EP1998034B1 - Coiffe de tête de cylindre - Google Patents

Coiffe de tête de cylindre Download PDF

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Publication number
EP1998034B1
EP1998034B1 EP08156342.1A EP08156342A EP1998034B1 EP 1998034 B1 EP1998034 B1 EP 1998034B1 EP 08156342 A EP08156342 A EP 08156342A EP 1998034 B1 EP1998034 B1 EP 1998034B1
Authority
EP
European Patent Office
Prior art keywords
head cover
cylinder head
bearing
cylinder
bearing part
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.)
Ceased
Application number
EP08156342.1A
Other languages
German (de)
English (en)
Other versions
EP1998034A2 (fr
EP1998034A3 (fr
Inventor
Robert Dunsch
Stefan Ruppel
Torsten Schellhase
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.)
Mahle International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1998034A2 publication Critical patent/EP1998034A2/fr
Publication of EP1998034A3 publication Critical patent/EP1998034A3/fr
Application granted granted Critical
Publication of EP1998034B1 publication Critical patent/EP1998034B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0476—Camshaft bearings
    • 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
    • F01L2301/00—Using particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/04—PTFE [PolyTetraFluorEthylene]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • the present invention relates to a cylinder head cover for covering a cylinder crankcase of an internal combustion engine according to the preamble of claim 1.
  • the cylinder head is equipped with a cylinder head cover for covering a cylinder crankcase of an internal combustion engine and has at least one bearing upper part for a camshaft, which is provided with a passage opening.
  • This passage opening is aligned on the one hand with a screw-in / through hole in the cylinder crankcase or in the bearing base so that a fastening of the cylinder head cover and the bearing shell on the cylinder crankcase via a common mounting screw is possible.
  • a cylinder head cover for a cylinder head in which first bearing halves for all camshaft bearing a camshaft are integrally formed with the cylinder head cover.
  • the second bearing halves are formed as separate parts and bolted to the first bearing halves, wherein a dividing plane between the cylinder head and cylinder head cover spaced from a dividing plane of the camshaft bearing is formed.
  • the present invention is concerned with the problem of providing an improved embodiment of a generic cylinder head cover, which in particular facilitates installation of the cylinder head cover on the camshaft and at the same time ensures reliable storage of the camshaft.
  • the invention is based on the general idea, in a cylinder head cover for covering a cylinder crankcase, these and at least one upper bearing part for a camshaft to match so that they can be set with a common mounting screw on the cylinder crankcase.
  • the bearing upper part should be made of a material which compared to the cylinder head cover other material properties, especially better Has storage properties.
  • the at least one bearing upper part has at least one passage opening, which on the one hand is aligned with a screw-in / through hole in a bearing base and / or a screw-in opening in the cylinder crankcase and on the other hand with a passage opening in the cylinder head cover, so that the above-mentioned attaching the cylinder head cover and the bearing shell is possible via a common fastening screw.
  • the bearing upper part Due to the different material properties of the at least one bearing upper part and the cylinder head cover, the bearing upper part can be designed such that it has particularly good bearing properties for the camshaft to be supported, while these properties do not have to have the cylinder head cover, so that for these a specially optimized for their application, other material can be selected.
  • the cylinder head cover according to the invention thereby enables on the one hand a simplified assembly of the cylinder head cover on the camshaft, since this can be determined together with the bearing shell and on the other hand it improves the bearing properties, as for the bearing upper part a special, selected with particularly good storage properties material is used.
  • latching elements in particular latching clips, are arranged on the cylinder head cover, which allow latching of the at least one bearing upper part to the cylinder head cover.
  • Such locking bracket play in particular in a bearing upper part of a role, which is designed as a separate component to the cylinder head cover.
  • the at least one upper bearing part can easily be locked with the latch brackets provided on the cylinder head cover and thus easily together with the cylinder head cover on the Cylinder crankcase mounted and bolted.
  • first the bearing upper part is screwed to the cylinder crankcase and then the cylinder head cover is first latched on the latch bracket with the at least one bearing shell and thereby assumes a predefined position for the final assembly.
  • each of the upper bearing parts may have a fastening screw, which fastened exclusively to the upper bearing part on the cylinder crankcase or the bearing shell together with the cylinder head cover.
  • the cylinder head cover is formed from a thermoplastic material
  • the Lürobeteil is formed from a thermosetting plastic.
  • Thermoplastics are plastics that can be easily deformed in a certain temperature range, namely thermoplastic. The process is reversible. This makes it possible to produce the cylinder head cover by injection molding.
  • thermosets are plastics that can not be reshaped after they have hardened. Duroplast thus remain dimensionally stable even at higher temperatures, which is particularly advantageous for the design of the upper bearing parts.
  • a bearing base for the camshaft formed from a thermosetting plastic, wherein the Lagerunter- and the bearing upper part can be formed as separate components or in one piece.
  • the two bearing parts are designed as separate components and therefore can be fixed together with the cylinder head cover on the cylinder crankcase via a common fastening screw.
  • a cylinder head 1 has a camshaft 2 mounted in a cylinder crankcase 14, which is mounted upwardly above at least one bearing upper part 3.
  • the cylinder crankcase 14 is covered by a cylinder head cover 4.
  • the at least one bearing upper part 3 for the camshaft 2 has at least one through-opening 5, which on the one hand has a screw-in / through-hole 5a in a bearing base 6 (cf. Fig. 6 ) and / or a screw-5b in the cylinder crankcase 14 and on the other hand with a through hole 5c in the cylinder head cover 4 is aligned.
  • a fastening of the cylinder head cover 4 and the bearing upper part 3 on the cylinder crankcase 14 via a common fastening screw 7 is possible.
  • the bearing upper part 3 can additionally be fastened with a fastening screw 7 'on the cylinder crankcase 14 or on a bearing base 6, which does not serve for the simultaneous fastening of the cylinder head cover 4.
  • the bearing upper part 3 is made of a material having different material properties, as the cylinder cap 4th
  • the at least one bearing upper part 3 is formed as a separate component from the cylinder head cover 4, wherein on the cylinder head cover 4 locking elements, in particular locking bracket 8, are arranged, which allow latching of the at least one bearing shell 3 on the cylinder head cover 4.
  • locking elements in particular locking bracket 8
  • the bearing shell 3 is first bolted by the screw 7 'to the bearing base 6 and the cylinder crankcase 14 and then the cylinder head cover 4 is latched by the locking bracket 8 with the bearing shell 3, so that subsequently the fastening screw 7 through the cylinder head cover 4, the Bearing upper part 3 can be screwed into the bearing base 6 and in the cylinder crankcase 14.
  • the fastening screw 7 is formed as a collar screw and may have a provided between the cylinder head cover 4 and the bearing shell 3 collar 9.
  • the cylinder head cover 4 is sealed relative to the cylinder crankcase 14 via a seal 10 extending along a flange and a seal 10 'arranged between the screw head and the cylinder head cover 4.
  • the at least one bearing upper part 3 has at least one sleeve extension 11 aligned with the passage opening 5c in the cylinder head cover 4, which engages in the passage opening 5c of the cylinder head cover 4 when the cylinder head cover 4 is mounted and forms a stop for a screw head of the fastening screw 7.
  • two fastening screws 7 may be provided, which cross both the cylinder head cover 4 and the upper bearing part 3.
  • the locking bracket 8 according to the Figures 2 and 3 can be molded onto the cylinder head cover 4.
  • Fig. 4 an embodiment of the cylinder head 1 according to the invention is shown, in which the bearing upper part 3 is formed as a bearing frame. In this case, a seal 10 "between the bearing upper part 3 and the cylinder crankcase 14 is provided.
  • the bearing upper part 3 formed integrally with the cylinder head cover 4, wherein it can be provided that the cylinder head cover 4 is formed of a thermoplastic material and the bearing shell 3 made of a thermosetting plastic.
  • the specific advantages of the individual types of plastic have already been mentioned in the introduction to the description. It is conceivable in this case that the upper bearing part 3 is molded onto the cylinder head cover 4 and, optionally, an additional bearing shell 12, in particular of aluminum, can be provided in the bearing upper part 3.
  • the bearing base 6 made of plastic, in particular thermosetting plastic formed, wherein the bearing base 6 and the bearing shell 3 may be formed either as separate components or in one piece.
  • the camshaft 2 is completely encapsulated.
  • the composite of the two bearing parts 3 and 6 bearing can either turn separately to the cylinder head cover 4 or integrally molded, in particular molded onto this.
  • the bearing base 6 has an oil supply passage 13 for supplying the camshaft bearing with lubricant.
  • the cylinder head cover 4 and the associated bearing upper part 3 and / or the lower bearing part 6 is constructed as a hybrid component of at least two different materials.
  • bearing shown which consists of the contiguous bearing base 6 and the associated bearing upper part 3, offers the great advantage of completely overmolding the camshaft 2 and to dispense with the machining of a camshaft bearing entirely.

Landscapes

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

Claims (8)

  1. Carter-moteur (14) comportant un couvercle de culasse (4) pour recouvrir ce dernier, dans lequel au moins une partie supérieure de palier (3) pour un arbre à cames (2) présente au moins une ouverture traversante (5), qui s'aligne d'un côté avec une ouverture traversante/ de vissage (5a) dans une partie inférieure de palier (6) et/ou une ouverture de vissage (5b) dans le carter-moteur (14) et d'un autre côté avec une ouverture traversante (5c) dans le couvercle de culasse (4), de telle sorte qu'une fixation du couvercle de culasse (4) et de la partie supérieure de palier (3) sur le carter-moteur (14) soit possible par l'intermédiaire d'une vis de fixation commune (7),
    caractérisé en ce que
    - le couvercle de culasse (4) est fabriqué dans un matériau, qui présente d'autres propriétés de matériau que la au moins une partie supérieure de palier (3),
    - des éléments d'encliquetage (8) sont disposés sur le couvercle de culasse (4), lesquels permettent un encliquetage d'au moins une partie supérieure de palier (3) sur le couvercle de culasse (4).
  2. Carter-moteur selon la revendication 1,
    caractérisé en ce que
    la au moins une partie supérieure de palier (3) est conçue comme un composant séparé du couvercle de culasse (4).
  3. Carter-moteur selon les revendications 1 ou 2,
    caractérisé en ce que
    la au moins une partie supérieure de palier (3) présente au moins un prolongement de gaine (11) s'alignant avec l'ouverture traversante (5c) dans le couvercle de culasse (4), qui lorsque le couvercle de culasse (4) est monté vient en prise avec l'ouverture traversante (5c) du couvercle de culasse (4) et forme une butée pour une tête de vis de la vis de fixation (7).
  4. Carter-moteur selon une des revendications 1 à 3,
    caractérisé en ce que
    la au moins une partie supérieure de palier (3) est conçue comme un cadre de palier.
  5. Carter-moteur selon une des revendications 1 à 4,
    caractérisé en ce que
    le couvercle de culasse (4) est conçu dans un plastique thermoplastique et la partie supérieure de palier (3) est conçue dans un plastique thermodurcissable.
  6. Carter-moteur selon une des revendications 1 à 5,
    caractérisé en ce que
    une partie inférieure de palier (6) est conçue dans un plastique thermodurcissable, dans lequel la partie inférieure de palier et la partie supérieure de palier (6, 3) peuvent être conçues comme des composants séparés ou en un seul tenant.
  7. Carter-moteur selon une des revendications 1 à 6,
    caractérisé en ce que
    dans la partie inférieure de palier (6) un canal d'huile (13) est prévu, notamment est moulé par injection.
  8. Moteur à combustion interne comportant un carter-moteur (14) selon une des revendications 1 à 7.
EP08156342.1A 2007-05-30 2008-05-16 Coiffe de tête de cylindre Ceased EP1998034B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007025129A DE102007025129A1 (de) 2007-05-30 2007-05-30 Zylinderkopfhaube

Publications (3)

Publication Number Publication Date
EP1998034A2 EP1998034A2 (fr) 2008-12-03
EP1998034A3 EP1998034A3 (fr) 2009-11-04
EP1998034B1 true EP1998034B1 (fr) 2014-02-12

Family

ID=39735351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08156342.1A Ceased EP1998034B1 (fr) 2007-05-30 2008-05-16 Coiffe de tête de cylindre

Country Status (4)

Country Link
US (1) US7845322B2 (fr)
EP (1) EP1998034B1 (fr)
JP (1) JP5124343B2 (fr)
DE (1) DE102007025129A1 (fr)

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DE102007063254A1 (de) * 2007-12-31 2009-07-02 Mahle International Gmbh Zylinderkopfhaube
DE102007063257A1 (de) * 2007-12-31 2009-07-02 Mahle International Gmbh Lagereinrichtung
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US20120199096A1 (en) * 2009-10-13 2012-08-09 Honda Motor Co., Ltd. Cover member fastening method and fastening structure for a head cover
DE102011079166A1 (de) * 2011-07-14 2013-01-17 Mahle International Gmbh Brennkraftmaschine
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DE102014109075A1 (de) 2014-06-27 2015-12-31 Elringklinger Ag Zylinderkopfhaube und Verfahren zur Herstellung einer Zylinderkopfhaube
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JP2018031260A (ja) * 2015-01-08 2018-03-01 三菱自動車工業株式会社 シリンダヘッド
US9725051B2 (en) * 2015-05-01 2017-08-08 Ford Global Technologies, Llc Engine cover assembly feature
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DE102015224440A1 (de) * 2015-12-07 2017-06-08 Mahle International Gmbh Zylinderkopfhaube
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DE102017213684A1 (de) * 2017-08-07 2019-02-07 Mahle International Gmbh Modul aus einer Zylinderkopfhaube und einem Nockenwellenlager, Verbund des Moduls mit einem Zylinderkopf sowie Verfahren zum Herstellen dieses Verbunds
DE102017118862A1 (de) 2017-08-18 2019-02-21 Man Truck & Bus Ag Vorrichtung zum drehbaren Lagern einer Nockenwelle
DE102018205982A1 (de) * 2018-04-19 2019-10-24 Mahle International Gmbh Lagerrahmen oder Zylinderkopfhaube einer Brennkraftmaschine
FR3090748B1 (fr) * 2018-12-20 2020-12-25 Renault Sas Culasse comprenant un moyen de positionnement pour un demi-palier inférieur
EP4081702A4 (fr) * 2019-12-24 2024-02-28 Fleetguard Filters Private Limited Calotte de cylindre pour moteur à combustion interne
DE102021201823A1 (de) * 2021-02-26 2022-09-01 Mahle International Gmbh Zylinderkopfhaube
DE102022203445A1 (de) * 2022-04-06 2023-10-12 Mahle International Gmbh Zylinderkopfhaubenanordnung

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Also Published As

Publication number Publication date
EP1998034A2 (fr) 2008-12-03
US7845322B2 (en) 2010-12-07
US20080295796A1 (en) 2008-12-04
JP5124343B2 (ja) 2013-01-23
DE102007025129A1 (de) 2008-12-04
JP2008298072A (ja) 2008-12-11
EP1998034A3 (fr) 2009-11-04

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