit assurer en premier lieu.Thus, the degassing box is an essential element of the engine block first of all concerning the management of the gases circulating in the liquid but also at the level of the above-mentioned technical functions which it must ensure in the first place.
On connaît déjà le brevet français N°FR 2317489 portant sur des perfectionnements apportés aux circuits de refroidissement pour moteurs à combustion. Dans ce système, le liquide, dans un premier temps, est freiné en amont, puis il pénètre dans le vase d'expansion à une faible vitesse permettant d'éviter des turbulences génératrices d'émulsion et ainsi créer une zone calme pour dégazer le liquide. Ce système présente l'inconvénient d'être particulièrement coûteux et encombrant au sein du bloc moteur puisque la fonction de la boîte de dégazage est assurée par deux organes.We already know the French patent N ° FR 2317489 relating to improvements made to the cooling circuits for combustion engines. In this system, the liquid, at first, is braked upstream, then it enters the expansion tank at a low speed making it possible to avoid emulsion-generating turbulence and thus create a calm zone for degassing the liquid . This system has the disadvantage of being particularly expensive and bulky within the engine block since the function of the degassing box is provided by two members.
On connaît également le brevet français N°FR 2579668 portant sur une boîte de dégazage composée de deux compartiments communicants, une partie supérieure et une partie inférieure. La partie supérieure permet le dégazage du liquide par déphasage du jet supérieur en le brisant sur une cloison, dite de tranquillisation. Ce procédé n'est pas efficace car il génère des turbulences. La partie inférieure permet le dégazage par centrifugation du jet inférieur en créant un tourbillon, cependant ce vortex est directement en liaison avec la sortie du liquide, donc le dégazage ne peut pas se faire correctement. Le brevet N°FR 2730272 décrit également une boîte de dégazage composée de deux compartiments communicants. Le premier compartiment permet le dégazage par centrifugation du jet supérieur dans un cylindre. Cependant, les ouvertures en partie basse du cylindre ne permettent pas de contenir toutes les turbulences perturbant ainsi l'efficacité du dégazage. Le deuxième compartiment permet de créer une zone calme pour compléter le dégazage du liquide. Cette conception ne prévoit pas d'arrivée inférieure.Also known is French patent No. FR 2579668 relating to a degassing box composed of two communicating compartments, an upper part and a lower part. The upper part allows the degassing of the liquid by phase shifting of the upper jet by breaking it on a partition, called a tranquilization. This process is not effective because it generates turbulence. The lower part allows degassing by centrifugation of the lower jet by creating a vortex, however this vortex is directly in connection with the exit of the liquid, therefore degassing cannot be done correctly. Patent No. FR 2730272 also describes a degassing box composed of two communicating compartments. The first compartment allows degassing by centrifugation of the upper jet in a cylinder. However, the openings in the lower part of the cylinder do not allow all the turbulence to be contained, thus disturbing the efficiency of degassing. The second compartment creates a calm zone to complete the degassing of the liquid. This design does not provide for a lower arrival.
L'invention a donc pour but de remédier à ces inconvénients. Elle propose à cet effet un dispositif de dégazage pour le liquide de refroidissement d'un moteur thermique, notamment pour les moteurs de véhicule automobile, comportant au moins un compartiment inférieur dans lequel est amenée, par l'intermédiaire d'un conduit d'amenée, une partie du liquide de refroidissement, et au moins un compartiment supérieur dans lequel est amenée, par l'intermédiaire d'un autre conduit d'amenée, une autre partie dudit liquide, les compartiments présentant chacun un diamètre différent, caractérisé en ce que les deux compartiments se présentent sous forme cylindrique et en ce que le compartiment présentant le plus petit diamètre, dénommé diamètre intérieur, est protubérant à l'intérieur du compartiment de plus grand diamètre, dénommé diamètre extérieur.The invention therefore aims to remedy these drawbacks. To this end, it proposes a degassing device for the coolant of a heat engine, in particular for motor vehicle engines, comprising at least one lower compartment into which is brought, via a supply duct. , part of the coolant, and at least one upper compartment into which is brought, by means of another supply duct, another part of said liquid, the compartments each having a different diameter, characterized in that the two compartments are in cylindrical form and in that the compartment having the smallest diameter, called the inside diameter, is protruding inside the compartment with the largest diameter, called the outside diameter.
Avantageusement, le susdit diamètre intérieur sera choisi en fonction du débit du liquide à dégazer.Advantageously, the above-mentioned internal diameter will be chosen according to the flow rate of the liquid to be degassed.
De préférence, les conduits d'amenée des deux susdits compartiments seront respectivement orientés perpendiculairement aux deux com artiments, inférieur et supérieur. Avantageusement, le compartiment inférieur est supporté sur l'enveloppe extérieure par l'intermédiaire d'un piétement, constitué par exemple par une pluralité de pieds.Preferably, the supply conduits of the two above-mentioned compartments will be respectively oriented perpendicular to the two compartments, lower and upper. Advantageously, the lower compartment is supported on the outer casing by means of a base, constituted for example by a plurality of feet.
Le dispositif de dégazage comprendra une enveloppe extérieure dans laquelle les deux susdits compartiments sont logés .The degassing device will include an outer casing in which the two above-mentioned compartments are housed.
De préférence, l'enveloppe du dispositif de dégazage se présentera sous forme sphérique ; cette enveloppe pouvant être composée d'au moins deux parties, par exemple identique. Dans ce cas, les deux parties formant l'enveloppe extérieure pourront être thermosoudées , par exemple au niveau du trottoir ou d'une partie de leurs bordures.Preferably, the envelope of the degassing device will be in spherical form; this envelope can be composed of at least two parts, for example identical. In this case, the two parts forming the outer envelope can be heat-sealed, for example at the sidewalk or part of their edges.
Avantageusement, l'enveloppe présentera un diamètre correspondant à un volume souhaité, par exemple au moins égal au volume total de liquide à dëgazer.Advantageously, the envelope will have a diameter corresponding to a desired volume, for example at least equal to the total volume of liquid to be degassed.
Selon une possibilité offerte par l'invention, l'enveloppe extérieure ainsi que les deux susdits compartiments sont des thermoplastiques moulés, obtenus par exemple par injection. L'enveloppe et les deux compartiments pourront être en propylène.According to one possibility offered by the invention, the outer envelope as well as the two above-mentioned compartments are molded thermoplastics, obtained for example by injection. The envelope and the two compartments may be made of propylene.
Le dispositif de dégazage comprendra un conduit de sortie pour le liquide de refroidissement de sorte que ce dernier, une fois dégazé, puisse être évacué par l'effet de son propre poids, c'est-à-dire par gravitation. Selon une variante du dispositif de dégazage selon l'invention, les deux compartiments s'étendront verticalement, sensiblement selon un axe central de l'enveloppe extérieure.The degassing device will include an outlet duct for the coolant so that the latter, once degassed, can be evacuated by the effect of its own weight, that is to say by gravitation. According to a variant of the degassing device according to the invention, the two compartments will extend vertically, substantially along a central axis of the outer envelope.
Selon une autre variante de l'invention, les deux compartiments s'étendront verticalement, sensiblement à proximité d'un des bords de l'enveloppe extérieure.According to another variant of the invention, the two compartments will extend vertically, substantially near one of the edges of the outer envelope.
L'invention porte également sur un procédé de dégazage pour le liquide de refroidissement d'un moteur thermique, notamment pour les moteurs de véhicule automobile, grâce à au moins un compartiment cylindrique inférieur dans lequel est amenée, par l'intermédiaire d'un conduit d'amenée, une partie du liquide de refroidissement et au moins un compartiment cylindrique supérieur dans lequel est amenée, par l'intermédiaire d'un autre conduit d'amenée, une autre partie dudit liquide, les compartiments présentant chacun un diamètre différent, les deux compartiments étant logés dans une enveloppe extérieure, le compartiment présentant le plus petit diamètre, dénommé diamètre intérieur, étant protubérant à l'intérieur du compartiment de plus grand diamètre, dénommé diamètre extérieur, caractérisé en ce qu'il comprend les étapes : de déplacement du liquide de refroidissement tangentiellement à la paroi desdits compartiments afin d'éviter l'émulsion du liquide, une étape de tranquillisation du liquide de refroidissement, de dégazage du liquide de refroidissement tranquillisé par gravité. Avantageusement, le déplacement tangentiel du liquide de refroidissement dans chacun des compartiments s'effectue en sens contraire.The invention also relates to a degassing process for the coolant of a heat engine, in particular for motor vehicle engines, by means of at least one lower cylindrical compartment into which is brought, via a conduit. supply, part of the coolant and at least one upper cylindrical compartment into which is brought, via another supply duct, another part of said liquid, the compartments each having a different diameter, the two compartments being housed in an outer envelope, the compartment having the smallest diameter, called the inside diameter, being protruding inside the compartment with the largest diameter, called the outside diameter, characterized in that it comprises the steps of: displacement coolant tangential to the wall of said compartments in order to avoid the emulsion of the li what, a step of tranquilizing the coolant, degassing the coolant tranquilized by gravity. Advantageously, the tangential displacement of the coolant in each of the compartments takes place in the opposite direction.
Grâce à ces particularités, l'invention permet donc d'améliorer le dégazage dans le liquide, ou le fluide, de refroidissement dans toutes les phases de fonctionnement d'un moteur de véhicule automobile.Thanks to these features, the invention therefore makes it possible to improve the degassing in the cooling liquid, or fluid, in all the operating phases of a motor vehicle engine.
Par ailleurs, le dispositif selon l'invention, de par sa compacité, s'intègre facilement dans les contraintes d'encombrement du comportement moteur et permet d'atteindre, de par sa conception particulièrement simple, des coûts de fabrication très compétitifs. Selon les variantes, le dispositif de l'invention permet d'intégrer plusieurs entrées de liquide « en aérien » et/ou « en sous-marin ».Furthermore, the device according to the invention, by virtue of its compactness, is easily integrated into the constraints of space requirement of the engine behavior and makes it possible to achieve, by its particularly simple design, very competitive manufacturing costs. According to the variants, the device of the invention makes it possible to integrate several liquid inlets "in the air" and / or "in the submarine".
Des modes d'exécution de l'invention seront décrits ci-après, à titre d'exemple non limitatif, avec référence aux figures annexées dans lesquelles :Embodiments of the invention will be described below, by way of nonlimiting example, with reference to the appended figures in which:
la figure 1 est une vue d'ensemble d'un bloc moteur classique permettant d'appréhender les différents éléments le composant ainsi que les différents tuyaux reliant ces différents éléments entre eux ;FIG. 1 is an overall view of a conventional engine block making it possible to grasp the different elements making it up as well as the different pipes connecting these different elements together;
les figures 2 et 3 sont respectivement une vue en coupe verticale et une vue en coupe horizontale d'un premier mode de réalisation d'un dispositif de dégazage selon l'invention ;Figures 2 and 3 are respectively a vertical sectional view and a horizontal sectional view of a first embodiment of a degassing device according to the invention;
les figures 4 et 5 sont respectivement une vue en coupe verticale et une vue en coupe horizontale d'un dispositif de dégazage selon l'invention ; les figures 6 et 7 sont deux vues en coupe verticale d'un second mode de réalisation d'un dispositif de dégazage selon l'invention ;Figures 4 and 5 are respectively a vertical sectional view and a horizontal sectional view of a degassing device according to the invention; Figures 6 and 7 are two vertical sectional views of a second embodiment of a degassing device according to the invention;
les figures 8 et 9 sont deux vues en coupe verticale d'un troisième mode de réalisation d'un dispositif de dégazage selon l'invention.Figures 8 and 9 are two vertical sectional views of a third embodiment of a degassing device according to the invention.
La figure 1 décrit un circuit de refroidissement classique. Ainsi, le circuit de refroidissement dans les véhicules automobiles est composé principalement d'un moteur thermique 1 à refroidir, d'une pompe 2 permettant la circulation du liquide, de radiateurs 3, 3' assurant l'échange thermique et d'une boîte, ou dispositif, de dégazage 4.Figure 1 depicts a typical cooling circuit. Thus, the cooling circuit in motor vehicles is mainly composed of a heat engine 1 to be cooled, a pump 2 allowing the circulation of the liquid, radiators 3, 3 ′ ensuring the heat exchange and a box, or device, for degassing 4.
Selon les figures 2 et 3, le liquide à dégazer, provenant du radiateur 3', pénètre dans le dispositif de dégazage 4 par un conduit d'amenée 5.According to FIGS. 2 and 3, the liquid to be degassed, coming from the radiator 3 ′, enters the degassing device 4 by a supply pipe 5.
Ce conduit d'amenée 5 du liquide de refroidissement est orienté de façon tangentielle à un premier compartiment supérieur cylindrique 6, permettant ainsi au liquide de s'écouler le long de la paroi du compartiment 6. Ce compartiment cylindrique 6 est protubérant dans un second compartiment inférieur 7 , également cylindrique mais de diamètre supérieur à celui du premier compartiment 6.This coolant supply duct 5 is oriented tangentially to a first cylindrical upper compartment 6, thus allowing the liquid to flow along the wall of the compartment 6. This cylindrical compartment 6 is protruding in a second compartment lower 7, also cylindrical but with a diameter greater than that of the first compartment 6.
Ainsi, le premier compartiment 6 débouche en partie basse dans un second compartiment 7 de sorte que, grâce à l'imbrication des deux compartiments 6 et 7 l'un dans l'autre, les turbulences du liquide de refroidissement restent prisonnières. Bien entendu, les diamètres respectifs des deux compartiments cylindriques 6 et 7 dépendent du débit du liquide à dégazer.Thus, the first compartment 6 opens in the lower part into a second compartment 7 so that, thanks to the nesting of the two compartments 6 and 7 one inside the other, the turbulences of the coolant remain trapped. Of course, the respective diameters of the two cylindrical compartments 6 and 7 depend on the flow rate of the liquid to be degassed.
Le liquide à dégazer, provenant de la culasse, pénètre dans le dispositif de dégazage par un autre conduit d'amenée 8 qui est également orienté tangentiellement, ou perpendiculairement, à la paroi du second compartiment cylindrique 7.The liquid to be degassed, coming from the cylinder head, enters the degassing device by another supply duct 8 which is also oriented tangentially, or perpendicularly, to the wall of the second cylindrical compartment 7.
Ce liquide remonte dans le second compartiment 7 et son mouvement est alors gêné par le mouvement inverse du liquide descendant par l'intermédiaire du premier compartiment cylindrique 6.This liquid rises in the second compartment 7 and its movement is then hampered by the reverse movement of the descending liquid via the first cylindrical compartment 6.
Le second compartiment 7 est équipé en partie basse d'un piétement 9, idéalement constitué par une pluralité de pieds le positionnement en hauteur de telle façon qu'il soit toujours immergé par rapport au niveau du liquide .The second compartment 7 is equipped in the lower part with a base 9, ideally constituted by a plurality of feet positioning in height so that it is always submerged relative to the level of the liquid.
Le compartiment inférieur 7, ayant un diamètre supérieur au compartiment supérieur 6, permet au liquide de se déverser dans une enveloppe extérieure 10 logeant les deux susdits compartiments inférieur 7 et supérieur 6.The lower compartment 7, having a diameter greater than the upper compartment 6, allows the liquid to pour into an outer casing 10 housing the two above-mentioned lower 7 and upper 6 compartments.
Le liquide étant tranquillisé, le dégazage peut s'opérer, par gravité et quitter le dispositif de dégazage par un orifice de sortie 11 situé en partie basse du dispositif de dégazage.The liquid being tranquilized, degassing can take place by gravity and leave the degassing device through an outlet orifice 11 located in the lower part of the degassing device.
Le dispositif de dégazage, selon les figures 4 et 5, est composé d'une demi-enveloppe supérieure 12, d'un compartiment cylindrique inférieur 13 et d'une demi- enveloppe inférieure 14.The degassing device, according to FIGS. 4 and 5, is composed of an upper half-envelope 12, of a lower cylindrical compartment 13 and a lower half-casing 14.
La demi-enveloppe supérieure 12 est de forme sphérique et est équipée d'un conduit d'amenée 5 autorisant l'entrée du liquide à dégazer, débouchant tangentiellement à la paroi du compartiment supérieur 6 et sur la partie haute d'un orifice 15 permettant le remplissage du circuit et vissage d'un bouchon taré.The upper half-envelope 12 is spherical in shape and is equipped with a supply duct 5 allowing the entry of the liquid to be degassed, opening tangentially to the wall of the upper compartment 6 and on the upper part of an orifice 15 allowing filling the circuit and screwing in a tared plug.
La demi-enveloppe supérieure 12 comprend également sur son bord inférieur, un trottoir 16 pour permettre la thermosoudure avec la demi-enveloppe inférieure 14.The upper half-envelope 12 also includes, on its lower edge, a sidewalk 16 to allow heat sealing with the lower half-envelope 14.
Le compartiment inférieur cylindrique 13 est pourvu d'un conduit d'amenée 8 autorisant l'entrée du liquide à dégazer, orienté tangentiellement à la paroi. Pour le positionner, ce compartiment inférieur est équipé de pieds 17 pouvant se clipper à l'intérieur de la demi- enveloppe inférieure 14.The cylindrical lower compartment 13 is provided with a supply duct 8 allowing the entry of the liquid to be degassed, oriented tangentially to the wall. To position it, this lower compartment is equipped with feet 17 which can be clipped inside the lower half-casing 14.
La demi -enveloppe inférieure 14 est équipée d'un conduit d'amenée 18 autorisant également l'entrée du liquide à dégazer, venant se raccorder au conduit d'amenée 8 du susdit compartiment inférieur 13 ; le conduit d'amenée 18 de la demi-enveloppe inférieure 14 présentant un diamètre supérieur à celui du conduit d'amenée 8 du compartiment inférieur 13.The lower half-envelope 14 is equipped with a supply duct 18 also allowing the entry of the liquid to be degassed, coming to be connected to the supply duct 8 of the aforesaid lower compartment 13; the supply duct 18 of the lower half-envelope 14 having a diameter greater than that of the supply duct 8 of the lower compartment 13.
Dans sa partie basse, la demi-enveloppe 14 est pourvue d'un orifice de sortie 11 du liquide à dégazer ainsi que de pions 19 pour le maintien en position du compartiment cylindrique inférieur 13. La demi-enveloppe 14 possède également sur son bord supérieur, un trottoir 20 pour permettre la thermosoudure avec la demi-enveloppe supérieure 12.In its lower part, the half-envelope 14 is provided with an outlet orifice 11 for the liquid to be degassed as well as pins 19 for holding the lower cylindrical compartment in position 13. The half-envelope 14 also has on its upper edge , a sidewalk 20 to allow heat sealing with the upper half-envelope 12.
La conception représentée sur les figures 4 et 5 offre la possibilité de positionner les conduits d'amenée 5, 8 et 18 du liquide en n'importe quel point autour de l'axe des compartiments cylindriques 6 et 13, et ceci de façon indépendante.The design shown in Figures 4 and 5 offers the possibility of positioning the liquid supply conduits 5, 8 and 18 at any point around the axis of the cylindrical compartments 6 and 13, and this independently.
Les figures 7 et 8 représentent un dispositif de dégazage selon une variante de réalisation. Dans ce cas, ledit dispositif comprend une demi-enveloppe supérieure 21 et une demi-enveloppe inférieure 22.Figures 7 and 8 show a degassing device according to an alternative embodiment. In this case, said device comprises an upper half-envelope 21 and a lower half-envelope 22.
La demi-enveloppe supérieure 21 se présente sous forme sphérique et est équipée d'un conduit d'amenée 5 du liquide à dégazer, débouchant tangentiellement, ou perpendiculairement, à la paroi du compartiment cylindrique supérieur 6. Cette demi-enveloppe supérieure 21 est également équipée d'un orifice 15, situé sur sa partie haute, permettant le remplissage du circuit et le vissage d'un bouchon taré. Cette demi-enveloppe 21 possède aussi sur son bord inférieur, un trottoir 16 pour permettre la thermosoudure avec la demi-enveloppe inférieure 22.The upper half-envelope 21 is in spherical form and is equipped with a supply conduit 5 for the liquid to be degassed, opening tangentially, or perpendicularly, to the wall of the upper cylindrical compartment 6. This upper half-envelope 21 is also equipped with an orifice 15, located on its upper part, allowing the filling of the circuit and the screwing of a tared plug. This half-envelope 21 also has on its lower edge, a sidewalk 16 to allow heat sealing with the lower half-envelope 22.
La demi-enveloppe inférieure 22 se présente sous forme sphérique et est équipée d'un conduit d'amenée 8 du liquide à dégazer débouchant tangentiellement à la paroi du compartiment inférieur cylindrique 7. Dans sa partie basse, cette demi-enveloppe inférieure 22 est pourvue d'un orifice de sortie 11 du liquide dégazé. La demi-enveloppe inférieure 22 possède également sur son bord supérieur, un trottoir 20 pour permettre la thermosoudure avec la demi-enveloppe supérieure 21. Le fonctionnement de ce dispositif de dégazage est identique à celui du premier dispositif de dégazage décrit, cependant les compartiments inférieur 22 et supérieur 21 sont positionnés différemment de manière à permettre une réalisation en seulement deux éléments .The lower half-envelope 22 is in spherical form and is equipped with a supply duct 8 for the liquid to be degassed opening tangentially to the wall of the cylindrical lower compartment 7. In its lower part, this lower half-envelope 22 is provided an outlet orifice 11 for the degassed liquid. The lower half-envelope 22 also has on its upper edge, a sidewalk 20 to allow heat sealing with the upper half-envelope 21. The operation of this degassing device is identical to that of the first degassing device described, however the lower 22 and upper 21 compartments are positioned differently so as to allow production in only two elements.
Sur les figures 8 et 9, le dispositif pour le dégazage est composé de deux éléments : une demi-enveloppe supérieure 21 et une demi-enveloppe inférieure 22.In FIGS. 8 and 9, the device for degassing is composed of two elements: an upper half-envelope 21 and a lower half-envelope 22.
La demi-enveloppe supérieure 21, de forme sphérique, est équipée d'un conduit d'amenée 5 du liquide à dégazer, débouchant tangentiellement à la paroi du compartiment supérieur cylindrique 6. La demi-enveloppe supérieure 21 est également équipée d'un deuxième compartiment supérieur cylindrique 6 ' , par exemple identique au premier 6. Sur sa partie haute, cette demi- enveloppe 21 comprend également sur son bord inférieur, un trottoir 16 pour permettre la thermosoudure avec la demi- enveloppe inférieure 22.The upper half-envelope 21, of spherical shape, is equipped with a conduit 5 for supplying the liquid to be degassed, opening tangentially to the wall of the upper cylindrical compartment 6. The upper half-envelope 21 is also equipped with a second cylindrical upper compartment 6 ', for example identical to the first 6. On its upper part, this half-envelope 21 also includes on its lower edge, a sidewalk 16 to allow heat sealing with the lower half-envelope 22.
La demi-enveloppe inférieure 22, de forme sphérique, est équipée d'un conduit d'amenée 8 du liquide à dégazer, débouchant tangentiellement à la paroi d'un compartiment cylindrique inférieure 7. De la même manière que précédemment, la demi-enveloppe inférieure 22 comprend un deuxième cylindre inférieur 7'. Dans sa partie basse, la demi-enveloppe inférieure 22 possède sur son bord supérieur, un trottoir 20 pour permettre la thermosoudure avec la demi-enveloppe supérieure 21.The lower half-envelope 22, of spherical shape, is equipped with a supply conduit 8 for the liquid to be degassed, opening tangentially to the wall of a lower cylindrical compartment 7. In the same manner as previously, the half-envelope lower 22 includes a second lower cylinder 7 '. In its lower part, the lower half-envelope 22 has on its upper edge, a sidewalk 20 to allow heat sealing with the upper half-envelope 21.
Le fonctionnement de cette variante du dispositif de dégazage selon l'invention est similaire à celui de la première variante décrit, cependant les compartiments cylindriques inférieur 7 et supérieur 8 sont respectivement doublés 7' et 8 ' et les conduits d'amenée 5 et 8 du liquide sont séparés, offrant ainsi la possibilité de dégazer des débits plus importants.The operation of this variant of the degassing device according to the invention is similar to that of the first variant described, however the lower 7 and upper 8 cylindrical compartments are respectively lined 7 'and 8' and the liquid supply conduits 5 and 8 are separated, thus offering the possibility of degassing higher flow rates.
L'invention est décrite dans ce qui précède à titre d'exemple. Il est entendu que l'homme du métier est à même de réaliser différentes variantes du dispositif d'étanchéité selon l'invention, en particulier concernant la forme des différents éléments composant le dispositif de dégazage selon l'invention, sans pour autant sortir du cadre du brevet. The invention is described in the foregoing by way of example. It is understood that a person skilled in the art is able to produce different variants of the sealing device according to the invention, in particular concerning the shape of the different elements making up the degassing device according to the invention, without going beyond the ambit of the patent.

Claims

REVENDICATIONS
1. Dispositif de dégazage pour le liquide de refroidissement d'un moteur thermique, notamment pour les moteurs de véhicule automobile, comportant au moins un compartiment inférieur (7) dans lequel est amenée, par l'intermédiaire d'un conduit d'amenée (8), une partie du liquide de refroidissement et au moins un compartiment supérieur (6) dans lequel est amenée, par l'intermédiaire d'un autre conduit d'amenée (5), une autre partie dudit liquide-, caractérisé en ce que les deux compartiments (6) et (7) se présentent sous forme cylindrique, les compartiments (6) et (7) présentant chacun un diamètre différent, et en ce que le compartiment (6) présentant le plus petit diamètre, dénommé diamètre intérieur, est protubérant à l'intérieur du compartiment (7) de plus grand diamètre, dénommé diamètre extérieur.1. Degassing device for the coolant of a heat engine, in particular for motor vehicle engines, comprising at least one lower compartment (7) into which is brought, by means of a supply duct ( 8), part of the coolant and at least one upper compartment (6) into which is brought, by means of another supply duct (5), another part of said liquid, characterized in that the two compartments (6) and (7) are in cylindrical form, the compartments (6) and (7) each having a different diameter, and in that the compartment (6) having the smallest diameter, called the internal diameter, is protruding inside the compartment (7) of larger diameter, called outer diameter.
2. Dispositif de dégazage selon la revendication 1, caractérisé en ce qu'il comprend une enveloppe extérieure (10) dans laquelle les deux susdits compartiments (6) et (7) sont logés.2. degassing device according to claim 1, characterized in that it comprises an outer casing (10) in which the two above-mentioned compartments (6) and (7) are housed.
3. Dispositif de dégazage selon la revendication 2, caractérisé en ce que l'enveloppe extérieure (10) se présente sous forme sphérique.3. degassing device according to claim 2, characterized in that the outer casing (10) is in spherical form.
4. Dispositif de dégazage selon l'une des revendications 2 ou 3, caractérisé en ce que l'enveloppe extérieure (10) est composée d'au moins deux parties (21) et (22), par exemple identique.4. degassing device according to one of claims 2 or 3, characterized in that the outer casing (10) is composed of at least two parts (21) and (22), for example identical.
5. Dispositif de dégazage selon la revendication 4, caractérisé en ce que les deux parties (21) et (22) formant l'enveloppe extérieure sont thermosoudées, par exemple au niveau d'un trottoir (16),5. degassing device according to claim 4, characterized in that the two parts (21) and (22) forming the outer casing are heat-sealed, for example at a sidewalk (16),
(20) ou d'une partie de la bordure équipant les parties(20) or part of the border fitted to the parts
(21) et (22).(21) and (22).
6. Dispositif de dégazage selon la revendication 2, caractérisé en ce que l'enveloppe extérieure (10) ou (21), (22) présente un diamètre correspondant à un volume souhaité, par exemple au moins égal au volume total de liquide à dégazer.6. degassing device according to claim 2, characterized in that the outer casing (10) or (21), (22) has a diameter corresponding to a desired volume, for example at least equal to the total volume of liquid to be degassed .
7. Dispositif- de dégazage selon la revendication 1, caractérisé en ce que le susdit diamètre intérieur est choisi en fonction du débit du liquide à dégazer.7. degassing device according to claim 1, characterized in that the above internal diameter is chosen according to the flow rate of the liquid to be degassed.
8. Dispositif de dégazage selon l'une des revendications précédentes, caractérisé en ce que l'enveloppe extérieure (10) ou (21), (22) ainsi que les deux susdits compartiments (6), (7) sont des thermoplastiques moulés, obtenus par exemple par injection.8. degassing device according to one of the preceding claims, characterized in that the outer casing (10) or (21), (22) and the two above-mentioned compartments (6), (7) are molded thermoplastics, obtained for example by injection.
9. Dispositif de dégazage selon l'une des revendications précédentes, caractérisé en ce que l'enveloppe (10) ou (21), (22) et les deux compartiments ( 6 ) , ( 7 ) sont en propylène .9. degassing device according to one of the preceding claims, characterized in that the casing (10) or (21), (22) and the two compartments (6), (7) are made of propylene.
10. Dispositif de dégazage selon la revendication 1, caractérisé en ce que les conduits d'amenée (5) et (8) des deux susdits compartiments (6) et ( 7 ) sont respectivement orientés perpendiculairement aux deux compartiments , inférieur ( 7 ) et supérieur ( 6 ) .10. degassing device according to claim 1, characterized in that the supply conduits (5) and (8) of the two above-mentioned compartments (6) and (7) are respectively oriented perpendicular to the two compartments, lower (7) and upper (6).
11. Dispositif de dégazage selon les revendications 1 et 2, caractérisé en ce que le compartiment inférieur (7) est supporté sur l'enveloppe extérieure (10) ou (21), (22) par l'intermédiaire d'un piétement ( 9 ) , constitué par exemple par une pluralité de pieds (19).11. degassing device according to claims 1 and 2, characterized in that the lower compartment (7) is supported on the outer casing (10) or (21), (22) by means of a base (9), constituted for example by a plurality of feet (19).
12. Dispositif de dégazage selon la revendication 1, caractérisé en ce qu'il comprend un conduit de sortie (11) pour le liquide de refroidissement de sorte que ce dernier, une fois dégazé, puisse être évacué par l'effet de son propre poids, c'est-à-dire par gravitation.12. degassing device according to claim 1, characterized in that it comprises an outlet duct (11) for the coolant so that the latter, once degassed, can be evacuated by the effect of its own weight , that is to say by gravitation.
13. Dispositif de dégazage selon la revendication 1, caractérisé en ce que les deux compartiments (6), (7) s'étendent verticalement, sensiblement selon un axe central de l'enveloppe extérieure ( 10 ) .13. degassing device according to claim 1, characterized in that the two compartments (6), (7) extend vertically, substantially along a central axis of the outer casing (10).
14. Dispositif de dégazage selon la revendication 1, caractérisé en ce que les deux compartiments (6), (7) s'étendent verticalement, sensiblement à proximité d'un des bords de l'enveloppe extérieure (21), (22).14. degassing device according to claim 1, characterized in that the two compartments (6), (7) extend vertically, substantially near one of the edges of the outer envelope (21), (22).
15. Procédé de dégazage pour le liquide de refroidissement d'un moteur thermique, notamment pour les moteurs de véhicule automobile, grâce à au moins un compartiment cylindrique inférieur (7) dans lequel est amenée, par l'intermédiaire d'un conduit d'amenée (8), une partie du liquide de refroidissement et au moins un compartiment cylindrique supérieur (6) dans lequel est amenée, par l'intermédiaire d'un autre conduit d'amenée (5) , une autre partie dudit liquide, les compartiments ( 6 ) et (7) présentant chacun un diamètre différent, les deux compartiments (6) et (7) étant logés dans une enveloppe extérieure (10) ou (21), (22), le compartiment (6) présentant le plus petit diamètre, dénommé diamètre intérieur, étant protubérant à l'intérieur du compartiment (7) de plus grand diamètre, dénommé diamètre extérieur, caractérisé en ce qu'il comprend les étapes : de déplacement du liquide de refroidissement tangentiellement à la paroi desdits compartiments (6) et (7) afin d'éviter l'émulsion du liquide , - une étape de tranquillisation du liquide de refroidissement, de dégazage du liquide de refroidissement tranquillisé par gravité.15. Degassing process for the coolant of a heat engine, especially for motor vehicle engines, thanks to at least one lower cylindrical compartment (7) into which is brought, by means of a conduit inlet (8), part of the coolant and at least one upper cylindrical compartment (6) into which is brought, via another supply duct (5), another part of said liquid, the compartments (6) and (7) each having a different diameter, the two compartments (6) and (7) being housed in an envelope outer (10) or (21), (22), the compartment (6) having the smallest diameter, called inner diameter, being protruding inside the compartment (7) of larger diameter, called outer diameter, characterized in what it includes the steps: of moving the coolant tangentially to the wall of said compartments (6) and (7) in order to avoid the emulsion of the liquid, - a step of tranquilizing the coolant, degassing the coolant tranquilized by gravity.
16. Procédé de dégazage selon la revendication 15, caractérisé en ce que le déplacement tangentiel du liquide de refroidissement dans chacun des compartiments (6) et (7) s'effectue en sens contraire. 16. degassing method according to claim 15, characterized in that the tangential displacement of the coolant in each of the compartments (6) and (7) takes place in the opposite direction.
EP03760716A 2002-06-21 2003-05-02 Device and method for degassing on motor vehicles Expired - Lifetime EP1554476B1 (en)

Applications Claiming Priority (3)

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FR0207745 2002-06-21
FR0207745A FR2841187B1 (en) 2002-06-21 2002-06-21 DEGASSING DEVICE AND METHOD FOR MOTOR VEHICLES
PCT/FR2003/001379 WO2004001204A1 (en) 2002-06-21 2003-05-02 Device and method for degassing on motor vehicles

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EP1554476B1 EP1554476B1 (en) 2008-10-01

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FR2841187B1 (en) 2004-08-27
BRPI0311682A2 (en) 2016-06-28
CN1662731A (en) 2005-08-31
FR2841187A1 (en) 2003-12-26
WO2004001204A1 (en) 2003-12-31
AU2003249392A1 (en) 2004-01-06
DE60323855D1 (en) 2008-11-13
CN100335760C (en) 2007-09-05
ATE409802T1 (en) 2008-10-15
EP1554476B1 (en) 2008-10-01

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