EP0817911B1 - Filtre d'adsorption pour systeme de retention de vapeurs de carburant pour le reservoir de carburant d'un moteur a combustion interne - Google Patents

Filtre d'adsorption pour systeme de retention de vapeurs de carburant pour le reservoir de carburant d'un moteur a combustion interne Download PDF

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Publication number
EP0817911B1
EP0817911B1 EP96915977A EP96915977A EP0817911B1 EP 0817911 B1 EP0817911 B1 EP 0817911B1 EP 96915977 A EP96915977 A EP 96915977A EP 96915977 A EP96915977 A EP 96915977A EP 0817911 B1 EP0817911 B1 EP 0817911B1
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EP
European Patent Office
Prior art keywords
valve
adsorption filter
housing
filter according
orifice
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
Application number
EP96915977A
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German (de)
English (en)
Other versions
EP0817911A1 (fr
Inventor
Erwin Krimmer
Wolfgang Schulz
Tilman Miehle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP0817911A1 publication Critical patent/EP0817911A1/fr
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Classifications

    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0854—Details of the absorption canister
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M2025/0845—Electromagnetic valves
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means

Definitions

  • the invention is based on an adsorption filter for Evaporation retention system of a fuel tank 2.
  • An internal combustion engine according to the preamble of claim 1 or 2.
  • Such an adsorption filter is already known (DE-PS 44 08 429), which has a bulge to in the Arching a valve by means of a fastener attach that to initiate the in the adsorption filter cached fuel vapors in an intake pipe of the Internal combustion engine is used.
  • the fastener is in Formed a retaining clip, which is inside the in curvature corresponding essentially to the size of the valve is integrally formed on a wall of the arch.
  • the retaining clip grips the valve under elastic Prestress on its outer surface. For noise reasons to cover the arching with the valve Cap provided.
  • That in the arch housed valve has an outflow nozzle to the Valve via a connecting line to the intake pipe of the Connect internal combustion engine.
  • the discharge nozzle protrudes to the side of the valve from the bulge of the Adsorption filter or the cap out.
  • the connection position of the connecting line or the outlet connection on the valve is therefore fixed and cannot be changed. For electrical It is necessary to contact the valve electrical connector for the valve through the Insert the sealing cap into the arch.
  • a connecting flange in the arch provided to seal the valve to one in the Connect the adsorption medium into the line.
  • the line is housed a small volume filter that for cleaning the adsorption medium via the line in the valve serves fuel vapors.
  • Such a small volume filter has the disadvantage, however, relatively quickly of contaminants, especially of Carbon particles of the adsorption filter to be added whereby an increased flow resistance at Dirt filter results in a pressure loss and thus one Reduction of the flow rate of the valve results.
  • valve in the arch and the valve is attached by means of a retaining clip complex to accomplish, especially during assembly in mass production, so that high manufacturing costs surrender.
  • access is limited possible from the outside to the valve, for example to To replace repair purposes, because only this The cap is removed and the valve is released from the retaining clip must become.
  • a pressure-dependent is also known from US-A-5 337 721 opening closing valve, which is fixed with a first Adsorption filter part is connected and its one Connector leads to the atmosphere while another Connection piece loose in an opening of a second Adsorption filter part is inserted.
  • the adsorption filter according to the invention with the characteristic features of claim 1 or 2 has in contrast the advantage that in a particularly simple manner
  • the valve is attached to the adsorption filter so that quick and safe assembly and disassembly of the valve on the adsorption filter is possible, which is an inexpensive Allows mass production.
  • this can be done without major constructive Having to make changes to existing valves used or modified in a simple manner become.
  • Another advantage is that different Connection positions of an outlet connection of the valve itself can be adjusted by turning the valve so that a Housing the adsorption filter with the valve in otherwise difficult to access installation locations is possible.
  • the preferably made of elastic plastic Sealing plug for fastening the valve on Adsorption filter enables a special vibration-damped and therefore low-noise attachment of the Valve.
  • Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
  • 1 shows a Adsorption filter according to the invention with attached valve according to a first exemplary embodiment according to the invention
  • Figure 2 shows a section of the adsorption filter attached valve according to a second invention Embodiment
  • Figure 3 is an interior view of the Adsorption filter with a view of the am Adsorption filter attached valve according to Figure 2.
  • FIG. 1 shows one marked with 1 Evaporative fuel retention system for one Fuel tank 4 of a not shown, especially mixture-compressing, spark-ignited Internal combustion engine used to supply the Internal combustion engine with fuel is used.
  • the Fuel evaporation retention system 1 has one over a Tank line 5 connected to the fuel tank 4 Adsorption filter 6, which with an adsorption medium 10, especially filled with activated carbon.
  • the Adsorption filter 6 has a cylindrical, for example trained basic housing 7, the one in the Base housing 7 insertable upper housing part 8 and a lower housing part which can be inserted into the basic housing 7 9 is closable.
  • the basic housing 7, the upper one Housing part 8 and the lower housing part 9 exist preferably made of plastic.
  • Connection piece 11 Over one at the top Housing part 8 integrally molded, for example Connection piece 11 is the adsorption filter 6 via the Tank line 5 connected to the fuel tank 4.
  • the Connection piece 11 projects with its connecting part 12 an upper end face 14 of the upper housing part 8 out and extends from the upper end face 14 approximately to to the center of the basic housing 7 in the interior of the Adsorption filter 6.
  • end portion 15 is a filter 17th attached to the connector 11, for cleaning from the fuel tank 4 via the tank line 5 into the Adsorption medium 10 serves fuel vapors.
  • the fuel evaporation retention system 1 has continue via a valve 20, which is also used as a regeneration valve or tank vent valve is called and its structure known to the person skilled in the art, for example, from DE-OS 40 23 044 is.
  • the valve 20 is connected via a connecting line 21 an intake pipe 22 of the internal combustion engine connected to the for example downstream one rotatable in the intake pipe 22 of the internal combustion engine introduced throttle valve 23 in the intake pipe 22 opens.
  • an intake pipe 22 of the internal combustion engine connected to the for example downstream one rotatable in the intake pipe 22 of the internal combustion engine introduced throttle valve 23 in the intake pipe 22 opens.
  • the fuel vapors come from the fuel tank 4 via the tank line 5 into the adsorption filter 6 and from this via the valve 20 into the connecting line 21, ambient air due to the negative pressure in the intake pipe 22 via a provided on the adsorption filter 6 Ventilation connection 25 is sucked in, so that the Adsorption filter 6 cached fuel vapor gets carried away.
  • the in the adsorption filter 6 temporarily stored fuel vapors mix with each other the inflowing via the ventilation connection 25 Ambient air.
  • electromagnetic actuated trained and by an electronic Control unit 30 controlled valve 20 arrive Fuel vapors from valve 20 via the connecting line 21 in the intake pipe 22, to then in at least one Burn the combustion chamber of the internal combustion engine.
  • shut-off valve 31 For the leak test of the fuel evaporation retention system 1 is at the ventilation port 25 further valve, hereinafter referred to as the shut-off valve 31 provided that the ventilation port 25 to the atmosphere can open or close.
  • the shut-off valve 31 is can also be actuated electromagnetically, for example trained and by the electronic control unit 30th controllable.
  • Shut-off valve 31 closed and valve 20 opened see above that during operation of the internal combustion engine in Intake pipe 22 prevailing vacuum also in the fuel tank 4, in the adsorption filter 6 and in the tank line 5 and in the connecting line 21 can adjust. After that it will Valve 20 closed. Are the fuel tank 4, the Adsorption filter 6, the tank line 5 and the Connection line 21 without leak, so the negative pressure remains receive.
  • a pressure sensor 33 detects this and transmits corresponding electrical signals to the electronic control unit 30.
  • the pressure sensor 33 is for Example in a lateral curvature 35 of the basic housing 7 housed in the adsorption filter 6 and measures, protected from a filter 18, the pressure in the interior of the Adsorption filter 6.
  • the pressure sensor 33 is, like that Valve 20 and the shut-off valve 31, with the electronic Control unit 30 connected via electrical lines.
  • valve 20 is pluggable on Adsorption filter 6 attached, for what in the upper housing part 8 an opening 37 is provided.
  • the inner wall 61 of the Opening 37 is in the upper housing part 8 of a Inverted 38 formed, for example, in one piece the upper housing part 8 is formed so that a sleeve-shaped part 36 results from one of the upper Face 14 facing away from the inner surface 39 of the upper Housing part 8 protrudes and partially in the interior of the Basic housing 7 or the adsorption filter 6 extends.
  • the tube-like, for example cylindrical Indentation 38 is used to hold a hollow Sealing plug 40, the elastic deformation of its Exterior at least partially inserted into the indentation 38 becomes. When used, it protrudes, for example its lying inside the adsorption filter 6 Annular surface 41 slightly above that inside the Adsorption filter 6 lying ring surface 42 of the indentation 38 out.
  • the sealing plug 40 has one as a stop serving collar 45, which in the inserted state of Sealing plug 40 in the indentation 38 on the upper one Face 14 of the upper housing part 8 abuts.
  • the hollow sealing plug 40 has, for example circular inner opening 47 to in the inner opening 47 Valve 20 with a cylindrical inflow neck 50 pluggable.
  • the Inner opening 47 of the sealing plug 40 at least one circumferential groove 49 except one to a longitudinal axis 67 of the indentation 38 has an inclined surface 54, which in axial direction to the lower housing part 9 towards the conical Cross-section decreases and on a rotating one Web 46 ends in the inner opening 47.
  • the the Web 46 reducing the opening cross section of the inner opening 47 forms an inner stop 53 for the inlet connection 50 of the Valve 20 in the inner opening 47 of the sealing plug 40.
  • the inflow nozzle 50 For inserting the valve 20 in the groove 49 points the inflow nozzle 50 has an edge bead 52, which by a Outer surface 51 of the inflow nozzle 50 of the valve 20 protrudes revolving and in the axial direction towards the web 46 tapers conically, so that the bead 52 has a frusto-conical shape to when inserting the Inflow nozzle 50 in the example already in the Indentation 38 inserted sealing plug 40 the Widen the inner opening 47 slightly until the inner stop 53 is reached in the sealing plug 40.
  • the plug 40 can first seal the plug 40 over the Inlet nozzle 50 of the valve 20 to put to this together with the valve 20 in the indentation 38 introduce.
  • the preferably made of elastic plastic existing sealing plug 40 enables a particularly vibration-damped fastening of the valve 20 in the Invert 38 so that noise emissions from the valve 20th be reduced.
  • the sealing plug 40 quick and safe assembly and disassembly of the valve 20 possible on the adsorption filter 6.
  • the inflow nozzle 50 of the Valve 20 even without the interposition of sealing plug 40 in the opening 37 of the indentation made of plastic 38 inserted tightly and held in it.
  • the sleeve-shaped Indentation 38 for example, from one larger cross-sections, for example on the inner wall 39 of the upper housing part 8 attached or in one piece surrounded this molded filter sleeve 27.
  • the filter sleeve 27 is for holding a large-area filter 19 provided for cleaning the in the adsorbent 10th serves temporarily stored fuel vapors and this has a mesh size of a few micrometers.
  • the Filter 19 can on a parallel to the annular surface 41 End face of the filter sleeve 27 can be stretched, he can however, the basket-shaped in a manner not shown Surround inversion 38.
  • the filter 19 for example in a between the web 46 and the annular surface 41 provided filter groove 56 and in this on the sealing plug 40, for example by means of Welding to be attached. It is also possible that Filter 19 on the indentation 38, for example on the To attach ring surface 42.
  • a Outer surface 44 of the sealing plug 40 is a circumferential one Have groove 43 or more circumferential grooves 43.
  • FIG. 2 is a second invention Embodiment of the fuel evaporation retention system 1 in which all are the same or equivalent parts with the same reference numerals as in first embodiment of Figure 1 are marked.
  • the valve 20 shown in section in FIG. 2 has a two-part valve housing 70 with a cap-shaped upper valve housing part 71 and a sleeve-shaped lower Valve housing part 72, the inflow nozzle 50 of the valve 20 essentially forms.
  • the cap-shaped Valve housing part 71 is in the sleeve-shaped Valve housing part 72 can be used.
  • Both valve housing parts 71, 72 are preferably made of plastic and are welded together, for example.
  • FIG Holding the valve 20 in the indentation 38 one in figure 2 and 3 provided locking connection on the valve 20, for which an end region 73 of the sleeve-shaped Valve housing part 72, for example, four latching sections 74 having.
  • an interior view of the Adsorption filter 6 with a view of that in the Indentation 38 latched valve 20 is shown extend the latching sections 74 with a short radial Extension and short extension in the circumferential direction bead-shaped on the circumference of the outer surface 51 of the sleeve-shaped Valve housing part 72 with an angular distance of approximately 90 degrees from each other.
  • the locking portions 74 also only a relatively short extension in the axial direction, around the outer surface 51 of the sleeve-shaped valve housing part 72 only thicken a little so that easy insertion of the Valve housing part 72 in the indentation 38 is possible.
  • the a barbed cross section Locking sections 74 have protruding locking surfaces 63 which are used for Longitudinal axis 67 are inclined and in the axial direction taper.
  • the indentation 38 slides with the latching sections 74 provided end portion 73 of the valve housing part 72 below radial prestress in the inner wall 61 of the indentation 38 until a cross-section of the opening 37 is reduced Inner bead 69 in the inner wall 61 of the indentation 38 is achieved to continue beyond this with the Locking sections 74 in a circumferential in the inner wall 61 recessed notch 60.
  • the locking groove 60 has for this purpose, one designed according to the latching surface 63 Cross-section.
  • the valve 20 is in the indentation 38 rotatable to by turning the in the recess 38 latched valve 20 different connection positions of the To allow outlet connector 55 on the valve 20.
  • the inner wall 61 of the indentation shown in Figure 2 38 is stepped to the upper end face 14, respectively has a rapidly increasing opening cross-section, to between a step 62 in the inner wall 61 and a the cross section of the inflow nozzle 50 increasing paragraph 75 on the outer surface 51 of the inflow nozzle 50 on the one hand to form a stop for the valve 20 and around on the other hand, between the outer surface 51 of the sleeve-shaped Valve housing 72 or paragraph 75 and the Level 62 to accommodate a sealing ring 65.
  • the sealing ring 65 becomes when inserting the valve 20 into the indentation 38 somewhat deformed and remains even after the complete Insert the valve 20 into the indentation 38 in light squeezed condition, causing an axial preload of the latched sections 74 in the latching groove 60 on the Inner bead 69 results in the valve 20 becoming detached prevented and thus a secure mounting of the valve 20 in the indentation 38 enables.
  • the valve 20 shown in section in Figure 2 has a Structure essentially that of DE-OS 40 23 044 valve shown corresponds and their disclosure To be part of the present patent application. The following is therefore only briefly on the structure of the valve 20 received.
  • the cap-shaped valve housing part 71 has an outflow connection 55, for example in one piece is integrally formed on the valve housing part 71 and for pluggable Receiving the connecting line 21 is used. Not closer
  • the outlet connection 55 shown is cylindrical and is angled laterally from the cap-shaped Valve housing part 71 from. Inside the sleeve-shaped An electromagnet 77 is arranged in the valve housing part 72.
  • It has a pot-shaped magnet housing 78 with one Bottom 79 of the magnet housing 78 penetrating, coaxial, hollow cylindrical magnetic core 80 and a cylindrical Excitation coil 81 on, for example, on one Plastic existing coil carrier 82 sits and in Magnet housing 78 surrounds the magnetic core 80.
  • On the bottom 79 of the magnet housing 78 is an outward projecting threaded connector 89 with an internal thread 83 formed in which an external thread portion 84 on the hollow cylindrical magnetic core 80 is screwed.
  • the magnetic core 80 By rotating the magnetic core 80, this can be in the magnet housing 78 are axially displaced.
  • the magnetic core 80 has one of the hollow magnetic core 80 limited axial through opening 85, so that fuel vapor in the through opening 85 from Inflow nozzle 50 can flow to the outlet nozzle 55.
  • the Magnet housing 78 with magnetic core 80 is so in the sleeve-shaped valve housing part 72 used that between an outer jacket 86 of the magnet housing 78 and one Inner wall 87 of the sleeve-shaped valve housing part 72 Axial channels 88 remain, for example in Circumferential direction offset by the same angle are, so that in the sectional view of Figure 2 only two to see diametrically opposite axial channels 88 are.
  • the axial channels 88 are on the one hand over one of the annular surface 42 of the indentation 38 and the bottom 79 of the Magnet housing 78 limited annulus 90 with the Outflow connection 55 in connection. On the other hand, they are Axial channels 88 through bores 91 that are near the open end of the magnet housing 78 is introduced into the magnet housing 78 are connected to the inside of the magnet housing 78. Through these axial channels 88, the inflow nozzle 50 can be fuel vapor entering also around the magnet housing 78 flow around and dissipate the heat generated here.
  • the free edge of the magnet housing 78 is one to the outside angled support flange 92, the end in an axially projecting annular web 94 is bent.
  • the Support flange 92 serves to receive a yoke 93, which at least partially covers the magnet housing 78 and rests against the ring web 94 at the edge. Between the Support flange 92 and the yoke 93 becomes another Leaf spring 95 clamped from non-magnetic material, which carries the armature of the electromagnet 77.
  • the Electromagnet 77 is used for clocked switching Seat valve 97, for example a valve double seat 98 having.
  • a valve member acts with the valve double seat 98 in the form of an annular disk 99 made of magnetic material together, which is also the armature of the electromagnet 77 forms.
  • the annular disk 99 carries the valve double seat 98 on it facing side a sealing rubber 100 which in Closed state of the seat valve 97 by a Valve closing spring 101 on the valve double seat 98 is pushed open.
  • the free end face of the magnetic core 80 forms a stop 102 for the stroke movement of the Washer 99.
  • the valve closing spring 101 is small dimensioned because with a pressure drop between Outflow connection 55 and inflow connection 50 have a suction effect the washer 99 is exerted in the direction of valve closing and the closing action of the valve spring 101 is supported.
  • the electromagnet 77 When the electromagnet 77 is de-energized, the seat valve 97 is closed, since the washer 99 with its sealing rubber 100 from the valve closing spring 101 to the valve double seat 98 is pressed on.
  • the electromagnet 77 When operating the internal combustion engine the electromagnet 77 from the control electronics of the Electronic control unit 30 controlled clocked, for what for electrical contacting of the valve 20 on sleeve-shaped valve housing part 72 in one piece molded electrical connector 103 provided is.
  • the cycle rate is determined by the operating status the internal combustion engine specified so that the Seat valve 97 from the inlet connection 50 into the outlet connection 55 exceeding flow rate of volatilized Fuel vapor can be dosed accordingly.
  • the inner wall 87 of the sleeve-shaped valve housing part 72 are on the inner wall 87 of the sleeve-shaped valve housing part 72, for example four webs 57 formed radially from the inner wall 87 protrude and for example a radial extension of about a quarter of an inside diameter of the have sleeve-shaped valve housing part 72.
  • the webs 57 extend from the bottom 79 of the Magnet housing 78 to an end annular surface 66 of the sleeve-shaped valve housing part 72.
  • the webs 57 serve to hold a large area shown in Figure 3 Filter 19, the sleeve-shaped valve housing part 72nd radially covered and a mesh size of for example less than 50 microns.
  • the attachment of the Filters 19 can be glued or welded for example on the annular surface 66 and / or on the webs 57 of the valve 20 done. But it is also possible to use one Filter 19 on the annular surface 42 of the indentation 38 for Example to be attached by gluing or welding. It it is also conceivable to have a sleeve on the indentation 38 attached, which is spanned by a filter fabric.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Separation Of Gases By Adsorption (AREA)

Claims (15)

  1. Filtre d'adsorption pour un système de retenue de vapeurs de carburant d'un réservoir de carburant d'un moteur à combustion interne, comportant une soupape reliée par une conduite de liaison prévue sur la soupape, à la tubulure d'aspiration du moteur à combustion interne, et par une conduite de réservoir prévue sur le boítier du filtre d'adsorption, au réservoir de carburant,
    caractérisé en ce que
    la soupape (20) est montée dans le boítier (8) du filtre d'adsorption (6), dans une ouverture (37) prévue dans le boítier (8), à l'aide d'un bouchon (40) qui se place dans l'ouverture (37) et vient par-dessus l'ajutage d'alimentation (50) de la soupape (20).
  2. Filtre d'adsorption pour un système de retenue de vapeurs de carburant d'un réservoir de carburant d'un moteur à combustion interne, comportant une soupape reliée par une conduite de liaison installée sur la soupape, à la tubulure d'aspiration du moteur à combustion interne, et par une conduite de réservoir prévue sur le boítier du filtre d'adsorption, au réservoir de carburant,
    caractérisé en ce que
    la soupape (20) est tenue engagée dans le boítier (8) du filtre d'adsorption (8), dans une ouverture (37) prévue dans le boítier (8), tandis que
    le boítier (8) du filtre d'adsorption (6) présente une partie rentrante (38) qui forme l'ouverture (37) du boítier (8) et s'étend en partie à l'intérieur du filtre d'adsorption (6) et possède une paroi intérieure (61) avec au moins une nervure d'encliquetage (60) dans laquelle pénètrent des segments d'encliquetage (74) prévus sur la zone d'extrémité (73) de la soupape (20) pour réaliser une liaison par encliquetage.
  3. Filtre d'adsorption selon la revendication 1,
    caractérisé en ce que
    le boítier (8) du filtre d'adsorption (6) comporte une partie rentrante (38) qui forme l'ouverture (37) du boítier (8) et qui s'étend en partie à l'intérieur du filtre d'adsorption (6).
  4. Filtre d'adsorption selon l'une quelconque des revendications 2 ou 3,
    caractérisé en ce que
    la partie rentrante (38) est réalisée d'une seule pièce avec le boítier (8) en matière plastique du filtre d'adsorption (6).
  5. Filtre d'adsorption selon l'une quelconque des revendications 2 ou 3,
    caractérisé en ce que
    la partie rentrante (38) est réalisée en forme de manchon prévu sur la surface intérieure (39) du boítier (8).
  6. Filtre d'adsorption selon la revendication 1,
    caractérisé en ce que
    le bouchon (40) est en matière élastique, notamment en matière plastique ou en caoutchouc.
  7. Filtre d'adsorption selon la revendication 6,
    caractérisé en ce que
    le bouchon (40) possède une ouverture intérieure (47) ayant au moins une rainure périphérique (49) dans laquelle pénètre une extrémité (52) en forme de bourrelet de la soupape (20), pour réaliser la liaison encliquetée.
  8. Filtre d'adsorption selon la revendication 2,
    caractérisé en ce que
    les segments d'encliquetage (74) font saillie en forme de bourrelets par rapport à la surface extérieure (51) de la soupape (20).
  9. Filtre d'adsorption selon l'une quelconque des revendications 1 ou 8,
    caractérisé en ce que
    les segments d'encliquetage (74) ont une section en forme de crochet.
  10. Filtre d'adsorption selon la revendication 2,
    caractérisé en ce que
    la paroi intérieure (61) de la partie pénétrante (38) présente un gradin (62) agrandissant la section d'ouverture (37).
  11. Filtre d'adsorption selon l'une quelconque des revendications 2 ou 3,
    caractérisé en ce que
    la partie pénétrante (38) est entourée par un manchon (27) de plus grande section, qui part d'une surface intérieure (39) du filtre d'adsorption (6) et qui recouvre avec un filtre (19) la partie rentrante (38).
  12. Filtre d'adsorption selon l'une quelconque des revendications 2 ou 3,
    caractérisé en ce que
    l'extrémité de la partie rentrante (38) située à l'intérieur du filtre d'adsorption (6), est recouverte par un filtre (19).
  13. Filtre d'adsorption selon l'une quelconque des revendications 1 ou 2,
    caractérisé par
    un filtre (19) prévu sur l'ajutage d'alimentation (50) de la soupape (20).
  14. Filtre d'adsorption selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que
    la soupape (20) est tenue libre en rotation dans l'ouverture (37) du filtre d'adsorption (6).
  15. Filtre d'adsorption selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que
    la soupape (20) est à commande électromagnétique.
EP96915977A 1995-09-12 1996-06-07 Filtre d'adsorption pour systeme de retention de vapeurs de carburant pour le reservoir de carburant d'un moteur a combustion interne Expired - Lifetime EP0817911B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19533742 1995-09-12
DE19533742A DE19533742A1 (de) 1995-09-12 1995-09-12 Adsorptionsfilter für ein Brennstoffverdunstungs-Rückhaltesystem eines Brennstofftanks einer Brennkraftmaschine
PCT/DE1996/000999 WO1997010427A1 (fr) 1995-09-12 1996-06-07 Filtre d'adsorption pour systeme de retention de vapeurs de carburant pour le reservoir de carburant d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP0817911A1 EP0817911A1 (fr) 1998-01-14
EP0817911B1 true EP0817911B1 (fr) 2001-09-26

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EP96915977A Expired - Lifetime EP0817911B1 (fr) 1995-09-12 1996-06-07 Filtre d'adsorption pour systeme de retention de vapeurs de carburant pour le reservoir de carburant d'un moteur a combustion interne

Country Status (6)

Country Link
US (1) US5809978A (fr)
EP (1) EP0817911B1 (fr)
JP (1) JPH10509228A (fr)
KR (1) KR970707377A (fr)
DE (2) DE19533742A1 (fr)
WO (1) WO1997010427A1 (fr)

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DE19839476A1 (de) * 1998-08-29 2000-03-02 Bosch Gmbh Robert Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff
FR2786533B1 (fr) * 1998-11-30 2001-01-05 Eaton Corp Piece de solidarisation entre une electrovanne et un filtre dans le circuit d'admission d'air d'un moteur a combustion
WO2000077427A2 (fr) * 1999-06-14 2000-12-21 Siemens Canada Limited Robinet de purge de carter pour flux d'air a forte regeneration
ES2167275B1 (es) * 2000-10-20 2003-10-16 Bitron Ind Espana Sa Electrovalvula reguladora de caudal de aire.
DE10203959A1 (de) * 2002-02-01 2003-08-14 Delphi Technologies Inc N D Ge Speichervorrichtung
DE10234609A1 (de) * 2002-07-30 2004-02-19 Robert Bosch Gmbh Ventil zur Regelung eines strömenden Mediums, insbesondere Wasserventil
FR3035167B1 (fr) * 2015-04-20 2018-05-25 Valeo Systemes De Controle Moteur Electrovanne de purge pour dispositif d'evacuation de vapeurs
FR3036456B1 (fr) * 2015-05-20 2017-12-22 Valeo Systemes De Controle Moteur Electrovanne de purge pour dispositif d'evacuation de vapeurs
FR3069811B1 (fr) * 2017-08-02 2019-08-02 Sogefi Filtration Dispositif de regulation de pression et son procede d'assemblage, pour un absorbeur de vapeurs de carburant
JP7148381B2 (ja) * 2018-12-10 2022-10-05 浜名湖電装株式会社 流量制御弁および蒸発燃料処理装置

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Also Published As

Publication number Publication date
KR970707377A (ko) 1997-12-01
JPH10509228A (ja) 1998-09-08
DE59607783D1 (de) 2001-10-31
EP0817911A1 (fr) 1998-01-14
DE19533742A1 (de) 1997-03-13
WO1997010427A1 (fr) 1997-03-20
US5809978A (en) 1998-09-22

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