DE3329418A1 - Means of sealing a cylinder head cover with respect to the cylinder head of an internal combustion engine - Google Patents

Means of sealing a cylinder head cover with respect to the cylinder head of an internal combustion engine

Info

Publication number
DE3329418A1
DE3329418A1 DE19833329418 DE3329418A DE3329418A1 DE 3329418 A1 DE3329418 A1 DE 3329418A1 DE 19833329418 DE19833329418 DE 19833329418 DE 3329418 A DE3329418 A DE 3329418A DE 3329418 A1 DE3329418 A1 DE 3329418A1
Authority
DE
Germany
Prior art keywords
cylinder head
seal
head cover
sealing
internal combustion
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.)
Granted
Application number
DE19833329418
Other languages
German (de)
Other versions
DE3329418C2 (en
Inventor
Rudolf 7000 Stuttgart Blaha
Ulrich 7140 Ludwigsburg Conrad
Günter 7130 Mühlacker Schäfer
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19833329418 priority Critical patent/DE3329418C2/en
Publication of DE3329418A1 publication Critical patent/DE3329418A1/en
Application granted granted Critical
Publication of DE3329418C2 publication Critical patent/DE3329418C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention describes a gasket for a cylinder head cover on the cylinder head by means of an elastomer seal, the seal being pressed at a prescribed pressure against an aligning surface on the cylinder head by tightening the cylinder head cover against stops on the cylinder head side by means of screw elements. In order to achieve dry fixing points for this, the screw elements together with the stops are incorporated into the seal and are enclosed by this on both sides.

Description

Abdichtung einer Zylinderkopfhaube Sealing of a cylinder head cover

gegenüber dem Zylinderkopf einer Brennkraftmaschine Die Erfindung bezieht sich auf eine Abdichtung gemäß Oberbegriff des Patentanspruches 1. compared to the cylinder head of an internal combustion engine The invention relates to a seal according to the preamble of claim 1.

Derartige Abdichtungen von Zylinderkopfhauben werden bei in Serienfahrzeugen der Anmelderin eingebauten Brennkraftmaschinen bereits verwendet und sind dem Werkstatthandbuch 1975, Motoren Bd.2, S. 990/1-990/3 zu entnehmen.Such seals of cylinder head covers are used in series vehicles internal combustion engines installed by the applicant have already been used and are in the workshop manual 1975, Motoren Vol. 2, pp. 990 / 1-990 / 3 can be found.

Die Befestigung der Zylinderkopfhaube am Zylinderkopf erfolgt über Stehbolzen, die gegenüber dem Dichtungsverlauf, seitlich versetzt in den Zylinderkopf eingeschraubt sind. Die Stehbolzen haben einen Bund, der als Anschlag dient gegen den die Zylinderkopfhaube verspannt wird.The cylinder head cover is attached to the cylinder head using Stud bolts that are laterally offset in relation to the course of the gasket in the cylinder head are screwed in. The stud bolts have a collar that serves as a stop against which the cylinder head cover is tensioned.

Die Dicke des Bundes ist dabei so bemessen, daß bei verspannter Zylinderkopfhaube die weiche Elastomer-Dichtung mit einer festgelegten Vorspannung gegen die Dichtfläche am Zylinderkopf gepreßt wird.The thickness of the collar is so dimensioned that when the cylinder head cover is clamped the soft elastomer seal with a defined preload against the sealing surface is pressed on the cylinder head.

Bei vor der Dichtung auf der Naßseite ange.ordneten Befestigungselementen besteht das Problem, daß Schmieröl aus dem Ventilraum über die Befestigungselemente nach außen gelangen kann.With fasteners arranged in front of the seal on the wet side there is a problem that lubricating oil from the valve chamber via the fastening elements can get to the outside.

Bei auf der Trockenseite angeordneten Befestigungselementen sind an der Zylinderkopfhaube seitlich vorbauende Stege erforderlich, die den motornahen Anbau von Zusatzeinrichtungen beeinträchtigen.For fasteners arranged on the dry side, are on the cylinder head cover laterally built-in webs are required, which are close to the engine Impair the addition of additional equipment.

Der Erfindung liegt die Aufgabe zugrunde, die bekannte Abdichtung so zu verbessern, daß die geschilderten Nachteile vermieden werden und darüberhinaus eine platzsparende Anordnung der Befestigungselemente bei günstiger Dichtkraftverteilung und vereinfachter Montage erreicht wird.The invention is based on the object of the known seal to improve so that the disadvantages described are avoided and beyond a space-saving arrangement of the fastening elements with favorable sealing force distribution and simplified assembly is achieved.

Die Aufgabe ist erfindungsgemäß durch die imskennzeichnenden Teil des Patentanspruches 1 angegebenen Merkmale gelöst.The object is according to the invention by the characterizing part of claim 1 specified features solved.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß kein Schmieröl über die Befestigungsstellen nach außen gelangen kann, daß durch die Anordnung der Befestigungsstellen im Dichtungsverlauf Platz gespart wird, und daß die Dichtkraft gleichmäßig auf die Dichtung verteilt werden kann.The advantages achieved with the invention are in particular: that no lubricating oil can get to the outside through the fastening points that through the arrangement of the fastening points in the Seal course place is saved, and that the sealing force can be evenly distributed on the seal can.

Weitere Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further refinements of the invention are attached to the subclaims remove.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt und wird im folgenden näher beschrieben.An exemplary embodiment of the invention is shown in the drawing and is described in more detail below.

Die Zeichnung zeigt einen Querschnitt im Bereich der Abdichtung zwischen Zylinderkopfhaube 1 und Zylinderkopf 2 einer Brennkraftmaschine.The drawing shows a cross section in the area of the seal between Cylinder head cover 1 and cylinder head 2 of an internal combustion engine.

Zur Abdichtung ist am Haubenrand 3 eine weiche Elastomer-Dichtung 4 angeordnet, die ein u-förmiges Profil hat und mit den Schenkelseiten 5 selbsthaftend am Haubenrand 3 gehalten ist, während der unten gelegene Stegteil 6 mittels Schraubelementen 7 gegen die zylinderkopfseitige Dichtfläche 8 gepreßt wird.A soft elastomer seal is provided on the edge of the hood 3 for sealing 4 arranged, which has a U-shaped profile and with the leg sides 5 self-adhesive is held on the hood edge 3, while the lower web part 6 by means of screw elements 7 is pressed against the sealing surface 8 on the cylinder head side.

An den Schraubstellen ist die Zylinderkopfhaube 1 mit einem verbreiterten Haubenrand 3a ausgeführt, wobei die Dichtung 4 entsprechend dem Verlauf des Haubenrandes 3a ausgebildet ist und die Schraubstellenbeidseitig umgibt. Die so in den Verlauf der Dichtung 4 einbezogenen Schraubelemente 7 sind gegenüber dem Ventilraum abgedichtet und werden von oben durch eine abgestufte Durchgangsbohrung 9 im verbreiterten Haubenrand 3a und eine Bohrung 10 in der Dichtung 4 in eine Gewindebohrung 11 des Zylinderkopfes 2 eingeschraubt. Vom Haubenrand 3 aus ist in den größeren Bohrungsabschnitt der Durchgangsbohrung 9 eine aus druckfestem Werkstoff bestehende Bundhülse 12 unverlierbar eingesetzt, die den Schraubenschaft konzentrisch umgibt. Der Bund 13 ist passend in die Bohrung 10 eingesetzt und dient als Anschlag gegen den die Zylinderkopfhaube 1 mittels der Schraubelemente 7 verspannbar ist. Die Dicke des Bundes 13 ist dabei so bemessen, daß bei verspannter Zylinderkopfhaube 1 die Dichtung mit einer festgelegten Vorspannung gegen die Dichtfläche 6 gedrückt wird.The cylinder head cover 1 is widened at the screw points Executed hood edge 3a, the seal 4 corresponding to the course of the hood edge 3a and surrounds the screw points on both sides. The so in the course the screw elements 7 included in the seal 4 are sealed off from the valve chamber and are from above through a stepped through hole 9 in the widened edge of the hood 3a and a hole 10 in the Seal 4 in a threaded hole 11 of the cylinder head 2 is screwed in. From the hood edge 3 is in the larger Bore section of the through hole 9 consists of a pressure-resistant material Collar sleeve 12 used captive, which surrounds the screw shaft concentrically. The collar 13 is inserted into the bore 10 and serves as a stop against which the cylinder head cover 1 can be clamped by means of the screw elements 7. The fat of the federal government 13 is dimensioned so that when the cylinder head cover 1 is clamped Seal is pressed against the sealing surface 6 with a fixed preload.

Claims (4)

Patentansprüche Abdichtung einer Zylinderkopfhaube gegenüber dem Zylinderkopf einer Brennkraftmaschine mittels einer am Haubenrand selbsthaltend angeordneten Elastomer-Dichtung, die durch Verspannen der Zylinderkopfhaube mittels Schraubelementen an zylinderkopfseitig angeordneten Anschlagkörpern mit definierter Vorspannung gegen eine Dichtfläche am Zylinderkopf gepreßt wird, d a d u r c h g e k e n n z e i c h n'e t daß die Schraubelemente (7) zusammen mit den Anschlagkörpern (Bund 13) in den Verlauf der Dichtung (4) einbezogen und von dieser umschlossen sind. Claims sealing a cylinder head cover against the Cylinder head of an internal combustion engine by means of a self-retaining on the hood edge arranged elastomer gasket, which is made by bracing the cylinder head cover by means of Screw elements on stop bodies arranged on the cylinder head side with defined Preload is pressed against a sealing surface on the cylinder head, d a d u r c h g e k e n n n z e i c h n'e t that the screw elements (7) together with the stop bodies (Bund 13) included in the course of the seal (4) and enclosed by this are. 2. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Anschlagkörper Bundhülsen (12) vorgesehen sind, die von der Öffnung der Zylinderkopfhaube (1) aus in die im Haubenrand (3a) befindlichen Durchgangsbohrungen (9) eindrückbar'sind. 2. Seal according to claim 1, characterized in that the stop body Collar sleeves (12) are provided, which extend from the opening of the cylinder head cover (1) into the through bores (9) located in the hood edge (3a). 3. Abdichtung nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß die Bundhülsen (12) aus einem druckfesten Kunststoff bestehen.3. Seal according to claim 1 or 2, characterized in that the Collar sleeves (12) consist of a pressure-resistant plastic. 4. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Bundhülsen (12) in die Dichtung einvulkanisiert sind.4. Seal according to claim 1, characterized in that the collar sleeves (12) are vulcanized into the seal.
DE19833329418 1983-08-13 1983-08-13 Sealing of a cylinder head cover on the cylinder head of an internal combustion engine Expired DE3329418C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833329418 DE3329418C2 (en) 1983-08-13 1983-08-13 Sealing of a cylinder head cover on the cylinder head of an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833329418 DE3329418C2 (en) 1983-08-13 1983-08-13 Sealing of a cylinder head cover on the cylinder head of an internal combustion engine

Publications (2)

Publication Number Publication Date
DE3329418A1 true DE3329418A1 (en) 1985-02-28
DE3329418C2 DE3329418C2 (en) 1986-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833329418 Expired DE3329418C2 (en) 1983-08-13 1983-08-13 Sealing of a cylinder head cover on the cylinder head of an internal combustion engine

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Country Link
DE (1) DE3329418C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784396A (en) * 1987-06-01 1988-11-15 Ford Motor Company Retaining clip and gasket for engine subassembly
DE4232617A1 (en) * 1992-09-29 1994-03-31 Goetze Ag Seal arrangement for housing cover of engine block - has oval seal movement stops of raised spots on cover surface, extending around bore edge
EP0881377A3 (en) * 1997-05-31 1999-06-09 Robert Bosch Gmbh Device for fitting an internal combustion engine with supplementary parts
EP2587036A3 (en) * 2011-10-26 2017-11-22 MAN Truck & Bus AG Assembly of a valve cover on the cylinder head of an internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2293956T3 (en) 2001-04-10 2008-04-01 Bayerische Motoren Werke Aktiengesellschaft DEVICE FOR INSTALLING TWO HOUSING PARTS OF AN INTERNAL COMBUSTION ENGINE THAT ENCLOSURES A MOUNTING COMPARTMENT.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773142A (en) * 1972-10-02 1973-11-20 Caterpillar Tractor Co Noise-isolated rocker arm cover

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773142A (en) * 1972-10-02 1973-11-20 Caterpillar Tractor Co Noise-isolated rocker arm cover

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Werkstatt-Handbuch Motoren Per- sonenwagen, Bd. 2 der Daimler- Benz Aktiengesellschaft, Stutt- gart, Januar 1975, Seiten 990/1 bis 990/3 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784396A (en) * 1987-06-01 1988-11-15 Ford Motor Company Retaining clip and gasket for engine subassembly
DE4232617A1 (en) * 1992-09-29 1994-03-31 Goetze Ag Seal arrangement for housing cover of engine block - has oval seal movement stops of raised spots on cover surface, extending around bore edge
EP0881377A3 (en) * 1997-05-31 1999-06-09 Robert Bosch Gmbh Device for fitting an internal combustion engine with supplementary parts
EP2587036A3 (en) * 2011-10-26 2017-11-22 MAN Truck & Bus AG Assembly of a valve cover on the cylinder head of an internal combustion engine

Also Published As

Publication number Publication date
DE3329418C2 (en) 1986-07-03

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