EP0849437B1 - Ventilsteuerungseinrichtung für Fahrzeugmotor - Google Patents

Ventilsteuerungseinrichtung für Fahrzeugmotor Download PDF

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Publication number
EP0849437B1
EP0849437B1 EP19970402836 EP97402836A EP0849437B1 EP 0849437 B1 EP0849437 B1 EP 0849437B1 EP 19970402836 EP19970402836 EP 19970402836 EP 97402836 A EP97402836 A EP 97402836A EP 0849437 B1 EP0849437 B1 EP 0849437B1
Authority
EP
European Patent Office
Prior art keywords
plate
height
face
support face
adjustment
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
EP19970402836
Other languages
English (en)
French (fr)
Other versions
EP0849437A1 (de
Inventor
Philippe Chemin
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0849437A1 publication Critical patent/EP0849437A1/de
Application granted granted Critical
Publication of EP0849437B1 publication Critical patent/EP0849437B1/de
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
    • F01L1/20—Adjusting or compensating clearance

Definitions

  • the present invention relates to a device for control of a motor vehicle engine valve.
  • a vehicle engine valve control device automobile of the type comprising a camshaft biasing a valve stem via a latch activated by a corresponding cam of the shaft, the latch having a first end support oscillatingly mounted on a support member carried by a motor support face and a second end of control cooperating with the valve stem, and of the type comprising means for adjusting the height of the member of support relative to the support face.
  • the height adjustment of the support member allows adjusting the clearance between the latch and the corresponding cam.
  • This type of adjustment means has the disadvantage cause unwanted friction between the latch and the corresponding cam.
  • a device for controlling a motor vehicle engine valve of the type comprising a camshaft urging a valve stem through a latch actuated by a corresponding cam of the shaft, the latch comprising a first support end mounted to oscillate on a support member carried by a motor support face and a second cooperating control end with the valve stem, and of the type comprising adjustment means in height of the support member with respect to the support face, in which the member support is slidably mounted parallel to its height on the support face, and what the height adjustment means displaceable substantially perpendicularly at the height of the support member, provided with an adjustment ramp in height cooperating with an additional ramp provided on the support member and, means for immobilizing the means for adjusting the height with respect to to the support face in a desired adjustment position.
  • the object of the invention is to remedy these drawbacks so as to obtain means of adjustment in space-saving support member height, easily accessible, reliable and simple to manufacture.
  • the subject of the invention is a device for controlling a motor vehicle engine valve, of the aforementioned type, characterized in that the support member is slidably mounted parallel to its height on the support face.
  • the height adjustment means comprise, on the one hand, a movable plate substantially perpendicular to the height of the support member, provided with a height adjustment ramp cooperating with a complementary ramp formed on the support member, and on the other hand, means for immobilizing the plate relative to the support face in a desired adjustment position, said plate being mounted on the support face so as to be movable in rotation about an axis substantially parallel to the height of the support member, the adjustment ramp extending in a helix around the axis of rotation of the plate.
  • a device 10 for the control of a valve 12 of internal combustion engine for a motor vehicle.
  • the device 10 is arranged in a cylinder head 14 of the engine which has been shown an upper face 16 on Figures 3 and 5.
  • the device 10 comprises a camshaft 18 biasing a valve stem 20 via a latch 22 actuated by a corresponding cam 24 from tree 18.
  • the latch 22 has a first end support 22A oscillatingly mounted on a support member 26 and a second control end 22B cooperating with the free end of the valve stem 20.
  • the support member 26 is carried by the upper face 16 of the cylinder head, forming a support and called by the continuation "face-support 16".
  • the latch 22 also includes a roller 28 of cooperation with cam 24. This roller is rotatably mounted, between the two ends 22A, 22B of the latch, around an axis materialized by a pin 30 substantially parallel to the camshaft 18.
  • the roller 28 can rotate freely in a center hole 32 of the latch and protrudes outside of this bore 32 to cooperate with the cam 24.
  • the support member has a generally cylindrical shape elongated according to its height and is mounted on the support face 16 so as to slide parallel to its height, as will be described in more detail by the after.
  • the control device 10 comprises means 34 for adjusting the height of the support member 26 by relative to the support face 16.
  • These adjustment means 34 comprise a plate 36 movable substantially perpendicular to the height of the support member 26.
  • This plate 36 is provided with a ramp 38 of height adjustment cooperating with a complementary ramp 40 formed on the support member 26, as is shown in particular in Figure 4.
  • the adjustment means 34 also include means 42 for immobilizing the plate 36 by relative to the support face 16 in an adjustment position in desired height.
  • the plate is mounted on the support face 16 so as to be movable in rotation around an X axis substantially parallel to the height of the support member 26.
  • plate 36 has the general shape of a delimited disk by two upper faces 36S and lower 36I.
  • the adjustment ramp 38 is formed in the face upper 36S so as to extend in a helix around the X axis of rotation of the stage.
  • the lower face 36I is supported on the support face 16.
  • the axis X of rotation of the plate 36 is materialized by a pivot 44, integrally with the underside 36I of the disc, mounted swiveling in a hole blind 46 formed in the support face 16.
  • the plate 36 has two buttonholes 48.50 curvilinear, extending around the X axis of rotation of the plate, respectively in two sectors substantially diametrically opposite.
  • the support member 26 has an upper part 26S, extending above the plate 36, provided with a swivel end connected to the first end 22A of the latch, and a lower part 26I, extending in below this plate 36, slidably fitted in a blind hole 52 made in the support face 16.
  • the support member 26 is immobilized in rotation around its Y axis by cooperation of curvilinear surfaces 54.56 complementary on itself and on a shoulder delimiting the adjustment ramp 38.
  • the means 42 for immobilizing the plate 36 preferably include a screw 58 for tightening the plate 36 against the support face 16, crossing the second buttonhole 50 and screwed into a tapped hole 60 formed in the support face 16.
  • the holes 52 and 60 in which are housed respectively the support member 26 and the screw clamp 58, are substantially diametrically opposed relative to the X axis and offset from each other in parallel to the camshaft 18.
  • the clamping screw 58 is spaced from the cam 24 transversely to the radius means of this cam (see Figure 2). So the position of the tightening screw 58 is independent of the mean radius of cam 24.
  • the plate 36 has a notch on its periphery maneuver 62 intended to cooperate with a conventional tool 64, of complementary shape, intended to move the plate 36 rotating around the X axis.
  • the notch 62 can be replaced by an operating projection intended to cooperate with a appropriate complementary tool.
  • the plate 36 is manufactured, for example, by a conventional sintering process.
  • the means 34 for adjusting the height of the member support 26 are very simple to implement.
  • the plate 36 is rotated by fitting the tool 64 in the notch 62. Due to the cooperation additional adjustment ramps 38.40, the unit support 26 rises or falls to the height desired, depending on the direction of rotation of the plate 36.
  • the member support 26 and screw 58 move relative to this platinum 36 in the buttonholes 48.50.
  • the support body 26 only moves relatively to the cylinder head 14 longitudinally along its Y axis, by sliding in hole 52 of the cylinder head.
  • the plate 36 After adjusting the height of the support member 26, the plate 36 is immobilized by clamping against the support face 16 by means of screw 58.
  • the invention is not limited to the embodiment previously described.
  • the plate 36 can be moved by translation.
  • the adjustment ramp and the buttonholes are straight.
  • the invention has many advantages.
  • the height adjustment means of the support member are easily accessible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (9)

  1. Vorrichtung (10) zur Steuerung eines Kraftfahrzeugmotor-Ventiles (12), mit einer Nockenwelle (18), welche einen Ventilschaft (20) mittels einer zwischenliegenden Klinke (22) belastet, die von einer zugeordneten Nocke (24) der Welle (18) betätigt wird, wobei die Klinke (22) aufweist ein erstes Stützende (22A), das schwenkbar an einem Stützteil (26) gelagert ist, welches an einer Stützfläche (16) des Motors gehalten ist, und ein zweites Steuerende (22B), das mit dem Ventilschaft (20) zusammenwirkt, und mit Mitteln (34) zum Einstellen der Höhe des Stützteils (26) relativ zu der Stützfläche (16), dadurch gekennzeichnet, dass das Stützteil (26) parallel zu seiner Höhe verschiebbar an der Auflagefläche (16) angebracht ist, und dass die Höheneinstellelemente (34) zum einen eine Platte (36) aufweisen, die im wesentlichen senkrecht zur Höhe des Stützteils (26) verschiebbar ist sowie mit einer Höheneinstellrampe (38) versehen ist, die mit einer an dem Stützteil (26) angeordneten Gegen-Rampe (40) zusammenwirkt, und zum anderen Mittel (42) aufweisen, um die Platte (36) relativ zu der Stützfläche (16) in einer gewünschten Einstellposition zu fixieren, wobei die Platte (36) derart auf der Stützfläche (16) montiert ist, dass sie via Rotation um eine Achse (X) verschiebbar ist, die im wesentlichen parallel zur Höhe des Stützteils (22) verläuft, wobei sich die Einstellrampe (38) wendelförmig um die Drehachse (X) der Platte erstreckt.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Platte (36) eine erste längliche Aussparung (48) hat, die vom Stützteil (26) durchdrungen wird und in der Einstellrampe (38) angeordnet ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Fixiermittel (42) der Platte (36) eine Schraube (58) zum Pressen der Platte gegen die Stützfläche (16) aufweisen, welche Schraube durch eine zweite längliche Aussparung (50) der Platte verläuft und in eine in der Stützfläche (16) angeordnete Gewindebohrung (60) geschraubt ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die zwei länglichen Aussparungen (48, 50) gekrümmt sind und sich jeweils in zwei im wesentlichen diametral gegenüberliegenden Bogenstücken um die Drehachse (X) der Platte herum erstrecken.
  5. Vorrichtung nach Anspruch 1 oder 4, dadurch gekennzeichnet, dass die Platte (36) aufweist eine obere Fläche (36S), in welcher die Einstellrampe (38) angeordnet ist, und eine untere Fläche (36I), die auf der Stützfläche (16) aufliegt, wobei die Drehachse (X) der Platte (36) von einem Zapfen (44) gebildet wird, der einstückig an der unteren Fläche (36I) der Platte angeformt ist und der drehbar in eine in der Stützfläche (16) angeordnete Bohrung (46) eingesetzt ist.
  6. Vorrichtung nach einem der Ansprüche 1, 4 oder 5, dadurch gekennzeichnet, dass die Platte (36) in der Grundform scheibenförmig ist und auf ihrem Umfang eine Handhabungskerbe (62) oder einen Handhabungsvorsprung aufweist, die/der dazu vorgesehen ist, um mit einem Werkzeug (64) zur Drehverschiebung der Platte (36) zusammenzuwirken.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Stützteil (26) in der Grundform die Gestalt eines in Richtung seiner Höhe langgestreckten Zylinders hat und um seine Achse (Y) mittels des Zusammenwirkens der Gegenflächen (54, 58), die an ihm selbst und an einem der Einstellrampe (38) begrenzenden Absatz vorgesehen sind, drehfest ist.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das Stützteil (26) aufweist einen oberen Abschnitt (26S), der sich oberhalb der Platte (36) erstreckt und der mit einem Kugelgelenk-Abschluss versehen ist, der mit dem ersten Stützende (22A) der Klinke verbunden ist, und einen unteren Abschnitt (26I), der sich unterhalb der Platte (36) erstreckt und der in einer Bohrung (52) verschiebbar aufgenommen ist, die in der Platte (16) vorgesehen ist.
  9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Stützfläche (16) eine Fläche von einem Zylinderkopf (14) des Motors ist.
EP19970402836 1996-12-20 1997-11-25 Ventilsteuerungseinrichtung für Fahrzeugmotor Expired - Lifetime EP0849437B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9615783 1996-12-20
FR9615783A FR2757564B1 (fr) 1996-12-20 1996-12-20 Dispositif de commande d'une soupape de moteur de vehicule automobile

Publications (2)

Publication Number Publication Date
EP0849437A1 EP0849437A1 (de) 1998-06-24
EP0849437B1 true EP0849437B1 (de) 2002-01-30

Family

ID=9498946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970402836 Expired - Lifetime EP0849437B1 (de) 1996-12-20 1997-11-25 Ventilsteuerungseinrichtung für Fahrzeugmotor

Country Status (4)

Country Link
EP (1) EP0849437B1 (de)
DE (1) DE69710170T2 (de)
FR (1) FR2757564B1 (de)
SG (1) SG79954A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2578338B (en) * 2019-03-07 2020-12-09 Cox Powertrain Ltd Marine outboard motor with valve train having adjustable lash

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1249387A (fr) * 1959-11-13 1960-12-30 Renault Perfectionnements à la commande des soupapes d'un moteur par arbre à cames en tête
US3298333A (en) * 1965-01-14 1967-01-17 Stephen F Briggs Valve actuating mechanism with mechanical means for self-adjustment
US3791355A (en) * 1972-02-24 1974-02-12 Johnson Products Inc Mechanical lash adjuster for overhead cam engines
JPS63297709A (ja) * 1987-05-28 1988-12-05 Fuji Heavy Ind Ltd 内燃機関のバルブクリアランス調整装置
US5075749A (en) * 1989-12-29 1991-12-24 At&T Bell Laboratories Optical device including a grating
SE468188B (sv) * 1991-04-08 1992-11-16 Stiftelsen Inst Foer Mikroelek Metod foer inkoppling av straalning i en infraroeddetektor, jaemte anordning
JPH06163954A (ja) * 1992-11-20 1994-06-10 Sanyo Electric Co Ltd 結晶系シリコン薄膜の形成方法及びこの膜を用いた光起電力装置
DE4327068A1 (de) * 1993-08-12 1995-02-16 Bayerische Motoren Werke Ag Ventiltrieb einer Brennkraftmaschine
FR2729789B1 (fr) * 1993-09-10 1998-03-20 Thomson Csf Detecteur a puits quantique et procede de realisation

Also Published As

Publication number Publication date
DE69710170D1 (de) 2002-03-14
FR2757564A1 (fr) 1998-06-26
SG79954A1 (en) 2001-04-17
FR2757564B1 (fr) 1999-03-26
DE69710170T2 (de) 2002-11-28
EP0849437A1 (de) 1998-06-24

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