EP0029254B1 - Ventilspiel-Einstellvorrichtung für Brennkraftmaschinen - Google Patents

Ventilspiel-Einstellvorrichtung für Brennkraftmaschinen Download PDF

Info

Publication number
EP0029254B1
EP0029254B1 EP80107203A EP80107203A EP0029254B1 EP 0029254 B1 EP0029254 B1 EP 0029254B1 EP 80107203 A EP80107203 A EP 80107203A EP 80107203 A EP80107203 A EP 80107203A EP 0029254 B1 EP0029254 B1 EP 0029254B1
Authority
EP
European Patent Office
Prior art keywords
opening
retaining spring
valve
portions
annular groove
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
Application number
EP80107203A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0029254A1 (de
Inventor
Josef Ing.-Grad. Fritzenwenger
Richard Ing.-Grad. Henning
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0029254A1 publication Critical patent/EP0029254A1/de
Application granted granted Critical
Publication of EP0029254B1 publication Critical patent/EP0029254B1/de
Expired legal-status Critical Current

Links

Images

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
    • F01L1/205—Adjusting or compensating clearance by means of shims or the like

Definitions

  • the invention relates to a valve lash adjuster of the type according to the preamble of claim 1.
  • the tappet on its inner end face has guides aligned with the opening, between which the adjusting element with the retaining spring is inserted. These guides are intended to prevent radial movements transverse to the direction of insertion of the adjusting element.
  • the adjusting element To rest on these guide surfaces, the adjusting element has corresponding surfaces arranged parallel to one another. In the area of the annular groove, the adjusting element has an approximately rectangular cross section so that it can be inserted into the retaining spring made of sheet metal.
  • the adjusting element is designed with a smooth-cylindrical outer surface.
  • the retaining spring rests on this smooth surface exclusively by frictional engagement, so that during operation there is a risk of the retaining spring sliding off and then the adjusting element migrating.
  • a relatively stiff and therefore heavy design of the retaining spring is therefore necessary.
  • the invention has for its object to provide a valve lash adjuster of the type according to the preamble of claim 1, in which the adjusting element is inexpensive to manufacture and is secured in position by means of the retaining spring in the region of the valve stem end. In addition, vibrations of the section of the retaining spring projecting into the opening should be excluded.
  • the invention solves this problem by the characterizing features of claim 1.
  • the adjusting element can be manufactured as a simple turned part without subsequent further processing of the annular groove and the peripheral surfaces, no special guide surfaces are required on the inner end face of the tappet, and the retaining spring can e.g. B. formed from spring steel wire or sheet.
  • the special support of the retaining spring in the opening prevents damage to the tappet and the retaining spring itself.
  • a valve lash adjusting device for an internal combustion engine not shown, with a tappet 1 as a transmission member between a cam 2 and a valve stem end 3 consists of a retaining spring 4 and an adjusting element 5 held by the latter.
  • the adjusting element 5 lies on the one hand on the inside of the cup tappet 1 and on the other hand on the end face 6 of the valve stem end 3 and, including an annular groove 7, has a circular cross section.
  • the tappet 1 is provided with a lateral opening 8 for installing and removing the setting element 5 or the retaining spring 4 with the setting element 5.
  • the arcuate leg sections 9 merge into radial sections 11, which extend into the opening 8 of the tappet 1.
  • the retaining spring 4 is enclosed by a molded part 12 which occupies the entire height of the opening 8.
  • the molded part 12 also bears against lateral wall sections 13 of a narrower part 14 of the opening 8 which extends downwards in the middle, in order to prevent movements of the retaining spring 4 in the circumferential direction.
  • the molded part 12 is made of injection-molded plastic and is provided on one side with a groove 15, which makes it easier to remove the retaining spring 4.
  • two further, diametrically opposed circular-arc-shaped leg sections 16 of the retaining spring 4 are arranged concentrically with the former.
  • the other leg sections 16 lie under prestress on the valve stem end 3. They are slightly bent apart at their ends facing away from the opening 8 in order to make it easier to push them onto the valve stem end 3.
  • the leg sections 16 merge into radial sections 17 on the side facing the opening 8, which reach into the opening 8.
  • the radial sections 11 and 17 are connected to one another within the molded part 12 by means of two parallel 180 ° bends 18 arranged next to one another.
  • the retaining spring 4 with the adjusting element 5 using a tool engaging in the lateral groove 15 of the molded part 12, for. B. screwdriver, pulled out radially from the tappet 1, the adjusting element 5 pressed out of its holder between the arcuate leg sections 9 and the desired adjusting element 5 clipped into the position.
  • the retaining spring 4 with the new setting element 5 is then pushed back into the opening 8 of the tappet 1. Due to the leg sections 16 abutting the valve stem end 3, the adjusting element 5 is always arranged concentrically with the valve stem end 3. Since the molded part 12 enclosing the retaining spring 4 in the region of the opening 8 occupies the entire height of this opening 8, no vibrations can occur in this region of the retaining spring 4 even at very high speeds.
  • the holding spring 104 has only two radial sections 111 which extend from the adjusting element 105 in the direction of the opening 108. Therefore, the arcuate leg sections 109 and 116 arranged on top of each other on one side of the valve stem end 103 are connected to each other by cranked and bent intermediate sections 119.
  • the intermediate sections 119 are designed to be relatively long in order to prevent the circular-arc-shaped leg sections 109, which carry the setting element 5, and the circular-arc-shaped leg sections 116, which bear against the valve stem end 103, from influencing one another, in particular during assembly and disassembly.
  • the leg sections 109 carrying the adjusting element 105 almost completely enclose the same on the side facing away from the opening 108, so that the adjusting element 105 is securely held in place when the retaining spring 104 is inserted and removed.
  • the opening 108 has a narrower part 114 which extends downwards in the middle and has side wall sections 113, on the lower end of which grooves 120 are machined in a plane perpendicular to the valve stem.
  • the retaining spring 104 engages with its interconnected radial sections 111 under prestress in the grooves 120.
  • the retaining spring of the second embodiment is handled like that of the first described embodiment.
  • Both exemplary embodiments have in common their simple and light structure and the advantage that adjusting elements 5 and 105 can be used, which can be produced inexpensively as simple turned parts and that no lateral guide surfaces for the adjusting element are required on the inner end face of the tappet 1 or 101 .
  • the retaining spring 4 or 104 due to the design of the retaining spring 4 or 104 in the region of the opening 8 or 108, no vibrations of the retaining spring 4 or 104 can occur during operation.
  • the retaining spring can also be fixed radially on the lateral edges of the opening.
  • the leg sections surrounding the adjusting element are connected to one another on the side of the valve stem end facing away from the opening, and the radial sections end individually in the region of the opening, where they grip around their lateral edges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP80107203A 1979-11-20 1980-11-19 Ventilspiel-Einstellvorrichtung für Brennkraftmaschinen Expired EP0029254B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2946682A DE2946682C2 (de) 1979-11-20 1979-11-20 Vorrichtung zum Einstellen des Ventilspiels von Brennkraftmaschinen
DE2946682 1979-11-20

Publications (2)

Publication Number Publication Date
EP0029254A1 EP0029254A1 (de) 1981-05-27
EP0029254B1 true EP0029254B1 (de) 1983-02-09

Family

ID=6086402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107203A Expired EP0029254B1 (de) 1979-11-20 1980-11-19 Ventilspiel-Einstellvorrichtung für Brennkraftmaschinen

Country Status (3)

Country Link
EP (1) EP0029254B1 (ja)
JP (2) JPS5677506A (ja)
DE (2) DE2946682C2 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118776A1 (de) * 1991-06-07 1992-12-10 Schaeffler Waelzlager Kg Mechanischer ventilstoessel fuer eine brennkraftmaschine
JPH056106U (ja) * 1991-07-08 1993-01-29 日鍛バルブ株式会社 内燃機関用バルブリフター
US5904123A (en) * 1997-05-26 1999-05-18 Ina Walzlager Schaeffler Ohg Mechanical valve tappet
AUPP962299A0 (en) * 1999-04-08 1999-04-29 Hadaway, Robert John An improved method of setting valve clearances on over-head camshaft internal-combustion-engines

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1235954A (fr) * 1959-02-07 1960-07-15 Simca Perfectionnements apportés au réglage du jeu des soupapes dans les moteurs à combustion interne
FR1271692A (fr) * 1960-08-05 1961-09-15 Andre Citroen Dispositif de rattrapage de jeu pour les commandes de soupapes des moteurs à combustion
FR81788E (fr) * 1962-06-18 1963-11-08 Citroen Sa Andre Dispositif de rattrapage de jeu pour les commandes de soupapes des moteurs à combustion
FR89780E (fr) * 1966-03-22 1967-08-18 Simca Automobiles Sa Perfectionnements apportés au réglage du jeu des soupapes dans les moteurs à combustion interne
AT295927B (de) * 1967-04-05 1972-01-25 Ustav Pro Vyzkum Motorovych Vo Einrichtung zur Einstellung des Ventilspiels bei Brennkraftmaschinen
JPS5018770Y2 (ja) * 1971-01-28 1975-06-07
JPS5242263U (ja) * 1975-09-19 1977-03-25

Also Published As

Publication number Publication date
JPS5677506A (en) 1981-06-25
EP0029254A1 (de) 1981-05-27
DE2946682C2 (de) 1982-09-09
JPS5988203U (ja) 1984-06-14
DE3061923D1 (en) 1983-03-17
DE2946682A1 (de) 1981-05-21

Similar Documents

Publication Publication Date Title
DE69403366T2 (de) Ventilstössel mit Rolle
EP0267352B1 (de) Vorrichtung zur wiederholbaren, hochgenauen Festlegung der relativen räumlichen Lage eines ersten Gegenstandes in Bezug auf zweite Gegenstände
EP0610726A1 (de) Haltevorrichtung
AT504693B1 (de) Selbsttätiges ringventil
EP0903518A2 (de) Schaltvorrichtung für ein Wechselgetriebe von Kraftfahrzeugen
DE3702376C2 (ja)
EP0029254B1 (de) Ventilspiel-Einstellvorrichtung für Brennkraftmaschinen
DE4428385B4 (de) Ventilkörper
DE3532975A1 (de) Teilbelag-scheibenbremse
DE3212785C2 (de) Offenend-spinnrotor
DE2752927A1 (de) Anlassmotor
EP0516962B1 (de) Mechanischer Ventilstössel für eine Brennkraftmaschine
DE3224762A1 (de) Einspritzpumpen-nockenwelle
DE69102759T2 (de) Verfahren und Vorrichtung zum Zusammenbauen von zwei ineinander zu schachtelnden Teilen, wie z.B. ein Ventil und ein Federteller.
DE19730201A1 (de) Betätigungshebel für einen Ventiltrieb einer Brennkraftmaschine
DE4442720C2 (de) Rollenhebel aus einem Gußwerkstoff
EP0266685A1 (de) Sich selbsttätig hydraulisch einstellender Ventilstössel
DE10049699A1 (de) Anker für eine elektrische Maschine sowie Verfahren zu dessen Herstellung
DE2735100A1 (de) Axialschub-sicherungsanordnung
EP0608518B1 (de) Vorrichtung zum Entgraten von Formen und Kernen
DE19539266A1 (de) Ventilschaftdichtung für Verbrennungskraftmaschinen
CH692487A5 (de) Hydraulische Spannvorrichtung für die lösbare Präzisionshalterung von Maschinenelementen.
DE1577100A1 (de) Verfahren zur Herstellung von Kurbelwellen aus Teilstuecken
EP0442100B1 (de) Lagerbock für Wellenlager
DE3023473A1 (de) Kurbelwelle, insbesondere fuer feinwerktechnische geraete oder maschinen

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19810603

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 3061923

Country of ref document: DE

Date of ref document: 19830317

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19841117

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19841130

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT