WO2003006811A1 - Piece rapportee servant de zone de base d'une culasse - Google Patents

Piece rapportee servant de zone de base d'une culasse Download PDF

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Publication number
WO2003006811A1
WO2003006811A1 PCT/DE2002/002330 DE0202330W WO03006811A1 WO 2003006811 A1 WO2003006811 A1 WO 2003006811A1 DE 0202330 W DE0202330 W DE 0202330W WO 03006811 A1 WO03006811 A1 WO 03006811A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
area
sintered
valve seat
use according
Prior art date
Application number
PCT/DE2002/002330
Other languages
German (de)
English (en)
Inventor
Torsten Schellhase
Original Assignee
Mahle Ventiltrieb 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 Ventiltrieb Gmbh filed Critical Mahle Ventiltrieb Gmbh
Publication of WO2003006811A1 publication Critical patent/WO2003006811A1/fr

Links

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
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
    • 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
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/248—Methods for avoiding thermal stress-induced cracks in the zone between valve seat openings
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/249—Cylinder heads with flame plate, e.g. insert in the cylinder head used as a thermal insulation between cylinder head and combustion chamber

Definitions

  • the invention relates to an application as the base area of a cylinder head of an internal combustion engine according to the preamble of patent claim 1.
  • a cylinder head with an insert made of dispersion-hardened sintered aluminum is known.
  • the insert can either be cast in, pressed in, welded in or mechanically anchored.
  • the valve seat areas are shrunk or pressed in in the form of seat rings, which on the one hand results in poor heat transfer to the adjacent material and on the other hand requires a high level of production and assembly effort.
  • US Pat. No. 5,954,038 A describes an insert for an aluminum cylinder head which is made of a material which has high heat resistance and thermal conductivity, this insert containing at least a proportion of gray cast iron.
  • This insert is either hardened in the area of the valve seats or valve seat rings are shrunk or pressed in to achieve the required wear resistance. If the valve seat area is hardened, the specific requirements for an inlet and outlet Valve seat cannot be adjusted optimally.
  • valve seat rings there is the disadvantage already highlighted above in DE 31 00 755 AI.
  • DE 199 18 002 Cl describes a method for casting a cylinder head from two alloys.
  • a high-strength, high-temperature change-resistant first light metal alloy is cast in the combustion chamber floor area up to a layer thickness of approximately 50 mm. Even before this layer thickness is reached, the casting performance of the first light metal alloy is reduced and a second easily castable light metal alloy is added, which forms the upper part of the cylinder head.
  • This process offers the advantage of using a high-quality alloy in mechanically and thermally highly stressed areas. However, the mass used for this alloy is very high and the seat ring problem continues to exist.
  • the invention is concerned with the problem of creating a generic insert that is easy to manufacture and functions reliably.
  • the insert can be manufactured in a powder metallurgical process from different materials. Different materials can be used for the area of the gas exchange valve seats according to the respective requirements.
  • the valve seat areas can be inserted as finished sintered seat rings in a press mold for producing the insert, the remaining area, which is assigned to the web and sealing surfaces in the cylinder head, filled with the base material in powder form, pressed and then to achieve a composite part at approx. 600 ° C is sintered.
  • dispersion-hardened sintered aluminum can be selected as the base material for use.
  • the insert can either be inserted individually for each cylinder or as a coherent insert for several cylinders in the casting mold for the production of the cylinder head and can thus be cast into the cylinder head.
  • An excellent metallic bond and a firm mechanical form fit between the insert and the cylinder head can be achieved by means of a surface treatment such as for example finishing or sandblasting of the insert and by a special shape.
  • An insert according to the invention made from dispersion-hardened aluminum has a very high heat resistance, a high pressure creep resistance and a good thermal conductivity. In terms of thermal expansion behavior, such an insert corresponds to that of an aluminum cylinder head.
  • the insert By pouring the insert into a cylinder head, either as a single insert for each cylinder or as a coherent insert for several cylinders with a previous surface treatment such as finishing or sandblasting, an intimate bond is created by an intermetallic connection and mechanical clamping and form locking. Since the insert comprises the thermally highly stressed areas of the base area, in particular the valve webs and the sealing surface area subjected to a high pressure load, there is neither a risk of web rupture nor a risk of indentation in the sealing area.
  • Fig. 1 shows the basic representation of a partial cross section through a cast from an aluminum alloy cylinder head of an internal combustion engine with charge exchange channels and use as a partial floor area.
  • a cylinder head blank 1 with gas exchange channels 2, 3 and a cooling water jacket 4 is provided with an insert 5 in the bottom area thereof.
  • the insert 5 consists of dispersion-hardened aluminum and is cast directly into the cylinder head 1.
  • the insert 5 is a composite body which is produced with the aid of a powder metallurgical process.
  • the manufacture takes place by inserting valve seat areas 6, 7 in the form of sintered rings into a press mold for the insert 5.
  • the remaining space of the press mold for the production of the insert is then filled as area A of the insert 5 with the dispersion-hardened aluminum powder, the insert is pressed and then sintered at a temperature of approx. 600 ° C.
  • the insert 5 is inserted into a casting mold for the production of the cylinder head 1 after a surface treatment by, for example, finishing, and cast with aluminum casting material, an intermetallic compound being formed.
  • the insert 5 can be inserted into the cylinder head casting mold either individually for each cylinder or as a coherent insert 5 for several cylinders.
  • the insert 5 expediently consists of sintered steel.
  • the production of this sintered steel insert can be carried out analogously to that in the use of sintered aluminum described above.

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)

Abstract

L'invention concerne une pièce rapportée métallique utilisée comme zone de base d'une culasse, comprenant au moins les zones des sièges de soupape des valves de commutation des gaz, et a pour but d'obtenir une telle pièce de fabrication simple et d'un fonctionnement fiable. A cet effet, la pièce rapportée est caractérisée en ce que les zones des sièges de soupape (6, 7) sont constituées par des éléments métalliques frittés qui sont différents par rapport à une zone limitrophe A de la pièce rapportée (5), et en ce que les éléments métalliques formant les zones des sièges de soupapes (6, 7) sont des pièces fabriquées indépendamment sur lesquelles est formée ultérieurement la zone limitrophe de la pièce rapportée.
PCT/DE2002/002330 2001-07-11 2002-06-26 Piece rapportee servant de zone de base d'une culasse WO2003006811A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133757.4 2001-07-11
DE2001133757 DE10133757A1 (de) 2001-07-11 2001-07-11 Einsatz als Bodenbereich eines Zylinderkopfes

Publications (1)

Publication Number Publication Date
WO2003006811A1 true WO2003006811A1 (fr) 2003-01-23

Family

ID=7691437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/002330 WO2003006811A1 (fr) 2001-07-11 2002-06-26 Piece rapportee servant de zone de base d'une culasse

Country Status (2)

Country Link
DE (1) DE10133757A1 (fr)
WO (1) WO2003006811A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331631B3 (de) * 2003-06-30 2005-01-05 Ehw Thale Sintermetall Gmbh Bauteil
FR2943099A1 (fr) * 2009-03-12 2010-09-17 Peugeot Citroen Automobiles Sa Insert pour culasse.
US7875075B2 (en) 2005-09-26 2011-01-25 Warsaw Orthopedic, Inc. Hybrid intervertebral spinal fusion implant
US7942104B2 (en) 2007-01-22 2011-05-17 Nuvasive, Inc. 3-dimensional embroidery structures via tension shaping
US7946236B2 (en) 2007-01-31 2011-05-24 Nuvasive, Inc. Using zigzags to create three-dimensional embroidered structures
EP2708213A1 (fr) 2012-09-13 2014-03-19 PAT&Co bvba Systèmes d'administration de médicament en fibres d'acétate de vinyle d'éthylène polyvalent pour une implantation ou une insertion à long terme

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3039858A1 (fr) * 2015-08-03 2017-02-10 Saint Jean Ind Culasse pour moteur a combustion interne, moteur comprenant une telle culasse et procede de fabrication d'une telle culasse

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115127A (en) * 1961-10-02 1963-12-24 Charles O Spencer Removable insert for internal combustion chambers
DE3100755A1 (de) 1981-01-13 1982-09-02 Klöckner-Humboldt-Deutz AG, 5000 Köln Zylinderkopf fuer eine brennkraftmaschine
US4763876A (en) * 1985-11-05 1988-08-16 Ngk Insulators, Ltd. Valve seat insert and cylinder head with the valve seat insert
EP0332586A1 (fr) * 1988-03-11 1989-09-13 FIAT AUTO S.p.A. Culasse à matériel léger pour un moteur à combustion interne avec pièce intercalée en acier fritté et méthode de fabrication
DE3837254A1 (de) * 1988-11-03 1990-05-10 Bayerische Motoren Werke Ag Leichtmetall-einlage fuer die bildung einer dehnfuge in aus leichtmetallguss gebildeten brennraumwaenden von brennkraftmaschinen, insbesondere zylinderkopfboden von diesel-brennkraftmaschinen
EP0392988A1 (fr) * 1989-04-13 1990-10-17 FIAT AUTO S.p.A. Procédé pour produire des culasses de cylindre avec plaques de flamme pour des moteurs à combustion interne
US5954038A (en) 1997-09-02 1999-09-21 Cummins Engine Company, Inc. Combustion face insert
DE19918002C1 (de) 1999-04-21 2000-10-26 Univ Magdeburg Tech Verfahren zum Gießen eines Leichtmetall-Zylinderkopfs aus zwei Legierungen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1200699B (it) * 1985-07-31 1989-01-27 Gilardoni Vittorio Spa Testata per motori alternativi a combustione interna
JPH0650054B2 (ja) * 1989-08-10 1994-06-29 いすゞ自動車株式会社 副室の断熱構造及びその製造法
DE4124811C1 (fr) * 1991-07-26 1992-08-06 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4419775A1 (de) * 1993-06-24 1995-01-05 Volkswagen Ag Zylinderkopf
DE19712624C2 (de) * 1997-03-26 1999-11-04 Vaw Motor Gmbh Aluminiummatrix-Verbundwerkstoff und Verfahren zu seiner Herstellung
FR2765629B1 (fr) * 1997-07-01 2002-02-01 Renault Moteur a injection directe et allumage commande
DE19753407C2 (de) * 1997-12-02 2000-08-03 Invent Gmbh Entwicklung Neuer Technologien Verfahren und Vorrichtung zur Umwandlung von Wärme in Arbeit
AT3602U1 (de) * 1999-04-19 2000-05-25 Avl List Gmbh Zylinderkopf für eine brennkraftmaschine
FR2799795B1 (fr) * 1999-10-15 2002-01-25 Jean Louis Rico Chambre de combustion a confinement thermique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115127A (en) * 1961-10-02 1963-12-24 Charles O Spencer Removable insert for internal combustion chambers
DE3100755A1 (de) 1981-01-13 1982-09-02 Klöckner-Humboldt-Deutz AG, 5000 Köln Zylinderkopf fuer eine brennkraftmaschine
US4763876A (en) * 1985-11-05 1988-08-16 Ngk Insulators, Ltd. Valve seat insert and cylinder head with the valve seat insert
EP0332586A1 (fr) * 1988-03-11 1989-09-13 FIAT AUTO S.p.A. Culasse à matériel léger pour un moteur à combustion interne avec pièce intercalée en acier fritté et méthode de fabrication
DE3837254A1 (de) * 1988-11-03 1990-05-10 Bayerische Motoren Werke Ag Leichtmetall-einlage fuer die bildung einer dehnfuge in aus leichtmetallguss gebildeten brennraumwaenden von brennkraftmaschinen, insbesondere zylinderkopfboden von diesel-brennkraftmaschinen
EP0392988A1 (fr) * 1989-04-13 1990-10-17 FIAT AUTO S.p.A. Procédé pour produire des culasses de cylindre avec plaques de flamme pour des moteurs à combustion interne
US5954038A (en) 1997-09-02 1999-09-21 Cummins Engine Company, Inc. Combustion face insert
DE19918002C1 (de) 1999-04-21 2000-10-26 Univ Magdeburg Tech Verfahren zum Gießen eines Leichtmetall-Zylinderkopfs aus zwei Legierungen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331631B3 (de) * 2003-06-30 2005-01-05 Ehw Thale Sintermetall Gmbh Bauteil
US7875075B2 (en) 2005-09-26 2011-01-25 Warsaw Orthopedic, Inc. Hybrid intervertebral spinal fusion implant
US7942104B2 (en) 2007-01-22 2011-05-17 Nuvasive, Inc. 3-dimensional embroidery structures via tension shaping
US7946236B2 (en) 2007-01-31 2011-05-24 Nuvasive, Inc. Using zigzags to create three-dimensional embroidered structures
FR2943099A1 (fr) * 2009-03-12 2010-09-17 Peugeot Citroen Automobiles Sa Insert pour culasse.
EP2708213A1 (fr) 2012-09-13 2014-03-19 PAT&Co bvba Systèmes d'administration de médicament en fibres d'acétate de vinyle d'éthylène polyvalent pour une implantation ou une insertion à long terme
WO2014041120A1 (fr) 2012-09-13 2014-03-20 Pat&Co Bvba Systèmes multiusages d'administration de médicament destinés à une implantation ou insertion à long terme

Also Published As

Publication number Publication date
DE10133757A1 (de) 2003-02-13

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