EP1063391B1 - Commande de soupape pour un moteur à combustion interne - Google Patents

Commande de soupape pour un moteur à combustion interne Download PDF

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Publication number
EP1063391B1
EP1063391B1 EP00112962A EP00112962A EP1063391B1 EP 1063391 B1 EP1063391 B1 EP 1063391B1 EP 00112962 A EP00112962 A EP 00112962A EP 00112962 A EP00112962 A EP 00112962A EP 1063391 B1 EP1063391 B1 EP 1063391B1
Authority
EP
European Patent Office
Prior art keywords
valve
drive according
valve drive
collar
cylinder head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00112962A
Other languages
German (de)
English (en)
Other versions
EP1063391A2 (fr
EP1063391A3 (fr
Inventor
Walter Strzoda
Klaus Dr. Gebauer
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.)
TRW Deutschland GmbH
Original Assignee
TRW Deutschland 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 TRW Deutschland GmbH filed Critical TRW Deutschland GmbH
Publication of EP1063391A2 publication Critical patent/EP1063391A2/fr
Publication of EP1063391A3 publication Critical patent/EP1063391A3/fr
Application granted granted Critical
Publication of EP1063391B1 publication Critical patent/EP1063391B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/32—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/10—Connecting springs to valve members

Definitions

  • the invention relates to a valve train for controlling the gas exchange in Internal combustion engines with the valve always in its required position holding valve spring between the valve spring plate and one towards the Valve axis adjustable valve spring bearing is clamped, the adjustable Valve spring bearing made of two interlocking and rotatable in opposite directions Collars exist.
  • valve clearance between the tappet foot and the camshaft can be changed and thus adjusted by screwing.
  • a ring gear-like locking device is provided, in which the ram foot engages with external teeth.
  • the valve clearance can also be set via the armature of an electromagnetic drive. In this valve lash adjuster, too, the distance between the actuating element and the valve stem is changed via a locking screw that oscillates with the armature.
  • DE 4 129 637 A shows a generic valve train.
  • This valve train has two mutually rotatable adjusting rings, the on one adjusting ring Valve spring is supported. Both collars are connected by balls, so that by rotating them on these balls their rotational position to each other can change.
  • the invention has for its object to provide a valve train of the type mentioned with which the setting of a defined spring preload can be carried out for each individual valve. Furthermore, a suitable connection between the parts that enable the setting of a defined spring preload and the valve stem seal should simplify securing individual parts against loss and assembly and disassembly at the customer.
  • the invention solves the problem by means of a valve train with the characterizing features of patent claim 1. Advantageous refinements are the subject of the subclaims and are explained below.
  • the solution according to the invention enables the setting of Valve spring preload to a defined value, e.g. B. also with one camshaftless valve train. Due to the finely graded, self-locking, manual Adjustability, independently z. B. of spring forces, a tolerance addition and mechanical influences, the defined spring preload of each Adjust valve separately. Especially with a camshaft-less valve train this reduces energy consumption to a minimum. in the camshaft-less, e.g. B. electromechanical valve train, can Spring preloads of all valves are set to the same level. different Tolerances can be eliminated. Hence the energy requirement for all valves are the same and low according to the theoretically required force. If such a setting were not used, the energy consumption would have to be higher can be used to overcome high forces of strong springs.
  • a defined value e.g. B. also with one camshaftless valve train. Due to the finely graded, self-locking, manual Adjustability, independently z. B. of spring forces,
  • the adjustable valve spring bearing 1 consists of two interlocking adjusting rings 2 and 3.
  • the inner collar 2 has a radially inwardly extending Support surface 4 for supporting the valve spring 12.
  • the inner collar is in his Provide an upper collar 5 in the upper area. This points over his Set pressure surfaces 6a to 6c distributed around the circumference. However, it can also more than three signal pressure areas distributed over the circumference Find.
  • the outer circumference of the federal government 5 shows several, distributed over its circumference arranged flats 7 for the attachment of a setting tool to the inner Turn the collar 2 against the outer one to adjust the spring.
  • the outer ring 3 is provided on its side facing the actuating pressure surfaces 6a to 6c of the inner adjusting ring 2 with congruent actuating pressure surfaces 8a to 8c which are operatively connected to the actuating pressure surfaces 6a to 6c. All signal pressure areas are profiled to create a positive connection between the areas involved.
  • the example shows a directional toothing with flat tooth flanks of different lengths and included flank or wedge angles of 112 °, as the details of FIGS. 8 and 11 show.
  • the inner collar 2 in Direction of the bow arrow 11 rotated so that the locking teeth 9 with their long Flanks 9a can slide on the long flanks 10a of the locking teeth 10 until they are with their steeper short flanks 9b behind the corresponding short flanks 10b Grasp locking teeth 10 of the outer collar. Because the teeth on thread-like increasing signal pressure surfaces are arranged, the bearing surface 4 raised and the valve spring increasingly compressed until the spring force has reached a predetermined value. In this way, every single valve spring of an engine can be set to the same value.
  • FIGS. 12 to 15 show a further embodiment of the invention, wherein same parts are provided with the same reference numbers.
  • the outer adjusting ring 103 resting on the cylinder head (not shown) is provided with a collar-shaped extension 117 which engages through the central bore 118 of the inner adjusting ring 102.
  • depressions 120 are provided for receiving correspondingly shaped thickenings of the cylinder head surface.
  • the outline of the inner adjusting ring shows a hexagon for attaching an adjusting tool.
  • FIG. 15 shows the assembly example of a valve 20, the stem 21 of which is conventional Is guided in a valve guide 22 seated in the cylinder head 23.
  • the valve is at its upper end by multi-groove valve cone pieces 24, which with their Raising beads in the recess 25 of the valve stem end with the not shown Spring plate connected.
  • the valve stem 21 is provided with a valve stem seal 26.
  • the outer The end of the valve stem seal is sealed against by a hose spring 27 the valve stem surface pressed.
  • the inner end of the valve stem seal is with a metal bushing 28 vulcanized together. This sits in under slight pressure the central bore 121 of the outer collar 103.
  • the press fit ensures a captive connection between the valve stem seal and the outer Collar 103 after pre-assembly.
  • the gearing between the a locking compound for example an adhesive, is introduced into both adjusting rings that hardens under pressure and ensures a captive connection.
  • the edge of the collar-shaped extension 117 can be slightly deformed, For example, be flanged so that the collars 102 and 103 and the Collar with press fit valve stem seal 26 an captive unit form. It is after inserting the valve in the cylinder head over the Valve stem end pushed and positioned on the cylinder head. In addition to the Incorrect assembly cannot be lost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (19)

  1. Commande de soupape pour commander le changement de gaz dans des moteurs à combustion interne, comprenant un ressort de soupape (12) qui maintient la soupape en permanence dans la position requise et qui est serré entre une cuvette de ressort de soupape et un palier de ressort de soupape (1) réglable dans le sens de l'axe de soupape, ce palier réglable se composant de deux bagues de réglage (2, 3 ; 102, 103) qui s'emboítent l'une dans l'autre et qui sont aptes à tourner en sens inverse,
       caractérisée en ce que la bague de réglage (2, 102) présente une surface (4, 104) pour l'appui du ressort de soupape (12) et est apte à être déplacée en tournant par rapport à la bague de réglage extérieure (3, 103) dans le sens de l'axe de soupape,
       en ce que les bagues de réglage comportent des éléments (9, 10) pour empêcher une rotation inverse,
       et en ce que les bagues de réglage présentent des surfaces de pression de réglage (6a, 6b, 6c ; 8a, 8b, 8c) qui glissent les unes sur les autres et qui montent en forme de filetage.
  2. Commande de soupape selon la revendication 1, caractérisée en ce que les surfaces de pression de réglage sont pourvues de profilages (9, 10) autobloquants et s'emboítant par complémentarité de forme, pour empêcher des mouvements de rappel.
  3. Commande de soupape selon la revendication 2, caractérisée en ce que les surfaces de pression de réglage sont pourvues de crans.
  4. Commande de soupape selon la revendication 3, caractérisée en ce que les surfaces de pression de réglage sont dotées d'une denture d'arrêt (9, 10) à action directionnelle.
  5. Commande de soupape selon l'une des revendications 1 à 4, caractérisée en ce que la bague de réglage intérieure (2, 102) est portée avec ses surfaces de pression de réglage (6a-6c) par la bague extérieure (3), laquelle est posée sur la tête de cylindre.
  6. Commande de soupape selon la revendication 5, caractérisée en ce que la bague de soupape (3, 103) extérieure ou posée directement sur la tête de cylindre (23) est bloquée à l'encontre d'une rotation grâce à une complémentarité de forme avec la tête de cylindre.
  7. Commande de soupape selon la revendication 6, caractérisée en ce que la bague extérieure est posée avec un contour extérieur non circulaire dans un creux de forme correspondante de la tête de cylindre.
  8. Commande de soupape selon la revendication 6, caractérisée en ce que la bague de réglage extérieure est pourvue, sur sa surface d'appui, de creux (120) destinés à recevoir des bosses de la tête de cylindre.
  9. Commande de soupape selon l'une des revendications 1 à 7, caractérisée en ce que le contour extérieur de la bague extérieure se compose de deux cercles primitifs identiques (13, 14) dont les centres de construction sont espacés l'un de l'autre et dont les extrémités sont reliées par des droites (15, 16).
  10. Commande de soupape selon l'une des revendications 1 à 8, caractérisée en ce que les bagues de réglage sont dotées chacune d'au moins trois surfaces de pression de réglage (6a-6c ; 8a-8c) qui sont appliquées les unes sur les autres par paires.
  11. Commande de soupape selon l'une des revendications 1 à 9, caractérisée en ce que le contour extérieur de la bague intérieure est pourvu de surfaces d'application (7) pour un outil de réglage.
  12. Commande de soupape selon la revendication 11 caractérisée en ce que la bague intérieure (102) a une forme polygonale.
  13. Commande de soupape selon la revendication 12, caractérisée en ce que le contour extérieur de la bague intérieure forme un hexagone.
  14. Commande de soupape selon l'une des revendications 1 à 13, caractérisée en ce que la tige de soupape (21) est pourvue d'un joint d'étanchéité (26) qui est relié par force au palier de ressort de soupape.
  15. Commande de soupape selon la revendication 14, caractérisée en ce que la matière élastomère qui rend la tige de soupape étanche est vulcanisée avec une douille métallique (28) qui l'entoure, et la douille est disposée avec un ajustage serré dans un élément rapporté en forme de collerette (117) de l'une des bagues de réglage.
  16. Commande de soupape selon l'une des revendications 1 à 15, caractérisée en ce que les bagues de réglage sont déformées, après l'assemblage, de telle sorte qu'elles ne puissent pas se détacher, mais qu'un réglage de la force de ressort soit possible sans restriction.
  17. Commande de soupape selon les revendications 15 et 16, caractérisée en ce que la bague (103) extérieure ou placée directement sur la tête de cylindre (23) passe avec sa collerette (117) à travers la bague de réglage intérieure (102), en position prémontée, le bord de la collerette étant pourvu d'au moins une déformation de matière.
  18. Commande de soupape selon l'une des revendications 4 à 17, caractérisée en ce qu'une masse de blocage est prévue entre les éléments dentés, en vue d'une liaison par force des surfaces métalliques.
  19. Commande de soupape selon la revendication 18, caractérisée en ce qu'on prévoit comme masse de blocage une colle qui prend par pression.
EP00112962A 1999-06-21 2000-06-20 Commande de soupape pour un moteur à combustion interne Expired - Lifetime EP1063391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928284A DE19928284A1 (de) 1999-06-21 1999-06-21 Ventiltrieb für Verbrennungskraftmaschine
DE19928284 1999-06-21

Publications (3)

Publication Number Publication Date
EP1063391A2 EP1063391A2 (fr) 2000-12-27
EP1063391A3 EP1063391A3 (fr) 2001-05-02
EP1063391B1 true EP1063391B1 (fr) 2004-10-20

Family

ID=7911956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112962A Expired - Lifetime EP1063391B1 (fr) 1999-06-21 2000-06-20 Commande de soupape pour un moteur à combustion interne

Country Status (3)

Country Link
US (1) US6279526B1 (fr)
EP (1) EP1063391B1 (fr)
DE (2) DE19928284A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015428B4 (de) * 2009-03-27 2015-09-10 Unovatis Gmbh Kompensation einer altersbedingten Längenänderung eines Stellelements aus einer Formgedächtnislegierung
CN102562211A (zh) * 2012-02-21 2012-07-11 奇瑞汽车股份有限公司 一种发动机气门弹簧下座
CN103437848B (zh) * 2013-08-29 2015-12-02 刘军 发动机气门弹簧张力调节装置
JP6083398B2 (ja) * 2014-02-21 2017-02-22 トヨタ自動車株式会社 バルブ回転装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114361A (en) * 1961-10-24 1963-12-17 Wilbur L Mullen Spring tension device
GB1473653A (en) 1973-08-18 1977-05-18 British Leyland Uk Ltd Poppet valve and adjustable tappet assembly
US4469057A (en) * 1979-07-09 1984-09-04 Black Alfred A Poppet valve spring retainer with integral mechanical adjustable tappet
EP0172197A4 (fr) * 1984-02-20 1986-07-24 Reginald John Hardy Entrainement de soupape en champignon.
US5044330A (en) * 1990-07-06 1991-09-03 Havens Elwood L Valve spring spacer
DE4129637C2 (de) * 1991-09-06 1998-04-09 Schaeffler Waelzlager Ohg Einrichtung zur Änderung der Federkraft einer Ventilfeder
US5720468A (en) * 1992-10-05 1998-02-24 Aura Systems, Inc. Staggered electromagnetically actuated valve design
DE4403510C2 (de) * 1994-02-04 1995-11-30 Bruss Dichtungstechnik Ventilmodul für Brennkraftmaschinen und Verfahren zu dessen Einbau
KR0164488B1 (ko) * 1994-08-29 1998-12-15 전성원 외부공기를 이용한 밸브리프트 조정장치
US5558054A (en) * 1995-06-07 1996-09-24 Southwest Research Institute Variable preload system for valve springs
DE19641568A1 (de) 1995-10-09 1997-06-19 Edmund Florczak Sicherheitsschloß sowie Verfahren zu seiner Handhabung
DE19741568A1 (de) 1997-09-20 1999-03-25 Heinz Leiber Ventil für einen Verbrennungsmotor
DE19747009C2 (de) * 1997-10-24 2000-11-16 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils

Also Published As

Publication number Publication date
US6279526B1 (en) 2001-08-28
DE19928284A1 (de) 2000-12-28
EP1063391A2 (fr) 2000-12-27
DE50008293D1 (de) 2004-11-25
EP1063391A3 (fr) 2001-05-02

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