FR2921435A1 - Fuel cooler arrangement for body of motor vehicle, has opening with portion for directing fresh air flow on fuel circuit i.e. radiator, and another portion for extracting cooled air from circuit when vehicle is in movement - Google Patents
Fuel cooler arrangement for body of motor vehicle, has opening with portion for directing fresh air flow on fuel circuit i.e. radiator, and another portion for extracting cooled air from circuit when vehicle is in movement Download PDFInfo
- Publication number
- FR2921435A1 FR2921435A1 FR0757728A FR0757728A FR2921435A1 FR 2921435 A1 FR2921435 A1 FR 2921435A1 FR 0757728 A FR0757728 A FR 0757728A FR 0757728 A FR0757728 A FR 0757728A FR 2921435 A1 FR2921435 A1 FR 2921435A1
- Authority
- FR
- France
- Prior art keywords
- circuit
- arrangement
- fuel
- vehicle
- air flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/02—Safety or protection arrangements; Arrangements for preventing malfunction in the form of screens or covers
-
- 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)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
AGENCEMENT D'UN REFROIDISSEUR DE CARBURANT SUR LA CAISSE D'UN VEHICULE 5 ARRANGEMENT OF A FUEL COOLER ON THE BODY OF A VEHICLE 5
La présente invention concerne un agencement d'un refroidisseur de carburant sur la caisse d'un véhicule automobile. L'invention propose plus particulièrement un agencement d'un 10 refroidisseur de carburant sur la caisse d'un véhicule dans lequel le carburant est refroidi dans un circuit monté sur la caisse du véhicule, ledit circuit étant recouvert par ledit refroidisseur lui-même fixé sur la caisse du véhicule. The present invention relates to an arrangement of a fuel cooler on the body of a motor vehicle. The invention more particularly proposes an arrangement of a fuel cooler on the body of a vehicle in which the fuel is cooled in a circuit mounted on the vehicle body, said circuit being covered by said cooler itself fixed on the vehicle body.
15 ETAT DE LA TECHNIQUE : STATE OF THE ART:
Le circuit d'alimentation en carburant d'un véhicule automobile comporte notamment un conduit de refoulement qui est raccordé au réservoir, permettant ainsi le retour du carburant 20 en excès vers le réservoir. Le carburant en excès provient du circuit d'alimentation en carburant du moteur, qui comporte notamment une pompe d'injection située à proximité du moteur. Ainsi, lorsque le carburant en excès pénètre dans le circuit de retour sa 25 température est relativement élevée. Le circuit de refoulement est relié au réservoir par un moyen de refroidissement du carburant avant son arrivée dans le réservoir. Selon un mode de réalisation connu, le moyen de 30 refroidissement est monté sous le plancher du véhicule, de manière que le déplacement du véhicule produit un flux d'air permettant ainsi de refroidir le carburant en excès. The fuel supply circuit of a motor vehicle comprises in particular a delivery pipe which is connected to the tank, thus allowing the return of excess fuel to the tank. The excess fuel comes from the fuel supply circuit of the engine, which includes an injection pump located near the engine. Thus, when the excess fuel enters the return circuit, its temperature is relatively high. The delivery circuit is connected to the tank by means of cooling the fuel before it enters the tank. According to a known embodiment, the cooling means is mounted under the floor of the vehicle, so that the movement of the vehicle produces a flow of air thereby cooling the excess fuel.
Ce moyen de refroidissement est généralement un circuit à carburant sous la forme d'un serpentin qui augmente le temps de refroidissement du carburant lorsque celui-ci parcourt le serpentin. This cooling means is generally a fuel circuit in the form of a coil that increases the cooling time of the fuel when it travels the coil.
Cette conception présente toutefois des inconvénients majeurs. En effet, un tel montage du moyen de refroidissement est exposé aux projections extérieures qui peuvent détériorer le circuit à carburant et engendrer une fuite lorsque le véhicule est en mouvement. This design, however, has major disadvantages. Indeed, such a mounting of the cooling means is exposed to external projections that can damage the fuel system and cause a leak when the vehicle is moving.
EXPOSE DE L'INVENTION : SUMMARY OF THE INVENTION
La présente invention a pour but de proposer un agencement d'un refroidisseur de carburant sur la caisse d'un véhicule qui remédie à ces inconvénients en réalisant une protection efficace du circuit à carburant tout en permettant un refroidissement optimisé du carburant. Dans ce but, l'invention propose un agencement du type précédemment décrit, caractérisé en ce que le refroidisseur est un capot comportant au moins une ouverture orientant un flux d'air sur le circuit à carburant lorsque le véhicule est en mouvement. Selon d'autres caractéristiques de l'invention : - le refroidisseur est un capot en matière plastique issu de moulage ; -l'ouverture comporte un premier aménagement pour orienter le flux d'air frais sur le circuit à carburant et un deuxième aménagement pour extraire cet air lorsque le véhicule est en mouvement ; - les premier et deuxième aménagements sont constitués de lames espacées réalisées dans l'ouverture et sensiblement perpendiculaire au flux d'air longitudinal généré lors du mouvement du véhicule ; - les lames du premier aménagement orientant le flux d'air frais sur le circuit à carburant, sont inclinées d'un angle sensiblement supérieur à 90° par rapport au flux d'air ; - les lames du deuxième aménagement extrayant le flux d'air frais du circuit à carburant, sont inclinées d'un angle sensiblement inférieur à 90° par rapport au flux d'air ; - les lames du premier aménagement sont réparties sur sensiblement deux tiers de la longueur de l'ouverture et les lames du deuxième aménagement sont réparties sur sensiblement un tiers de la longueur de l'ouverture ; - deux lames successives sont reliées par au moins un raidisseur de forme filaire réparti sur la longueur des lames pour protéger le circuit des projections extérieures. The present invention aims to provide a fuel cooler arrangement on the body of a vehicle that overcomes these disadvantages by providing effective protection of the fuel system while allowing optimized cooling of the fuel. For this purpose, the invention provides an arrangement of the type previously described, characterized in that the cooler is a cover having at least one opening directing a flow of air on the fuel circuit when the vehicle is in motion. According to other characteristics of the invention: the cooler is a molded plastic cover; the opening comprises a first arrangement for directing the flow of fresh air on the fuel circuit and a second arrangement for extracting this air when the vehicle is in motion; - The first and second arrangements consist of spaced blades made in the opening and substantially perpendicular to the longitudinal air flow generated during the movement of the vehicle; - The blades of the first arrangement directing the flow of fresh air on the fuel circuit, are inclined at an angle substantially greater than 90 ° relative to the air flow; the blades of the second arrangement extracting the flow of fresh air from the fuel circuit are inclined at an angle substantially less than 90 ° with respect to the air flow; - The blades of the first arrangement are spread over substantially two thirds of the length of the opening and the blades of the second arrangement are spread over substantially one third of the length of the opening; - Two successive blades are connected by at least one wire-shaped stiffener distributed over the length of the blades to protect the circuit from external projections.
DESCRIPTION DES FIGURES : DESCRIPTION OF THE FIGURES:
D'autres caractéristiques et avantages de l'invention ressortiront de la description qui suit, laquelle est purement illustrative et non limitative et doit être lue au regard des dessins annexés, sur lesquels : - la figure 1 est une représentation schématique du circuit à carburant fixé sur le dessous de la caisse d'un véhicule ; - la figure 2 est une représentation schématique du même circuit à carburant comportant en plus l'agencement de refroidisseur conforme à l'invention ; - la figure 3 est une représentation schématique en section suivant un plan vertical de l'agencement. Other features and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting and should be read with reference to the accompanying drawings, in which: - Figure 1 is a schematic representation of the fuel circuit fixed on the underside of the body of a vehicle; - Figure 2 is a schematic representation of the same fuel circuit further comprising the cooler arrangement according to the invention; - Figure 3 is a schematic representation in section along a vertical plane of the arrangement.
DESCRIPTION DETAILLEE DE MODES DE REALISATION PREFERES DE L'INVENTION : Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires. On a représenté à la figure 1 un dispositif 3 de refroidissement de carburant, notamment pour refroidir le gasoil provenant du conduit de refoulement du circuit d'alimentation en carburant du moteur diesel d'un véhicule automobile. Le dispositif de refroidissement 3 consiste en un radiateur conventionnel qui est traversé d'une part par le carburant en excès provenant du circuit de refoulement, et d'autre part par un flux d'air F qui permet de refroidir le carburant. Le flux d'air F traversant le radiateur est généralement produit lorsque le véhicule est en mouvement. Ainsi, le radiateur 3 est généralement agencé à l'extérieur de la caisse 2 du véhicule et sous le plancher. Le radiateur 3 est raccordé au réservoir de carburant (non représenté) par un conduit 9 pour que le carburant retourne dans le réservoir à une température réduite. Un conduit 10 provenant du moteur à combustion interne apporte le carburant à refroidir dans le radiateur 3. Le radiateur 3 se présente classiquement sous la forme d'une canalisation tubulaire parcourant un serpentin réalisant plusieurs tours sur lui-même. Une telle configuration du circuit 3 permet d'augmenter le temps de parcours du carburant dans le radiateur et d'obtenir un refroidissement optimal. Cependant, un tel radiateur 3 est situé directement à l'extérieur du véhicule et peut rentrer en contact avec une éventuelle projection extérieure pouvant engendrer une détérioration du circuit. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION: In the following description, like reference numerals designate like parts or having similar functions. FIG. 1 shows a device 3 for cooling the fuel, in particular for cooling the diesel fuel coming from the discharge pipe of the fuel supply circuit of the diesel engine of a motor vehicle. The cooling device 3 consists of a conventional radiator which is traversed on the one hand by the excess fuel coming from the delivery circuit, and on the other hand by an air flow F which makes it possible to cool the fuel. The flow of air F through the radiator is generally produced when the vehicle is in motion. Thus, the radiator 3 is generally arranged outside the body 2 of the vehicle and under the floor. The radiator 3 is connected to the fuel tank (not shown) by a conduit 9 for the fuel to return to the tank at a reduced temperature. A conduit 10 from the internal combustion engine brings the fuel to be cooled in the radiator 3. The radiator 3 is conventionally in the form of a tubular pipe running through a coil performing several turns on itself. Such a configuration of the circuit 3 makes it possible to increase the travel time of the fuel in the radiator and to obtain optimum cooling. However, such a radiator 3 is located directly outside the vehicle and can come into contact with a possible external projection that can cause a deterioration of the circuit.
L'ajout d'un capot de protection fixé lui aussi sur la caisse 2 du véhicule permet de remédier à ces inconvénients mais diminue fortement les prestations de refroidissement du radiateur . C'est pourquoi, conformément à l'invention, un agencement de refroidisseur 1 et réalisé sur le capot de protection pour accroître la capacité de refroidissement. Une ouverture 4 est ainsi réalisée sur l'agencement 1. Par ailleurs, l'ouverture 4 comporte un premier aménagement 5 capable d'orienter le flux d'air F frais sur le circuit 3 et un deuxième aménagement 6 capable d'extraire le flux d'air ayant refroidi le circuit 3. The addition of a protective cover also fixed on the body 2 of the vehicle overcomes these drawbacks but greatly reduces the cooling benefits of the radiator. Therefore, according to the invention, a cooler arrangement 1 and made on the protective cover to increase the cooling capacity. An opening 4 is thus made on the arrangement 1. Furthermore, the opening 4 comprises a first arrangement 5 capable of directing the fresh air flow F on the circuit 3 and a second arrangement 6 capable of extracting the flow of air having cooled the circuit 3.
Les deux aménagements 5 et 6 sont réalisés par des lames 7 ou lamelles espacées pour laisser passer le flux d'air. Ces lames sont sensiblement perpendiculaires au flux d'air F frais et sensiblement coaxiales à l'axe de rotation des roues (non représentées) du véhicule. The two arrangements 5 and 6 are made by blades 7 or lamellae spaced to allow the flow of air. These blades are substantially perpendicular to the fresh air flow F and substantially coaxial with the axis of rotation of the wheels (not shown) of the vehicle.
Comme l'illustre la figure 3, les lames 71 du premier aménagement 5 sont sensiblement inclinées d'un angle supérieur à 90° par rapport à la direction principale du flux d'air F et par rapport au plancher du véhicule. Les lames 72 du deuxième aménagement 6 sont sensiblement inclinées d'un angle inférieur à 90° et par rapport au plancher du véhicule, facilitant ainsi l'orientation du flux vers l'extérieur du véhicule. Dans le mode de réalisation préféré tel que décrit aux figures 2 et 3, l'ouverture 4 comporte des lames 71 du premier aménagement 5 sur deux tiers avant de sa longueur et des lames 72 du deuxième aménagement sur un tiers arrière de sa longueur. Cependant, il sera compris que cette répartition entre les deux aménagements 5 et 6 dans l'ouverture 4 peut évoluer sensiblement sans sortir du domaine de l'invention. Par ailleurs, sur la figure 2 sont représentés entre deux lames successives 71 et 72 des raidisseurs 8 de forme filaire répartis sur la longueur des lames 71 et 72 pour protéger le circuit 3 des projections extérieures. Conformément à l'invention, 5 ces raidisseurs 8 sont sensiblement coaxiaux au flux d'air et à l'axe longitudinal du véhicule. Répartis entre deux lames successives 71 et 72, les raidisseurs 8 constituent un maillage complet de l'ouverture 4 permettant de bloquer les projections extérieures pouvant détériorer le circuit 3. As shown in Figure 3, the blades 71 of the first arrangement 5 are substantially inclined at an angle greater than 90 ° relative to the main direction of the air flow F and relative to the floor of the vehicle. The blades 72 of the second arrangement 6 are substantially inclined at an angle of less than 90 ° and with respect to the floor of the vehicle, thus facilitating the orientation of the flow towards the outside of the vehicle. In the preferred embodiment as described in Figures 2 and 3, the opening 4 comprises blades 71 of the first arrangement 5 on two thirds before its length and blades 72 of the second arrangement on a third back of its length. However, it will be understood that this distribution between the two arrangements 5 and 6 in the opening 4 can change substantially without departing from the scope of the invention. Furthermore, in FIG. 2 are represented between two successive blades 71 and 72 wire-shaped stiffeners 8 distributed over the length of the blades 71 and 72 to protect the circuit 3 from external projections. According to the invention, these stiffeners 8 are substantially coaxial with the air flow and the longitudinal axis of the vehicle. Distributed between two successive blades 71 and 72, the stiffeners 8 constitute a complete mesh of the opening 4 to block external projections that can damage the circuit 3.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0757728A FR2921435A1 (en) | 2007-09-20 | 2007-09-20 | Fuel cooler arrangement for body of motor vehicle, has opening with portion for directing fresh air flow on fuel circuit i.e. radiator, and another portion for extracting cooled air from circuit when vehicle is in movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0757728A FR2921435A1 (en) | 2007-09-20 | 2007-09-20 | Fuel cooler arrangement for body of motor vehicle, has opening with portion for directing fresh air flow on fuel circuit i.e. radiator, and another portion for extracting cooled air from circuit when vehicle is in movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2921435A1 true FR2921435A1 (en) | 2009-03-27 |
Family
ID=39362537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0757728A Pending FR2921435A1 (en) | 2007-09-20 | 2007-09-20 | Fuel cooler arrangement for body of motor vehicle, has opening with portion for directing fresh air flow on fuel circuit i.e. radiator, and another portion for extracting cooled air from circuit when vehicle is in movement |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2921435A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4339936A1 (en) * | 1993-11-24 | 1995-06-01 | Daimler Benz Ag | Heat exchanger system on under carriage of vehicle |
| FR2792684A1 (en) * | 1999-04-22 | 2000-10-27 | Renault | Fuel cooling system for a vehicle, utilizes an air scoop mounted under the floor pan of the vehicle forcing an airflux through to a heat exchanger |
| DE19952782A1 (en) * | 1999-11-03 | 2001-05-23 | Daimler Chrysler Ag | System to reduce aerosol formation in liquid fuel in common-rail IC engines has heat exchanger with guide elements to cool fuel flowing back to tank and to reduce aerosol |
| FR2832790A1 (en) * | 2001-11-26 | 2003-05-30 | Coutier Moulage Gen Ind | Radiator for cooling i.c. engine fuel comprises two aluminum alloy plates defining channel for fuel circulation with end pieces having channel inlet and outlet orifices |
-
2007
- 2007-09-20 FR FR0757728A patent/FR2921435A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4339936A1 (en) * | 1993-11-24 | 1995-06-01 | Daimler Benz Ag | Heat exchanger system on under carriage of vehicle |
| FR2792684A1 (en) * | 1999-04-22 | 2000-10-27 | Renault | Fuel cooling system for a vehicle, utilizes an air scoop mounted under the floor pan of the vehicle forcing an airflux through to a heat exchanger |
| DE19952782A1 (en) * | 1999-11-03 | 2001-05-23 | Daimler Chrysler Ag | System to reduce aerosol formation in liquid fuel in common-rail IC engines has heat exchanger with guide elements to cool fuel flowing back to tank and to reduce aerosol |
| FR2832790A1 (en) * | 2001-11-26 | 2003-05-30 | Coutier Moulage Gen Ind | Radiator for cooling i.c. engine fuel comprises two aluminum alloy plates defining channel for fuel circulation with end pieces having channel inlet and outlet orifices |
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