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EP1311745B1 - Liaison entre une extremite de queue d'une soupape d'echange de gaz dans un moteur a combustion interne et un element de reglage d'un regulateur de soupape - Google Patents

Liaison entre une extremite de queue d'une soupape d'echange de gaz dans un moteur a combustion interne et un element de reglage d'un regulateur de soupape Download PDF

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Publication number
EP1311745B1
EP1311745B1 EP01955270A EP01955270A EP1311745B1 EP 1311745 B1 EP1311745 B1 EP 1311745B1 EP 01955270 A EP01955270 A EP 01955270A EP 01955270 A EP01955270 A EP 01955270A EP 1311745 B1 EP1311745 B1 EP 1311745B1
Authority
EP
European Patent Office
Prior art keywords
actuator
sleeve
valve
gas exchange
wedge pieces
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
EP01955270A
Other languages
German (de)
English (en)
Other versions
EP1311745A1 (fr
Inventor
Hans Schlembach
Hermann Gaessler
Udo Diehl
Karsten Mischker
Rainer Walter
Ulf Pischke
Andreas Baumann
Hubert Schweiggart
Gerhard Filp
Bernd Rosenau
Juergen Ulm
Uwe Hammer
Thomas Mocken
Sevan Tatiyosyan
Juergen Schiemann
Christian Grosse
Volker Beuche
Stefan Reimer
Simon Kieser
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 EP1311745A1 publication Critical patent/EP1311745A1/fr
Application granted granted Critical
Publication of EP1311745B1 publication Critical patent/EP1311745B1/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
    • F01L1/32—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
    • 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 is based on a connection between a shaft end of a gas exchange valve of an internal combustion engine and an actuator of a valve actuator, according to the preamble of claim 1.
  • connection is known from WO 99/66177, comprising at least two shank-shaped wedge members enclosing the shank end, axially extending on the actuator, the radially outer peripheral surface of which is conical and which are surrounded by at least one cone clamping sleeve whose radially inner peripheral surface is complementary to the cone angle the wedge pieces runs and which is supported axially on the shaft end by a screwed onto this nut is.
  • On the radially inner circumferential surface of the wedge pieces an annular projection is provided which engages in an annular groove on the radially outer peripheral surface of the shaft end.
  • the actuator is formed by a differential piston, which can slide up and down within a cylinder housing of the valve actuator depending on the pressurization of his facing away, frontal piston surfaces.
  • connection according to the invention between a shaft end of a gas exchange valve of an internal combustion engine and an actuator of a valve actuator has the advantage that a shaft of the gas exchange valve from a cylinder head of the internal combustion engine through a actuator housing of the valve actuator through substantially in a region formed in a wall of the actuator housing Opening extends.
  • the valve actuator can be placed as a completely pre-assembled unit first on the cylinder head and then the connection of gas exchange valve and actuator through the opening or outside of the valve actuator housing are made, which facilitates the assembly because of the free accessibility of the opening from above substantially.
  • the compound has the advantage that it does not frictionally but positively by the play-related interlocking projections and recesses, thereby allowing rotational movements of the shaft end relative to the actuator.
  • the opposite the shank end slightly larger diameter of the wedge sleeve formed by the wedge pieces prevents a rotationally fixed frictional engagement between the actuator and gas exchange valve.
  • the actuator need not be mitverformatt with the gas exchange valve to achieve the known by regular rotation of the gas exchange valve about its longitudinal axis advantages such as a homogenization of the valve wear relative to the circumferential direction or a free attitude of the valve seat of deposits.
  • the jet flame of the combustion process then does not always hit the same location of the valve disk, effectively preventing burn hole formation. Since the actuator does not rotate with the gas exchange valve, this can also be easily twisted due to lower frictional forces.
  • the diameter difference between the inner diameter of the wedge sleeve and the outer diameter of the shaft end of the gas exchange valve is preferably a few hundredths of a millimeter.
  • the wedge pieces have at least one extending in the circumferential direction and formed on its radially inner cylindrical peripheral surface annular bead, of which one in an associated, in the shaft end trained annular groove engages.
  • the annular beads and the annular grooves have a substantially semicircular cross-section.
  • the inner radius of the annular grooves is slightly larger than the outer radius of the annular beads.
  • the actuator of the valve actuator is preferably formed by a Sachrhülse which surrounds the shaft end of the gas exchange valve with a radial distance and the free end protrudes a little way from the opening in the wall of the actuator housing.
  • a radially outer circumferential surface of the cone clamping sleeve is flush with a radially inner, cylindrical peripheral surface of the actuator sleeve, whose inner diameter is reduced stepwise in the region of the free end to the cylinder head through a step.
  • the conical clamping sleeve is then interposed between the wedge pieces and the radially inner peripheral surface of the free end of the actuator sleeve, with the outer diameter of the wedge piece tapering conically towards this end and the inner diameter of the conical clamping sleeve being conically widened.
  • a Konusspannhülse exciting on the wedge pieces clamping body is provided at the free end of the actuator sleeve by means of a thread or through a in a radially inner annular groove
  • threads or annular grooves for retaining rings form notches, which can reduce the fatigue strength of the stamped by a gas exchange valves high load cycle number coined connection.
  • the threaded or annular groove for the circlip is out of force flow and is not subject to alternating force application stresses. Rather, subject to the thread or the annular groove for the retaining ring only the wesentlic.en static biasing forces that provide the wedge effect for the cohesion of the wedge pieces. The force is introduced into the gas exchange valve therefore not by the thread or the locking ring but by the interlocking projections and recesses produced, positive connection.
  • the clamping body and a facing this end face of the cone sleeve a clamping plate is interposed.
  • occurring settling phenomena of the components can be compensated and the necessary axial preload can be maintained in the connection.
  • a valvetrain of an internal combustion engine Only one gas exchange valve 1 is shown in Fig.1 for reasons of scale, which is operated by an actuator 2 of a valve actuator 4 such that it performs up and down opening and closing movements.
  • the actuator is designed as a control sleeve 2 which coaxially surrounds a shaft 6 of the gas exchange valve 1 with radial spacing.
  • the shaft 6 of the gas exchange valve 1 extends from a cylinder head of the internal combustion engine, not shown, through an actuator housing 8 of the valve actuator 4 through substantially into a region of an opening 12 formed in an upper wall 10 of the actuator housing 8 and protrudes therefrom with its shaft end 14 preferably a piece out.
  • the free end 16 of the actuator sleeve protrudes out of the opening 12 and projects beyond the shaft end 14 by one piece.
  • a connection 18 between the shaft end 14 of the gas exchange valve 1 and the free end 16 of the actuator sleeve 2 of the valve actuator 4 includes two the shaft end, 14 of the gas exchange valve 1 enclosing, on a shoulder 20 of the actuator sleeve 2 axially supporting, cup-shaped wedge pieces 22, 24, the radially outer peripheral surface is conical.
  • the wedge pieces 22, 24 are of at least one Konusspannhülse 26, the radially inner peripheral surface complementary to the cone angle of the wedge pieces 22, 24 extends, seen in the radial direction, the Konsuspannhülse 26 the wedge pieces 22, 24 and a radially inner cylindrical peripheral surface 28 of the free End 16 of the actuator sleeve 2 is interposed.
  • a cone clamping sleeve 26 is provided on the wedge pieces 22, 24 exciting clamping body 30 which is supported at the free end 16 of the actuator sleeve 2 and which is preferably formed by a threaded piece with hexagon socket, which is screwed into an internal thread 32 of the actuator sleeve 2.
  • the outer diameter of the wedge pieces 22, 24 tapers conically, while the inner diameter of the cone clamping sleeve 26 widens conically in this direction.
  • the tensioning body 30 and an end face of the Kon.usspannhülse 26 facing it, a clamping plate 34 is axially interposed. A possible loss of axial biasing force can also be compensated by elastic design of the actuator sleeve 2.
  • a radially outer, cylindrical peripheral surface 36 of the cone clamping sleeve 26 is flush with the radially inner, cylindrical peripheral surface 28 of the free end 16 of the actuator sleeve 2, whose inner diameter is stepped on the side facing away from the clamping body 30 side of the wedge pieces 22, 24 by the paragraph 20 ,
  • the Konusspannhülse 26 and the wedge pieces 22, 24 the shoulder 20 of the actuator sleeve 2 and the clamping body 30 axially interposed.
  • the force exerted by the clamping body 30 on the Konusspannhülse 26 axial force is so large that on the one hand between the radially outer peripheral surface 36 of the cone clamping sleeve 26 and the radially inner peripheral surface 28 of the actuator sleeve 2 and the other between the associated wedge surfaces of the cone clamping sleeve 26 and
  • the wedge pieces 22, 24 each have static friction, so that the wedge pieces 22, 24 are additionally coupled non-positively with the actuator sleeve 2.
  • the two wedge pieces 22, 24 are braced against each other by the action of the Konsusspannhülse 26 in the radial direction.
  • the wedge pieces 22, 24 in the circumferential direction join each other without gaps and flush and complement each other to a circumferential wedge sleeve whose inner diameter is slightly larger than the technicallyen oncerriesser the shaft end 14 of the gas exchange valve 1
  • no frictional contact between the peripheral surface of the stem end 14 of the gas exchange valve 1 and a radially inner peripheral surface 38 of the wedge sleeve 22, 24 form, which would be sufficient to prevent rotational movements of the shaft end 14 relative to the force-locked with the actuator sleeve 2 rotatably braced wedge sleeve 22, 24 can.
  • the diameter difference between the inner diameter of the wedge sleeve 22, 24 and the outer diameter of the shaft end 14 of the gas exchange valve 1 is preferably a few hundredths of a millimeter.
  • the wedge pieces 22, 24 on its radially inner, cylindrical peripheral surface 38 three equidistantly axially one behind the other, each in the circumferential direction
  • the annular beads 42 and annular grooves 44 have a substantially semicircular cross-section, wherein the inner radius of the annular grooves 44 is preferably larger by a few hundredths of a millimeter than the outer radius of the annular beads 42, as is apparent in particular from Figure 3.
  • This creates both radial and axial play which in turn prevents the formation of static friction between the shaft end 14 and the wedge sleeve 22, 24.
  • the gas exchange valve 1 with respect to the actuator sleeve 2 rotate freely, while their reciprocating movements are transmitted through the play-related, positive connection 18.
  • the clamping body 30 is not supported by a thread, but by engaging in a radially inner annular groove 46 of the actuator sleeve 2 locking ring 48 which engages the upper annular end face of the clamping body 30.
  • the Konusspannhülse 26 is pressed by means of a mounting tool from above into the actuator sleeve 2 and fixed by the retaining ring 48.
  • the clamping disk 34 can then be omitted.
  • the axial movements of the actuator sleeve 2 are transmitted by the wedge pieces 22, 24 on the shaft 6 of the gas exchange valve 1, which are arranged axially spaced from the thread 32 or the locking ring 48.
  • the thread 32 or the locking ring 48 are then in an area outside of the shaft end 14 of the gas exchange valve 1 via the wedge pieces 22, 24 in the actuator sleeve 2 extending force flow.
  • the notches formed by the thread 32 or the annular groove 46 do not reduce the fatigue strength of the compound 18 stamped by a high number of load cycles during gas exchange valves 1.
  • connection 18 Since the connection 18 is located between the shaft end 14 of the gas exchange valve 1 and the actuator sleeve 2 in the region of the opening 12 in the upper wall 10 of the mounted on the cylinder head actuator housing 8, it is easily accessible after mounting the valve actuator 4 on the cylinder head from above.

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

Claims (10)

  1. Régulateur de soupape (4) d'un moteur à combustion interne avec entre une extrémité de queue (14) d'une soupape d'échange de gaz (1) dans un moteur à combustion interne et un élément de réglage (2) d'un régulateur de soupape (4), une liaison (18) comportant au moins deux pièces coniques (22, 24) en forme de coquilles entourant l'extrémité de queue (14) en s'appuyant sur l'élément de réglage (2), dont la surface périphérique radialement extérieure s'étend-de façon conique et qui sont entourées par au moins un manchon de serrage conique (26) dont la surface périphérique radialement intérieure s'étend de façon complémentaire à l'angle du cône des pièces coniques (22, 24), avec des éléments saillants (42) et des creux (44) s'engageant les uns dans les autres sur la surface périphérique radialement intérieure (38) des pièces coniques (22, 24) et sur la surface périphérique radialement extérieure (40) de l'extrémité de queue (14), les pièces coniques vues dans la direction périphérique se joignant l'une à l'autre sans intervalle et se complétant en formant un manchon conique tournant (22, 24) dont le diamètre intérieur est légèrement supérieur au diamètre extérieur de l'extrémité de queue (14) de la soupape d'échange de gaz (1) pour permettre les mouvements rotatifs de l'extrémité de queue (14) relativement aux pièces coniques (22, 24), alors que les éléments saillants (42) et les creux (44) s'engagent les uns dans les autres avec un faible jeu,
    caractérisé en ce qu'
    à partir d'une culasse du moteur à combustion interne, une queue (6) de la soupape d'échange de gaz (1) s'étend à travers un boîtier de régulateur (8) du régulateur de soupape (4) pour l'essentiel jusque dans une zone d'une ouverture (12) formée dans une paroi supérieure (10) du boîtier de régulateur (8), à travers laquelle la liaison (18) est accessible par le haut après montage du régulateur de soupape (4) sur la culasse.
  2. Régulateur de soupape selon la revendication 1,
    caractérisé en ce que
    la différence de diamètre entre le diamètre intérieur du manchon conique (22, 24) et le diamètre extérieur de l'extrémité de queue (14) de la soupape d'échange de gaz (1) est de préférence de quelques centièmes de millimètres.
  3. Régulateur de soupape selon la revendication 2,
    caractérisé en ce que
    les pièces coniques (22, 24) présentent sur leur surface périphérique cylindrique radialement intérieure (38), au moins un bourrelet annulaire (42) qui s'engage respectivement dans une rainure annulaire (44) formée dans l'extrémité de queue (14) associée, afin de transmettre pour l'essentiel par liaison de forme les forces de traction et de pression exercées par l'élément de réglage (2) sur la soupape d'échange de gaz (1).
  4. Régulateur de soupape selon la revendication 3,
    caractérisé en ce que
    le bourrelet annulaire (42) et les rainures annulaires (44) présentent pour l'essentiel une section transversale en forme de demi-cercle, le rayon intérieur des rainures annulaires (44) étant légèrement supérieur au rayon extérieur du bourrelet annulaire (42).
  5. Régulateur de soupape selon la revendication 1,
    caractérisé en ce que
    l'élément de réglage (2) du régulateur de soupape (4) est un manchon de régulateur (2) qui entoure avec un jeu radial l'extrémité de queue (14) de la soupape d'échange de gaz (1), et dont l'extrémité libre (16) dépasse un peu de l'ouverture (12) de la paroi (10) du boîtier de régulateur (8).
  6. Régulateur de soupape selon la revendication 5,
    caractérisé en ce qu'
    une surface périphérique radialement extérieure (36) du manchon de serrage conique (26) est au même niveau qu'une surface périphérique cylindrique radialement intérieure (28) du manchon de régulateur (2), dont le diamètre intérieur se réduit, dans la zone de l'extrémité libre (16) du manchon de régulateur (2), en forme étagée vers la culasse au moyen d'un épaulement (20).
  7. Régulateur de soupape selon la revendication 6,
    caractérisé en ce que
    vu dans la direction radiale, le manchon de serrage conique (26) est disposé entre les pièces coniques (22, 24) et la surface périphérique radialement intérieure (28) du manchon de régulateur (2), le diamètre extérieur des pièces coniques (22, 24) se réduisant en cône vers l'extrémité libre (16) du manchon de régulateur (2) et le diamètre intérieur du manchon de serrage conique (26) s'élargissant en cône.
  8. Régulateur de soupape selon la revendication 7,
    caractérisé en ce qu'
    un corps de serrage (30) serrant le manchon de serrage conique (26) sur les pièces coniques (22, 24), s'appuie à l'extrémité libre (16) du manchon de régulateur au moyen d'un filetage (32) ou par un circlip (48) s'engageant dans une rainure annulaire radialement intérieure (46) du manchon de régulateur (2), de sorte que les pièces coniques (22, 24) sont serrées axialement contre l'épaulement (20).
  9. Régulateur de soupape selon la revendication 7 ou 8,
    caractérisé en ce que
    le filetage (32) ou le circlip (48) est dans une zone du manchon de régulateur (2) de préférence axialement écartée des pièces coniques (22, 24) engagées en cône l'une avec l'autre et des manchons de serrage coniques (26).
  10. Régulateur de soupape selon la revendication 9,
    caractérisé par
    une rondelle de serrage (34) interposée entre le corps de serrage (30) et une face frontale, tournée en face de celui-ci, du manchon de serrage conique (26).
EP01955270A 2000-08-17 2001-07-20 Liaison entre une extremite de queue d'une soupape d'echange de gaz dans un moteur a combustion interne et un element de reglage d'un regulateur de soupape Expired - Lifetime EP1311745B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10040114 2000-08-17
DE10040114A DE10040114A1 (de) 2000-08-17 2000-08-17 Verbindung zwischen einem Schaftende eines Gaswechselventils einer Brennkraftmaschine und einem Stellglied eines Ventilstellers
PCT/DE2001/002762 WO2002014655A1 (fr) 2000-08-17 2001-07-20 Liaison entre une extremite de queue d'une soupape d'echange de gaz dans un moteur a combustion interne et un element de reglage d'un regulateur de soupape

Publications (2)

Publication Number Publication Date
EP1311745A1 EP1311745A1 (fr) 2003-05-21
EP1311745B1 true EP1311745B1 (fr) 2006-07-26

Family

ID=7652677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01955270A Expired - Lifetime EP1311745B1 (fr) 2000-08-17 2001-07-20 Liaison entre une extremite de queue d'une soupape d'echange de gaz dans un moteur a combustion interne et un element de reglage d'un regulateur de soupape

Country Status (8)

Country Link
US (1) US6688268B2 (fr)
EP (1) EP1311745B1 (fr)
JP (1) JP2004506828A (fr)
KR (1) KR20020039692A (fr)
CN (1) CN1258639C (fr)
DE (2) DE10040114A1 (fr)
HU (1) HUP0203702A2 (fr)
WO (1) WO2002014655A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116218A1 (de) * 2001-03-30 2002-10-10 Bosch Gmbh Robert Verbindung zwischen einem Schaftende eines Gaswechselventils einer Brennkraftmaschine und einem hülsenförmigen Stellkolben eines Ventilstellers
DE10141176A1 (de) * 2001-08-22 2003-03-20 Bosch Gmbh Robert Lösbare Verbindung zum Kuppeln eines Gaswechselventils einer Brennkraftmaschine mit einem Aktor
DE10321157A1 (de) 2003-05-12 2004-12-02 Robert Bosch Gmbh Ventilsteller zur Betätigung eines Gaswechselventils einer Brennkraftmaschine
JP4778506B2 (ja) * 2004-04-27 2011-09-21 メルキッシェズ ヴェルク ゲゼルシャフト ミット ベシュレンクテル ハフツング 特に船舶用ディーゼルエンジンの排気バルブのためのバルブ回転装置
AT501335B1 (de) * 2005-01-19 2007-05-15 Avl List Gmbh Ventilbetätigungseinrichtung
CN102345479A (zh) * 2011-09-01 2012-02-08 余姚市舒春机械有限公司 一种大功率柴油机气门锁夹及其加工方法
US9822901B2 (en) 2014-06-25 2017-11-21 Ge Oil & Gas Pressure Control Lp Actuator adapter for bonnet nub stem design
US11193553B2 (en) * 2017-08-25 2021-12-07 Thyssenkrupp Bilstein Gmbh Vibration damper for vehicles, a piston rod, a piston rod attachment and a method for fixing an attachment element on a piston rod of a vibration damper, in particular for vehicles
KR102370248B1 (ko) * 2021-01-14 2022-03-04 (주)수산인더스트리 밸브 패킹 마찰력 산출 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838218A (en) * 1986-06-12 1989-06-13 Ngk Spark Plug Co., Ltd. Ceramic valve supporting structure in use for internal combustion engine
DE4117406A1 (de) * 1991-05-28 1992-12-03 Freudenberg Carl Fa Ventiltrieb im zylinderkopf einer verbrennungskraftmaschine
DK167499B1 (da) * 1991-06-27 1993-11-08 Man B & W Diesel Gmbh Spaerreluftarrangement ved en forbraendingsmotor
JP3331526B2 (ja) * 1993-11-25 2002-10-07 フジオーゼックス株式会社 ポペット弁の駆動装置
EP0742349A1 (fr) * 1995-05-12 1996-11-13 Fuji Oozx Inc. Dispositif de soupape soulevante
DE19647412C1 (de) * 1996-11-15 1998-01-15 Audi Ag Vorrichtung zur Drehung eines von einem Betätigungselement beaufschlagten Ventils einer Brennkraftmaschine
DE19826046A1 (de) 1998-06-12 1999-12-16 Bosch Gmbh Robert Ventilsteuerungsvorrichtung für eine Brennkraftmaschine

Also Published As

Publication number Publication date
US6688268B2 (en) 2004-02-10
CN1258639C (zh) 2006-06-07
WO2002014655A1 (fr) 2002-02-21
DE10040114A1 (de) 2002-02-28
CN1388851A (zh) 2003-01-01
JP2004506828A (ja) 2004-03-04
EP1311745A1 (fr) 2003-05-21
DE50110554D1 (de) 2006-09-07
US20030019453A1 (en) 2003-01-30
KR20020039692A (ko) 2002-05-27
HUP0203702A2 (en) 2003-03-28

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20030317

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Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REIMER, STEFAN

Inventor name: ROSENAU, BERND

Inventor name: MISCHKER, KARSTEN

Inventor name: KIESER, SIMON

Inventor name: PISCHKE, ULF

Inventor name: BEUCHE, VOLKER

Inventor name: WALTER, RAINER

Inventor name: MOCKEN, THOMAS

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