EP1498596B1 - Joint d'étanchéité à fente étrangleur pour soupapes - Google Patents

Joint d'étanchéité à fente étrangleur pour soupapes Download PDF

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Publication number
EP1498596B1
EP1498596B1 EP20040016087 EP04016087A EP1498596B1 EP 1498596 B1 EP1498596 B1 EP 1498596B1 EP 20040016087 EP20040016087 EP 20040016087 EP 04016087 A EP04016087 A EP 04016087A EP 1498596 B1 EP1498596 B1 EP 1498596B1
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EP
European Patent Office
Prior art keywords
insert
throttle
control element
valve
casing
Prior art date
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Active
Application number
EP20040016087
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German (de)
English (en)
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EP1498596A3 (fr
EP1498596A2 (fr
Inventor
Arno Hofmann
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Publication of EP1498596A2 publication Critical patent/EP1498596A2/fr
Publication of EP1498596A3 publication Critical patent/EP1498596A3/fr
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Publication of EP1498596B1 publication Critical patent/EP1498596B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps

Definitions

  • the invention relates to a throttle gap seal according to the preamble of claim 1 for valves which control the flow of gaseous media in internal combustion engines cyclically (i.e., per cycle) and exhibit very low leak rates when closed.
  • a throttle gap seal according to the preamble of claim 1 is known from JP 10 103089 A.
  • the housing is provided there with a lateral recess into which the insert can be inserted sealingly.
  • the insert and the housing are connectable, so that the insert is firmly connected in its inserted into the housing position with this.
  • the actuator of the valve is designed as a throttle valve, which is held rigidly in a bearing shaft for the throttle valve.
  • the bearing shaft itself is not adjustable mounted in the insert.
  • the invention proposes a throttle gap seal according to the features of claim 1.
  • the throttle gap seal according to the invention thus has an insert, which is received in the housing. This is sealed to the housing with at least one seal.
  • the insert comprises the flow cross-section of the housing and can be aligned, preferably in the closed state of the valve, with the actuator of the valve facing sealing surface to the position of the actuator with the insert facing the sealing surface at least once in the housing.
  • the sealing surface of the insert and the sealing surface of the actuator face each other in the closed position of the valve without continuous force. Insertion and actuator are thus free of forces.
  • the actuator assumes its rest-closed position without a stop against the insert and housing.
  • the actuator assumes its rest-closed position without a stop against the insert and housing.
  • the sealing surface of the actuator with changing the flow cross-section of the valve with respect to the sealing surface of the insert executes any trajectory, wherein the trajectory of the sealing surface of the actuator to the rest-closing position of the actuator a tangential direction relative to the Includes sealing surface of the insert.
  • This trajectory may, for example, be oscillating and / or rotating, linear, circular, elliptical, parabolic, etc. It performs during the movement process of the actuator of the center of gravity of the actuator relative to the center of mass of the insert any curved path, for example, a rotary motion, a linear displacement, a combination of both forms of motion or no movement.
  • the seal preferably takes on additional functions in addition to the medium seal, such as the thermal insulation between housing and insert and / or the attachment of the insert in the housing.
  • This case of thermal insulation relates in particular to the static aspect.
  • the thermal insulation between housing and insert ensures, in particular in the event that the valve is arranged in the region of a cylinder head, that the heating of the housing does not transfer to the insert, and thus causes a high temperature difference between the actuator and insert.
  • the actuator and the insert have a similar ratio of medium-flushed component surfaces / heat capacity of the component in order to achieve a similar time behavior with respect to the thermal expansion of the components.
  • This training of actuator and insert considers in particular effects due to strong intake air heating in turbocharged engines.
  • the actuator consists of one or more individual components, which are made in part of one or more low-density materials, such as light metal, metal foam, plastic foam, fiber-reinforced plastic.
  • a preferred embodiment of the invention provides that the throttle sealing gap between actuator and insert is adjustable by positioning the insert in the plane or additionally perpendicular to the plane. This positioning can be done by mechanical (for example distance gauge), optical (for example light gap measurement) or hydraulic (for example gap flow) calibration of the throttle sealing gap.
  • the calibration of the throttle sealing gap can also be done by self-centering of the insert on the actuator. This is preferably done by applying the sealing surface of the valve to the sealing surface of the insert, wherein one of these surfaces is provided with a thick coating, which the throttle gap in the assembled state at least partially closes and which wears off in the subsequent operation of the valve on the opposite, wear-resistant sealing surface.
  • the throttle sealing gap by automatically returning the orientation of the insert on the actuator in the rest-closed position. This is achieved, for example, by a decreasing throttle gap height in the direction of the rest-closed position.
  • the insert is movable, but medium-tight seals on the housing from and the sealing surfaces of insert and actuator are provided with a wear-resistant surface coating.
  • valve 16 has a housing 1 for guiding the gaseous medium in the valve 16.
  • a housing 1 for guiding the gaseous medium in the valve 16.
  • the housing 1 is a movable drivable, pivotable about the axis of rotation 24 actuator 4 for changing the corresponding flow cross-section 11 provided in the valve.
  • an insert 2 is added. This is sealed to the housing 1 with a seal 3.
  • the insert part 2 comprises the flow cross-section 11 of the housing 1.
  • the actuator 4 is shown in its closed position.
  • the insert 2 can be in the closed state 6 of the valve in its the actuator 4 facing sealing surface 10, as illustrated in particular in Figure 2, at least once in the housing align and form the position of the actuator 4 with the insert 2 facing sealing surface a throttle gap 12.
  • the sealing surface 10 of the insert 2 and the sealing surface 8 of the actuator 4 are, without continuous force on each other, in the closed position 6 of the valve opposite.
  • the actuator 4 assumes its closed position 6 without a stop against the insert 2 and housing 1.
  • the sealing surface 8 of the actuator 4 performs with a change of the flow cross section 11 of the valve with respect to the sealing surface 10 from a circular path of movement 9.
  • the movement path of the sealing surface 8 to the rest-closing position 6 of the actuator 4 includes a tangential direction 7 relative to the sealing surface 10th
  • the longitudinal center axis of the housing 1 is denoted by the reference numeral 14, the plane arranged perpendicular to the throttle sealing gap 12 by the reference numeral 15.
  • the actuator 4 In the rest position, the actuator 4 is symmetrical to the plane 15.
  • the reference numeral 5, the open, thus pivoted by 90 ° position of the actuator 4 is designated.
  • the reference numeral 13 illustrates a position of the actuator 4 when the flow cross-section 11 is released or closed.
  • the throttle sealing gap 12 is present during the closing operation of the valve even before reaching the rest-closing position 6 of the actuator 4 from this position 13, whereby the actuator when closing the flow cross-section 11, a movement speed greater zero is imposed.
  • the throttle sealing gap 12 is maintained during the opening operation of the valve for a portion of the onset of movement of the actuator 4 from its rest-closed position 6 out to its position 13, whereby the actuator 4 at the beginning of release of the flow cross section 11, a movement speed greater than zero is imposed.
  • the actuator 4 and the insert 2 consists of a material with a similar coefficient of thermal expansion.
  • the seal 3 assumes, in addition to the medium seal, additional functions, in particular the thermal insulation between the housing 1 and insert 2 and / or the attachment of the insert 2 in the housing 1.
  • the actuator 4 and the insert 2 have a similar coefficient of medium lapped component surfaces / Heat capacity of the component to achieve a similar time behavior with respect to the thermal expansion of the components.
  • the actuator 4 is the component surfaces 22 and 23 and the component surface formed by the sealing surface 8 of the actuator 4, and the insert 2 to the component surfaces 17 and 18 and the sealing surface 10 of the insert 2, which forms a further component surface.
  • the actuator 4 has in the exemplary embodiment a circular disk-shaped outer contour, which closes at least the flow cross-section 11 in the closed position of the valve 6 to the throttle gap 12.
  • the actuator 4 may consist of one or more individual components, which are made in part of one or more low-density materials, such as light metal, metal foam, plastic foam, fiber-reinforced plastic.
  • the insert 2 may consist of several individual components.
  • FIGS. 5 to 7 illustrate the special design of the throttle gap seal with reference to three basic embodiments in order to achieve the self-centering of the insert 2 on the actuator 4:
  • the self-centering of the insert 2 on the actuator 4 by applying the sealing surface 8 of the actuator 4 takes place on the sealing surface 10 of the insert part 2, wherein the sealing surface 8 of the actuator 4 is provided with a coating 19. This closes or reduces the throttle gap at least in the assembled state and wears off at least partially in later operation on the opposite, wear-resistant sealing surface 10.
  • FIG. 6 differs from that of Figure 5 only in that instead of the coating 19 of the actuator 4, a coating 20 of the insert 2 is provided which closes or reduces the throttle gap at least in the assembled state and in later operation the valve at the opposite, wear-resistant sealing surface 8 of the actuator 4 at least partially ablates.
  • Figure 7 illustrates an embodiment in which the throttle sealing gap 12 results by automatically recurring the alignment of the insert 2 on the actuator 4 in the rest-closed position 6. This is achieved, for example, by a decreasing throttle gap height 21 in the direction of the rest-closed position 6.
  • the insert 2 closes movable, but medium-tight over two seals 3 to the housing 1 and it are the sealing surfaces 8 and 10 provided with a wear-resistant surface coating.
  • the insert 2 is elastically fixed in the housing 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (13)

  1. Boîte à labyrinthe du type à étranglement pour minimiser les fuites de soupapes à commande cyclique réglant le débit de milieux gazeux d'un moteur à combustion, comprenant au moins un composant de réglage (4) qui peut être entraîné en mobilité pour modifier la section d'écoulement correspondante (11) dans la soupape, au moins une bague de compression (2) et au moins un boîtier (1) reprenant à son compte le guidage du milieu gazeux dans la soupape (1), dans laquelle la bague de compression (2) vient se loger dans le boîtier (1), la bague de compression (2) est rendue étanche par rapport au boîtier (1) à l'aide d'au moins un joint d'étanchéité (3), la bague de compression (2) comprend la section d'écoulement (11) du boîtier (1), caractérisée en ce que la bague de compression (2), disposée à l'intérieur du boîtier (1), à l'état fermé (6) de la soupape, forme avec sa surface d'étanchéité (10) tournée vers le composant de réglage (4) une fente d'étanchéité par étranglement (12) qui peut être réglée quant à sa hauteur et quant à sa position en fonction de la position de la surface d'étanchéité (8) du composant de réglage (4).
  2. Boîte à labyrinthe du type à étranglement selon la revendication 1, caractérisée en ce que la bague de compression (2), à l'état fermé (6) de la soupape peut être mise en alignement, au moins une fois dans le boîtier, avec sa surface d'étanchéité (10) tournée vers le composant de réglage (4) en fonction de la position du composant de réglage
  3. Boîte à labyrinthe du type à étranglement selon la revendication 1 ou 2, caractérisée en ce que la surface d'étanchéité (8) du composant de réglage (4), lors de la modification de la section d'écoulement (11) de la soupape par rapport à la surface d'étanchéité (10) de la bague de compression (2), met en oeuvre n'importe quelle étendue de mouvement (9), l'étendue de mouvement de la surface d'étanchéité (8) du composant de réglage (4) autour de la position de repos-fermeture (6), conserve une direction tangentielle (7) par rapport à la surface d'étanchéité (10) de la bague de compression (2).
  4. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le joint d'étanchéité (3) reprend à son compte, à côté de l'étanchéisation du milieu, des fonctions supplémentaires, en particulier l'isolation thermique entre le boîtier (1) et la bague de compression (2) et/ou la fixation de la bague de compression (2) dans le boîtier (1).
  5. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la fente d'étanchéité par étranglement (12), au cours du processus d'ouverture de la soupape, conserve un tronçon partiel du mouvement du composant de réglage (4) qui est mis en oeuvre à partir de la position de repos-fermeture (6) de ce dernier jusqu'à une position (13) dans laquelle la section d'écoulement (11) est libérée, si bien qu'une vitesse de mouvement supérieure à zéro est appliquée au composant de réglage (4) lors de la libération naissante de la section d'écoulement (11).
  6. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le composant de réglage (4) possède un contour externe quelconque en trois dimensions, qui ferme au moins la section d'écoulement (11) dans la position fermée de la soupape (6) à l'exception de la fente d'étranglement (12).
  7. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la bague de compression (2) est constituée par plusieurs éléments individuels.
  8. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le positionnement de la bague de compression (2) et du composant de réglage (4) pour former la fente d'étanchéité par étranglement (12) a lieu par autocentrage réciproque de deux éléments constitutifs.
  9. Boîte à labyrinthe du type à étranglement selon la revendication 8, caractérisée en ce que, à des fins d'autocentrage de la bague de compression (2) par rapport au composant de réglage (4), une des surfaces d'étanchéité (8, respectivement 10) est munie d'un rembourrage (19, respectivement 20), en particulier d'un rembourrage relativement épais, qui diminue la hauteur de la fente d'étanchéité par étranglement (12) ou bien qui ferme ladite fente, au moins lors du montage, et qui s'érode, lors d'une mise en service ultérieure de la soupape pour correspondre, au moins en partie, à la surface d'étanchéité opposée résistant à l'usure (10, respectivement 8).
  10. Boîte à labyrinthe du type à étranglement selon la revendication 9, caractérisée en ce que, l'application du rembourrage (19) apte à s'éroder sur la surface (8) du composant de réglage (4) a lieu en présence de la bague de compression (2) entre les surfaces (8, 10) du composant de réglage (8) et de la bague de compression (2).
  11. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 10, caractérisée en ce que la fente d'étanchéité par étranglement (12) prend la position de repos-fermeture (6) via la mise en alignement automatique périodique de la bague de compression (2) avec le composant de réglage (4).
  12. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 11, caractérisée en ce que la bague de compression fournit une étanchéité mobile, mais étanche au milieu, via des joints d'étanchéité (3) par rapport au boîtier (1), les surfaces d'étanchéité (8, 10) du composant de réglage (4) et de la bague de compression (2) étant munies d'un revêtement superficiel résistant à l'usure.
  13. Boîte à labyrinthe du type à étranglement selon l'une quelconque des revendications 1 à 12, caractérisée en ce que le guidage, respectivement le positionnement du composant de réglage (4) sont hébergés dans le boîtier (1) et/ou dans la bague de compression (2) et/ou dans d'autres éléments de la soupape.
EP20040016087 2003-07-17 2004-07-08 Joint d'étanchéité à fente étrangleur pour soupapes Active EP1498596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10332766 2003-07-17
DE10332766 2003-07-17

Publications (3)

Publication Number Publication Date
EP1498596A2 EP1498596A2 (fr) 2005-01-19
EP1498596A3 EP1498596A3 (fr) 2005-06-08
EP1498596B1 true EP1498596B1 (fr) 2006-10-18

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ID=33461995

Family Applications (1)

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EP20040016087 Active EP1498596B1 (fr) 2003-07-17 2004-07-08 Joint d'étanchéité à fente étrangleur pour soupapes

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EP (1) EP1498596B1 (fr)
DE (1) DE502004001773D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025177A1 (de) 2007-05-29 2008-12-04 Mahle International Gmbh Schaltventil

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009155A1 (de) 2006-02-24 2007-08-30 Mahle International Gmbh Schaltventil und zugehöriges Herstellungsverfahren
EP2017510B1 (fr) * 2007-06-12 2011-03-23 Arno Hofmann Vanne à papillon pour gaz
DE102012009878B3 (de) * 2012-05-18 2013-06-13 Gerhard Kirstein Verbrennungsmotor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10103089A (ja) * 1996-09-25 1998-04-21 Aisan Ind Co Ltd 吸気装置
JP2002295273A (ja) * 2001-01-29 2002-10-09 Denso Corp インサート成形体およびそれにより形成されたスロットルボディ
DE10138931A1 (de) * 2001-08-08 2003-03-06 Bosch Gmbh Robert Drosselvorrichtungsgehäuse mit flexiblen Ausgleichselementen für Brennkraftmaschinen
JP2003184583A (ja) * 2001-12-20 2003-07-03 Aisan Ind Co Ltd 絞り弁装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025177A1 (de) 2007-05-29 2008-12-04 Mahle International Gmbh Schaltventil

Also Published As

Publication number Publication date
DE502004001773D1 (de) 2006-11-30
EP1498596A3 (fr) 2005-06-08
EP1498596A2 (fr) 2005-01-19

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