EP0702142B1 - Ensemble de pompage incorporant un régulateur de pression, pour réservoir de carburant de véhicule automobile et réservoir ainsi équipé - Google Patents
Ensemble de pompage incorporant un régulateur de pression, pour réservoir de carburant de véhicule automobile et réservoir ainsi équipé Download PDFInfo
- Publication number
- EP0702142B1 EP0702142B1 EP95402079A EP95402079A EP0702142B1 EP 0702142 B1 EP0702142 B1 EP 0702142B1 EP 95402079 A EP95402079 A EP 95402079A EP 95402079 A EP95402079 A EP 95402079A EP 0702142 B1 EP0702142 B1 EP 0702142B1
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- EP
- European Patent Office
- Prior art keywords
- filter
- fact
- pump
- regulator
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
- F02M37/0029—Pressure regulator in the low pressure fuel system
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
- F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/44—Filters structurally associated with pumps
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/46—Filters structurally associated with pressure regulators
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/50—Filters arranged in or on fuel tanks
Definitions
- the present invention relates to the field of devices supply of fuel to internal combustion engines on motor vehicles.
- conventional fuel supply systems for engines with internal combustion include a pump 10 which takes the fuel in a tank 12, and directs this fuel to the area of use, by example the injectors or the intake manifold 14, via supply line 16. Excess fuel is returned to tank 12 using return piping 18.
- Pump 10 generally includes an upstream filter 11. In addition, a downstream filter 13 is generally placed at the outlet of pump 10, on piping 16 feed.
- This classic arrangement called a loop, represented on the Figure 1, has the disadvantage of leading to a warming of the fuel passing through the zone of use 14 and brought back to the tank 12 through the return duct 18.
- a pressure regulator 20 is preferably integrated on the supply line 16. This pressure regulator 20 ensures the return excess fuel to tank 12.
- This pressure regulator 20 has its input connected to the supply line 16, generally downstream of the filter 13, by a bypass duct 15. The output of the regulator 20 opens into the reservoir 12.
- the output of the pump 106 is connected to the input of the filter 13 outside the tank, via conduit 102.
- the outlet of the filter 13 is connected to the injectors 14. It is also connected to the inlet of the regulator 20, via conduit 103, which is connected to the bypass duct 15 shown in FIG. 2.
- Document US-A-5195494 describes a supply device in internal combustion engine fuel comprising a set of drawing comprising a fixing base designed to be fixed on a wall of a fuel tank, a pump, at least one duct supply connected to the pump outlet, a filter placed on this conduit supply and a pressure regulator associated with the pump, the pressure regulator being attached to said pump outlet and the filter being fixed on the base of the drawing assembly, said filter comprising a filtering structure in the shape of a crown.
- US-A-3695438 describes a pressure regulator designed for an engine fuel supply device combustion, said regulator being placed downstream of a filter and the filter comprising a filtering structure in the form of a crown fed by outside via the pump outlet, while the regulator is placed above of the filter structure.
- Document US-A-5078167 describes a variant according to which the drawing assembly comprises a fixing base designed to be fixed to the wall of a fuel tank, a pump, a pipe supply connected to the pump outlet, a filter placed on this conduit supply and a pressure regulator associated with the pump, placed between pump outlet and filter inlet, pressure regulator and filter being fixed on the base of the drawing assembly and the regulator of pressure being supported by the filter housing.
- the present invention now aims to improve existing fuel delivery systems.
- a fuel supply device for internal combustion engine type comprising a drawing assembly comprising a base of fastening designed to be fixed to the wall of a fuel tank, a pump, at least one supply duct connected to the outlet of the pump, a filter placed on this supply pipe and a regulator of pressure associated with the pump, the pressure regulator and the filter being fixed on the base of the drawing assembly, and the pressure regulator being supported by the filter housing, characterized in that the pressure regulator is placed downstream of the filter and the filter includes a filter structure in the shape of a crown, supplied from the outside by the pump outlet, while the pressure regulator is placed inside the central part of the filter structure.
- the invention also relates to fuel tanks. thus equipped.
- This device is designed to be placed in a motor vehicle fuel, which is only partially shown in Figure 4 attached, under the general reference R.
- Such a fuel tank R can be the subject of many variants.
- the device 200 comprises a base 210 which supports a drawing assembly comprising essentially a pump 220, a filter 250 and a pressure regulator 300.
- the base 210 is adapted to be fixed on the upper wall R1 of the tank R, opposite an access orifice formed therein.
- the base 210 is preferably made of plastic. Its geometry can be the subject of numerous variant embodiments. She is from generally circular, centered around a vertical axis.
- the base 210 can be fixed on the upper wall R1 of the tank by any suitable means. It is preferably an assembly removable.
- the base 210 is advantageously fixed by means of a ring held by screwing or locking with interposition of a seal sealing ring, on the upper wall R1 of the reservoir R.
- the base 210 serves as a support for an outlet pipe of fuel 212.
- the base 210 also serves as a support for connections electrical 214. These electrical connections, schematically shown in Figure 4, are intended to allow, on the one hand the supply of the pump 220, on the other hand the establishment of a connection electric with a 400 gauging device, preferably fitted the drawing assembly 200.
- Connections 214 can be the subject of numerous variants. Their number depends on the nature of the gauging means 400 and of the pump 220 used.
- the base 210 is overmolded on these connections 214.
- the base upper 210 is provided with an underlying mount 216, formed of preferably a cylindrical barrel, adapted to support all of drawing 200.
- the pump 220 can be the subject of numerous variants of production. It is preferably a conventional control pump electric.
- the pump 220 is advantageously placed in a bowl 240 serving as a fuel reserve, connected by its upper end to the base of the frame 216.
- the bowl 240 can thus be rigidly fixed on the mount 216.
- the bowl 240 is connected to the frame 216 by means of a telescopic mounting, so that the bowl 240 is constantly stressed against the lower wall R2 of the tank.
- the reserve bowl 240 can be fed by any suitable means, for example using a booster pump, or a pump such as a jet pump, or even using a non-return valve, as shown schematically under the reference 242, in the bottom of the bowl 240, for allow fuel to penetrate from tank R to bowl 240 when the fuel level in the tank R is higher than that of the fuel in the bowl 240, while on the contrary prohibiting the flow of the fuel from bowl 240 to tank R.
- a booster pump or a pump such as a jet pump
- a non-return valve as shown schematically under the reference 242
- the inlet of the pump 220 is placed near the bottom of the bowl 240, i.e. near the bottom of the reservoir R.
- the inlet of the pump 220 is preferably provided with an upstream filter 222 adjacent to the bottom of the bowl 240.
- the outlet of the pump 220 is preferably provided with a nozzle.
- vertical 224 tightly connected to the inlet of the filter 250.
- the filter 250 includes a housing 252, advantageously cylindrical, placed in the frame 216, on the top of the bowl 240.
- the box 250 can be the subject of many variants. It is made up of preferably by assembling two cylindrical shells, in material plastic or metal.
- the housing 252 houses a filter structure 254 in the form of crowned.
- the filter structure 254 can be formed by any means appropriate. It is preferably a conventional filter structure with paper base, shaped like a labyrinth for the fuel to be filtered.
- the two sides 253, 255 of the filter structure in a crown 254 are tightly connected to the facing walls respectively lower 251 and upper 258 of the housing 250.
- the outlet nozzle 224 of the pump 220 opens into the radially outer inlet chamber, 256, of the filter 250.
- the regulator 300 is placed in the internal chamber 257.
- the bottom wall 251 of the filter housing 252 250 has, of preferably in its center, and in internal chamber 257, a structure 260 generally cylindrical and stepped which supports the regulator 300. More specifically, according to the particular embodiment shown in FIG. 4, this support structure 260 comprises two sleeves 262, 264, cylindrical, connected by a radial recess 266.
- the sleeve 262 opens towards the bottom of the bowl 240.
- the sheath 264 superimposed on the sheath 262 has a larger diameter than the latter.
- Scabbard 264 also has at least one through bore 265 allowing a communication between its internal volume and internal chamber 257 of the filter 250.
- the pressure regulator 300 is placed downstream of the filter 250, more specifically of the filter structure 254, so that it receives only filtered fuel.
- the regulated output of regulator 300 communicates with room 257.
- the regulator output 300 corresponding to the fuel overflow communicates with the scabbard 262 and from there with bowl 240.
- the upper wall 258 of the housing 252 of the filter 250 is it provided with a tip 270 tightly connected to the tip 212 carried by the base 210.
- the end piece 270 communicates with the outlet chamber 257 of the filter.
- the fuel is directed, from this nozzle 212, to the zone of use, injector (s) or carburetor (s), by any suitable conduit.
- the fuel used follows the following circuit: pump 220, outer chamber 256 of the filter, filter structure 254, inner chamber 257 of the filter 250, then connection between the nozzles 270 and 212.
- Sealing means 226 are provided between the outlet 224 of the pump 220 and the filter inlet 250. These sealed connection means can be formed for example of a flexible tube. However, from preferably, the outlet nozzle 224 of the pump 220 is arranged in the form waterproof telescopic mounting in the base of the inlet chamber radially external 256 of the filter 250.
- sealing means 226 can be the subject of many variants. he can be simple O-rings. However, preferably, these means are made up of at least one lip seal, very preferably a joint having a cross section in V to concavity oriented axially. In other words, such a joint includes two elastic lips inclined together in a V and oriented substantially parallel to the central axis of the joint.
- the means of connection between the outlet nozzle 270 of the filter 250 and the end piece 212 carried by the base 210 can be compared to those provided between outlet 224 of pump 220 and inlet of filter 250.
- connection between the outlet nozzle 270 of the filter 250 and the endpiece 212 carried by the base 210 can be provided by a conduit flexible 272 as illustrated in FIG. 4.
- the end piece 270 can be arranged in sealed telescopic mounting in the end piece 212 carried by the base 210, with the interposition of a seal, such a joint with two lips having a cross section in V, as described previously for pump output 220.
- the pressure regulator 300 is preferably a pressure regulator coaxial input / output.
- the pressure regulation function is obtained, using regulator 300, bypass flow, regulated by a membrane supporting the combined action of the liquid whose pressure is regulated, and a calibration spring.
- the regulator 300 comprises a body 302 generally cylindrical of revolution about a vertical axis 304.
- the body 302 is provided with a flange 310 or rib projecting from its outer surface, approximately halfway up.
- the body 302 is split into two chambers by a flexible membrane 330, transverse to the axis 304.
- the outer periphery of the membrane 330 is fixed so waterproof on the internal surface of the body 302.
- the outer periphery of the membrane 330 is pinched by the body 302 at flange level 310.
- the upper chamber 332 delimited in the body 302 by the membrane 330 receives a calibration spring 340.
- the lower chamber 334 located on the other side of the membrane 330 receives a projecting tube 324, centered on the axis 304.
- This tube 324 extends on the outside of the body 302, towards the bowl 240 in the form of the aforementioned tip 320.
- the tube 324 is tightly connected to the body 302.
- the top 325 of the inner tube 324 is located near the membrane 330, plus precisely opposite a shutter 331 supported by the latter.
- the spring 340 pushes the shutter 331 against the top of the tube 320, to close the latter.
- the lower chamber 334 is connected to the outside, i.e. with the filter outlet chamber 257, through through passages 335 formed in the body 302 at the base thereof, around the end piece 320. From preferably, several passages are thus provided crossing 335 equi-distributed around axis 304.
- the diaphragm 330 and the shutter 331 are spaced from the top of the tube 325. The fuel can then flow from the lower chamber 334 to the nozzle 320 through the tube 324, and from there join the bowl 240.
- the body 302 is provided under the flange 310 and above the passages 335, of an annular groove 306, designed to receive a seal annular 308 ensuring sealing between the body 302 and the surface internal of the sleeve 264 linked to the lower wall 251 of the housing 252 of the filtered.
- a second annular seal 321 provides sealing between the outer surface of the end piece 320 and the sheath 262 in which is engaged this tip 320.
- the regulator 300 can be fixed on the linked sleeves 262, 264 to the housing 252 by any suitable means, for example by a ring 309 in taken with the external surface of the body 302 and with the internal surface of a third sleeve 267 linked to the second sleeve 266 via a dropout 268.
- the base 210 is placed opposite a access and inspection hatch provided on the vehicle chassis. Therefore, the filter 250 is easy to access since it suffices to disassemble the base 210 to access this filter.
- the filter 250 can be replaced without difficulty at any service station when the vehicle mileage reaches a required threshold defined by the manufacturer.
- the pump bodies 220 are immobilized in mounts, using planned shock absorbers generally respectively at the bottom and at the top of the pump.
- the damper generally provided in part upper part of the pump is replaced by flexible connecting means.
- the regulator 300 works with an absolute reference pressure corresponding to the pressure which reigns at rest in this chamber 332.
- FIG. 5 shows a variant of realization that, as schematically also on the FIG. 6, this upper chamber 332 of the regulator 300 has at least a through passage 303 through which the chamber 302 communicates with an auxiliary pressure reference.
- the upper chamber 332 of the body 302 is placed in a clearance 280 formed in the upper wall 258 of the housing 252.
- the seal between the external surface of the body 302 of the regulator 300 and a sheath 281 linked at clearance 280 is ensured by seal 308.
- Regulator 300 is fixed in the clearance 280 by the ring 309.
- the passage 303 communicates thus with the upper part of the reservoir R.
- the regulator 300 rests by its flange 310 on a recess 282 connecting the sheath 281 and the clearance 280.
- the end piece 320 is engaged in a sleeve 262 linked to the lower wall 251 of the filter and a seal 321 seals between this end piece 320 and this sleeve 262.
- This passage 303 formed in the body 302 of the regulator 300 can in other ways be connected, via conduit suitable, outside the tank R, to be placed under pressure atmospheric, or at the pressure of the intake manifold engine.
- Upstream filters 108 or primary filters have generally, according to conventional installations, a filtering power of particles larger than 70 ⁇ m.
- the downstream filter 13 on the other hand has generally a filtering power in the 3-10 ⁇ m range.
- a filter 222 with a filtering power capable of retaining particles of around 20 to 30 ⁇ m.
- This arrangement allows the use of a downstream filter 250 with the same filtering powers from 3 to 10 ⁇ m as the installations conventional, but with a lower filtering surface, and therefore reduce the size of this downstream filter 250 to allow its integration on the base 210, in the tank.
- the drawing assembly 200 can be equipped, as mentioned above, a level gauging system and / or fuel volume in tank R.
- Such a gauge equipping the pumping assembly can be in accordance with the provisions known and marketed today and essentially comprising a housing 402 fixed on the frame 216 or on the bowl 240, a resistive track placed in the housing, a float 404 capable of follow the fuel level developments and a directly linked cursor to the float or linked to it by means of a pivoting lever, which cursor moves on the resistive track according to the evolutions of the float.
- the gauge can also be formed from any other known structure, for example a capacitive gauge.
- the bowl 240 is mounted to slide vertically, on the base of the frame 216. If necessary, the bowl 240 can be stressed against the lower wall R2 of the tank R by simple gravity. However, preferably, at least one spring is interposed between the mount 216 and the bowl 240. Thanks to this indexing on the bottom, in a known manner, the bowl 240, and consequently the pump 220 as well as the gauging device associated 400, follow the bottom of the tank R2 whatever the deformations thereof, for example under the effect of the weight of the fuel, manufacturing dispersions or depending on the temperature or due to aging of the tank.
- the base 210 horizontal is fixed to the upper wall R1 of the tank.
- the base 210 can be tilted horizontally, see attached to a side wall of the tank R.
- the indexing on the bottom R2 of the tank can be obtained not by mounting telescopic in a vertical direction, but by pivoting mounting around a horizontal axis of the drawing / gauging assembly.
- the upper part of the filter housing 252 250 can be arranged directly in the form of a base provided with the outlet pipe 212.
- the tips 270 and 212 are then combined. This arrangement allows reduce the number of hydraulic connections required and decrease also the height of the system.
- the present invention offers many advantages.
- the outer casing 290 of the filter 250 may be in the form of a cylinder of revolution locally comprising a protuberance 292 at the level of which are located the connection and sealing means with the outlet 224 pump 220.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
- une embase supérieure 100 conçue pour être fixée sur une paroi de réservoir,
- des conduits 102, 103 fixés sur l'embase 100,
- un régulateur de pression 104,
- une pompe 106 équipée d'un filtre 108 à son entrée et
- une jauge de niveau 110 comprenant essentiellement un flotteur 112 fixé sur un bras pivotant 114 et conçue pour contrôler, par l'intermédiaire d'un curseur, un transducteur résistif 116.
- les figures 1 à 3 précédemment décrites illustrent schématiquement des dispositions conformes à l'état de la technique,
- la figure 4 représente une vue schématique en coupe d'un premier exemple de réalisation conforme à la présente invention,
- la figure 5 représente une vue schématique en coupe d'un second mode de réalisation de la présente invention,
- la figure 6 représente une vue schématique en coupe axiale d'un régulateur conforme à l'invention, et
- la figure 7 représente une vue schématique partielle en coupe, selon un plan de coupe transversal référencé VII-VII sur la figure 4, d'un dispositif conforme à la présente invention.
- elle rend inutile la protection anti-feu et anti-gravillonnage classique du filtre,
- elle simplifie la géométrie du réservoir puisqu'elle évite la réalisation d'une telle infractuosité destinée à loger le filtre,
- elle supprime la perte de volume liée à cette infractuosité (il faut noter que le volume de cette infractuosité correspondant à une perte de contenance est très souvent bien supérieure au volume du filtre),
- elle évite tout risque lié à une fuite au niveau de la liaison entre la pompe et le filtre, ou le filtre et l'embase, puisque toute fuite à ce niveau, selon l'invention, est automatiquement récupérée dans le bol 240.
Claims (17)
- Dispositif d'alimentation en carburant de moteur à combustion interne comportant un ensemble de puisage (200) comprenant une embase de fixation (210) conçue pour être fixée sur une paroi d'un réservoir de carburant (R), une pompe (220), au moins un conduit d'alimentation (212) relié à la sortie de la pompe (220), un filtre (250) placé sur ce conduit d'alimentation et un régulateur de pression (300) associé à la pompe, le régulateur de pression (300) et le filtre (250) étant fixés sur l'embase de l'ensemble de puisage (200) et le régulateur de pression (300) étant supporté par le boítier (252) du filtre (250), caractérisé par le fait que le régulateur (300) est placé en aval du filtre (250), et le filtre (250) comprend une structure filtrante (254) en forme de couronne, alimenté, par l'extérieur, par la sortie de pompe (220), tandis que le régulateur (300) est placé à l'intérieur de la partie centrale (257) de la structure filtrante (254).
- Dispositif selon la revendication 1, caractérisé par le fait que le régulateur (300) est supporté par une structure étagée (260) venue du boítier (252) de filtre (250).
- Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait qu'il est prévu une liaison étanche entre la sortie de la pompe (220) et l'entrée du filtre (250).
- Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait qu'il est prévu une liaison étanche (272) entre la sortie du filtre (250) et un embout de sortie (212) porté par l'embase (210).
- Dispositif selon l'une des revendications 3 ou 4, caractérisé par le fait que la liaison étanche comprend un tube souple (272).
- Dispositif selon l'une des revendications 3 ou 4, caractérisé par le fait que la liaison étanche comprend un montage télescopique avec moyens d'étanchéité interposés.
- Dispositif selon la revendication 6, caractérisé par le fait que les moyens d'étanchéité comprennent au moins un joint annulaire (226) à deux lèvres présentant une section droite en V à concavité axiale.
- Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que le régulateur (300) comprend un corps (302) pourvu d'une membrane étanche (330) délimitant deux chambres, l'une (332) pourvue d'un ressort de tarage (340) qui sollicite la membrane, l'autre possédant au moins un passage traversant d'entrée (335) et un passage de sortie (320) qui communique avec un conduit (324) coopérant avec un obturateur (331) lié à la membrane.
- Dispositif selon la revendication 8, caractérisé par le fait que la chambre (332) logeant le ressort de tarage est une chambre fermée étanche.
- Dispositif selon la revendication 8, caractérisé par le fait que la chambre (332) qui loge le ressort de tarage (340) possède au moins un passage traversant (303) par l'intermédiaire duquel cette chambre est reliée à une référence de pression auxiliaire.
- Dispositif selon la revendication 10, caractérisé par le fait que la référence de pression auxiliaire est formée par la paroi supérieure du réservoir, la pression atmosphérique, ou la pression du collecteur d'admission du moteur.
- Dispositif selon l'une des revendications 1 à 11, caractérisé par le fait que la pompe (220) comprend un filtre amont (222) adapté pour retenir des particules de l'ordre de 20 à 30µm et que le filtre (250) situé en aval du régulateur (300) est adapté pour retenir les particules de l'ordre de 3 à 10µm.
- Dispositif selon l'une des revendications 1 à 12, caractérisé par le fait qu'il comprend en outre un ensemble de jaugeage (400).
- Dispositif selon l'une des revendications 1 à 13, caractérisé par le fait que la pompe (220) et/ou le dispositif de jaugeage (400) sont indexés sur le fond.
- Dispositif selon l'une des revendications 1 à 14, caractérisé par le fait que la partie supérieure du filtre aval (250) est conformée en embase de fixation sur la paroi du réservoir.
- Dispositif selon l'une des revendications 1 à 15, caractérisé par le fait que le carter extérieur (290) du filtre (250) est en forme d'un cylindre de révolution comportant localement une excroissance (292) au niveau de laquelle sont situés les moyens de liaison et d'étanchéité avec la sortie (224) de la pompe (220).
- Réservoir équipé d'un dispositif d'alimentation conforme à l'une des revendications 1 à 16.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9411022 | 1994-09-15 | ||
FR9411022A FR2724692B1 (fr) | 1994-09-15 | 1994-09-15 | Ensemble de pompage incorporant un regulateur de pression, pour reservoir de carburant de vehicule automobile et reservoir ainsi equipe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0702142A1 EP0702142A1 (fr) | 1996-03-20 |
EP0702142B1 true EP0702142B1 (fr) | 1998-08-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95402079A Expired - Lifetime EP0702142B1 (fr) | 1994-09-15 | 1995-09-14 | Ensemble de pompage incorporant un régulateur de pression, pour réservoir de carburant de véhicule automobile et réservoir ainsi équipé |
Country Status (4)
Country | Link |
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EP (1) | EP0702142B1 (fr) |
DE (1) | DE69503854T2 (fr) |
ES (1) | ES2120697T3 (fr) |
FR (1) | FR2724692B1 (fr) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19523626A1 (de) * | 1995-06-29 | 1997-01-02 | Daimler Benz Ag | Druckregelventil für in Verbrennungsmotoren einzuspritzenden Kraftstoff und Integration dieses Druckregelventils in ein Kraftstoffilter |
DE19536084A1 (de) | 1995-09-28 | 1997-04-03 | Bosch Gmbh Robert | Flüssigkeitsfilter mit eingebautem Druckregler |
FR2746784B1 (fr) * | 1996-03-27 | 1998-05-22 | Bitron France | Dispositif de pompage immerge dans un reservoir pour vehicule automobile |
JPH1089188A (ja) * | 1996-07-23 | 1998-04-07 | Aisan Ind Co Ltd | 燃料フィルタ |
IT1290008B1 (it) * | 1997-03-03 | 1998-10-19 | Bitron Spa | Sistema per l'alimentazione di carburante ad un motore, in particolare per autoveicoli |
IT1290007B1 (it) * | 1997-03-03 | 1998-10-19 | Bitron Spa | Gruppo di aspirazione e mandata del carburante ad un motore, in particolare per autoveicoli |
DE19709780A1 (de) * | 1997-03-10 | 1998-09-17 | Bosch Gmbh Robert | Vorrichtung zum Fördern von Kraftstoff aus einem Kraftstofftank |
US6382190B1 (en) | 1997-03-11 | 2002-05-07 | Aisan Kogyo Kabushiki Kaisha | In-tank fuel filter improved to resist electrification |
FR2779772B1 (fr) * | 1998-06-16 | 2000-09-01 | Marwal Systems | Ensemble de puisage de liquide, notamment pour additif de carburant |
DE19902072C1 (de) * | 1999-01-20 | 2000-07-20 | Bosch Gmbh Robert | Fördereinrichtung für Kraftstoff |
DE10025484A1 (de) | 2000-05-23 | 2001-11-29 | Mahle Filtersysteme Gmbh | Kraftstofffilter für einen Verbrennungsmotor |
CN114718784B (zh) * | 2022-03-28 | 2023-09-01 | 安徽理工大学 | 一种汽车燃油泵 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3695438A (en) * | 1969-07-19 | 1972-10-03 | Alberto Malpassi | Gasoline pressure regulator device |
US5078167A (en) * | 1990-12-18 | 1992-01-07 | Parr Manufacturing, Inc. | Fuel filter and pressure regulator system apparatus |
US5195494A (en) * | 1992-02-27 | 1993-03-23 | Walbro Corporation | Fuel delivery system with outlet pressure regulation |
-
1994
- 1994-09-15 FR FR9411022A patent/FR2724692B1/fr not_active Expired - Fee Related
-
1995
- 1995-09-14 EP EP95402079A patent/EP0702142B1/fr not_active Expired - Lifetime
- 1995-09-14 DE DE69503854T patent/DE69503854T2/de not_active Expired - Fee Related
- 1995-09-14 ES ES95402079T patent/ES2120697T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2120697T3 (es) | 1998-11-01 |
EP0702142A1 (fr) | 1996-03-20 |
DE69503854D1 (de) | 1998-09-10 |
FR2724692B1 (fr) | 1997-01-24 |
FR2724692A1 (fr) | 1996-03-22 |
DE69503854T2 (de) | 1999-02-18 |
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