EP1307636B1 - Connexion entre deux extremites d'arbre, placees l'une apres l'autre de maniere coaxiale, d'une soupape d'echange gazeux d'un moteur a combustion interne et un actionneur de soupape - Google Patents

Connexion entre deux extremites d'arbre, placees l'une apres l'autre de maniere coaxiale, d'une soupape d'echange gazeux d'un moteur a combustion interne et un actionneur de soupape Download PDF

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Publication number
EP1307636B1
EP1307636B1 EP01956337A EP01956337A EP1307636B1 EP 1307636 B1 EP1307636 B1 EP 1307636B1 EP 01956337 A EP01956337 A EP 01956337A EP 01956337 A EP01956337 A EP 01956337A EP 1307636 B1 EP1307636 B1 EP 1307636B1
Authority
EP
European Patent Office
Prior art keywords
coupling body
valve
connection
tension
conical
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
EP01956337A
Other languages
German (de)
English (en)
Other versions
EP1307636A1 (fr
Inventor
Hermann Gaessler
Udo Diehl
Karsten Mischker
Rainer Walter
Bernd Rosenau
Jürgen Schiemann
Christian Grosse
Georg Mallebrein
Volker Beuche
Stefan Reimer
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 EP1307636A1 publication Critical patent/EP1307636A1/fr
Application granted granted Critical
Publication of EP1307636B1 publication Critical patent/EP1307636B1/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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • 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
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2125—Shaft and armature construction

Definitions

  • the invention is based on a connection between two coaxially successively arranged shaft ends of a gas exchange valve of an internal combustion engine and a valve actuator, with at least one coupling body at least partially enclosing the shaft ends according to the preamble of claim 1.
  • Such a compound is known from EP 0 279 265 B1, in which the coupling body consists of two half-shells, the radially outer peripheral surfaces cylindrical and the radially inner peripheral surfaces complementary conically to the conically tapered ends of a piston rod of the valve actuator and a shaft of the gas exchange valve are formed.
  • a cylindrical cap sleeve is pushed over this, which is held on the half-shells by the axial biasing force of a valve sleeve supporting the bottom of the cap, wherein the shaft of the gas exchange valve extends through an opening in the bottom of the cap sleeve ,
  • the two mutually tapered shank ends have at the end plate-like flared flanges, which engages behind the coupling body formed by the half-shells, so that the two shaft ends are positively connected to each other by the coupling body.
  • the cross section is weakened by a respective pronounced notch, which has a negative effect on the fatigue strength of the connection. This is a significant disadvantage, especially in view of the high number of load cycles to which gas exchange valves of internal combustion engines are exposed.
  • the compound of the invention is characterized by a high fatigue strength.
  • the clamping body on the coupling body bias adjustable.
  • the clamping body includes at least two conical clamping sleeves with conical surfaces which can be screwed against each other axially, which can be wedged against conical clamping surfaces formed on the radially outer peripheral surface of the coupling body, wherein a defined radial prestress between the coupling body and the shaft ends can be generated depending on the degree of screwing of the cone clamping sleeves.
  • This is particularly advantageous in view of the possibly depending on the gas exchange valve or valve plate different surface texture and correspondingly different coefficient of friction by the necessary radial for a slip friction adhesion radial bias can be adjusted.
  • the coupling body is formed in several parts in the circumferential direction and preferably includes at least two complementary to a sleeve semi-tubular coupling wedges, each of which has two at its radially outer peripheral surface successively arranged, mutually conically widening clamping surfaces, each of which a clamping surface of a conical surface of the Konusspannhülsen assigned.
  • both Konusspann sleeves are each provided with a lug surface for a screwing.
  • positioning of the coupling body on the shaft ends on the coupling body and one end of the shaft are preferably provided with play engaging positioning projections and positioning recesses. This ensures that the coupling body is stretched in a defined position against the shaft ends and there is a balanced surface coverage.
  • the play-related engagement of the positioning projections and recesses reduces the stiffness-reducing notch tensions.
  • the coupling wedges on their radially inner, cylindrical peripheral surface in the circumferential direction utilizatde annular beads, each of which an annular bead is associated with each of an annular groove of a shaft end.
  • the annular beads and annular grooves have a substantially semicircular cross-section, wherein the inner radius of the annular grooves is greater than the outer radius of the annular beads in order to avoid direct contact with the material as possible and to keep the notch stresses caused by the annular grooves low.
  • connection between the valve actuator and the gas exchange valve is preferably arranged in an accessible area outside a valve actuator housing. Then an exchange of gas exchange valve or valve actuator in case of repair is very easy possible, a disassembly of the valve actuator is not necessary for this.
  • a gas exchange valve 1 is shown in Figure 1, which is actuated by a piston rod 2 of a valve actuator 4 such that it performs up and down opening and closing movements.
  • the piston rod 2 of the valve actuator 4 and a shaft 6 of the gas exchange valve 1 are arranged coaxially one behind the other, with a shaft end 8 of the piston rod 2 and a shaft end 10 of the shaft 6 of the gas exchange valve 1 opposite each other.
  • the piston rod 2 and the shaft 6 of the gas exchange valve 1 preferably have the same diameter.
  • a coupling body 14 is provided, which surrounds both the shaft end 8 of the piston rod 2 as well as the shaft end 10 of the gas exchange valve 1 at least partially.
  • the coupling body 14 is preferably formed in several parts in the circumferential direction and consists of two substantially complementary to a sleeve semi-tubular coupling wedges 16,18, as best seen in the sectional view of Fig.2.
  • the radially inner peripheral surfaces of the two coupling wedges 16,18 are cylindrical and have As seen in the circumferential direction, the two coupling wedges 16, 18 do not adjoin one another without gaps, but a narrow gap 20 remains at each of the two joints, so that the two coupling wedges 16 remain in the same position , 18 a circumferential compensation is present when it is exerted on them from the outside radial pressure.
  • positioning positioning projections and positioning recesses are provided for positioning the coupling body 14 on the shaft ends 8, 10 on the coupling body 14 and on each end of a shaft 8, 10. This ensures that the coupling body 14 is in a defined position relative to the two shaft ends 8,10 and there is a balanced surface coverage.
  • the two coupling wedges 14, 16 have at their radially inner, cylindrical circumferential surface two circumferentially extending annular beads, of which one upper annular bead 22 is formed in a shaft end 8 of the piston rod 2 formed circumferential annular groove 24 and a lower annular bead 26 engages in an existing on the shaft end 10 of the gas exchange valve 1 annular groove 28.
  • the mutually associated annular beads 22,26 and annular grooves 24,28 have a substantially semi-circular cross-section as apparent in particular from the enlarged view A of Figure 3.
  • the annular beads 22,26 are not in the annular grooves 24,28 of the shaft ends, since the inner radius is greater than the outer radius of the annular beads 22,26.
  • the two semi-tubular coupling wedges 16,18 have each at its radially outer peripheral surface successively arranged, mutually conically widening clamping surfaces 30,32 in order to clamp the coupling wedges 16,18 radially against the two shaft ends 8,10.
  • a clamping body preferably two mutually axially screwed Konusspannhülsen 34,36 provided with conical surfaces 38,40, which are wedged against the clamping surfaces 30,32 of the coupling wedges 16,18, depending on the Verschraubungsgrad the two Konusspannhülsen 34,36 a defined radial bias between the coupling wedges 16,18 and the two shaft ends 8,10 can be generated.
  • the upper cone clamping sleeve 34 is screwed into the lower cone clamping sleeve 36 by the upper cone clamping sleeve 34 is provided at its radially outer peripheral surface with an external thread 42 and the lower cone clamping sleeve 36 at its radially inner peripheral surface with a diametrically identical internal thread 44.
  • Both conical clamping sleeves 34,36 are provided at their ends facing away from each other, each with a lug surface 48,50 for a screwing.
  • the Ringwulst- / Ringnutformept thus serve primarily the positional fixation of the coupling body 14 to the shaft ends 8,10 and can therefore be correspondingly small dimensions, consequently their notch effect on the shaft ends 8,10 and their influence on the fatigue strength of the compound low.
  • valve actuator 4 The described connection between the piston rod 2 of the valve actuator 4 and the shaft 6 of the gas exchange valve is as shown in Fig.1 outside a valve actuator housing 52 of the valve actuator 4 and arranged in an easily accessible area, so that the valve actuator 4 and the gas exchange valve 1 each as individual modules easy to assemble and disassemble.
  • the coupling body 14 could also be designed as a one-piece sleeve, in which case a continuous, axially extending slot must be provided in the wall of the sleeve in order to allow a compensating movement of the integral sleeve in the circumferential direction when radially biasing is applied from the outside by the wedging action of the cone clamping sleeves 34, 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Actuator (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Valve Device For Special Equipments (AREA)
  • Braking Arrangements (AREA)

Abstract

La présente invention concerne une connexion entre deux extrémités d'arbre (8, 10), placées l'une après l'autre de manière coaxiale, d'une soupape d'échange gazeux (1) d'un moteur à combustion interne et une tige de piston (2) d'un actionneur de soupape (4), à l'aide d'au moins un élément d'accouplement (14) qui entoure au moins partiellement les extrémités d'arbre (8, 10). L'objectif de cette invention est de produire un contact par friction entre chaque extrémité d'arbre (8, 10) et l'élément d'accouplement (14), ce contact permettant de transmettre sans glissement le mouvement de réglage de l'actionneur de soupape (4) sur la soupape d'échange gazeux (1). A cette fin, ledit élément d'accouplement (14) est serré radialement contre les deux extrémités d'arbre (8, 10), sous l'effet d'au moins un élément de serrage (34, 36). Cette invention permet à la fois d'améliorer la résistance à la fatigue de la connexion et de simplifier son montage et son démontage.

Claims (8)

  1. Liaison entre deux extrémités d'arbre (8, 10), coaxiales l'une derrière l'autre, d'une soupape d'échange des gaz (1) d'un moteur à combustion interne et d'une tige de piston (2) d'un actionneur de soupape (4), comprenant au moins un organe d'accouplement (14) entourant au moins partiellement les extrémités d'arbre (8, 10),
    caractérisée en ce que
    pour générer une liaison d'adhérence par frottement, transmettant sans à-coups le mouvement d'actionnement de l'actionneur de soupape (4) sur la soupape d'échange des gaz (1), entre chacune des extrémités d'arbre (8, 10) et l'organe d'accouplement (14), ce dernier est serré radialement contre les deux extrémités d'arbre (8, 10) par l'action d'au moins un corps de serrage (34, 36).
  2. Liaison selon la revendication 1,
    caractérisée en ce que
    le corps de serrage contient au moins deux douilles de serrage coniques (34, 36) avec des surfaces de cône (38, 40), pouvant être vissées axialement l'une contre l'autre, et qui peuvent être calées contre des surfaces de serrage coniques (30, 32) configurées au niveau de la surface périphérique extérieure radiale du corps d'accouplement (14), permettant de générer une précontrainte radiale produisant la liaison d'adhérence par frottement entre l'organe d'accouplement (14) et les extrémités d'arbre (8, 10).
  3. Liaison selon la revendication 2,
    caractérisée en ce que
    l'organe d'accouplement, vu dans la direction périphérique, est conçu en plusieurs parties et contient de préférence deux cales d'accouplement (16, 18) en forme de demi-tubes, qui se complètent pour former une douille, et dont chacune présente au niveau de sa surface périphérique extérieure radiale des surfaces de serrage (30, 32) s'élargissant de façon conique l'une par rapport à l'autre et disposées l'une derrière l'autre, et à chaque surface de serrage (30, 32) est associée une surface conique (38, 40) de l'une des douilles de serrage coniques (34, 36).
  4. Liaison selon la revendication 2 ou 3,
    caractérisée en ce que
    les deux douilles de serrage coniques (34, 36) sont chacune pourvues d'une surface d'application (48, 50) pour un outil de vissage.
  5. Liaison selon l'une des revendications précédentes,
    caractérisée en ce que
    pour le positionnement de l'organe d'accouplement (14) par rapport aux extrémités d'arbre (8, 10), on prévoit au niveau de l'organe d'accouplement (14) et au niveau de chacune des extrémités d'arbre (8, 10) des saillies de positionnement (22, 26) et des évidements de positionnement (24, 28) s'engageant les uns dans les autres de préférence avec un certain jeu.
  6. Liaison selon les revendications 3 à 5,
    caractérisée en ce que
    les cales d'accouplement (16, 18) présentent au niveau de leur surface périphérique cylindrique radiale intérieure au moins deux bourrelets annulaires (22, 26) s'étendant en direction périphérique, et au moins chacun des bourrelets annulaires (22, 26) est associé à chaque fois une rainure annulaire (24, 28) d'une extrémité d'arbre (8, 10).
  7. Liaison selon la revendication 6,
    caractérisée en ce que
    les bourrelets annulaires (22, 26) et les rainures annulaires (24, 28) présentent une section transversale pour l'essentiel en demi-cercle, le rayon intérieur des rainures annulaires (24, 28) étant supérieur au rayon extérieur des bourrelets annulaires (22, 26).
  8. Liaison selon l'une des revendications précédentes,
    caractérisée en ce qu'
    elle est disposée dans une zone accessible, à l'extérieur d'un boîtier d'actionneur de soupape (52).
EP01956337A 2000-07-28 2001-07-18 Connexion entre deux extremites d'arbre, placees l'une apres l'autre de maniere coaxiale, d'une soupape d'echange gazeux d'un moteur a combustion interne et un actionneur de soupape Expired - Lifetime EP1307636B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10036810A DE10036810A1 (de) 2000-07-28 2000-07-28 Verbindung zwischen zwei koaxial hintereinander angeordneten Schaftenden eines Gaswechselventils einer Brennkraftmaschine und eines Ventilstellers
DE10036810 2000-07-28
PCT/DE2001/002691 WO2002010558A1 (fr) 2000-07-28 2001-07-18 Connexion entre deux extremites d'arbre, placees l'une apres l'autre de maniere coaxiale, d'une soupape d'echange gazeux d'un moteur a combustion interne et un actionneur de soupape

Publications (2)

Publication Number Publication Date
EP1307636A1 EP1307636A1 (fr) 2003-05-07
EP1307636B1 true EP1307636B1 (fr) 2006-04-19

Family

ID=7650538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01956337A Expired - Lifetime EP1307636B1 (fr) 2000-07-28 2001-07-18 Connexion entre deux extremites d'arbre, placees l'une apres l'autre de maniere coaxiale, d'une soupape d'echange gazeux d'un moteur a combustion interne et un actionneur de soupape

Country Status (8)

Country Link
US (1) US6752116B2 (fr)
EP (1) EP1307636B1 (fr)
JP (1) JP2004505194A (fr)
KR (1) KR100777933B1 (fr)
CN (1) CN1258640C (fr)
DE (2) DE10036810A1 (fr)
HU (1) HUP0202740A2 (fr)
WO (1) WO2002010558A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141176A1 (de) * 2001-08-22 2003-03-20 Bosch Gmbh Robert Lösbare Verbindung zum Kuppeln eines Gaswechselventils einer Brennkraftmaschine mit einem Aktor
US7796804B2 (en) * 2007-07-20 2010-09-14 Kla-Tencor Corp. Methods for generating a standard reference die for use in a die to standard reference die inspection and methods for inspecting a wafer
CN102678220B (zh) * 2011-03-08 2016-04-20 朱譞晟 轴向驱动单轴双控圆弧滑槽式全可变气门正时和升程机构
KR101176046B1 (ko) 2011-12-30 2012-08-24 오종찬 제철연주설비 세그먼트 자동 테이퍼 제어 블럭의 분리형 셔틀밸브
FR3000534A1 (fr) * 2013-01-02 2014-07-04 Peugeot Citroen Automobiles Sa Liaison entre la queue d'une soupape et son actionneur
CN104314635B (zh) * 2014-09-04 2017-01-11 宁波华液机器制造有限公司 可变驱动器
DE102017206151B3 (de) * 2017-04-11 2018-10-11 Ford Global Technologies, Llc Brennkraftmaschine umfassend Ventiltriebe mit Ventilfedern und Verfahren zum Montieren einer derartigen Ventilfeder
US11092209B2 (en) * 2017-08-25 2021-08-17 Thyssenkrupp Bilstein Gmbh Vibration damper for vehicles, a piston rod and a method for fixing a working piston on a piston rod of a vibration damper
CN109794764B (zh) * 2019-04-04 2024-03-29 深圳万测试验设备有限公司 同轴调节装置

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Publication number Priority date Publication date Assignee Title
FR931101A (fr) * 1945-07-23 1948-02-13 Eaton Mfg Co Perfectionnements apportés à une soupape pour moteur à combustion interne
SU1621816A3 (ru) 1987-02-10 1991-01-15 Интератом Гмбх (Фирма) Гидравлическое устройство управлени клапанами двигател внутреннего сгорани
JPH1113435A (ja) * 1997-06-25 1999-01-19 Toyota Motor Corp 電磁駆動弁
DE19811779C1 (de) * 1998-03-18 1999-04-22 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils für eine Brennkraftmaschine
DE19824475A1 (de) * 1998-05-30 1999-12-02 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils in einer Brennkraftmaschine
DE19947848A1 (de) 1998-10-28 2000-05-04 Fev Motorentech Gmbh Aktuator zur Betätigung eines Stellgliedes, insbesondere eines Gaswechselventils mit einseitiger Federanordnung

Also Published As

Publication number Publication date
KR20020032626A (ko) 2002-05-03
US6752116B2 (en) 2004-06-22
EP1307636A1 (fr) 2003-05-07
CN1258640C (zh) 2006-06-07
HUP0202740A2 (en) 2002-12-28
DE50109559D1 (de) 2006-05-24
US20030029410A1 (en) 2003-02-13
DE10036810A1 (de) 2002-02-07
KR100777933B1 (ko) 2007-11-20
JP2004505194A (ja) 2004-02-19
CN1386159A (zh) 2002-12-18
WO2002010558A1 (fr) 2002-02-07

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