FR2774635A1 - Cooler for vehicle engine diesel fuel returned to fuel tank - Google Patents
Cooler for vehicle engine diesel fuel returned to fuel tank Download PDFInfo
- Publication number
- FR2774635A1 FR2774635A1 FR9801491A FR9801491A FR2774635A1 FR 2774635 A1 FR2774635 A1 FR 2774635A1 FR 9801491 A FR9801491 A FR 9801491A FR 9801491 A FR9801491 A FR 9801491A FR 2774635 A1 FR2774635 A1 FR 2774635A1
- Authority
- FR
- France
- Prior art keywords
- fuel
- metal plate
- metal
- channels
- fins
- 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
Links
- 239000002828 fuel tank Substances 0.000 title claims abstract description 4
- 239000002283 diesel fuel Substances 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 56
- 239000000446 fuel Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 4
- 238000005219 brazing Methods 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/01—Arrangement of fuel conduits
-
- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
- B60K2015/03414—Arrangements or special measures related to fuel tanks or fuel handling associated with the fuel tank for cooling heated fuel
-
- 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
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0087—Fuel coolers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transportation (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Dispositif de refroidissement du carburant d'un moteur de véhicule automobile
L'invention concerne un dispositif de refroidissement du carburant d'un moteur, notamment d'un moteur diesel, de véhicule automobile.Fuel cooling device for a motor vehicle engine
The invention relates to a device for cooling the fuel of an engine, in particular a diesel engine, of a motor vehicle.
Le dispositif de refroidissement de l'invention est propre à faire partie d'un circuit de carburant comprenant un réservoir, des moyens d'injection et une ligne de retour pour acheminer dans le réservoir le carburant en excès issu des moyens d'injection.The cooling device of the invention is suitable for being part of a fuel circuit comprising a tank, injection means and a return line for conveying excess fuel from the injection means into the tank.
Dans certains types de moteurs, notamment les moteurs diesel à injection directe sous haute pression, il est nécessaire de refroidir le carburant en excès qui n'est pas injecté dans le moteur et qui est acheminé vers le réservoir par la ligne de retour.In certain types of engines, in particular diesel engines with direct injection under high pressure, it is necessary to cool the excess fuel which is not injected into the engine and which is conveyed to the tank by the return line.
En effet, le carburant peut être échauffé de façon importante du fait du cisaillement qu'il subit au cours de sa détente en sortie de la pompe d'injection. Une température trop élevée du carburant n'est pas compatible avec les matériaux utilisés pour les pompes et le réservoir.Indeed, the fuel can be heated up significantly due to the shear it undergoes during its expansion at the outlet of the injection pump. Too high a fuel temperature is not compatible with the materials used for the pumps and the tank.
I1 a déjà été proposé pour cela de refroidir le carburant par un échangeur de chaleur de type air/carburant intégré sur la ligne de retour et propre à être disposé sous la caisse du véhicule. La ventilation de l'échangeur est alors assurée par la vitesse du véhicule, ce qui permet de refroidir le carburant avant son retour vers le réservoir. I1 has already been proposed for this to cool the fuel by an air / fuel type heat exchanger integrated on the return line and suitable for being placed under the vehicle body. The ventilation of the exchanger is then ensured by the speed of the vehicle, which makes it possible to cool the fuel before it returns to the tank.
Dans une solution proposée, cet échangeur de chaleur est réalisé sous la forme d'un simple tube en serpentin intégré sur la ligne de retour.In a proposed solution, this heat exchanger is produced in the form of a simple serpentine tube integrated on the return line.
Malheureusement, cette solution n'assure qu'un faible refroidissement. Par conséquent, si l'on veut accroître les performances thermiques de ce tube en serpentin, il est nécessaire de l'allonger considérablement, ce qui crée alors des pertes de charge.Unfortunately, this solution only provides low cooling. Consequently, if it is wished to increase the thermal performance of this serpentine tube, it is necessary to lengthen it considerably, which then creates pressure drops.
I1 a été proposé aussi de munir le tube en serpentin d'une multiplicité de fines ailettes métalliques disposées parallèlement entre elles et perpendiculairement au tube. Cette solution permet, certes, d'accroître les performances thermiques de l'échangeur, mais elle augmente la fragilité de l'échangeur. I1 has also been proposed to provide the serpentine tube with a multiplicity of fine metal fins arranged parallel to each other and perpendicular to the tube. This solution certainly makes it possible to increase the thermal performance of the exchanger, but it increases the fragility of the exchanger.
Cette solution n'est donc pas acceptable du fait que l'échangeur est disposé sous la caisse du véhicule et donc exposé à des chocs ou des projections.This solution is therefore not acceptable because the exchanger is placed under the vehicle body and therefore exposed to shocks or projections.
L'invention a notamment pour but de surmonter les inconvénients précités.The object of the invention is in particular to overcome the aforementioned drawbacks.
Elle propose à cet effet un dispositif du type défini en introduction, comprenant un échangeur de chaleur de type air/carburant intégré sur une ligne de retour de carburant vers un réservoir de carburant et propre à être disposé sous la caisse du véhicule.To this end, it proposes a device of the type defined in the introduction, comprising an air / fuel type heat exchanger integrated on a fuel return line to a fuel tank and suitable for being placed under the vehicle body.
Selon une définition générale de l'invention, l'échangeur de chaleur comprend une plaque métallique du type persienne, munie d'ouvertures entourées par des ailettes, et comportant au moins un tube de circulation du carburant.According to a general definition of the invention, the heat exchanger comprises a metal plate of the louver type, provided with openings surrounded by fins, and comprising at least one fuel circulation tube.
Ainsi, le dispositif comprend au moins un tube porté par une plaque métallique du type persienne, c'est-à-dire une plaque métallique monobloc ajourée par des ouvertures entourées par des ailettes.Thus, the device comprises at least one tube carried by a metal plate of the louver type, that is to say a one-piece metal plate perforated by openings surrounded by fins.
Une telle plaque métallique offre notamment l'avantage de combiner une bonne solidité mécanique et de bonnes performances thermiques, en augmentant notablement la surface d'échange de chaleur du ou des tubes qu'elle supporte. Such a metal plate notably offers the advantage of combining good mechanical strength and good thermal performance, by notably increasing the heat exchange surface of the tube or tubes which it supports.
Dans une première forme de réalisation de l'invention, la plaque métallique comporte un tube en serpentin, rapporté sur ladite plaque. Ce tube en serpentin est avantageusement brasé sur la plaque métallique.In a first embodiment of the invention, the metal plate comprises a serpentine tube, attached to said plate. This serpentine tube is advantageously brazed on the metal plate.
Ce tube en serpentin est avantageusement muni d'une tubulure d'entrée et d'une tubulure de sortie qui débouchent d'un même côté de la plaque métallique.This serpentine tube is advantageously provided with an inlet pipe and an outlet pipe which open on the same side of the metal plate.
Dans une deuxième forme de réalisation de l'invention, la plaque métallique comprend des canaux ouverts conformés et est munie d'un couvercle métallique rapporté pour fermer les canaux et délimiter ainsi des tubes de circulation du carburant.In a second embodiment of the invention, the metal plate comprises shaped open channels and is provided with an attached metal cover to close the channels and thus delimit fuel circulation tubes.
Ainsi, les tubes sont formés directement dans la plaque métallique et sont fermés par un couvercle métallique rapporté.Thus, the tubes are formed directly in the metal plate and are closed by an attached metal cover.
Dans cette forme de réalisation de l'invention, on prévoit avantageusement que les ouvertures et les ailettes de la plaque métallique sont formées dans des régions comprises entre les canaux.In this embodiment of the invention, it is advantageously provided that the openings and the fins of the metal plate are formed in regions comprised between the channels.
Selon une autre caractéristique de l'invention, ce couvercle métallique est une plaque comportant des parties pleines propres à fermer les canaux et des parties découpées situées en vis-à-vis des ouvertures et des ailettes.According to another characteristic of the invention, this metal cover is a plate comprising solid parts suitable for closing the channels and cut parts located opposite the openings and the fins.
De façon avantageuse, les canaux sont parallèles et s'étendent entre deux extrémités opposées de la plaque métallique.Advantageously, the channels are parallel and extend between two opposite ends of the metal plate.
Selon une autre caractéristique de l'invention, le couvercle métallique comporte deux régions d'extrémité, conformées pour définir, conjointement avec la plaque métallique, deux boîtes collectrices munies de tubulures pour l'entrée et la sortie du carburant. According to another characteristic of the invention, the metal cover has two end regions, shaped to define, together with the metal plate, two manifolds provided with pipes for the inlet and the outlet of the fuel.
Dans cette deuxième forme de réalisation de l'invention, le couvercle métallique est avantageusement brasé sur la plaque métallique.In this second embodiment of the invention, the metal cover is advantageously brazed on the metal plate.
Le cas échéant, le dispositif peut comprendre au moins une cloison prévue dans un canal pour permettre au carburant de circuler dans les tubes en une ou plusieurs passes.Where appropriate, the device can comprise at least one partition provided in a channel to allow fuel to circulate in the tubes in one or more passes.
Dans les différentes formes de réalisation de l'invention, la plaque métallique est avantageusement formée par emboutissage et découpage d'une tôle métallique, en particulier d'une tôle en aluminium.In the various embodiments of the invention, the metal plate is advantageously formed by stamping and cutting a metal sheet, in particular an aluminum sheet.
Dans la description qui suit, faite seulement à titre d'exemple, on se réfère aux dessins annexés, sur lesquels - la figure 1 représente schématiquement un dispositif de refroidissement de carburant selon l'invention intégré dans un circuit de carburant de véhicule automobile - la figure 2 est une vue en perspective de dessus d'un dispositif de refroidissement selon une première forme de réalisation de l'invention - la figure 3 est une vue en perspective de dessous d'un dispositif de refroidissement selon une deuxième forme de réalisation de l'invention - la figure 4 est une vue en coupe longitudinale du dispositif de la figure 3 ; et - la figure 5 est une vue en coupe, à échelle agrandie, selon la ligne V-V de la figure 4.In the description which follows, given solely by way of example, reference is made to the appended drawings, in which - FIG. 1 schematically represents a fuel cooling device according to the invention integrated in a fuel circuit of a motor vehicle - the Figure 2 is a perspective view from above of a cooling device according to a first embodiment of the invention - Figure 3 is a perspective view from below of a cooling device according to a second embodiment of the invention 'invention - Figure 4 is a longitudinal sectional view of the device of Figure 3; and - Figure 5 is a sectional view, on an enlarged scale, along the line V-V of Figure 4.
La représentation schématique de la figure 1 montre un véhicule automobile 1 animé par un moteur 2, dans l'exemple du type diesel, muni de moyens d'injection 3. The schematic representation of FIG. 1 shows a motor vehicle 1 driven by an engine 2, in the example of the diesel type, provided with injection means 3.
Le véhicule comprend un circuit de carburant qui comporte, pour l'essentiel, un réservoir 4 destiné à être rempli de gazole, une ligne d'alimentation 5 allant du réservoir aux moyens d'injection 3 et une ligne de retour 6 allant des moyens d'injection 3 au réservoir 4. Le circuit comprend en outre d'autres composants (pompe, filtre, etc.) qui ne sont pas représentés à des fins de simplification.The vehicle comprises a fuel circuit which essentially comprises a tank 4 intended to be filled with diesel, a supply line 5 going from the tank to the injection means 3 and a return line 6 going from the means d injection 3 to the reservoir 4. The circuit further comprises other components (pump, filter, etc.) which are not shown for the sake of simplification.
Sur la ligne de retour 6 est intégré un échangeur de chaleur 7 de type air/carburant disposé sous la caisse du véhicule et servant au refroidissement du carburant. En effet, les moyens d'injection 3 sont prévus pour injecter dans le moteur 2 un carburant à très haute pression. Le carburant en excès qui retourne vers le réservoir 4 à température élevée risquerait, s'il n'était pas refroidi, d'endommager certains composants du circuit. L'échangeur 7 est ainsi balayé par un flux d'air
F résultant de la vitesse du véhicule.On the return line 6 is integrated an air / fuel type heat exchanger 7 arranged under the vehicle body and used for cooling the fuel. In fact, the injection means 3 are provided for injecting into the engine 2 a fuel at very high pressure. The excess fuel which returns to the tank 4 at high temperature could, if it were not cooled, damage certain components of the circuit. The exchanger 7 is thus swept by an air flow
F resulting from the speed of the vehicle.
Dans la forme de réalisation de la figure 2, l'échangeur de chaleur 7 comprend une plaque métallique 8 du type persienne réalisée en une seule pièce par emboutissage et découpage d'une tôle métallique, avantageusement à base d'aluminium.In the embodiment of Figure 2, the heat exchanger 7 comprises a metal plate 8 of the louver type made in one piece by stamping and cutting of a metal sheet, preferably based on aluminum.
Cette tôle métallique 8 comprend un fond plat 9 de forme générale rectangulaire entouré, sur trois côtés, par deux bords relevés longitudinaux 10 et 11, parallèles entre eux, et par un bord transversal 12. Sur la plaque métallique 8 est rapporté, par brasage, un tube 13 de circulation de carburant, réalisé en serpentin.This metal sheet 8 comprises a flat bottom 9 of generally rectangular shape surrounded, on three sides, by two longitudinal raised edges 10 and 11, parallel to each other, and by a transverse edge 12. On the metal plate 8 is attached, by brazing, a fuel circulation tube 13, made of a serpentine.
Ce tube en serpentin comprend quatre branches 14, 15, 16 et 17 parallèles entre elles, les branches 14 et 17 étant situées respectivement contre les bords relevés 10 et 11. Ces branches sont reliées d'un côté par deux coudes 18 et d'un autre côté par un coude 19 et par un coude 20 s'étendant le long du bord relevé 12. Le tube est muni de deux extrémités 21 et 22, formant tubulures, servant respectivement à l'entrée et à la sortie du carburant (ou inversement). Ces deux tubulures débouchent d'un même côté de la plaque métallique, c'est-à-dire du côté du bord relevé 10. Ces tubulures passent par une découpe du bord relevé 10 et sont protégées par un boîtier 23.This serpentine tube comprises four branches 14, 15, 16 and 17 parallel to each other, the branches 14 and 17 being located respectively against the raised edges 10 and 11. These branches are connected on one side by two elbows 18 and a on the other side by a bend 19 and by a bend 20 extending along the raised edge 12. The tube is provided with two ends 21 and 22, forming pipes, serving respectively for the inlet and outlet of the fuel (or vice versa ). These two pipes open on the same side of the metal plate, that is to say on the side of the raised edge 10. These pipes pass through a cutout of the raised edge 10 and are protected by a housing 23.
Des agrafes, 24 obtenues par découpage et repliage des bords relevés 10 et 11 contribuent au maintien du tube en serpentin 13.Staples 24 obtained by cutting and folding the raised edges 10 and 11 contribute to maintaining the serpentine tube 13.
Le fond 8 de la plaque 7 est ajouré à la manière d'une persienne et comporte des ouvertures 25 entourées par des ailettes 26. Les ouvertures et les ailettes sont formées dans des régions du fond 8 en dehors des branches 14, 15, 16 et 17 du tube. De plus, le fond 8 comporte trois ouvertures 27 destinées à la fixation du dispositif sous la caisse du véhicule, de préférence par l'intermédiaire de blocs amortisseurs.The bottom 8 of the plate 7 is perforated in the manner of a louver and has openings 25 surrounded by fins 26. The openings and the fins are formed in regions of the bottom 8 outside the branches 14, 15, 16 and 17 of the tube. In addition, the bottom 8 has three openings 27 for fixing the device under the vehicle body, preferably by means of damping blocks.
Le dispositif des figures 3 à 5 comprend également une plaque métallique 28 du type persienne, présentant une forme générale rectangulaire et obtenue par emboutissage et découpage d'une tôle métallique, de préférence à base d'aluminium. La plaque métallique 28 comprend un fond rectangulaire dans lequel sont conformés directement des canaux ouverts 29 à section en forme de U. Ces canaux ouverts 29, au nombre de 7 dans l'exemple, s'étendent parallèlement entre eux et parallèlement à deux bords relevés longitudinaux 30 (figure 5) qui bordent le fond de la plaque métallique 8.The device of FIGS. 3 to 5 also comprises a metal plate 28 of the louver type, having a generally rectangular shape and obtained by stamping and cutting a metal sheet, preferably based on aluminum. The metal plate 28 comprises a rectangular bottom in which open channels 29 of U-shaped section are directly shaped. These open channels 29, 7 in number in the example, extend parallel to each other and parallel to two raised edges longitudinal 30 (FIG. 5) which border the bottom of the metal plate 8.
Dans les régions comprises entre les canaux sont prévues des ouvertures 31 entourées par des ailettes 32 et définissant des passages d'air à la manière d'une persienne. Seule une partie des ailettes est représentée sur la figure 3.In the regions between the channels are provided openings 31 surrounded by fins 32 and defining air passages in the manner of a louver. Only part of the fins is shown in FIG. 3.
Le fond de la plaque métallique 28 comporte par ailleurs quatre trous 33 (figure 3) servant à la fixation du dispositif sous la caisse du véhicule.The bottom of the metal plate 28 also has four holes 33 (Figure 3) for fixing the device under the vehicle body.
Le dispositif comprend en outre un couvercle métallique 34 rapporté sur la plaque métallique 28 pour fermer les canaux 29 et délimiter ainsi des tubes de circulation 35 (figure 5) qui s'étendent parallèlement entre eux et entre deux extrémi tés opposées 36 et 37 de la plaque métallique. Le couvercle 34 comporte des parties pleines 38 propres à fermer les canaux 29 et des parties découpées 39 situées en vis-à-vis des ouvertures 31 et des ailettes 32 (figure 4).The device further comprises a metal cover 34 attached to the metal plate 28 to close the channels 29 and thus delimit circulation tubes 35 (Figure 5) which extend parallel to each other and between two opposite ends 36 and 37 of the metal plate. The cover 34 has solid parts 38 suitable for closing the channels 29 and cut parts 39 located opposite the openings 31 and the fins 32 (FIG. 4).
Le couvercle 34 est formé d'une tôle métallique emboutie et découpée, avantageusement à base d'aluminium, qui présente une forme générale rectangulaire et qui est destinée à être rapportée sur la plaque métallique 28, en venant s'encastrer entre les bords relevés 30 de cette dernière (figure 5). La plaque métallique 28 et le couvercle métallique 34 sont assemblés entre eux par brasage pour constituer un ensemble unitaire. Le couvercle métallique comporte deux régions d'extrémités 41 et 42 conformées pour définir, conjointement avec la plaque métallique, deux boîtes collectrices 43 et 44 (figure 4) munies respectivement de deux tubulures 45 et 46 pour l'entrée et la sortie du carburant.The cover 34 is formed from a stamped and cut metal sheet, advantageously based on aluminum, which has a generally rectangular shape and which is intended to be attached to the metal plate 28, being fitted between the raised edges 30 of the latter (Figure 5). The metal plate 28 and the metal cover 34 are assembled together by brazing to form a unitary assembly. The metal cover has two end regions 41 and 42 shaped to define, together with the metal plate, two manifolds 43 and 44 (Figure 4) provided with two pipes 45 and 46 respectively for the fuel inlet and outlet.
Dans la forme de réalisation représentée aux figures 3 à 5, les canaux permettent une circulation du carburant en une seule passe, d'une extrémité à l'autre. Autrement dit, la circulation du carburant s'effectue dans des tubes en parallèle.In the embodiment shown in Figures 3 to 5, the channels allow fuel to flow in a single pass, from one end to the other. In other words, the circulation of fuel takes place in parallel tubes.
Il est possible aussi de définir d'autres modes de circulation en plusieurs passes, à condition de prévoir une ou plusieurs cloisons dans un tube et/ou une boîte collectrice pour permettre une circulation en une ou plusieurs passes.It is also possible to define other modes of circulation in several passes, provided that one or more partitions are provided in a tube and / or a manifold to allow circulation in one or more passes.
L'invention permet ainsi de réaliser un dispositif de refroidissement de conception robuste et de performances thermiques élevées par unité de surface.The invention thus makes it possible to produce a cooling device of robust design and high thermal performance per unit of area.
Bien entendu, l'invention est susceptible de nombreuses variantes en ce qui concerne la structure de la plaque métallique du type persienne et du ou des tubes qu'elle comporte. Of course, the invention is susceptible of numerous variants as regards the structure of the metal plate of the louver type and of the tube or tubes which it comprises.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9801491A FR2774635B1 (en) | 1998-02-09 | 1998-02-09 | FUEL COOLING DEVICE FOR A MOTOR VEHICLE ENGINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9801491A FR2774635B1 (en) | 1998-02-09 | 1998-02-09 | FUEL COOLING DEVICE FOR A MOTOR VEHICLE ENGINE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2774635A1 true FR2774635A1 (en) | 1999-08-13 |
| FR2774635B1 FR2774635B1 (en) | 2000-04-21 |
Family
ID=9522741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9801491A Expired - Fee Related FR2774635B1 (en) | 1998-02-09 | 1998-02-09 | FUEL COOLING DEVICE FOR A MOTOR VEHICLE ENGINE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2774635B1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002050419A1 (en) * | 2000-12-21 | 2002-06-27 | Dana Canada Corporation | Finned plate heat exchanger |
| US7011142B2 (en) | 2000-12-21 | 2006-03-14 | Dana Canada Corporation | Finned plate heat exchanger |
| US7025127B2 (en) | 2002-07-05 | 2006-04-11 | Dana Canada Corporation | Baffled surface cooled heat exchanger |
| US7182125B2 (en) | 2003-11-28 | 2007-02-27 | Dana Canada Corporation | Low profile heat exchanger with notched turbulizer |
| US7213638B2 (en) | 2003-04-11 | 2007-05-08 | Dana Canada Corporation | Heat exchanger with flow circuiting end caps |
| EP1862753A1 (en) * | 2006-06-01 | 2007-12-05 | Nobel Plastiques | Heat exchnager with a corrugated tube in the form of a serpentine |
| DE102009030571A1 (en) * | 2009-06-26 | 2010-12-30 | GM Global Technology Operations, Inc., Detroit | Cooling arrangement i.e. cooling module, for use in lower floor arrangement of motor vehicle, has heat exchangers through which cooling medium flows, where exchangers are arranged in section below vehicle floor |
| CN108791115A (en) * | 2018-06-15 | 2018-11-13 | 无锡市东鹏金属制品有限公司 | A kind of automobile protection bottom plate with heat sinking function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0539638A1 (en) * | 1990-10-22 | 1993-05-05 | Institut Français du Pétrole | Heat exchanger having tubes jointed by expanded sheet metal |
| DE29715878U1 (en) * | 1997-09-04 | 1997-10-23 | Sander KG GmbH & Co., 77871 Renchen | Radiator for diesel oil |
| DE19619934A1 (en) * | 1996-05-17 | 1997-11-20 | Bayerische Motoren Werke Ag | Fuel line system |
-
1998
- 1998-02-09 FR FR9801491A patent/FR2774635B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0539638A1 (en) * | 1990-10-22 | 1993-05-05 | Institut Français du Pétrole | Heat exchanger having tubes jointed by expanded sheet metal |
| DE19619934A1 (en) * | 1996-05-17 | 1997-11-20 | Bayerische Motoren Werke Ag | Fuel line system |
| DE29715878U1 (en) * | 1997-09-04 | 1997-10-23 | Sander KG GmbH & Co., 77871 Renchen | Radiator for diesel oil |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002050419A1 (en) * | 2000-12-21 | 2002-06-27 | Dana Canada Corporation | Finned plate heat exchanger |
| US6536516B2 (en) | 2000-12-21 | 2003-03-25 | Long Manufacturing Ltd. | Finned plate heat exchanger |
| US7011142B2 (en) | 2000-12-21 | 2006-03-14 | Dana Canada Corporation | Finned plate heat exchanger |
| CN100343500C (en) * | 2000-12-21 | 2007-10-17 | 达纳加拿大公司 | Finned plate heat exchanger |
| US7025127B2 (en) | 2002-07-05 | 2006-04-11 | Dana Canada Corporation | Baffled surface cooled heat exchanger |
| US7213638B2 (en) | 2003-04-11 | 2007-05-08 | Dana Canada Corporation | Heat exchanger with flow circuiting end caps |
| US7182125B2 (en) | 2003-11-28 | 2007-02-27 | Dana Canada Corporation | Low profile heat exchanger with notched turbulizer |
| EP1862753A1 (en) * | 2006-06-01 | 2007-12-05 | Nobel Plastiques | Heat exchnager with a corrugated tube in the form of a serpentine |
| FR2901870A1 (en) * | 2006-06-01 | 2007-12-07 | Nobel Plastiques Soc Par Actio | THERMAL EXCHANGER HAVING A TUBE RING |
| DE102009030571A1 (en) * | 2009-06-26 | 2010-12-30 | GM Global Technology Operations, Inc., Detroit | Cooling arrangement i.e. cooling module, for use in lower floor arrangement of motor vehicle, has heat exchangers through which cooling medium flows, where exchangers are arranged in section below vehicle floor |
| CN108791115A (en) * | 2018-06-15 | 2018-11-13 | 无锡市东鹏金属制品有限公司 | A kind of automobile protection bottom plate with heat sinking function |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2774635B1 (en) | 2000-04-21 |
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| ST | Notification of lapse |
Effective date: 20081031 |