EP0840846B1 - Unit with a snap-action fastening device - Google Patents

Unit with a snap-action fastening device Download PDF

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Publication number
EP0840846B1
EP0840846B1 EP96945738A EP96945738A EP0840846B1 EP 0840846 B1 EP0840846 B1 EP 0840846B1 EP 96945738 A EP96945738 A EP 96945738A EP 96945738 A EP96945738 A EP 96945738A EP 0840846 B1 EP0840846 B1 EP 0840846B1
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EP
European Patent Office
Prior art keywords
recess
valve
sealing ring
assembly
assembly according
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
EP96945738A
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German (de)
French (fr)
Other versions
EP0840846A1 (en
Inventor
Gerhard Pirch
Erwin Krimmer
Udo Hafner
Wolfgang Schulz
Claus Sax
Tilman Miehle
Rolf Bald
Manfred Zimmermann
Bernd Koch
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Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP0840846A1 publication Critical patent/EP0840846A1/en
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Publication of EP0840846B1 publication Critical patent/EP0840846B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F02M26/58—Constructional details of the actuator; Mounting thereof
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device

Definitions

  • the invention is based on an aggregate of the type of claim 1. It is nice such an assembly is known in the form of a valve (EP-OS 0 582 297), the fuel via a valve provided Inlet nozzle is fed to this afterwards in metered Way from an outflow nozzle into an intake duct To deliver the intake module.
  • the inlet connection of the valve is for example via a hose line to an absorption filter connected to the from a fuel tank Internal combustion engine evaporates evaporated fuel vapors and feeds the valve via the hose line.
  • the valve body is cylindrically stepped and consists of a larger cross-section Outer surface and a discharge nozzle outer surface with a smaller cross-section.
  • the valve will graded according to the outer surfaces of the valve trained recess, which consists of a cross-sectionally larger and a cross-sectionally smaller part composed. Between the larger section and the smaller section is formed a paragraph, the when inserting the valve into the recess as a stop serves.
  • the outer surface of the outflow nozzle In the recess of the intake module is on the outer surface of the outflow nozzle with a smaller cross section Sealing ring attached, which is only used to seal the Outflow nozzle is provided in the recess. in the installed state of the valve this is in the Recess on the shoulder with a valve ring surface. Also the The valve has a larger cross-sectional outer surface an inner surface of the larger cross section in the Recess. To attach the valve, the cross-sectional larger outer surface of the valve on the circumference circumferential ring bead protruding radially from the outer surface on.
  • valve Valve This also as a tank ventilation valve or regeneration valve Valve known to those skilled in the art can be actuated electromagnetically trained and has an electromagnet on a Anchor acts with a valve closing member to the over the Inflow nozzle into the fuel flowing into the valve clocked from the discharge nozzle into the intake duct of the intake module.
  • the clocked control mode the valve has the disadvantage that it is a relative loud noise results when operating the valve.
  • the housing of the valve in a recess of the intake module is the outer surface and the valve ring surface of the valve in contact with the inner surface or the paragraph of the recess, which is the Operating noise of the valve amplified.
  • assembly and disassembly the valve by means of a clamping ring is relatively expensive.
  • the unit according to the invention with the characteristic Features of claim 1 has the advantage that a silent arrangement in a simple way and attachment of the unit takes place, the unit only causes a quiet operating noise and without large Effort can be assembled and disassembled.
  • the unit is simpler and inexpensive to manufacture and especially on Intake module by means of the snap connection in a simple way and how to assemble and disassemble.
  • Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
  • 1 shows a partial sectional view of a side view of a Unit designed according to the invention after a first Embodiment according to the invention
  • Figure 2 a Top view of the unit according to Figure 1
  • Figure 3 a perspective view of the unit according to the invention with associated attachment after a second Embodiment according to the invention
  • the unit labeled 1 below is for one Internal combustion engine is provided and is for this purpose in a Installation wall 20 of a resource line 2 Internal combustion engine introduced.
  • a resource management 2 as shown in FIG. 1, for example act as an intake pipe of the internal combustion engine, through which through the engine air from the environment can suck in, for example, in the form a conventional injection valve trained unit 1 fuel for subsequent combustion in combustion chambers is added to the internal combustion engine.
  • Building a Injector is known to the person skilled in the art, for example, from the US PS 5,156,133 or from GB-PS 1 603 501 well known.
  • the unit 1 a directional control valve of a switching device that is used for Example is equipped with an actuator to move through Switch to be able to change the length of the intake pipe.
  • Such switching devices for with so-called Vibrating intake manifold supercharged internal combustion engines are the expert for example from DE-OS 41 05 938 well known.
  • the resource management can also be one Throttle valve body of the internal combustion engine act in which a throttle body for example in the form of a Throttle is rotatably housed with the Throttle body in the throttle body respectively the operating line 2 to control flowing air.
  • Such a structure is known to the person skilled in the art, for example well known from US Pat. No. 5,497,746.
  • the resource management can also be a Exhaust gas recirculation line act on the exhaust gas recirculation valve is attached to the exhaust gas flow accordingly Taxes.
  • the structure of such a valve is Sufficient expert for example from WO 95/27134 known.
  • the invention is also based on a Unit for a valve representing an internal combustion engine 1 demonstrated by way of example, for example for metering Introducing from a fuel tank of an internal combustion engine volatilized fuel into the equipment line 2 of the internal combustion engine is provided.
  • the Resource line 2 provides one, for example Intake duct 2 of an intake module 3 of the internal combustion engine
  • the valve 1 is in a recess 10 of the Installation wall 20 of the equipment line 2 or of the intake module 3 introduced.
  • valve 1 in part Sectional view schematically simplified in side view shown valve 1 can be actuated electromagnetically trained and for example part of a no closer shown fuel evaporation retention system Internal combustion engine, its structure and function, for example Bosch technical information, engine management Motronic, second edition, August 1993, pages 48 and 49 is removable.
  • the structure and mode of operation of a such, the expert also as a regeneration valve or Tank vent valve known valve 1 is from DE-OS 40 23 044 known, the disclosure of which is also part of the present patent application.
  • the valve 1 has a housing 4, which is preferably made of Plastic exists and for example in plastic injection molding technology is made.
  • the valve 1 is used to initiate that retained by the evaporative emission control system Fuel into the intake duct 2 of the intake module 3 the internal combustion engine.
  • the suction module 3 exists preferably like the housing 4 of the valve 1 from one Plastic that withstands the high strength and can withstand high temperatures of the internal combustion engine.
  • a suitable plastic is, for example Polyamide.
  • the housing 4 of the valve 1 is stepped cylindrically trained and consists of a first rotating, cross-sectionally smaller outer surface 7 of a first section 8 and a second circumferential, larger cross-section Outer surface 6 of a second section 9 together.
  • the Valve 1 is in the corresponding to the outer surfaces 6, 7 of the Valve 1 graduated recess 10 in Intake module 3 at least partially into recess 10 introduced, which along a longitudinal axis 5 from a cross-sectionally larger part 14 with a cross-sectionally larger Inner surface 11 and a part 15 with a smaller cross section an inner surface 12 of smaller cross-section. Between the two parts 14, 15, a paragraph 16 formed, which has an annular surface 17.
  • Both parts 14, 15 run centrally to the longitudinal axis 5 and have one cylindrical cross section, which is slightly larger than that in the parts 14, 15 received by the outer surfaces 6, 7 limited, respective cylindrical cross section of the sections 8 or 9 of the valve 1, so that in the built State of the valve 1 between the outer surfaces 6, 7 and Inner surfaces 11, 12 result in two radial gaps 48, 49.
  • the inner surface 12 with a smaller cross section goes into a channel 18 over, which opens into the intake duct 2, through the the internal combustion engine air from the environment subsequent suction mixture formation.
  • Fuel to the valve 1 takes place, for example via an additional line 13, for example in the form a hose line is formed and on one on one upper housing part 21 of the valve 1 provided inlet connection 22 is attached.
  • the fuel preferably downstream one in the intake duct 2 of the Intake module 3 rotatably accommodated throttle valve from the Channel 18 discharged into intake duct 2.
  • the valve 1 controls a passage cross section inside Example using a cooperating with a valve seat Closing body. In the passage cross-section flows as Medium for example vapor fuel and air over the additional line 13 in the valve 1 to this fuel-air mixture then, for example, in a clocked manner from the To discharge spigot 23 in the channel 18.
  • sealing rings 25, 26 are used in addition to the Sealing of the valve 1 in the recess 10 according to the invention also for storage and fastening of the valve 1 in the Recess 10. Both sealing rings 25, 26 consist of this an elastic material, preferably rubber.
  • the Sealing rings 25, 26 are, for example, in the form of so-called O-rings formed a circular cross section exhibit. As shown in Figure 1, the first is Sealing ring 25 in a recessed from the outer surface 7 first annular groove 30 of the first section 8 of the housing 4 brought in.
  • the second sealing ring 26 is in the same way into a second recessed from the second outer surface 6 Annular groove 31 of the second section 9 of the housing 4 brought in. Both sealing rings 25, 26 project radially beyond their respective outer surfaces 6, 7 and are at Inserting the valve 1 into the recess 10 elastically deformed, leading the valve 1 radially, however between the inner surfaces 11, 12 of the recess 10 and the Outer surfaces 6, 7 of valve 1 have radial gaps 48, 49 remain.
  • the larger cross-sectional inner surface 11 of the recess 10 is partially from an end face 35 of the Intake module 3 protruding, sleeve-shaped extension 36 educated.
  • FIG. 2 a top view of FIG. 1, is shown, the sleeve-shaped extension 36 exposes itself several ring snap elements 40 together.
  • the one Snap device for holding the valve 1 forming Ring snap elements 40 are circumferential in the direction recesses 41 running parallel to the longitudinal axis 5 separated from each other, so that for example twelve tongue-like ring snap elements 40 are present that are evenly distributed over the circumference of the extension 36.
  • the individual ring snap elements 40 are bendable for example made of plastic and can be inserted of valve 1 from housing 4 of valve 1 accordingly bend away.
  • the sleeve-shaped extension 36 with the ring snap elements 40 is, for example, like the intake module 3 made of plastic and is used in the manufacture of the intake module 3 for example injection molded in plastic injection molding technology.
  • the axial distances of the second sealing ring 26 or the second Annular groove 31 and the groove-shaped recess 45 in the Inner surface 31 of the ring surface 17 are selected in such a way that between the annular surface 17 and one between the cross-sectionally larger outer surface 6 and the cross-sectionally smaller Outer surface 7 remaining valve ring surface 19 there is an axial gap 47.
  • the axial gap 47 and the radial gaps 48, 49 close a contact of the Valve 1 on surfaces 11, 12 and 17 in the recess 10.
  • the first sealing ring 25 with a smaller cross section lies only radially sealing on the inner surface 12 in a smaller cross-section Part 15 of the recess 10 and is therefore in its axial displacement in the direction of the longitudinal axis 5 not hindered, so that there is almost a floating bearing for the Valve 1 is formed.
  • a U-shape can be used, for example, to dismantle the valve 1 wedge between the ring snap elements 40 and the outer surface 6 are inserted into the gap 48.
  • the Wedge bends the ring snap elements when inserted into the gap 48 40 something so that the snap connection between the second sealing ring 26 and the ring snap elements 40 is released and the valve 1 is removed from the recess 10 can be.
  • the Ring snap elements 40 in one piece on the intake module 3 on Paragraph 36 trained and in a simple manner at Manufacture of the intake module 3, for example, in plastic injection molding technology be injected.
  • FIG. 3 shows a second exemplary embodiment according to the invention, where all the same or equivalent parts identified by the same reference numerals in FIGS. 1 and 2 are.
  • the valve 1 is in perspective shown, for attachment or mounting into a separate component designed as a built-in pot 50 is introduced.
  • the mounting pot 50 has on its circumference the ring snap elements over part of its axial extent 40 and forms the recess 10 for the valve 1.
  • the built-in pot 50 which is preferably made of plastic has a circumferential ring edge 54 with the ring snap elements 40 and a pot bottom 55 and possibly one connecting piece 56 adjoining the pot bottom 55 and is for example for intake modules made of metal 3 for fastening the valve 1 to the intake module 3 intended.
  • the installation pot 50 is shown, for example, in one corresponding to the outer shape of the mounting pot 50 trained, indicated in dashed lines in Figure 3, cylindrical recess 52 in the metal intake module 3 introduced and in this for example by gluing attached. Thereafter, the valve 1 can be installed in the pot 50 introduced and by means of the ring snap elements 40 am Installation pot 50 are held. It goes without saying also possible, the built-in pot 50 in a cylindrical Recess of an intake module 3 made of plastic to use, so as to close valve 1 on intake module 3 Fasten.
  • the unit can also be a Act fuel injector of known design, as it Example from US-PS 5,156,133 or from GB-PS 1 603 501 is known.
  • the invention can also be based on so-called Exhaust gas recirculation valves easily transferred as they are known for example from WO 95/27134.
  • the invention is also suitable for other valves, for Example of valves for idle control of the internal combustion engine, as for example from US Pat. No. 5,497,746 are known.

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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)

Abstract

The invention concerns a simplified, economical and sound-absorbing method of securing a unit taking the form of a valve, for example. In order to secure the unit (1) it comprises a housing (4) with a first section (8) having a first peripheral outer surface (7) and at least one second section (9) with at least a second peripheral outer surface (6). A first sealing ring (25) can be placed on the first outer surface (7), and the first section (8) and first sealing ring (25) can be introduced into a recess (10) in an embedded wall (20). A second sealing ring (26) can be placed on the second outer surface (6) of the second section (9), and the second section (9) and second sealing ring (26) can likewise be introduced into the recess (10) such that the unit (1) is mounted in the recess (10) by means of the two sealing rings (25, 26), without the first and second outer surfaces (6, 7) of the unit (1) abutting inner surfaces (11, 12) of the recess (10). The embedded wall (20) comprises a sleeve-like attachment (36) into which the recess (10) extends and which is divided into a plurality of flexible annular snap-action elements (40) for holding the unit (1), into which elements the second sealing ring (26) can snap when the unit (1) is introduced into the recess (10). The unit according to the invention and the snap-action device therefor are intended in particular for valves for the metered introduction of volatilized fuel into an internal combustion engine intake duct.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Aggregat nach der Gattung des Anspruchs 1. Es ist schon ein derartiges Aggregat in Form eines Ventils bekannt (EP-OS 0 582 297), dem Brennstoff über einen am Ventil vorgesehenen Zuströmstutzen zugeführt wird, um diesen danach in dosierter Weise aus einem Abströmstutzen in einen Ansaugkanal eines Ansaugmoduls abzugeben. Der Zuströmstutzen des Ventils ist zum Beispiel über eine Schlauchleitung an einen Absorptionsfilter angeschlossen, der die aus einem Brennstofftank der Brennkraftmaschine verflüchtigten Brennstoffdämpfe zwischenspeichert und über die Schlauchleitung dem Ventil zuführt. Das Gehäuse des Ventils ist zylindrisch abgestuft ausgebildet und setzt sich aus einer querschnittsgrößeren Außenfläche und einer den Abströmstutzen bildenden, querschnittskleineren Außenfläche zusammen. Das Ventil wird in eine entsprechend der Außenflächen des Ventils abgestuft ausgebildete Ausnehmung eingeführt, die sich aus einem querschnittsgrößeren und einem querschnittskleineren Teil zusammensetzt. Zwischen dem querschnittsgrößeren Teil und dem querschnittskleineren Teil wird ein Absatz gebildet, der beim Einführen des Ventils in die Ausnehmung als Anschlag dient.The invention is based on an aggregate of the type of claim 1. It is nice such an assembly is known in the form of a valve (EP-OS 0 582 297), the fuel via a valve provided Inlet nozzle is fed to this afterwards in metered Way from an outflow nozzle into an intake duct To deliver the intake module. The inlet connection of the valve is for example via a hose line to an absorption filter connected to the from a fuel tank Internal combustion engine evaporates evaporated fuel vapors and feeds the valve via the hose line. The valve body is cylindrically stepped and consists of a larger cross-section Outer surface and a discharge nozzle outer surface with a smaller cross-section. The valve will graded according to the outer surfaces of the valve trained recess, which consists of a cross-sectionally larger and a cross-sectionally smaller part composed. Between the larger section and the smaller section is formed a paragraph, the when inserting the valve into the recess as a stop serves.

In der Ausnehmung des Ansaugmoduls ist an der querschnittskleineren Außenfläche des Abströmstutzens ein Dichtring angebracht, der ausschließlich zur Abdichtung des Abströmstutzens in der Ausnehmung vorgesehen ist. Im eingebauten Zustand des Ventils liegt dieses in der Ausnehmung am Absatz mit einer Ventilringfläche an. Auch die querschnittsgrößere Außenfläche des Ventils liegt dabei an einer Innenfläche des querschnittsgrößeren Teils in der Ausnehmung an. Zur Befestigung des Ventils weist die querschnittsgrößere Außenfläche des Ventils eine am Umfang umlaufende, radial von der Außenfläche abstehende Ringwulst auf. Des weiteren ist ein mit dem Ansaugmodul gehäusefest verbundener, sich nur teilweise in Umfangsrichtung erstreckender Klemmring vorgesehen, der beim Einführen des Ventils in die Ausnehmung von der Ringwulst etwas aufgebogen wird und sich danach wieder zurückbiegt, um so das Ventil zwischen der Stirnfläche des Ansaugmoduls und der Ringwulst zu halten.In the recess of the intake module is on the outer surface of the outflow nozzle with a smaller cross section Sealing ring attached, which is only used to seal the Outflow nozzle is provided in the recess. in the installed state of the valve this is in the Recess on the shoulder with a valve ring surface. Also the The valve has a larger cross-sectional outer surface an inner surface of the larger cross section in the Recess. To attach the valve, the cross-sectional larger outer surface of the valve on the circumference circumferential ring bead protruding radially from the outer surface on. Furthermore, one is fixed to the housing with the intake module connected, only partially in the circumferential direction extending clamping ring is provided which when inserting the Valve slightly bent into the recess by the ring bead and then bends back, so the valve between the face of the intake module and the ring bead to keep.

Das auch als Tankentlüftungsventil oder Regenerierventil dem Fachmann bekannte Ventil ist elektromagnetisch betätigbar ausgebildet und besitzt einen Elektromagneten, der auf einen Anker mit einem Ventilschließglied einwirkt, um den über den Zuströmstutzen in das Ventil einströmenden Brennstoff in getakteter Weise aus dem Abströmstutzen in den Ansaugkanal des Ansaugmoduls abzugeben. Die getaktete Ansteuerungsweise des Ventils hat jedoch den Nachteil, daß sich ein relativ lautes Geräusch beim Betrieb des Ventils ergibt. Bei der beschriebenen Unterbringung des Ventils in eine Ausnehmung des Ansaugmoduls steht die Außenfläche und die Ventilringfläche des Ventils in Kontakt mit der Innenfläche beziehungsweise dem Absatz der Ausnehmung, wodurch sich das Betriebsgeräusch des Ventils verstärkt. Außerdem ist die Ausbildung einer Ringwulst am Gehäuse des Ventils konstruktiv relativ aufwendig zu bewerkstelligen, so daß sich relativ hohe Herstellungskosten bei einer Massenherstellung ergeben. Auch die Montage und Demontage des Ventils mittels eines Klemmringes ist relativ aufwendig.This also as a tank ventilation valve or regeneration valve Valve known to those skilled in the art can be actuated electromagnetically trained and has an electromagnet on a Anchor acts with a valve closing member to the over the Inflow nozzle into the fuel flowing into the valve clocked from the discharge nozzle into the intake duct of the intake module. The clocked control mode However, the valve has the disadvantage that it is a relative loud noise results when operating the valve. In the described housing of the valve in a recess of the intake module is the outer surface and the valve ring surface of the valve in contact with the inner surface or the paragraph of the recess, which is the Operating noise of the valve amplified. Besides, that is Formation of an annular bead on the valve housing constructively relatively expensive to accomplish, so that relatively high manufacturing costs at a Result in mass production. Also assembly and disassembly the valve by means of a clamping ring is relatively expensive.

Die vorgenannten Nachteile gelten auch für Aggregate in Form von Einspritzventilen (US-PS 5,156,133 GB-PS 1 603 501), Abgasrückführventilen (WO 95/27134) und anderen Ventilen (US-PS 5,497,746). Auch bei mit sogenannter Schwingsaugrohr-Aufladung ausgestatteten Brennkraftmaschinen, bei denen ein Umschaltventil (DE-OS 41 05 938) zum Beispiel zwischen zwei Saugrohrlängen umschalten kann, ergeben sich die bereits genannten Nachteile.The aforementioned disadvantages also apply to units in the form of injection valves (US-PS 5,156,133 GB-PS 1 603 501), Exhaust gas recirculation valves (WO 95/27134) and other valves (U.S. Patent 5,497,746). Even with so-called vibrating intake manifold charging equipped internal combustion engines, in which a Changeover valve (DE-OS 41 05 938) for example between two Can switch intake manifold lengths, they already result disadvantages mentioned.

Bekannt ist es ebenfalls durch die US-A-5 121 731, das Unterteil einer Einspritzdüse durch an zwei Abschnitten vorgesehenen Dichtringen zu lagern und bei einer Rohrkupplung (JP 7208667A; GB 842247C) ein Innenrohr in einem Außenrohr über zwei Dichtungen mit Abstand zu halten.It is also known from US-A-5 121 731 that Lower part of an injector through two sections to store the intended sealing rings and at a Pipe coupling (JP 7208667A; GB 842247C) an inner pipe in to keep an outer tube at a distance via two seals.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Aggregat mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß auf einfache Art und Weise eine geräuschgedämmte Anordnung und Befestigung des Aggregats erfolgt, wobei das Aggregat nur ein leises Betriebsgeräusch verursacht und ohne großen Aufwand montierbar und demontierbar ist. The unit according to the invention with the characteristic Features of claim 1 has the advantage that a silent arrangement in a simple way and attachment of the unit takes place, the unit only causes a quiet operating noise and without large Effort can be assembled and disassembled.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Aggregats möglich.By the measures listed in the subclaims advantageous further developments and improvements of the Claim 1 specified unit possible.

Von besonderem Vorteil ist, daß das Aggregat in einfacher und kostengünstiger Weise herzustellen und insbesondere am Ansaugmodul mittels der Schnappverbindung in einfacher Art und Weise zu montieren und auch zu demontieren ist.It is particularly advantageous that the unit is simpler and inexpensive to manufacture and especially on Intake module by means of the snap connection in a simple way and how to assemble and disassemble.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine teilweise Schnittdarstellung einer Seitenansicht eines erfindungsgemäß ausgebildeten Aggregats nach einem ersten erfindungsgemäßen Ausführungsbeispiel, Figur 2 eine Draufsicht auf das Aggregat nach Figur 1, Figur 3 eine perspektivische Darstellung des erfindungsgemäßen Aggregats mit zugehöriger Befestigung nach einem zweiten erfindungsgemäßen AusführungsbeispielEmbodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail. 1 shows a partial sectional view of a side view of a Unit designed according to the invention after a first Embodiment according to the invention, Figure 2 a Top view of the unit according to Figure 1, Figure 3 a perspective view of the unit according to the invention with associated attachment after a second Embodiment according to the invention

Beschreibung der AusführungsbeispieleDescription of the embodiments

Das im folgenden mit 1 gekennzeichnete Aggregat ist für eine Brennkraftmaschine vorgesehen und wird hierzu in eine Einbauwandung 20 einer Betriebsmittelleitung 2 der Brennkraftmaschine eingeführt. Bei der Betriebsmittelleitung 2 kann es sich, wie in Figur 1 dargestellt ist, zum Beispiel um ein Ansaugrohr der Brennkraftmaschine handeln, durch das hindurch die Brennkraftmaschine Luft aus der Umgebung ansaugen kann, der mittels eines beispielsweise in Form eines herkömmlichen Einspritzventils ausgebildeten Aggregats 1 Brennstoff zur nachfolgenden Verbrennung in Brennräumen der Brennkraftmaschine hinzugefügt wird. Der Aufbau eines Einspritzventils ist dem Fachmann zum Beispiel aus der US-PS 5,156,133 oder aus der GB-PS 1 603 501 hinreichend bekannt. The unit labeled 1 below is for one Internal combustion engine is provided and is for this purpose in a Installation wall 20 of a resource line 2 Internal combustion engine introduced. At the resource management 2, as shown in FIG. 1, for example act as an intake pipe of the internal combustion engine, through which through the engine air from the environment can suck in, for example, in the form a conventional injection valve trained unit 1 fuel for subsequent combustion in combustion chambers is added to the internal combustion engine. Building a Injector is known to the person skilled in the art, for example, from the US PS 5,156,133 or from GB-PS 1 603 501 well known.

Es ist aber auch möglich, daß es sich bei dem Aggregat 1 um ein Wegeventil einer Umschalteinrichtung handelt, die zum Beispiel mit einem Stellantrieb ausgestattet ist, um durch Schalten die Länge des Ansaugrohres verändern zu können. Derartige Umschalteinrichtungen für mit sogenannter Schwingsaugrohr-Aufladung ausgestatteten Brennkraftmaschinen sind dem Fachmann zum Beispiel aus der DE-OS 41 05 938 hinreichend bekannt.But it is also possible that the unit 1 a directional control valve of a switching device that is used for Example is equipped with an actuator to move through Switch to be able to change the length of the intake pipe. Such switching devices for with so-called Vibrating intake manifold supercharged internal combustion engines are the expert for example from DE-OS 41 05 938 well known.

Bei der Betriebsmittelleitung kann es sich auch um einen Drosselklappenstutzen der Brennkraftmaschine handeln, in welchem ein Drosselorgan zum Beispiel in Form einer Drosselklappe drehbar untergebracht ist, um mit dem Drosselorgan die im Drosselklappenstutzen beziehungsweise der Betriebsmittelleitung 2 strömende Luft zu steuern. Dabei kann ein als Leerlaufregelventil ausgebildetes Aggregat zur Steuerung der Leerlaufluftmenge in einem um das Drosselorgan herumgeführten Bypass am Drosselklappenstutzen angebracht sein. Ein derartiger Aufbau ist dem Fachmann zum Beispiel aus der US-PS 5,497,746 hinreichend bekannt.The resource management can also be one Throttle valve body of the internal combustion engine act in which a throttle body for example in the form of a Throttle is rotatably housed with the Throttle body in the throttle body respectively the operating line 2 to control flowing air. there can a unit designed as an idle control valve Control of the idle air volume in one around the throttle body bypass attached to the throttle body his. Such a structure is known to the person skilled in the art, for example well known from US Pat. No. 5,497,746.

Bei der Betriebsmittelleitung kann es sich aber auch um eine Abgasrückführleitung handeln, an der ein Abgasrückführungsventil angebracht ist, um den Abgasstrom entsprechend zu steuern. Der Aufbau eines derartigen Ventils ist dem Fachmann beispielsweise aus der WO 95/27134 hinreichend bekannt.The resource management can also be a Exhaust gas recirculation line act on the exhaust gas recirculation valve is attached to the exhaust gas flow accordingly Taxes. The structure of such a valve is Sufficient expert for example from WO 95/27134 known.

Im folgenden wird die Erfindung anhand eines ebenfalls ein Aggregat für eine Brennkraftmaschine darstellenden Ventils 1 exemplarisch aufgezeigt, das beispielsweise zum dosierten Einleiten von aus einem Brennstofftank einer Brennkraftmaschine verflüchtigtem Brennstoff in die Betriebsmittelleitung 2 der Brennkraftmaschine vorgesehen ist. Die Betriebsmittelleitung 2 stellt zum Beispiel einen Ansaugkanal 2 eines Ansaugmoduls 3 der Brennkraftmaschine dar. Das Ventil 1 wird dabei in eine Ausnehmung 10 der Einbauwandung 20 der Betriebsmittelleitung 2 beziehungsweise des Ansaugmoduls 3 eingeführt. Das in Figur 1 in teilweiser Schnittdarstellung in Seitenansicht schematisch vereinfacht gezeigte Ventil 1 ist elektromagnetisch betätigbar ausgebildet und zum Beispiel Teil eines nicht näher dargestellten Brennstoffverdunstungs-Rückhaltesystems einer Brennkraftmaschine, dessen Aufbau und Funktion, beispielsweise der Bosch Technischen Unterrichtung, Motormanagement Motronic, zweite Ausgabe, August 1993, auf Seiten 48 und 49 entnehmbar ist. Der Aufbau und die Wirkungsweise eines derartigen, dem Fachmann auch als Regenerierventil oder Tankentlüftungsventil bekannten Ventils 1 ist aus der DE-OS 40 23 044 bekannt, deren Offenbarung ebenfalls Bestandteil der hier vorliegenden Patentanmeldung sein soll.In the following, the invention is also based on a Unit for a valve representing an internal combustion engine 1 demonstrated by way of example, for example for metering Introducing from a fuel tank of an internal combustion engine volatilized fuel into the equipment line 2 of the internal combustion engine is provided. The Resource line 2 provides one, for example Intake duct 2 of an intake module 3 of the internal combustion engine The valve 1 is in a recess 10 of the Installation wall 20 of the equipment line 2 or of the intake module 3 introduced. That in Figure 1 in part Sectional view schematically simplified in side view shown valve 1 can be actuated electromagnetically trained and for example part of a no closer shown fuel evaporation retention system Internal combustion engine, its structure and function, for example Bosch technical information, engine management Motronic, second edition, August 1993, pages 48 and 49 is removable. The structure and mode of operation of a such, the expert also as a regeneration valve or Tank vent valve known valve 1 is from DE-OS 40 23 044 known, the disclosure of which is also part of the present patent application.

Das Ventil 1 besitzt ein Gehäuse 4, das vorzugsweise aus Kunststoff besteht und zum Beispiel in Kunststoffspritzgußtechnik hergestellt ist. Das Ventil 1 dient zum Einleiten des vom Brennstoffverdunstungs-Rückhaltesystem zurückgehaltenen Brennstoffs in den Ansaugkanal 2 des Ansaugmoduls 3 der Brennkraftmaschine. Der Ansaugmodul 3 besteht vorzugsweise wie das Gehäuse 4 des Ventils 1 aus einem Kunststoff, der den hohen Festigkeitsbeanspruchungen und hohen Temperaturen der Brennkraftmaschine standhalten kann. Ein geeigneter Kunststoff ist hierfür beispielsweise Polyamid.The valve 1 has a housing 4, which is preferably made of Plastic exists and for example in plastic injection molding technology is made. The valve 1 is used to initiate that retained by the evaporative emission control system Fuel into the intake duct 2 of the intake module 3 the internal combustion engine. The suction module 3 exists preferably like the housing 4 of the valve 1 from one Plastic that withstands the high strength and can withstand high temperatures of the internal combustion engine. A suitable plastic is, for example Polyamide.

Das Gehäuse 4 des Ventils 1 ist zylindrisch abgestuft ausgebildet und setzt sich aus einer ersten umlaufenden, querschnittskleineren Außenfläche 7 eines ersten Abschnitts 8 und einer zweiten umlaufenden, querschnittsgrößeren Außenfläche 6 eines zweiten Abschnitts 9 zusammen. Das Ventil 1 wird in die entsprechend der Außenflächen 6, 7 des Ventils 1 abgestuft ausgebildete Ausnehmung 10 im Ansaugmodul 3 zumindest teilweise in die Ausnehmung 10 eingeführt, die sich entlang einer Längsachse 5 aus einem querschnittsgrößeren Teil 14 mit einer querschnittsgrößeren Innenfläche 11 und einem querschnittskleineren Teil 15 mit einer querschnittskleineren Innenfläche 12 zusammensetzt. Zwischen den beiden Teilen 14, 15 wird ein Absatz 16 gebildet, der eine Ringfläche 17 aufweist. Beide Teile 14, 15 verlaufen zentrisch zur Längsachse 5 und haben einen zylindrischen Querschnitt, der etwas größer ist als der in den Teilen 14, 15 aufgenommene, von den Außenflächen 6, 7 begrenzte, jeweilige zylindrische Querschnitt der Abschnitte 8 beziehungsweise 9 des Ventils 1, so daß im eingebauten Zustand des Ventils 1 zwischen den Außenflächen 6, 7 und den Innenflächen 11, 12 sich zwei radiale Spalte 48, 49 ergeben. Die querschnittskleinere Innenfläche 12 geht in einen Kanal 18 über, der in den Ansaugkanal 2 mündet, durch den hindurch die Brennkraftmaschine Luft aus der Umgebung zur nachfolgenden Gemischbildung ansaugen kann. Die Zufuhr des vom Brennstoffverdunstungs-Rückhaltesystem zwischengespeicherten Brennstoffs zu dem Ventil 1 erfolgt beispielsweise über eine Zusatzleitung 13, die beispielsweise in Form einer Schlauchleitung ausgebildet ist und an einem an einem oberen Gehäuseteil 21 des Ventils 1 vorgesehenen Zuströmstutzen 22 angebracht ist. Aus einem dem Zuströmstutzen 22 gegenüberliegenden Abströmstutzen 23 des Ventils 1, der hier dem ersten Abschnitt 8 entspricht, wird der Brennstoff vorzugsweise stromabwärts einer im Ansaugkanal 2 des Ansaugmoduls 3 drehbar untergebrachten Drosselklappe aus dem Kanal 18 in den Ansaugkanal 2 abgegeben. Das Ventil 1 steuert in seinem Inneren einen Durchgangsquerschnitt zum Beispiel mittels einem mit einem Ventilsitz zusammenwirkenden Schließkörper. Im Durchgangsquerschnitt strömt als Medium zum Beispiel dampfförmiger Brennstoff und Luft über die Zusatzleitung 13 in das Ventil 1, um dieses Brennstoff-Luft-Gemisch danach zum Beispiel in getakteter Weise aus dem Abströmstutzen 23 in den Kanal 18 abzugeben.The housing 4 of the valve 1 is stepped cylindrically trained and consists of a first rotating, cross-sectionally smaller outer surface 7 of a first section 8 and a second circumferential, larger cross-section Outer surface 6 of a second section 9 together. The Valve 1 is in the corresponding to the outer surfaces 6, 7 of the Valve 1 graduated recess 10 in Intake module 3 at least partially into recess 10 introduced, which along a longitudinal axis 5 from a cross-sectionally larger part 14 with a cross-sectionally larger Inner surface 11 and a part 15 with a smaller cross section an inner surface 12 of smaller cross-section. Between the two parts 14, 15, a paragraph 16 formed, which has an annular surface 17. Both parts 14, 15 run centrally to the longitudinal axis 5 and have one cylindrical cross section, which is slightly larger than that in the parts 14, 15 received by the outer surfaces 6, 7 limited, respective cylindrical cross section of the sections 8 or 9 of the valve 1, so that in the built State of the valve 1 between the outer surfaces 6, 7 and Inner surfaces 11, 12 result in two radial gaps 48, 49. The inner surface 12 with a smaller cross section goes into a channel 18 over, which opens into the intake duct 2, through the the internal combustion engine air from the environment subsequent suction mixture formation. The feed of the temporarily stored by the fuel evaporation retention system Fuel to the valve 1 takes place, for example via an additional line 13, for example in the form a hose line is formed and on one on one upper housing part 21 of the valve 1 provided inlet connection 22 is attached. From an inflow neck 22 opposite outflow nozzle 23 of the valve 1, which here corresponds to the first section 8, the fuel preferably downstream one in the intake duct 2 of the Intake module 3 rotatably accommodated throttle valve from the Channel 18 discharged into intake duct 2. The valve 1 controls a passage cross section inside Example using a cooperating with a valve seat Closing body. In the passage cross-section flows as Medium for example vapor fuel and air over the additional line 13 in the valve 1 to this fuel-air mixture then, for example, in a clocked manner from the To discharge spigot 23 in the channel 18.

Erfindungsgemäß sind an den Außenflächen 6 und 7 des Ventils 1 zwei Dichtringe, ein querschnittskleinerer erster Dichtring 25 und ein querschnittsgrößerer zweiter Dichtring 26 vorgesehen. Die Dichtringe 25, 26 dienen neben der Abdichtung des Ventils 1 in der Ausnehmung 10 erfindungsgemäß auch zur Lagerung und Befestigung des Ventils 1 in der Ausnehmung 10. Beide Dichtringe 25, 26 bestehen hierzu aus einem elastischen Material, vorzugsweise aus Gummi. Die Dichtringe 25, 26 sind beispielsweise in Form sogenannter O-Ringe ausgebildet, die einen kreisförmigen Querschnitt aufweisen. Wie in der Figur 1 dargestellt ist, ist der erste Dichtring 25 in eine aus der Außenfläche 7 ausgenommene erste Ringnut 30 des ersten Abschnitts 8 des Gehäuses 4 eingebracht. Der zweite Dichtring 26 ist in gleicher Weise in eine aus der zweiten Außenfläche 6 ausgenommene zweite Ringnut 31 des zweiten Abschnitts 9 des Gehäuses 4 eingebracht. Beide Dichtringe 25, 26 ragen radial über ihre jeweiligen Außenflächen 6, 7 hinaus und werden beim Einführen des Ventils 1 in die Ausnehmung 10 elastisch verformt, wobei sie das Ventil 1 radial führen, jedoch zwischen den Innenflächen 11, 12 der Ausnehmung 10 und den Außenflächen 6, 7 des Ventils 1 die radialen Spalte 48, 49 verbleiben.According to the invention on the outer surfaces 6 and 7 of the valve 1 two sealing rings, one with a smaller cross-section Sealing ring 25 and a cross-sectional larger second sealing ring 26 provided. The sealing rings 25, 26 are used in addition to the Sealing of the valve 1 in the recess 10 according to the invention also for storage and fastening of the valve 1 in the Recess 10. Both sealing rings 25, 26 consist of this an elastic material, preferably rubber. The Sealing rings 25, 26 are, for example, in the form of so-called O-rings formed a circular cross section exhibit. As shown in Figure 1, the first is Sealing ring 25 in a recessed from the outer surface 7 first annular groove 30 of the first section 8 of the housing 4 brought in. The second sealing ring 26 is in the same way into a second recessed from the second outer surface 6 Annular groove 31 of the second section 9 of the housing 4 brought in. Both sealing rings 25, 26 project radially beyond their respective outer surfaces 6, 7 and are at Inserting the valve 1 into the recess 10 elastically deformed, leading the valve 1 radially, however between the inner surfaces 11, 12 of the recess 10 and the Outer surfaces 6, 7 of valve 1 have radial gaps 48, 49 remain.

Die querschnittsgrößere Innenfläche 11 der Ausnehmung 10 wird teilweise von einem über eine Stirnfläche 35 des Ansaugmoduls 3 hinausragenden, hülsenförmigen Ansatz 36 gebildet. Wie in Figur 2, einer Draufsicht auf die Figur 1, dargestellt ist, setzt sich der hülsenförmige Ansatz 36 aus mehreren Ring-Schnapp-Elementen 40 zusammen. Die eine Schnappvorrichtung zur Halterung des Ventils 1 bildenden Ring-Schnapp-Elemente 40 sind am Umfang durch in Richtung der Längsachse 5 parallel verlaufende Einstiche 41 voneinander abgetrennt, so daß beispielsweise zwölf zungenartige Ring-Schnapp-Elemente 40 vorhanden sind, die sich am Umfang des Ansatzes 36 gleichmäßig verteilen. Die einzelnen Ring-Schnapp-Elemente 40 sind biegbar zum Beispiel aus Kunststoff ausgebildet und können sich beim Einführen des Ventils 1 vom Gehäuse 4 des Ventils 1 entsprechend wegbiegen. Der hülsenförmige Ansatz 36 mit den Ring-Schnapp-Elementen 40 besteht beispielsweise wie das Ansaugmodul 3 aus Kunststoff und wird beim Herstellen des Ansaugmoduls 3 zum Beispiel in Kunststoffspritzgußtechnik mitangespritzt.The larger cross-sectional inner surface 11 of the recess 10 is partially from an end face 35 of the Intake module 3 protruding, sleeve-shaped extension 36 educated. As in FIG. 2, a top view of FIG. 1, is shown, the sleeve-shaped extension 36 exposes itself several ring snap elements 40 together. The one Snap device for holding the valve 1 forming Ring snap elements 40 are circumferential in the direction recesses 41 running parallel to the longitudinal axis 5 separated from each other, so that for example twelve tongue-like ring snap elements 40 are present that are evenly distributed over the circumference of the extension 36. The individual ring snap elements 40 are bendable for example made of plastic and can be inserted of valve 1 from housing 4 of valve 1 accordingly bend away. The sleeve-shaped extension 36 with the ring snap elements 40 is, for example, like the intake module 3 made of plastic and is used in the manufacture of the intake module 3 for example injection molded in plastic injection molding technology.

Wie in Figur 1 dargestellt ist, weist der über die Stirnfläche 35 des Ansaugmoduls 3 überstehende, hülsenförmige Ansatz 36 eine umlaufende rinnenförmige Vertiefung 45 in der querschnittsgrößeren Innenfläche 11 auf, die sich entlang der einzelnen Ring-Schnapp-Elemente 40 erstreckt und zur Aufnahme des querschnittsgrößeren zweiten Dichtrings 26 vorgesehen ist. Beim Einführen des Ventils 1 in die Ausnehmung 10 gelangt dieses mit dem Abströmstutzen 23 vom querschnittsgrößeren Teil 14 in den querschnittskleineren Teil 15 der Ausnehmung 10, wobei der querschnittskleinere erste Dichtring 25 entlang der Innenfläche 12 im querschnittskleineren Teil 15 solange entlanggleitet, bis der zweite Dichtring 26 in die rinnenförmige Vertiefung 45 der dann etwas aufgebogenen Ring-Schnapp-Elemente 40 einschnappt. Die axialen Abstände des zweiten Dichtringes 26 beziehungsweise der zweiten Ringnut 31 und der rinnenförmigen Vertiefung 45 in der Innenfläche 31 von der Ringfläche 17 sind derart gewählt, daß zwischen der Ringfläche 17 und einer zwischen der querschnittsgrößeren Außenfläche 6 und der querschnittskleineren Außenfläche 7 verbleibenden Ventilringfläche 19 sich ein axialer Spalt 47 ergibt. Der axiale Spalt 47 und die radialen Spalte 48, 49 schließen einen Kontakt des Ventils 1 an Flächen 11, 12 und 17 in der Ausnehmung 10 aus.As shown in Figure 1, the has the End surface 35 of the intake module 3 protruding sleeve-shaped approach 36 a circumferential groove-shaped Indentation 45 in the inner surface 11 with a larger cross section that extend along the individual ring snap elements 40 extends and to accommodate the larger cross-section Sealing ring 26 is provided. When inserting the valve 1 this passes into the recess 10 with the outflow nozzle 23 from the larger section 14 in the smaller section Part 15 of the recess 10, the smaller first sealing ring 25 along the Inner surface 12 in the smaller cross-section 15 as long slides along until the second sealing ring 26 in the trough-shaped recess 45 of the then slightly bent Ring snap elements 40 snaps. The axial distances of the second sealing ring 26 or the second Annular groove 31 and the groove-shaped recess 45 in the Inner surface 31 of the ring surface 17 are selected in such a way that between the annular surface 17 and one between the cross-sectionally larger outer surface 6 and the cross-sectionally smaller Outer surface 7 remaining valve ring surface 19 there is an axial gap 47. The axial gap 47 and the radial gaps 48, 49 close a contact of the Valve 1 on surfaces 11, 12 and 17 in the recess 10.

Aufgrund der formschlüssigen Aufnahme des querschnittsgrößeren zweiten Dichtringes 26 in der rinnenförmigen Vertiefung 45 und der Ringnut 31 ergibt sich quasi ein Festlager für das Ventil 1 in der Ausnehmung 10. Der querschnittskleinere erste Dichtring 25 liegt dabei nur radial dichtend an der Innenfläche 12 im querschnittskleineren Teil 15 der Ausnehmung 10 an und ist daher in seiner axialen Verschiebbarkeit in Richtung der Längsachse 5 nicht behindert, so daß dort quasi ein Loslager für das Ventil 1 gebildet wird. Durch die ausschließliche Lagerung des Ventils 1 mittels zweier Dichtringe 25, 26, derart, daß keine Berührung der Außenflächen 6, 7 des Ventils 1 an den Innenflächen 11, 12 in der Ausnehmung 10 erfolgen kann, wird eine elastische Lagerung geschaffen, die verhindert, daß vom Ventil 1 ausgehende Schwingungen auf das Ansaugmodul 3 übertragen werden können. Damit wird eine akustische Entkopplung des Ventils 1 in der Ausnehmung 10 geschaffen, die das Weiterleiten des Betriebsgeräusches des Ventils 1 stark verringert. Außerdem wird durch die elastisch verformten Dichtringe 25, 26 sichergestellt, daß ein ausreichender mechanischer Halt des Ventils 1 in der Ausnehmung 10 vorhanden ist.Due to the positive inclusion of the larger cross-section second sealing ring 26 in the groove-shaped Indentation 45 and the annular groove 31 result, as it were Fixed bearing for the valve 1 in the recess 10. The first sealing ring 25 with a smaller cross section lies only radially sealing on the inner surface 12 in a smaller cross-section Part 15 of the recess 10 and is therefore in its axial displacement in the direction of the longitudinal axis 5 not hindered, so that there is almost a floating bearing for the Valve 1 is formed. Due to the exclusive storage of the valve 1 by means of two sealing rings 25, 26, such that no contact of the outer surfaces 6, 7 of the valve 1 to the Inner surfaces 11, 12 can take place in the recess 10 created an elastic storage, which prevents the Valve 1 vibrations on the intake module 3 can be transferred. It becomes an acoustic Decoupling of the valve 1 created in the recess 10, the forwarding of the operating noise of the valve 1 greatly reduced. It is also elastic deformed sealing rings 25, 26 ensures that a sufficient mechanical hold of the valve 1 in the Recess 10 is present.

Zur Demontage des Ventils 1 kann beispielsweise ein eine U-Form aufweisender Keil zwischen die Ring-Schnapp-Elemente 40 und der Außenfläche 6 in den Spalt 48 eingeführt werden. Der Keil biegt beim Einführen in den Spalt 48 die Ring-Schnapp-Elemente 40 etwas auf, so daß die Schnappverbindung zwischen dem zweiten Dichtring 26 und den Ring-Schnapp-Elementen 40 gelöst wird und das Ventil 1 aus der Ausnehmung 10 entnommen werden kann. Wie in Figur 1 dargestellt ist, können die Ring-Schnapp-Elemente 40 einteilig am Ansaugmodul 3 am Absatz 36 ausgebildet und in einfacher Art und Weise beim Herstellen des Ansaugmoduls 3 zum Beispiel in Kunststoffspritzgußtechnik mitangespritzt werden.A U-shape can be used, for example, to dismantle the valve 1 wedge between the ring snap elements 40 and the outer surface 6 are inserted into the gap 48. The Wedge bends the ring snap elements when inserted into the gap 48 40 something so that the snap connection between the second sealing ring 26 and the ring snap elements 40 is released and the valve 1 is removed from the recess 10 can be. As shown in Figure 1, the Ring snap elements 40 in one piece on the intake module 3 on Paragraph 36 trained and in a simple manner at Manufacture of the intake module 3, for example, in plastic injection molding technology be injected.

Die Figur 3 zeigt ein zweites erfindungsgemäßes Ausführungsbeispiel, bei dem alle gleichen oder gleichwirkenden Teile mit denselben Bezugszeichen der Figuren 1 und 2 gekennzeichnet sind. In Figur 3 ist das Ventil 1 perspektivisch dargestellt, das zur Befestigung beziehungsweise Halterung in ein als Einbautopf 50 ausgebildetes, separates Bauteil eingebracht wird. Der Einbautopf 50 weist an seinem Umfang über einen Teil seiner axialen Erstreckung die Ring-Schnapp-Elemente 40 auf und bildet die Ausnehmung 10 für das Ventil 1. Der vorzugsweise aus Kunststoff bestehende Einbautopf 50 weist einen umlaufenden Ringrand 54 mit den Ring-Schnapp-Elementen 40 sowie einen Topfboden 55 und eventuell einen sich an den Topfboden 55 anschließenden Ansatzstutzen 56 auf und ist beispielsweise für aus Metall gefertigte Ansaugmodule 3 zur Befestigung des Ventils 1 am Ansaugmodul 3 vorgesehen. Hierzu wird der Einbautopf 50 zum Beispiel in eine entsprechend der äußeren Form des Einbautopfes 50 ausgebildete, in Figur 3 im Schnitt gestrichelt angedeutete, zylindrische Ausnehmung 52 im metallenen Ansaugmodul 3 eingebracht und in dieser beispielsweise mittels Klebung befestigt. Danach kann das Ventil 1 in den Einbautopf 50 eingeführt und mittels der Ring-Schnapp-Elemente 40 am Einbautopf 50 gehalten werden. Es ist selbstverständlich auch möglich, den Einbautopf 50 in eine zylindrische Ausnehmung eines aus Kunststoff bestehenden Ansaugmoduls 3 einzusetzen, um so das Ventil 1 am Ansaugmodul 3 zu befestigen.FIG. 3 shows a second exemplary embodiment according to the invention, where all the same or equivalent parts identified by the same reference numerals in FIGS. 1 and 2 are. In Figure 3, the valve 1 is in perspective shown, for attachment or mounting into a separate component designed as a built-in pot 50 is introduced. The mounting pot 50 has on its circumference the ring snap elements over part of its axial extent 40 and forms the recess 10 for the valve 1. The built-in pot 50, which is preferably made of plastic has a circumferential ring edge 54 with the ring snap elements 40 and a pot bottom 55 and possibly one connecting piece 56 adjoining the pot bottom 55 and is for example for intake modules made of metal 3 for fastening the valve 1 to the intake module 3 intended. For this purpose, the installation pot 50 is shown, for example, in one corresponding to the outer shape of the mounting pot 50 trained, indicated in dashed lines in Figure 3, cylindrical recess 52 in the metal intake module 3 introduced and in this for example by gluing attached. Thereafter, the valve 1 can be installed in the pot 50 introduced and by means of the ring snap elements 40 am Installation pot 50 are held. It goes without saying also possible, the built-in pot 50 in a cylindrical Recess of an intake module 3 made of plastic to use, so as to close valve 1 on intake module 3 Fasten.

Es sei nochmals erwähnt, daß die Erfindung nicht auf Ventile zum dosierten Einleiten von verflüchtigtem Brennstoff beschränkt ist. Es kann sich bei dem Aggregat auch um ein Einspritzventil bekannter Bauart handeln, wie es zum Beispiel aus der US-PS 5,156,133 oder aus der GB-PS 1 603 501 bekannt ist. Auch läßt sich die Erfindung auf sogenannte Abgasrückführungsventile ohne weiteres übertragen, wie sie zum Beispiel aus der WO 95/27134 bekannt sind. Desgleichen eignet sich die Erfindung auch für andere Ventile, zum Beispiel für Ventile zur Leerlaufregelung der Brennkraftmaschine, wie sie zum Beispiel aus der US-PS 5,497,746 bekannt sind. Auch ist eine Übertragung auf sogenannte Umschalt- oder Wegeventile bei mit Schwingsaugrohr-Aufladung ausgestatteten Brennkraftmaschinen möglich, wie sie zum Beispiel aus der DE-OS 41 05 938 bekannt sind.It should be mentioned again that the invention does not apply to valves for the metered introduction of volatilized fuel is limited. The unit can also be a Act fuel injector of known design, as it Example from US-PS 5,156,133 or from GB-PS 1 603 501 is known. The invention can also be based on so-called Exhaust gas recirculation valves easily transferred as they are known for example from WO 95/27134. Similarly the invention is also suitable for other valves, for Example of valves for idle control of the internal combustion engine, as for example from US Pat. No. 5,497,746 are known. There is also a transfer to so-called Change-over or directional control valves for with intake manifold charging equipped internal combustion engines possible, as for Example from DE-OS 41 05 938 are known.

Claims (11)

  1. Assembly for an internal combustion engine, which has a housing (4) with a first portion (8) having a first continuous outer face (7) and with at least one second portion (9) having at least one second continuous outer face (6), a first sealing ring (25) being placed onto the first outer face (7), and the first portion (8) and first sealing ring (25) being introduced into a recess (10) of an installation wall (20), a second sealing ring (26) being placed onto the second outer face (6) of the second portion (9), and the second portion (9) and second sealing ring (26) likewise being introduced into the recess (10), characterized in that the mounting of the assembly (1) in the recess (10) takes place by means of the two sealing rings (25, 26), without the first and second outer faces (6, 7) of the assembly (1) at the same time resting against inner faces (11, 12) of the recess (10), and in that the installation wall (20) has a sleeve-shaped extension (36), into which the recess (10) extends and which, for holding the assembly (1), is subdivided into a plurality of flexible annular snap elements (40), into which the second sealing ring (26) of the assembly (1) is snapped.
  2. Assembly according to Claim 1, characterized in that the first sealing ring (25) is introduced into a first annular groove (30) provided on the first outer face (7) of the assembly (1).
  3. Assembly according to Claim 1 or 2, characterized in that the second sealing ring (26) is introduced into a second annular groove (31) provided on the second outer face (6) of the assembly (1).
  4. Assembly according to Claim 1, characterized in that the second sealing ring (26) is snapped into a gutter-shaped depression (45) provided in the inner face (11) of the annular snap elements (40).
  5. Assembly according to Claim 1, characterized in that a gap (48, 49) is cut out between the outer faces (6, 7) of the assembly (1) and the inner faces (11, 12) of the recess (10).
  6. Assembly according to Claim 1, characterized in that the installation wall (20) consists of plastic.
  7. Assembly according to Claim 1 or 6, characterized in that the installation wall (20) is part of an intake module (3) of the internal combustion engine.
  8. Assembly according to Claim 1, characterized in that the installation wall (20) is part of an installation pot (50) which is arranged on an intake module (3) or an intake line of the internal combustion engine.
  9. Assembly according to Claim 8, characterized in that the installation pot (50) consists of plastic.
  10. Assembly according to Claim 1, characterized in that the assembly (1) is provided for controlling a passage cross section in an additional line (13) supplying a medium to a fuel line (2) of the internal combustion engine.
  11. Assembly according to Claim 1, characterized in that the assembly (1) is designed as a valve for the metered introduction of vaporized fuel.
EP96945738A 1996-05-25 1996-11-20 Unit with a snap-action fastening device Expired - Lifetime EP0840846B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19621221 1996-05-25
DE19621221A DE19621221A1 (en) 1996-05-25 1996-05-25 Unit and snap device for one unit
PCT/DE1996/002208 WO1997045635A1 (en) 1996-05-25 1996-11-20 Unit and snap-action device therefor

Publications (2)

Publication Number Publication Date
EP0840846A1 EP0840846A1 (en) 1998-05-13
EP0840846B1 true EP0840846B1 (en) 2002-02-20

Family

ID=7795388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945738A Expired - Lifetime EP0840846B1 (en) 1996-05-25 1996-11-20 Unit with a snap-action fastening device

Country Status (7)

Country Link
US (1) US5967121A (en)
EP (1) EP0840846B1 (en)
JP (1) JPH11511228A (en)
KR (1) KR19990035791A (en)
BR (1) BR9609582A (en)
DE (2) DE19621221A1 (en)
WO (1) WO1997045635A1 (en)

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Also Published As

Publication number Publication date
JPH11511228A (en) 1999-09-28
DE59608766D1 (en) 2002-03-28
KR19990035791A (en) 1999-05-25
EP0840846A1 (en) 1998-05-13
US5967121A (en) 1999-10-19
WO1997045635A1 (en) 1997-12-04
BR9609582A (en) 1999-02-23
DE19621221A1 (en) 1997-11-27

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