EP0840846A1 - Unit and snap-action device therefor - Google Patents

Unit and snap-action device therefor

Info

Publication number
EP0840846A1
EP0840846A1 EP96945738A EP96945738A EP0840846A1 EP 0840846 A1 EP0840846 A1 EP 0840846A1 EP 96945738 A EP96945738 A EP 96945738A EP 96945738 A EP96945738 A EP 96945738A EP 0840846 A1 EP0840846 A1 EP 0840846A1
Authority
EP
European Patent Office
Prior art keywords
unit
recess
sealing ring
section
unit 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.)
Granted
Application number
EP96945738A
Other languages
German (de)
French (fr)
Other versions
EP0840846B1 (en
Inventor
Gerhard Pirch
Erwin Krimmer
Udo Hafner
Wolfgang Schulz
Claus Sax
Tilman Miehle
Rolf Bald
Manfred Zimmermann
Bernd Koch
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0840846A1 publication Critical patent/EP0840846A1/en
Application granted granted Critical
Publication of EP0840846B1 publication Critical patent/EP0840846B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 relates to an assembly according to the preamble of claim 1 or 12 and a snap device for an assembly according to the preamble of claim 22.
  • Such an assembly in the form of a valve is already known (EP-OS 0 582 297), the Fuel is supplied via an inflow nozzle provided on the valve, in order to then dispense it in a metered manner from an outflow nozzle into an intake duct of an intake module.
  • the inflow connection piece of the valve is connected, for example, via a hose line to an absorption filter, which temporarily stores the fuel vapors volatilized from a fuel tank of the internal combustion engine and supplies it to the valve via the hose line.
  • the housing of the valve is formed cylindrically stepped and is composed of an outer surface of larger cross-section and an outer surface of smaller cross-section forming the outflow nozzle.
  • the valve is inserted into a recess which is graduated in accordance with the outer surfaces of the valve and is composed of a part with a larger cross section and a smaller part. A paragraph is formed between the larger section and the smaller section serves as a stop when inserting the valve into the recess.
  • the valve which is provided only for sealing the Abströmstutzen ⁇ in the recess.
  • the cross-sectionally larger outer surface of the valve also bears against an inner surface of the cross-sectionally larger part in the recess.
  • the outer surface of the valve which has a larger cross section, has an annular bead which extends around the circumference and projects radially from the outer surface.
  • a clamping ring which is fixed to the suction module and only partially extends in the circumferential direction is provided, which is slightly bent up by the annular bead when the valve is inserted into the recess and then bends back again, so that the valve between the end face of the suction module and the Hold ring bead.
  • the valve which is also known to those skilled in the art as a tank ventilation valve or regeneration valve, is designed to be electromagnetically operable and has an electromagnet which acts on an armature with a valve closing element in order to dispense the fuel flowing into the valve via the inflow nozzle in a timed manner from the outflow nozzle into the intake duct of the intake module .
  • the clocked control of the valve has the disadvantage that there is a relatively loud noise when operating the valve.
  • the outer surface and the valve ring surface of the valve are in contact with the inner surface or the shoulder of the recess, as a result of which Operating noise of the valve amplified.
  • annular bead on the housing of the valve is structurally relatively complex to accomplish, so that there are relatively high manufacturing costs in mass production.
  • the assembly and disassembly of the valve by means of a clamping ring is also relatively complex.
  • the unit according to the invention with the characterizing features of claim 1 or 12 or the snap device with the characterizing features of claim 22 has the advantage that a silent arrangement and attachment of the unit takes place in a simple manner, the unit causing only a quiet operating noise and can be assembled and disassembled with little effort.
  • Claim 1 or 12 specified unit or the snap device specified in claim 22 possible.
  • the unit can be manufactured in a simple and cost-effective manner, and in particular on The suction module can be easily assembled and disassembled by means of the snap connection.
  • FIG. 1 shows a partial sectional view of a side view of an assembly designed according to the invention according to a first embodiment according to the invention
  • FIG. 2 shows a top view of the assembly according to FIG. 1
  • FIG. 3 shows a perspective view of the assembly according to the invention with associated fastening according to a second embodiment according to the invention.
  • the unit labeled 1 below is intended for an internal combustion engine and is inserted into an installation wall 20 of an operating line 2 of the internal combustion engine for this purpose.
  • the operating medium line 2 can be, for example, an intake pipe of the internal combustion engine, through which the internal combustion engine can draw in air from the environment, which, for example, in the form of a conventional injection valve 1, provides fuel for subsequent combustion in combustion chambers of the internal combustion engine is added.
  • the construction of an injection valve is well known to the person skilled in the art, for example from US Pat. No. 5,156,133 or from GB Pat. No. 1,603,501.
  • the unit 1 is a directional control valve of a changeover device, which is equipped, for example, with an actuator in order to be able to change the length of the intake pipe by switching. Such switching devices for with so-called
  • the operating medium line can also be a throttle valve connector of the internal combustion engine, in which a throttle element, for example in the form of a throttle valve, is rotatably accommodated in order to use the throttle element to control the air flowing in the throttle valve nozzle or the operating medium line 2.
  • a throttle element for example in the form of a throttle valve
  • an aggregate designed as an idle control valve for controlling the amount of idle air can be attached to the throttle body in a bypass around the throttle element.
  • Such a structure is well known to the person skilled in the art, for example from US Pat. No. 5,497,746.
  • the equipment line can also be an exhaust gas recirculation line to which an exhaust gas recirculation valve is attached in order to control the exhaust gas flow accordingly.
  • the structure of such a valve is
  • valve 1 which also represents a unit for an internal combustion engine, which is provided, for example, for the metered introduction of fuel volatilized from a fuel tank of an internal combustion engine into the operating medium line 2 of the internal combustion engine.
  • the resource line 2 provides one, for example Intake channel 2 of an intake module 3 of the internal combustion engine.
  • the valve 1 is inserted into a recess 10 in the installation wall 20 of the operating medium line 2 or the intake module 3.
  • the valve 1 shown schematically simplified in a partial sectional illustration in a side view in FIG.
  • valve 1 is designed to be electromagnetically actuated and is, for example, part of a fuel evaporation restraint system of an internal combustion engine, the construction and function of which, for example, from Bosch Technical Instruction, Motor Management Motronic, second edition , August 1993, on pages 48 and 49.
  • the structure and the mode of operation of such a valve 1, which is also known to the person skilled in the art as a regeneration valve or tank ventilation valve, is known from DE-OS 40 23 044, the disclosure of which is also intended to be part of the present patent application.
  • the valve 1 has a housing 4, which is preferably made of plastic and is manufactured, for example, using plastic injection molding technology.
  • the valve 1 serves to introduce the fuel retained by the fuel evaporation retention system into the intake duct 2 of the intake module 3 of the internal combustion engine.
  • the suction module 3, like the housing 4 of the valve 1, is preferably made of a plastic that can withstand the high strength and high temperatures of the internal combustion engine.
  • a suitable plastic for this is, for example, polyamide.
  • the housing 4 of the valve 1 is formed cylindrically stepped and is composed of a first circumferential, cross-sectionally smaller outer surface 7 of a first section 8 and a second circumferential, cross-sectionally larger outer surface 6 of a second section 9.
  • the valve 1 is in the corresponding to the outer surfaces 6, 7 of the Valve 1 with a stepped recess 10 in the intake module 3 is at least partially inserted into the recess 10, which is composed along a longitudinal axis 5 of a part 14 with a larger cross section with an inner surface 11 with a larger cross section and a part 15 with a smaller cross section with an inner surface 12 with a smaller cross section.
  • a shoulder 16 is formed between the two parts 14, 15, which has an annular surface 17.
  • Both parts 14, 15 run centrally to the longitudinal axis 5 and have a cylindrical cross section which is somewhat larger than the respective cylindrical cross section of the sections 8 and 9 of the valve 1, which is received in the parts 14, 15 and is delimited by the outer surfaces 6, 7, so that in the installed state of the valve 1 between the outer surfaces 6, 7 and the inner surfaces 11, 12 there are two radial gaps 48, 49.
  • the inner surface 12 with a smaller cross section merges into a channel 18, which opens into the intake channel 2, through which the internal combustion engine can suck in air from the environment for the subsequent mixture formation.
  • the fuel temporarily stored by the fuel evaporation retention system is supplied to valve 1, for example, via an additional line 13, which is designed, for example, in the form of a hose line and is attached to an inflow connector 22 provided on an upper housing part 21 of valve 1 .
  • the fuel is preferably discharged downstream of a throttle valve 23 of the valve 1, which corresponds to the first section 8, opposite the inflow nozzle 22, downstream of a throttle valve rotatably accommodated in the intake duct 2 of the intake module 3 from the duct 18 into the intake duct 2.
  • the valve 1 controls a passage cross section in its interior, for example by means of a closing body cooperating with a valve seat. In the passage cross section, for example, vaporous fuel and air flows as a medium via the additional line 13 into the valve 1 in order to Air mixture thereafter, for example, in a clocked manner from the outlet 23 in the channel 18.
  • Sealing ring 25 and a cross-sectionally larger second sealing ring 26 are provided.
  • the sealing rings 25, 26 also serve to mount and fasten the valve 1 in the recess 10.
  • Both sealing rings 25, 26 are made of an elastic material, preferably rubber, for this purpose.
  • the sealing rings 25, 26 are, for example, in the form of so-called O-rings which have a circular cross section.
  • the first sealing ring 25 is introduced into a first annular groove 30 in the first section 8 of the housing 4, which is recessed from the outer surface 7.
  • the second sealing ring 26 is introduced into a second annular groove 31 of the second section 9 of the housing 4, which is recessed from the second outer surface 6.
  • Both sealing rings 25, 26 project radially beyond their respective outer surfaces 6, 7 and are elastically deformed when the valve 1 is inserted into the recess 10, guiding the valve 1 radially, but between the inner surfaces 11, 12 of the recess 10 and the outer surfaces 6, 7 of the valve 1, the radial gaps 48, 49 remain.
  • the cross-sectionally larger inner surface 11 of the recess 10 is partially formed by a sleeve-shaped extension 36 projecting beyond an end surface 35 of the suction module 3.
  • the sleeve-shaped extension 36 is composed of several ring snap elements 40.
  • the ring-snap elements 40 forming a snap device for holding the valve 1 are circumferentially through in the direction the longitudinal axis 5 parallel recesses 41 are separated from each other, so that, for example, twelve tongue-like ring snap elements 40 are present, which are evenly distributed on the circumference of the extension 36.
  • the individual ring snap elements 40 are bendable, for example made of plastic, and can accordingly bend away from the housing 4 of the valve 1 when the valve 1 is inserted.
  • the sleeve-shaped extension 36 with the ring snap elements 40 is made, for example, like the suction module 3 from plastic and is also molded on during the manufacture of the suction module 3, for example in plastic injection molding technology.
  • the sleeve-shaped extension 36 projecting beyond the end face 35 of the suction module 3 has a circumferential channel-shaped one
  • the axial distances between the second sealing ring 26 or the second annular groove 31 and the trough-shaped recess 45 in the inner surface 31 from the ring surface 17 are selected such that between the ring surface 17 and a valve ring surface remaining between the larger cross-sectional outer surface 6 and the smaller cross-sectional outer surface 7 19 there is an axial gap 47.
  • the axial gap 47 and the radial gaps 48, 49 preclude contact of the valve 1 on surfaces 11, 12 and 17 in the recess 10.
  • Inner surfaces 11, 12 can take place in the recess 10, an elastic mounting is created, which prevents vibrations emanating from the valve 1 from being transmitted to the intake module 3. This creates an acoustic decoupling of the valve 1 in the recess 10, which greatly reduces the transmission of the operating noise of the valve 1.
  • the elastically deformed sealing rings 25, 26 ensure that the valve 1 is sufficiently mechanically held in the recess 10.
  • a wedge having a U shape can be inserted into the gap 48 between the ring snap elements 40 and the outer surface 6.
  • the wedge bends the ring snap elements 40 slightly when inserted into the gap 48, so that the snap connection between the second sealing ring 26 and the ring snap elements 40 is released and the valve 1 can be removed from the recess 10.
  • the ring snap elements 40 can be made in one piece on the suction module 3 Paragraph 36 are formed and molded in a simple manner during the manufacture of the intake module 3, for example in plastic injection molding technology.
  • FIG. 3 shows a second exemplary embodiment according to the invention, in which all the same or equivalent parts are identified by the same reference numerals from FIGS. 1 and 2.
  • the valve 1 is shown in perspective, which is introduced into a separate component designed as a built-in pot 50 for attachment or mounting.
  • the mounting pot 50 has the ring snap elements 40 on its circumference over part of its axial extent and forms the recess 10 for the valve 1.
  • the mounting pot 50 which is preferably made of plastic, has a circumferential ring edge 54 with the ring snap elements 40 and a pot base 55 and possibly a connecting piece 56 adjoining the pot base 55 and is provided, for example, for intake modules 3 made of metal for fastening the valve 1 to the intake module 3.
  • the built-in pot 50 is, for example, introduced into a cylindrical recess 52 in the metal suction module 3, which is formed according to the outer shape of the built-in pot 50 and is indicated by dashed lines in FIG. 3, and is fastened therein, for example by means of adhesive.
  • the valve 1 can then be inserted into the mounting pot 50 and held on the mounting pot 50 by means of the ring snap elements 40. It is of course also possible to insert the installation pot 50 into a cylindrical recess in an intake module 3 made of plastic, in order to fasten the valve 1 to the intake module 3.
  • the unit can also be a Act injection valve of known type, as is known for example from US-PS 5,156,133 or from GB-PS 1 603 501.
  • the invention can also be readily transferred to so-called exhaust gas recirculation valves, as are known, for example, from WO 95/27134.
  • the invention is also suitable for other valves, for example valves for idle control of the internal combustion engine, as are known, for example, from US Pat. No. 5,497,746.
  • a transfer to so-called changeover or directional control valves is also possible in internal combustion engines equipped with an intake manifold supercharger, as are known, for example, from DE-OS 41 05 938.

Landscapes

  • 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

Aggregat und Schnappyorrichtung für ein AggregatUnit and snap device for one unit
Stand der TechnikState of the art
Die Erfindung geht aus von einem Aggregat nach der Gattung des Anspruchs 1 oder 12 und von einer Schnappvorrichtung für ein Aggregat nach der Gattung des Anspruchs 22. 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 Absorptions¬ filter angeschlossen, der die aus einem Brennstofftank der Brennkraftmaschine verflüchtigten Brennstoffdämpfe zwischen¬ speichert und über die Schlauchleitung dem Ventil zuführt. Das Gehäuse des Ventils ist zylindrisch abgestuft aus¬ gebildet 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 relates to an assembly according to the preamble of claim 1 or 12 and a snap device for an assembly according to the preamble of claim 22. Such an assembly in the form of a valve is already known (EP-OS 0 582 297), the Fuel is supplied via an inflow nozzle provided on the valve, in order to then dispense it in a metered manner from an outflow nozzle into an intake duct of an intake module. The inflow connection piece of the valve is connected, for example, via a hose line to an absorption filter, which temporarily stores the fuel vapors volatilized from a fuel tank of the internal combustion engine and supplies it to the valve via the hose line. The housing of the valve is formed cylindrically stepped and is composed of an outer surface of larger cross-section and an outer surface of smaller cross-section forming the outflow nozzle. The valve is inserted into a recess which is graduated in accordance with the outer surfaces of the valve and is composed of a part with a larger cross section and a smaller part. A paragraph is formed between the larger section and the smaller section serves as a stop when inserting the valve into the recess.
In der Ausnehmung des Ansaugmoduls ist an der querschnittskleineren Außenfläche des Abströmstutzens einIn the recess of the intake module is on the outer surface of the outflow nozzle with a smaller cross section
Dichtring angebracht, der ausschließlich zur Abdichtung des Abströmstutzenε 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.Mounted sealing ring, which is provided only for sealing the Abströmstutzenε in the recess. When the valve is installed, it rests in the recess on the shoulder with a valve ring surface. The cross-sectionally larger outer surface of the valve also bears against an inner surface of the cross-sectionally larger part in the recess. To fasten the valve, the outer surface of the valve, which has a larger cross section, has an annular bead which extends around the circumference and projects radially from the outer surface. Furthermore, a clamping ring which is fixed to the suction module and only partially extends in the circumferential direction is provided, which is slightly bent up by the annular bead when the valve is inserted into the recess and then bends back again, so that the valve between the end face of the suction module and the Hold ring bead.
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 Ventilring¬ fläche 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 Massenher- Stellung ergeben. Auch die Montage und Demontage des Ventils mittels eines Klemmringes ist relativ aufwendig.The valve, which is also known to those skilled in the art as a tank ventilation valve or regeneration valve, is designed to be electromagnetically operable and has an electromagnet which acts on an armature with a valve closing element in order to dispense the fuel flowing into the valve via the inflow nozzle in a timed manner from the outflow nozzle into the intake duct of the intake module . The clocked control of the valve has the disadvantage that there is a relatively loud noise when operating the valve. When the valve is accommodated in a recess in the intake module as described, the outer surface and the valve ring surface of the valve are in contact with the inner surface or the shoulder of the recess, as a result of which Operating noise of the valve amplified. In addition, the formation of an annular bead on the housing of the valve is structurally relatively complex to accomplish, so that there are relatively high manufacturing costs in mass production. The assembly and disassembly of the valve by means of a clamping ring is also relatively complex.
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 VentilenThe aforementioned disadvantages also apply to units in the form of injection valves (US Pat. No. 5,156,133, GB Pat. No. 1,603,501), exhaust gas recirculation valves (WO 95/27134) and other valves
(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.(U.S. Patent 5,497,746). The disadvantages already mentioned also arise in internal combustion engines equipped with so-called vibrating intake manifold supercharging, in which a changeover valve (DE-OS 41 05 938) can for example switch between two intake manifold lengths.
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Aggregat mit den kennzeichnenden Merkmalen des Anspruchs 1 oder 12 beziehungsweise die SchnappVorrichtung mit den kennzeichnenden Merkmalen des Anspruchs 22 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 characterizing features of claim 1 or 12 or the snap device with the characterizing features of claim 22 has the advantage that a silent arrangement and attachment of the unit takes place in a simple manner, the unit causing only a quiet operating noise and can be assembled and disassembled with little effort.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des imThe measures listed in the dependent claims are advantageous further developments and improvements in
Anspruch 1 oder 12 angegebenen Aggregats beziehungsweise der im Anspruch 22 angegebenen Schnappvorrichtung möglich.Claim 1 or 12 specified unit or the snap device specified in claim 22 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 can be manufactured in a simple and cost-effective manner, and in particular on The suction module can be easily assembled and disassembled by means of the snap connection.
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 Ausführungsbeispiel .Embodiments of the invention are shown in simplified form in the drawing and explained in more detail in the following description. 1 shows a partial sectional view of a side view of an assembly designed according to the invention according to a first embodiment according to the invention, FIG. 2 shows a top view of the assembly according to FIG. 1, FIG. 3 shows a perspective view of the assembly according to the invention with associated fastening according to 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 Einspritzventilε 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. 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 sogenannterThe unit labeled 1 below is intended for an internal combustion engine and is inserted into an installation wall 20 of an operating line 2 of the internal combustion engine for this purpose. As shown in FIG. 1, the operating medium line 2 can be, for example, an intake pipe of the internal combustion engine, through which the internal combustion engine can draw in air from the environment, which, for example, in the form of a conventional injection valve 1, provides fuel for subsequent combustion in combustion chambers of the internal combustion engine is added. The construction of an injection valve is well known to the person skilled in the art, for example from US Pat. No. 5,156,133 or from GB Pat. No. 1,603,501. But it is also possible that the unit 1 is a directional control valve of a changeover device, which is equipped, for example, with an actuator in order to be able to change the length of the intake pipe by switching. Such switching devices for with so-called
Schwingsaugrohr-Aufladung ausgestatteten Brennkraftmaschinen sind dem Fachmann zum Beispiel aus der DE-OS 41 05 938 hinreichend bekannt.Internal combustion engines equipped with vibrating intake manifold charging are well known to the person skilled in the art, for example from DE-OS 41 05 938.
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 operating medium line can also be a throttle valve connector of the internal combustion engine, in which a throttle element, for example in the form of a throttle valve, is rotatably accommodated in order to use the throttle element to control the air flowing in the throttle valve nozzle or the operating medium line 2. In this case, an aggregate designed as an idle control valve for controlling the amount of idle air can be attached to the throttle body in a bypass around the throttle element. Such a structure is well known to the person skilled in the art, for example from US Pat. No. 5,497,746.
Bei der Betriebsmittelleitung kann es sich aber auch um eine Abgasrückführleitung handeln, an der ein Abgasrückführungs- ventil angebracht ist, um den Abgasstrom entsprechend zu steuern. Der Aufbau eines derartigen Ventils ist demThe equipment line can also be an exhaust gas recirculation line to which an exhaust gas recirculation valve is attached in order to control the exhaust gas flow accordingly. The structure of such a valve is
Fachmann beispielsweise aus der WO 95/27134 hinreichend bekannt.A person skilled in the art, for example, is well known from WO 95/27134.
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 Brennkraft¬ maschine verflüchtigtem Brennstoff in die Betriebsmittel¬ leitung 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, beispiels- weise 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 exemplarily shown on the basis of a valve 1, which also represents a unit for an internal combustion engine, which is provided, for example, for the metered introduction of fuel volatilized from a fuel tank of an internal combustion engine into the operating medium line 2 of the internal combustion engine. The resource line 2 provides one, for example Intake channel 2 of an intake module 3 of the internal combustion engine. The valve 1 is inserted into a recess 10 in the installation wall 20 of the operating medium line 2 or the intake module 3. The valve 1 shown schematically simplified in a partial sectional illustration in a side view in FIG. 1 is designed to be electromagnetically actuated and is, for example, part of a fuel evaporation restraint system of an internal combustion engine, the construction and function of which, for example, from Bosch Technical Instruction, Motor Management Motronic, second edition , August 1993, on pages 48 and 49. The structure and the mode of operation of such a valve 1, which is also known to the person skilled in the art as a regeneration valve or tank ventilation valve, is known from DE-OS 40 23 044, the disclosure of which is also intended to be part of the present patent application.
Das Ventil 1 besitzt ein Gehäuse 4, das vorzugsweise aus Kunststoff besteht und zum Beispiel in Kunststoffspritz- gußtechnik hergestellt ist. Das Ventil 1 dient zum Einleiten des vom Brennstoffverdunstungs-Rückhaltesystem zurückge¬ haltenen 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 and is manufactured, for example, using plastic injection molding technology. The valve 1 serves to introduce the fuel retained by the fuel evaporation retention system into the intake duct 2 of the intake module 3 of the internal combustion engine. The suction module 3, like the housing 4 of the valve 1, is preferably made of a plastic that can withstand the high strength and high temperatures of the internal combustion engine. A suitable plastic for this 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 zwischenge¬ speicherten Brennstoffs zu dem Ventil 1 erfolgt beispiels¬ weise über eine Zusatzleitung 13, die beispielsweise in Form einer Schlauchleitung ausgebildet ist und an einem an einem oberen Gehäuseteil 21 des Ventils 1 vorgesehenen Zuström- stutzen 22 angebracht ist. Aus einem dem Zuströmstutzen 22 gegenüberliegenden Abstrδmstutzen 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 l steuert in seinem Inneren einen Durchgangsquerschnitt zum Beispiel mittels einem mit einem Ventilsitz zusammen¬ wirkenden 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 formed cylindrically stepped and is composed of a first circumferential, cross-sectionally smaller outer surface 7 of a first section 8 and a second circumferential, cross-sectionally larger outer surface 6 of a second section 9. The valve 1 is in the corresponding to the outer surfaces 6, 7 of the Valve 1 with a stepped recess 10 in the intake module 3 is at least partially inserted into the recess 10, which is composed along a longitudinal axis 5 of a part 14 with a larger cross section with an inner surface 11 with a larger cross section and a part 15 with a smaller cross section with an inner surface 12 with a smaller cross section. A shoulder 16 is formed between the two parts 14, 15, which has an annular surface 17. Both parts 14, 15 run centrally to the longitudinal axis 5 and have a cylindrical cross section which is somewhat larger than the respective cylindrical cross section of the sections 8 and 9 of the valve 1, which is received in the parts 14, 15 and is delimited by the outer surfaces 6, 7, so that in the installed state of the valve 1 between the outer surfaces 6, 7 and the inner surfaces 11, 12 there are two radial gaps 48, 49. The inner surface 12 with a smaller cross section merges into a channel 18, which opens into the intake channel 2, through which the internal combustion engine can suck in air from the environment for the subsequent mixture formation. The fuel temporarily stored by the fuel evaporation retention system is supplied to valve 1, for example, via an additional line 13, which is designed, for example, in the form of a hose line and is attached to an inflow connector 22 provided on an upper housing part 21 of valve 1 . The fuel is preferably discharged downstream of a throttle valve 23 of the valve 1, which corresponds to the first section 8, opposite the inflow nozzle 22, downstream of a throttle valve rotatably accommodated in the intake duct 2 of the intake module 3 from the duct 18 into the intake duct 2. The valve 1 controls a passage cross section in its interior, for example by means of a closing body cooperating with a valve seat. In the passage cross section, for example, vaporous fuel and air flows as a medium via the additional line 13 into the valve 1 in order to Air mixture thereafter, for example, in a clocked manner from the outlet 23 in the channel 18.
Erfindungsgemäß sind an den Außenflächen 6 und 7 des Ventils 1 zwei Dichtringe, ein querschnittskleinerer ersterAccording to the invention are on the outer surfaces 6 and 7 of the valve 1, two sealing rings, a smaller cross-section first
Dichtring 25 und ein querschnittsgrößerer zweiter Dichtring 26 vorgesehen. Die Dichtringe 25, 26 dienen neben der Abdichtung des Ventils 1 in der Ausnehmung 10 erfindungs¬ gemäß 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.Sealing ring 25 and a cross-sectionally larger second sealing ring 26 are provided. In addition to sealing the valve 1 in the recess 10 according to the invention, the sealing rings 25, 26 also serve to mount and fasten the valve 1 in the recess 10. Both sealing rings 25, 26 are made of an elastic material, preferably rubber, for this purpose. The sealing rings 25, 26 are, for example, in the form of so-called O-rings which have a circular cross section. As shown in FIG. 1, the first sealing ring 25 is introduced into a first annular groove 30 in the first section 8 of the housing 4, which is recessed from the outer surface 7. In the same way, the second sealing ring 26 is introduced into a second annular groove 31 of the second section 9 of the housing 4, which is recessed from the second outer surface 6. Both sealing rings 25, 26 project radially beyond their respective outer surfaces 6, 7 and are elastically deformed when the valve 1 is inserted into the recess 10, guiding the valve 1 radially, but between the inner surfaces 11, 12 of the recess 10 and the outer surfaces 6, 7 of the valve 1, the 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 cross-sectionally larger inner surface 11 of the recess 10 is partially formed by a sleeve-shaped extension 36 projecting beyond an end surface 35 of the suction module 3. As shown in FIG. 2, a top view of FIG. 1, the sleeve-shaped extension 36 is composed of several ring snap elements 40. The ring-snap elements 40 forming a snap device for holding the valve 1 are circumferentially through in the direction the longitudinal axis 5 parallel recesses 41 are separated from each other, so that, for example, twelve tongue-like ring snap elements 40 are present, which are evenly distributed on the circumference of the extension 36. The individual ring snap elements 40 are bendable, for example made of plastic, and can accordingly bend away from the housing 4 of the valve 1 when the valve 1 is inserted. The sleeve-shaped extension 36 with the ring snap elements 40 is made, for example, like the suction module 3 from plastic and is also molded on during the manufacture of the suction module 3, for example 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 rinnenförmigeAs shown in FIG. 1, the sleeve-shaped extension 36 projecting beyond the end face 35 of the suction module 3 has a circumferential channel-shaped one
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 querschnitts¬ kleineren 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 rinnenfδrmigen 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 querschnitts- kleineren 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.Indentation 45 in the cross-sectionally larger inner surface 11, which extends along the individual ring snap elements 40 and is provided for receiving the cross-section-larger second sealing ring 26. When the valve 1 is inserted into the recess 10, it passes with the outflow connection 23 from the larger-sized part 14 into the smaller-sized part 15 of the recess 10, the smaller-sized first sealing ring 25 sliding along the inner surface 12 in the smaller-sized part 15 until the second Seals ring 26 snaps into the groove-shaped recess 45 of the then slightly bent ring snap elements 40. The axial distances between the second sealing ring 26 or the second annular groove 31 and the trough-shaped recess 45 in the inner surface 31 from the ring surface 17 are selected such that between the ring surface 17 and a valve ring surface remaining between the larger cross-sectional outer surface 6 and the smaller cross-sectional outer surface 7 19 there is an axial gap 47. The axial gap 47 and the radial gaps 48, 49 preclude contact of the valve 1 on surfaces 11, 12 and 17 in the recess 10.
Aufgrund der formschlüssigen Aufnahme des querschnitts- größeren 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 querschnitts- kleineren 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 denDue to the positive reception of the second sealing ring 26 with larger cross-section in the groove-shaped recess 45 and the annular groove 31, there is virtually a fixed bearing for the valve 1 in the recess 10. The first sealing ring 25 with a smaller cross section is only radially sealed to the inner surface 12 in the cross section - Smaller part 15 of the recess 10 and is therefore not hindered in its axial displaceability in the direction of the longitudinal axis 5, so that there is virtually a floating bearing for the valve 1 is formed. Due to the exclusive mounting 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
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.Inner surfaces 11, 12 can take place in the recess 10, an elastic mounting is created, which prevents vibrations emanating from the valve 1 from being transmitted to the intake module 3. This creates an acoustic decoupling of the valve 1 in the recess 10, which greatly reduces the transmission of the operating noise of the valve 1. In addition, the elastically deformed sealing rings 25, 26 ensure that the valve 1 is sufficiently mechanically held in the recess 10.
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 Kunststoff¬ spritzgußtechnik mitangespritzt werden.To dismantle the valve 1, a wedge having a U shape, for example, can be inserted into the gap 48 between the ring snap elements 40 and the outer surface 6. The wedge bends the ring snap elements 40 slightly when inserted into the gap 48, so that the snap connection between the second sealing ring 26 and the ring snap elements 40 is released and the valve 1 can be removed from the recess 10. As shown in FIG. 1, the ring snap elements 40 can be made in one piece on the suction module 3 Paragraph 36 are formed and molded in a simple manner during the manufacture of the intake module 3, for example in plastic injection molding technology.
Die Figur 3 zeigt ein zweites erfindungsgemäßes Ausführungs- beispiel, bei dem alle gleichen oder gleichwirkenden Teile mit denselben Bezugszeichen der Figuren 1 und 2 gekenn¬ zeichnet 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 Ansaug¬ module 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, in which all the same or equivalent parts are identified by the same reference numerals from FIGS. 1 and 2. In FIG. 3, the valve 1 is shown in perspective, which is introduced into a separate component designed as a built-in pot 50 for attachment or mounting. The mounting pot 50 has the ring snap elements 40 on its circumference over part of its axial extent and forms the recess 10 for the valve 1. The mounting pot 50, which is preferably made of plastic, has a circumferential ring edge 54 with the ring snap elements 40 and a pot base 55 and possibly a connecting piece 56 adjoining the pot base 55 and is provided, for example, for intake modules 3 made of metal for fastening the valve 1 to the intake module 3. For this purpose, the built-in pot 50 is, for example, introduced into a cylindrical recess 52 in the metal suction module 3, which is formed according to the outer shape of the built-in pot 50 and is indicated by dashed lines in FIG. 3, and is fastened therein, for example by means of adhesive. The valve 1 can then be inserted into the mounting pot 50 and held on the mounting pot 50 by means of the ring snap elements 40. It is of course also possible to insert the installation pot 50 into a cylindrical recess in an intake module 3 made of plastic, in order to fasten the valve 1 to the intake module 3.
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 Brennkraft¬ maschine, 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 is not limited to valves for the metered introduction of volatilized fuel. The unit can also be a Act injection valve of known type, as is known for example from US-PS 5,156,133 or from GB-PS 1 603 501. The invention can also be readily transferred to so-called exhaust gas recirculation valves, as are known, for example, from WO 95/27134. Likewise, the invention is also suitable for other valves, for example valves for idle control of the internal combustion engine, as are known, for example, from US Pat. No. 5,497,746. A transfer to so-called changeover or directional control valves is also possible in internal combustion engines equipped with an intake manifold supercharger, as are known, for example, from DE-OS 41 05 938.

Claims

Patentansprüche claims
1. Aggregat für eine Brennkraftmaschine, das ein Gehäuse mit einem ersten Abschnitt mit einer ersten umlaufenden Außenfläche und wenigstens einem zweiten Abschnitt mit wenigstens einer zweiten umlaufenden Außenfläche hat, wobei auf die erste Außenfläche ein erster Dichtring aufsetzbar ist und erster Abschnitt und erster Dichtring in eine Ausnehmung einer Einbauwandung einführbar sind, dadurch gekennzeichnet, daß ein zweiter Dichtring (26) auf die zweite Außenfläche (6) des zweiten Abschnittes (9) aufsetzbar ist und zweiter Abschnitt (9) und zweiter Dichtring (26) ebenfalls in die Ausnehmung (10) einführbar sind, so daß die Lagerung des Aggregats (1) in der Ausnehmung (10) mittels der beiden Dichtringe (25, 26) erfolgt, ohne daß dabei die ersten und zweiten Außenflächen (6, 7) des Aggregats (1) an Innenflächen (11, 12) der Ausnehmung (10) anliegen und daß die Einbauwandung (20) einen hülsenförmigen Ansatz (36) aufweist, in den sich die Ausnehmung (10) erstreckt und der zur Halterung des1. Unit for an internal combustion engine, which has a housing with a first section with a first circumferential outer surface and at least a second section with at least a second circumferential outer surface, wherein a first sealing ring can be placed on the first outer surface and the first section and first sealing ring in one A recess in an installation wall can be inserted, characterized in that 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 also be inserted into the recess (10). can be inserted, so that the assembly (1) is supported in the recess (10) by means of the two sealing rings (25, 26) without the first and second outer surfaces (6, 7) of the assembly (1) on the inner surfaces ( 11, 12) of the recess (10) and that the installation wall (20) has a sleeve-shaped extension (36) into which the recess (10) extends and to hold the
Aggregats (1) in mehrere biegbare Ring-Schnapp-Elemente (40) unterteilt ist, in die der zweite Dichtring (26) beim Einführen des Aggregats (1) in die Ausnehmung (10) einschnappbar ist.Unit (1) is divided into a plurality of bendable ring snap elements (40), into which the second sealing ring (26) can be snapped when the unit (1) is inserted into the recess (10).
2. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß der erste Dichtring (25) in eine an der ersten Außenfläche (7) des Aggregats (1) vorgesehene erste Ringnut (30) eingebracht 2. Unit according to claim 1, characterized in that the first sealing ring (25) in a on the first outer surface (7) of the unit (1) provided first annular groove (30)
3. Aggregat nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der zweite Dichtring (26) in eine an der zweiten Außenfläche (6) des Aggregats (1) vorgesehene zweite Ringnut3. Unit according to claim 1 or 2, characterized in that the second sealing ring (26) in a on the second outer surface (6) of the unit (1) provided second annular groove
(31) eingebracht ist.(31) is introduced.
4. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Dichtring (26) in eine in der Innenfläche (11) der Ring-Schnapp-Elemente (40) vorgesehene rinnenförmige Vertiefung (45) einschnappbar ist.4. Unit according to claim 1, characterized in that the second sealing ring (26) in a in the inner surface (11) of the ring snap elements (40) provided groove-shaped recess (45) can be snapped.
5. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß zwischen den Außenflächen (6, 7) des Aggregats (1) und den Innenflächen (11, 12) der Ausnehmung (10) ein Spalt (48, 49) ausgespart ist.5. Unit according to claim 1, characterized in that between the outer surfaces (6, 7) of the unit (1) and the inner surfaces (11, 12) of the recess (10), a gap (48, 49) is recessed.
6. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß die Einbauwandung (20) aus Kunststoff besteht.6. Unit according to claim 1, characterized in that the installation wall (20) consists of plastic.
7. Aggregat nach Anspruch 1 oder 6, dadurch gekennzeichnet, daß die Einbauwandung (20) Teil eines Ansaugmoduls (3) der7. Unit according to claim 1 or 6, characterized in that the mounting wall (20) part of an intake module (3)
Brennkraftmaschine ist.Internal combustion engine is.
8. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß die Einbauwandung (20) Teil eines Einbautopfes (50) ist, der an einem Ansaugmodul (3) oder einer Ansaugleitung der Brennkraftmaschine angeordnet ist.8. Unit according to claim 1, characterized in that the mounting wall (20) is part of a mounting pot (50) which is arranged on an intake module (3) or an intake line of the internal combustion engine.
9. Aggregat nach Anspruch 8, dadurch gekennzeichnet, daß der Einbautopf (50) aus Kunststoff besteht.9. Unit according to claim 8, characterized in that the mounting pot (50) consists of plastic.
10. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß das Aggregat (1) zur Steuerung eines Durchgangsquerschnittes in einer ein Medium zu einer Betriebsmittelleitung (2) der Brennkraftmaschine zuführenden Zusatzleitung (13) vorgesehen ist. 10. Unit according to claim 1, characterized in that the unit (1) for controlling a passage cross section in a medium to an operating medium line (2) of the internal combustion engine supplying additional line (13) is provided.
11. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß das Aggregat (1) als Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff ausgebildet ist.11. Unit according to claim 1, characterized in that the unit (1) is designed as a valve for the metered introduction of volatilized fuel.
12. Aggregat zum dosierten Einleiten von verflüchtigtem Brennstoff in eine Betriebsmittelleitung einer Brennkraft¬ maschine, das einen ersten Abschnitt mit einer ersten umlaufenden Außenfläche und wenigstens einen zweiten Abschnitt mit wenigstens einer zweiten umlaufenden Außen¬ fläche hat, wobei auf die erste Außenfläche ein erster Dichtring aufsetzbar ist und erster Abschnitt und erster Dichtring in eine Ausnehmung einer Einbauwandung einführbar sind, dadurch gekennzeichnet, daß ein zweiter Dichtring (26) auf die zweite Außenfläche (6) des zweiten Abschnittes (9) aufsetzbar ist und zweiter Abschnitt (9) und zweiter Dichtring (26) ebenfalls in die Ausnehmung (10) einführbar sind, so daß die Lagerung des Aggregats (1) in der Ausnehmung (10) mittels der beiden Dichtringe (25, 26) erfolgt, ohne daß dabei die ersten und zweiten Außenflächen (6, 7) des Aggregats (1) an Innenflächen (11, 12) der Ausnehmung (10) anliegen.12. Unit for the metered introduction of volatilized fuel into an operating line of an internal combustion engine, which has a first section with a first circumferential outer surface and at least a second section with at least a second circumferential outer surface, a first sealing ring being attachable to the first outer surface and the first section and the first sealing ring can be inserted into a recess in an installation wall, characterized in that 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 also be inserted into the recess (10) so that the assembly (1) is supported 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) bear against inner surfaces (11, 12) of the recess (10).
13. Aggregat nach Anspruch 12, dadurch gekennzeichnet, daß die Einbauwandung (20) einen hülsenförmigen Ansatz (36) aufweist, in den sich die Ausnehmung (10) erstreckt und der zur Halterung des Aggregats (1) in mehrere biegbare Ring- Schnapp-Elemente (40) unterteilt ist, in die der zweite Dichtring (26) beim Einführen des Aggregats (1) in die Ausnehmung (10) einschnappbar ist.13. Unit according to claim 12, characterized in that the mounting wall (20) has a sleeve-shaped extension (36) into which the recess (10) extends and which for holding the unit (1) in a plurality of bendable ring snap elements (40) is divided into which the second sealing ring (26) can be snapped when the unit (1) is inserted into the recess (10).
14. Aggregat nach Anspruch 12, dadurch gekennzeichnet, daß der erste Dichtring (25) in eine an der ersten Außenfläche (7) des Aggregats (1) vorgesehene erste Ringnut (30) eingebracht ist. 14. Unit according to claim 12, characterized in that the first sealing ring (25) in a on the first outer surface (7) of the unit (1) provided first annular groove (30) is introduced.
15. Aggregat nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß der zweite Dichtring (26) in eine an der zweiten Außenfläche (6) des Aggregats (1) vorgesehene zweite Ringnut (31) eingebracht ist.15. Unit according to one of claims 12 to 14, characterized in that the second sealing ring (26) in a on the second outer surface (6) of the unit (1) provided second annular groove (31) is introduced.
16. Aggregat nach Anspruch 12, dadurch gekennzeichnet, daß der zweite Dichtring (26) in eine in der Innenfläche (11) der Ring-Schnapp-Elemente (40) vorgesehene rinnenförmige Vertiefung (45) einschnappbar ist.16. Unit according to claim 12, characterized in that the second sealing ring (26) in a in the inner surface (11) of the ring snap elements (40) provided groove-shaped recess (45) can be snapped.
17. Aggregat nach Anspruch 12, dadurch gekennzeichnet, daß zwischen den Außenflächen (6, 7) des Aggregats (1) und den Innenflächen (11, 12) der Ausnehmung (10) ein Spalt (48, 49) ausgespart ist.17. Unit according to claim 12, characterized in that between the outer surfaces (6, 7) of the unit (1) and the inner surfaces (11, 12) of the recess (10), a gap (48, 49) is recessed.
18. Aggregat nach Anspruch 12, dadurch gekennzeichnet, daß die Einbauwandung (20) aus Kunststoff besteht.18. Unit according to claim 12, characterized in that the installation wall (20) consists of plastic.
19. Aggregat nach Anspruch 12 oder 18, dadurch gekenn¬ zeichnet, daß die Einbauwandung (20) Teil eines Ansaugmoduls (3) der Brennkraftmaschine ist.19. Unit according to claim 12 or 18, characterized gekenn¬ characterized in that the mounting wall (20) is part of an intake module (3) of the internal combustion engine.
20. Aggregat nach Anspruch 12, dadurch gekennzeichnet, daß die Einbauwandung (20) Teil eines Einbautopfes (50) ist, der an einem Ansaugmodul (3) oder einer Ansaugleitung der Brennkraftmaschine angeordnet ist.20. Unit according to claim 12, characterized in that the mounting wall (20) is part of a mounting pot (50) which is arranged on an intake module (3) or an intake line of the internal combustion engine.
21. Aggregat nach Anspruch 20, dadurch gekennzeichnet, daß der Einbautopf (50) aus Kunststoff besteht.21. Unit according to claim 20, characterized in that the mounting pot (50) consists of plastic.
22. Schnappvorrichtung zur Halterung eines Aggregats für eine Brennkraftmaschine, das ein Gehäuse mit einem ersten Abschnitt mit einer ersten umlaufenden Außenfläche und wenigstens einem zweiten Abschnitt mit wenigstens einer zweiten umlaufenden Außenfläche hat, wobei auf die erste Außenfläche ein erster Dichtring aufsetzbar ist und erster Abschnitt und erster Dichtring in eine Ausnehmung einer Schnappvorrichtung einführbar sind, dadurch gekennzeichnet, daß ein zweiter Dichtring (26) auf die zweite Außenfläche (6) des zweiten Abschnittes (9) aufsetzbar ist und zweiter Abschnitt (9) und zweiter Dichtring (26) ebenfalls in die Ausnehmung (10) einführbar sind, so daß die Lagerung des Aggregats (1) in der Ausnehmung (10) mittels der beiden Dichtringe (25, 26) erfolgt, ohne daß dabei die ersten und zweiten Außenflächen (6, 7) des Aggregats (1) an Innen¬ flächen (11, 12) der Ausnehmung (10) anliegen und daß die Schnappvorrichtung einen hülsenförmigen Ansatz (36) aufweist, in den sich die Ausnehmung (10) erstreckt und der zur Halterung des Aggregats (1) in mehrere biegbare Ring- Schnapp-Elemente (40) unterteilt ist, in die der zweite Dichtring (26) beim Einführen des Aggregats (1) in die Ausnehmung (10) einschnappbar ist.22. Snap device for holding an assembly for an internal combustion engine, which has a housing with a first section with a first circumferential outer surface and at least one second section with at least one has a second circumferential outer surface, a first sealing ring being attachable to the first outer surface and the first section and first sealing ring being insertable into a recess of a snap device, characterized in that a second sealing ring (26) on the second outer surface (6) of the second section ( 9) can be placed and the second section (9) and second sealing ring (26) can also be inserted into the recess (10), so that the mounting of the unit (1) in the recess (10) by means of the two sealing rings (25, 26) takes place without the first and second outer surfaces (6, 7) of the unit (1) resting on inner surfaces (11, 12) of the recess (10) and without the snap device having a sleeve-shaped extension (36) into which the recess (10) extends and which is divided into several flexible ring snap elements (40) for holding the unit (1), into which the second sealing ring (26) when the unit (1) is inserted into the recess ung (10) can be snapped.
23. Schnappvorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß das Aggregat (1) zur Steuerung eines Durchgangsquerschnittes in einer ein Medium zu einer Betriebsmittelleitung (2) der Brennkraftmaschine zuführenden Zusatzleitung (13) vorgesehen ist.23. Snap device according to claim 22, characterized in that the unit (1) for controlling a passage cross section in a medium to an operating medium line (2) of the internal combustion engine supplying additional line (13) is provided.
24. Schnappvorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß der zweite Dichtring (26) in eine in der Innenfläche (11) der Ring-Schnapp-Elemente (40) vorgesehene rinnenförmige Vertiefung (45) einschnappbar ist.24. Snap device according to claim 22, characterized in that the second sealing ring (26) in a in the inner surface (11) of the ring snap elements (40) provided groove-shaped recess (45) can be snapped.
25. SchnappVorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß zwischen den Außenflächen (6, 7) des Aggregats (1) und den Innenflächen (11, 12) der Ausnehmung25. Snap device according to claim 22, characterized in that between the outer surfaces (6, 7) of the unit (1) and the inner surfaces (11, 12) of the recess
(10) ein Spalt (48, 49) ausgespart ist. (10) a gap (48, 49) is cut out.
26. Schnappvorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß die Schnappvorrichtung aus Kunststoff besteht .26. Snap device according to claim 22, characterized in that the snap device consists of plastic.
27. Schnappvorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß die Schnappvorrichtung Teil eines Ansaugmoduls (3) der Brennkraftmaschine ist.27. Snap device according to claim 22, characterized in that the snap device is part of an intake module (3) of the internal combustion engine.
28. Schnappvorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß die Schnappvorrichtung Teil eines28. Snap device according to claim 22, characterized in that the snap device is part of a
Einbautopfes (50) ist, der an einem Ansaugmodul (3) oder einer Ansaugleitung der Brennkraftmaschine angeordnet ist.Installation pot (50), which is arranged on an intake module (3) or an intake line of the internal combustion engine.
29. Schnappvorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß der Einbautopf (50) aus Kunststoff besteht . 29. Snap device according to claim 22, characterized in that the built-in pot (50) consists of plastic.
EP96945738A 1996-05-25 1996-11-20 Unit with a snap-action fastening device Expired - Lifetime EP0840846B1 (en)

Applications Claiming Priority (3)

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

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

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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
KR19990035791A (en) 1999-05-25
JPH11511228A (en) 1999-09-28
EP0840846B1 (en) 2002-02-20
US5967121A (en) 1999-10-19
DE19621221A1 (en) 1997-11-27
WO1997045635A1 (en) 1997-12-04
BR9609582A (en) 1999-02-23
DE59608766D1 (en) 2002-03-28

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