EP1167701B1 - Internal combustion engine valve lock assembly - Google Patents

Internal combustion engine valve lock assembly Download PDF

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Publication number
EP1167701B1
EP1167701B1 EP01111610A EP01111610A EP1167701B1 EP 1167701 B1 EP1167701 B1 EP 1167701B1 EP 01111610 A EP01111610 A EP 01111610A EP 01111610 A EP01111610 A EP 01111610A EP 1167701 B1 EP1167701 B1 EP 1167701B1
Authority
EP
European Patent Office
Prior art keywords
valve
spring
pressure plate
plate
stem
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
EP01111610A
Other languages
German (de)
French (fr)
Other versions
EP1167701A1 (en
Inventor
Wolfgang Semet
Helmut Leyhe
Timo Klees
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 EP1167701A1 publication Critical patent/EP1167701A1/en
Application granted granted Critical
Publication of EP1167701B1 publication Critical patent/EP1167701B1/en
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
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance

Definitions

  • the invention relates to a valve holder for a lift valve of an internal combustion engine according to the mentioned in the preamble of claim 1. Art.
  • the invention is based on German Offenlegungsschrift 20 14 575.
  • a valve control arrangement for internal combustion engines with an overhead Camshaft shown.
  • the cam of a rotating camshaft actuated at this arrangement, a rocker arm, in turn, the cylinder head side in a ball joint is stored.
  • the ball joint side remote from the end of the rocker arm transfers the lifting movement via a pressure plate with side cheeks on Lift valve.
  • the valve stem of the lift valve is controlled by valve cone elements against the Spring force of valve springs, which press against the spring plate, held in this.
  • the spring plate encloses the pressure element between the rocker arm and the valve stem is arranged radially. Part of the cheeks of the printing plate are in Closing direction of the globe valve from the hole in the spring plate, in which they are arranged is out.
  • a disadvantage of this arrangement is the high design of the valve disk and the Pressure plate and thus caused the large moving mass of the valve train.
  • the object of the invention is a flatter design of valve plate and pressure plate to minimize the moving mass of the valve train to realize, with a tilting the pressure plate during assembly of the valve train parts as well as during service work is safely prevented.
  • This object is achieved by the characterizing part of the claim 1 solved.
  • This arrangement shortens the length of the valve disk in the closing direction the lift valve optimal, which space is gained and the moving Masses are reduced in the valve train. Furthermore, falling out of the printing plate prevented by tilting in the hole. Valve train or engine damage due to fallen printing plates are due to the engine compartment reliably prevented.
  • Figure 1 shows a sectional view of a valve holder 1.
  • a pressure plate 6 At the end of the valve stem 2 is a pressure plate 6.
  • she is in a, to the conical bore 8 coaxial cylindrical bore 9, the inner diameter of which is greater than the largest inner diameter of the conical Bore 8 is held radially.
  • On the outer circumference of the valve stem 2 are three Ring grooves 10, 10 'incorporated radially to a Hubventilachse 11.
  • valve stem 2 in the conical bore. 8 from the side facing away from the pressure plate 6 introduced. Subsequently, will the valve plate 4 with a special tool against the spring force of the valve spring. 5 pressed, so that the valve stem 2 at least by its guide length in the spring plate 4 protrudes beyond the edge of the bore 9.
  • the two valve cone elements 3, 3 ' inserted into the annular grooves 10, 10' on the valve stem 2. Then the contact pressure of the special tool is reduced against the spring force, so that the valve stem 2 with the two valve cone elements 3, 3 'with their slide conical outer circumference in the conical bore 8. Due to the Spring force of the valve spring 5 now wedge the valve cone elements 3, 3 'in the conical bore 8.
  • valve cone elements 3, 3 'and the pressure plate 6 reliably prevents them from tilting.
  • the number of annular grooves 10 on the valve stem 2, in which the valve cone elements 3, 3 'engage vary. Likewise more than two valve cone elements 3, 3 'to be installed. For the easier and better Mounting the pressure plate 6 can slip on the cylindrical bore 9 are attached.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

Die Erfindung betrifft eine Ventilhalterung für ein Hubventil einer Brennkraftmaschine gemäß der im Oberbegriff des Patentanspruchs 1 genannten Art.The invention relates to a valve holder for a lift valve of an internal combustion engine according to the mentioned in the preamble of claim 1. Art.

Die Erfindung geht von der deutschen Offenlegungsschrift 20 14 575 aus. In dieser ist eine Ventilsteuerungsanordnung für Brennkraftmaschinen mit einer oben liegenden Nockenwelle dargestellt. Der Nocken einer drehenden Nockenwelle betätigt bei dieser Anordnung einen Kipphebel, der seinerseits zylinderkopfseitig in einem Kugelgelenk gelagert ist. Das der Kugelgelenkseite abgewandte Ende des Kipphebels überträgt die Hubbewegung über eine Druckplatte mit seitlichen Wangen auf ein Hubventil. Der Ventilschaft des Hubventils wird von Ventilkegelelementen gegen die Federkraft von Ventilfedern, die gegen den Federteller drücken, in diesem gehalten. Der Federteller umschließt das Druckelement, das zwischen Kipphebel und Ventilschaft angeordnet ist, radial. Ein Teil der Wangen der Druckplatte stehen in Schließrichtung des Hubventils aus der Bohrung im Federteller, in die sie angeordnet ist, heraus.The invention is based on German Offenlegungsschrift 20 14 575. In this is a valve control arrangement for internal combustion engines with an overhead Camshaft shown. The cam of a rotating camshaft actuated at this arrangement, a rocker arm, in turn, the cylinder head side in a ball joint is stored. The ball joint side remote from the end of the rocker arm transfers the lifting movement via a pressure plate with side cheeks on Lift valve. The valve stem of the lift valve is controlled by valve cone elements against the Spring force of valve springs, which press against the spring plate, held in this. The spring plate encloses the pressure element between the rocker arm and the valve stem is arranged radially. Part of the cheeks of the printing plate are in Closing direction of the globe valve from the hole in the spring plate, in which they are arranged is out.

Nachteilig bei dieser Anordnung ist die hohe Bauform von dem Ventilteller und der Druckplatte und dadurch bedingt die große bewegte Masse des Ventiltriebs. A disadvantage of this arrangement is the high design of the valve disk and the Pressure plate and thus caused the large moving mass of the valve train.

Weiterhin ist allgemein bekannt, dass derartige Druckplatten gleichzeitig als Ventilspielausgleichselemente verwendet werden.Furthermore, it is generally known that such pressure plates simultaneously as valve clearance compensation elements be used.

Aufgabe der Erfindung ist es, eine flachere Bauform von Ventilteller und Druckplatte zur Minimierung der bewegten Masse des Ventiltriebs zu realisieren, wobei ein Verkippen der Druckplatte bei der Montage der Ventiltriebsteile sowie bei Servicearbeiten sicher verhindert ist.The object of the invention is a flatter design of valve plate and pressure plate to minimize the moving mass of the valve train to realize, with a tilting the pressure plate during assembly of the valve train parts as well as during service work is safely prevented.

Diese Aufgabe wird erfindungsgemäß durch das Kennzeichen des Patentanspruchs 1 gelöst. Diese Anordnung verkürzt die Baulänge des Ventiltellers in Schließrichtung des Hubventils optimal, wodurch Bauraum gewonnen wird und die bewegten Massen im Ventiltrieb reduziert sind. Ferner ist ein Herausfallen der Druckplatte durch Verkippen in der Bohrung verhindert. Ventiltriebs- oder Motorschäden, die auf heruntergefallene Druckplatten in den Motorinnenraum zurückzuführen sind, werden zuverlässig verhindert.This object is achieved by the characterizing part of the claim 1 solved. This arrangement shortens the length of the valve disk in the closing direction the lift valve optimal, which space is gained and the moving Masses are reduced in the valve train. Furthermore, falling out of the printing plate prevented by tilting in the hole. Valve train or engine damage due to fallen printing plates are due to the engine compartment reliably prevented.

Fertigungstoleranzen für Ventiltriebsbauteile, innerhalb derer ein Verkippen der Druckplatte verhindert ist, sind nach Anspruch 2 fertigungstechnisch einfach einzuhalten.Manufacturing tolerances for valve train components, within which a tilting of the Pressure plate is prevented, according to claim 2 manufacturing technology easy to comply.

Die Verwendung der Druckplatte als Ventilspielausgleichselement gemäß Anspruch 3 stellt eine kostengünstige, einfach zu fertigende und robuste Lösung zum Ausgleich des Ventilspiels dar.The use of the pressure plate as a valve clearance compensation element according to claim Figure 3 provides a cost effective, easy to manufacture and robust solution for compensation the valve clearance is.

Vorteilhaft nach Anspruch 4 wird ein Ausbau oder ein Wechsel der Druckplatte aus dem Federteller erleichtert.Advantageously according to claim 4 is a removal or a change of the pressure plate relieved the spring plate.

Im Folgenden wird die Erfindung anhand eines bevorzugten Ausführungsbeispieles erläutert.

Fig. 1:
Schnittdarstellung in der Hubventilachse einer Ventilhalterung
In the following the invention will be explained with reference to a preferred embodiment.
Fig. 1:
Sectional view in the Hubventilachse a valve holder

Figur 1 zeigt eine Schnittdarstellung einer Ventilhalterung 1. An einem Ventilschaft 2 sind zwei Ventilkegelelemente 3, 3' am Außenumfang des Ventilschaftes 2 angeordnet. Der Ventilschaft 2 und die Ventilkegelelemente 3, 3' sind in einer konischen Bohrung 8 in einem Federteller 4 gegen die Ventilfederkraft einer Ventilfeder 5 gegeneinander verkeilt. Am Ende des Ventilschaftes 2 liegt eine Druckplatte 6 auf. Sie ist in einer, zur konischen Bohrung 8 koaxial angeordneten zylindrischen Bohrung 9, deren Innendurchmesser größer als der größte Innendurchmesser der konischen Bohrung 8 ist, radial gehalten. Am Außenumfang des Ventilschaftes 2 sind drei Ringnuten 10, 10' radial zu einer Hubventilachse 11 eingearbeitet. In diese greifen die zwei Ventilkegelelemente 3, 3' mit drei, an deren Innenumfang angeformten Federn ein. Durch diesen Eingriff ist ein Formschluß zwischen dem Ventilschaft 2 und den Ventilkegelelementen 3, 3' gewährleistet. Die Ventilkegelelemente 3, 3' haben eine konische Außenform. Der große Außendurchmesser befindet sich auf der Seite des Ventilschaftendes. Die Ventilkegelelemente 3, 3' ragen fast bis auf die Höhe des Ventilschaftendes, berühren jedoch die Druckplatte 6 nicht. Somit ist in der zusammengebauten Ventilhalterung 1 immer ein Ringspalt 7 zwischen der Druckplatte 6 und den Ventilkegelelementen 3, 3' vorhanden.Figure 1 shows a sectional view of a valve holder 1. On a valve stem 2, two valve cone elements 3, 3 'are arranged on the outer circumference of the valve stem 2. The valve stem 2 and the poppet elements 3, 3 'are in a conical Bore 8 in a spring plate 4 against the valve spring force of a valve spring 5 against each other wedged. At the end of the valve stem 2 is a pressure plate 6. she is in a, to the conical bore 8 coaxial cylindrical bore 9, the inner diameter of which is greater than the largest inner diameter of the conical Bore 8 is held radially. On the outer circumference of the valve stem 2 are three Ring grooves 10, 10 'incorporated radially to a Hubventilachse 11. Grab these the two valve cone elements 3, 3 'with three, integrally formed on the inner circumference Feathers. By this engagement is a positive connection between the valve stem. 2 and the valve cone elements 3, 3 'guaranteed. The poppet elements 3, 3 ' have a conical outer shape. The big outside diameter is on the side of the valve stem end. The poppet elements 3, 3 'protrude almost to the height of the valve stem end, but do not touch the pressure plate 6. Thus is in the assembled valve holder 1 always an annular gap 7 between the Pressure plate 6 and the valve cone elements 3, 3 'present.

Um lokale Temperaturerhöhungen in der Druckplatte 6 durch den Anpreßdruck eines nicht dargestellten Nockens oder Kipphebels während des Betriebs der Brennkraftmaschine zu vermeiden, muß diese mit einem radialen Spiel in dem Ventilteller 4 auf dem Ventilschaft 2 aufliegen. Das radiale Spiel ermöglicht ihr eine Drehung um die Hubventilachse 11. Somit wird eine gleichmäßigere Temperaturverteilung im Betrieb sichergestellt.To local temperature increases in the pressure plate 6 by the contact pressure of a not shown cam or rocker arm during operation of the internal combustion engine To avoid this, this must be with a radial clearance in the valve disk 4 rest on the valve stem 2. The radial play allows her a turn around the Hubventilachse 11. Thus, a more uniform temperature distribution in Operation ensured.

Bei der Montage der Anordnung wird der Ventilschaft 2 in die konische Bohrung 8 von der, von der Druckplatte 6 abgewandten Seite eingeführt. Anschließend wird der Ventilteller 4 mit einem Spezialwerkzeug gegen die Federkraft der Ventilfeder 5 gedrückt, so dass der Ventilschaft 2 mindestens um seine Führungslänge im Federteller 4 über den Rand der Bohrung 9 hinausragt. Im nächsten Schritt werden die zwei Ventilkegelelemente 3, 3' in die Ringnuten 10, 10' am Ventilschaft 2 eingesetzt. Dann wird die Anpreßkraft des Spezialwerkzeuges gegen die Federkraft verringert, so dass der Ventilschaft 2 mit den zwei Ventilkegelelementen 3, 3' mit deren konischen Außenumfang in die konische Bohrung 8 hineingleiten. Aufgrund der Federkraft der Ventilfeder 5 verkeilen sich nun die Ventilkegelelemente 3, 3' in der konischen Bohrung 8. Im letzten Arbeitsschritt wird noch die Druckplatte 6, ein Ventilspielausgleichselement, in die zylindrische Bohrung 9 eingesetzt.When mounting the assembly, the valve stem 2 in the conical bore. 8 from the side facing away from the pressure plate 6 introduced. Subsequently, will the valve plate 4 with a special tool against the spring force of the valve spring. 5 pressed, so that the valve stem 2 at least by its guide length in the spring plate 4 protrudes beyond the edge of the bore 9. In the next step, the two valve cone elements 3, 3 'inserted into the annular grooves 10, 10' on the valve stem 2. Then the contact pressure of the special tool is reduced against the spring force, so that the valve stem 2 with the two valve cone elements 3, 3 'with their slide conical outer circumference in the conical bore 8. Due to the Spring force of the valve spring 5 now wedge the valve cone elements 3, 3 'in the conical bore 8. In the last step, the pressure plate 6, a valve clearance compensation element, inserted into the cylindrical bore 9.

Der geringe Abstand zwischen den Ventilkegelelementen 3, 3' und der Druckplatte 6 verhindert zuverlässig ein Kippen dieser.The small distance between the valve cone elements 3, 3 'and the pressure plate 6 reliably prevents them from tilting.

In weiteren Ausgestaltungsvarianten kann die Anzahl der Ringnuten 10 am Ventilschaft 2, in die die Ventilkegelelemente 3, 3' eingreifen, variieren. Ebenso können mehr als zwei Ventilkegelelemente 3, 3' verbaut sein. Zur einfacheren und besseren Montage der Druckplatte 6 kann eine Schlupffase an der zylindrischen Bohrung 9 angebracht werden. In further embodiment variants, the number of annular grooves 10 on the valve stem 2, in which the valve cone elements 3, 3 'engage, vary. Likewise more than two valve cone elements 3, 3 'to be installed. For the easier and better Mounting the pressure plate 6 can slip on the cylindrical bore 9 are attached.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Ventilhalterungvalve holder
22
Ventilschaftvalve stem
3, 3'3, 3 '
VentilkegelelementPoppet element
44
Federtellerspring plate
55
Ventilfedervalve spring
66
Druckplatteprinting plate
77
Ringspaltannular gap
88th
Konische BohrungConical bore
99
Zylindrische BohrungCylindrical bore
10, 10'10, 10 '
Ringnutring groove
1111
HubventilachseHubventilachse

Claims (4)

  1. A valve holder (1) for a stem (2) of a gate valve of an internal combustion engine, the valve stem being held in a spring plate (4) by at least two valve-cone elements (3, 3') which are disposed axially between the valve stem (2) and the spring plate (4) and [act upon] it in the axial direction against the force of at least one valve spring (5) disposed coaxially around the gate valve, the spring force acting axially on the spring plate (4), and by a pressure plate (6) which rests in the radial direction on the valve stem (2) and is radially surrounded by the spring plate (4) and disposed above the valve-cone elements (3, 3'),
    characterised in that the valve-cone elements (3, 3') are prolonged up to the level of the end of the valve stem.
  2. A valve holder according to claim 1, characterised in that the maximum distance of the pressure plate (6) from the top end of the valve-cone element (3) is 0.5 mm.
  3. A valve holder according to claim 1, characterised in that the pressure plate (6) is a valve clearance compensating element.
  4. A valve holder according to at least one of the preceding claims, characterised in that the pressure plate (6) projects in the axial direction beyond the spring plate (4).
EP01111610A 2000-06-30 2001-05-12 Internal combustion engine valve lock assembly Expired - Lifetime EP1167701B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10031973 2000-06-30
DE10031973A DE10031973C2 (en) 2000-06-30 2000-06-30 Valve holder for a lift valve of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1167701A1 EP1167701A1 (en) 2002-01-02
EP1167701B1 true EP1167701B1 (en) 2005-03-16

Family

ID=7647399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01111610A Expired - Lifetime EP1167701B1 (en) 2000-06-30 2001-05-12 Internal combustion engine valve lock assembly

Country Status (2)

Country Link
EP (1) EP1167701B1 (en)
DE (2) DE10031973C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100001224A1 (en) * 2008-07-02 2010-01-07 Edgar James R Valve Spring Retainer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR931101A (en) * 1945-07-23 1948-02-13 Eaton Mfg Co Improvements to a valve for an internal combustion engine
US2851022A (en) * 1954-11-09 1958-09-09 Gen Motors Corp Poppet valve operating mechanism
US2827891A (en) * 1954-12-16 1958-03-25 Herbert H Engemann Valve tip construction
DE2014575A1 (en) 1970-03-26 1971-10-14 Daimler Benz AG, 7000 Stuttgart Unterturkheim Valve control arrangement
GB2186057A (en) * 1986-01-31 1987-08-05 Robert Anthony Furnivall Internal combustion engine valve assemblies
DE3614258A1 (en) * 1986-04-26 1987-10-29 Motomak HYDRAULIC VALVE COMPENSATION COMPENSATION DEVICE FOR COMBUSTION ENGINES
DE19548290A1 (en) * 1995-12-22 1997-07-03 Audi Ag Device for turning valve of internal combustion engine

Also Published As

Publication number Publication date
DE10031973A1 (en) 2002-02-28
DE50105590D1 (en) 2005-04-21
DE10031973C2 (en) 2002-11-21
EP1167701A1 (en) 2002-01-02

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