EP2041417B1 - Zylinderkopf eines verbrennungsmotors mit verstärkungselement - Google Patents

Zylinderkopf eines verbrennungsmotors mit verstärkungselement Download PDF

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Publication number
EP2041417B1
EP2041417B1 EP07803942A EP07803942A EP2041417B1 EP 2041417 B1 EP2041417 B1 EP 2041417B1 EP 07803942 A EP07803942 A EP 07803942A EP 07803942 A EP07803942 A EP 07803942A EP 2041417 B1 EP2041417 B1 EP 2041417B1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
lattice
head according
aluminum alloy
face
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.)
Not-in-force
Application number
EP07803942A
Other languages
English (en)
French (fr)
Other versions
EP2041417A1 (de
Inventor
Romain Dejean
Eric Nicouleau-Bourles
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP2041417A1 publication Critical patent/EP2041417A1/de
Application granted granted Critical
Publication of EP2041417B1 publication Critical patent/EP2041417B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
    • 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

Definitions

  • the present invention relates to a cylinder head for an internal combustion engine.
  • the cylinder heads of internal combustion engines are generally made of aluminum alloy.
  • the FR2671310 and 2682899 describe cylinder heads of an internal combustion engine having improved resistance to the aforementioned stresses.
  • the FR 2 059 230 shows a cylinder head according to the first part of claim 1.
  • the object of the invention is to create a cylinder head for an internal combustion engine, made of aluminum alloy having a significantly increased resistance to the mechanical and thermal stresses mentioned above.
  • a cylinder head characterized in that it comprises a perforated element extending near the face of the cylinder head adjacent to the combustion chamber, this perforated element being completely coated with the aluminum alloy of the cylinder head and being made of a material having a higher bending strength than said aluminum alloy.
  • the perforated element above reinforces in particular with respect to the bending forces it undergoes during the operation of the engine, the part of the yoke called tablature which is adjacent to the combustion chamber.
  • the perforated element is made of steel and consists of a grid or a lattice.
  • This grid or mesh preferably extends parallel to the face of the cylinder head adjacent to the combustion chamber.
  • This grid or mesh, steel or other high-strength alloy is thus separated from said face by a constant aluminum alloy thickness.
  • said lattice extends over substantially the entire length and width of the yoke.
  • said lattice reinforces with respect to the bending and thermal forces, the entire part of the yoke that is adjacent to the combustion chamber.
  • said mesh extends between the intake and exhaust ducts and the passages for the cooling liquid made in the cylinder head and said face adjacent to the combustion chamber.
  • said lattice is separated from said ducts, passages and said face by an aluminum alloy thickness at least equal to the thickness of said lattice.
  • said lattice comprises recesses surrounding the exhaust and intake ducts, the fuel injector and the glow plug.
  • the lattice is composed of parallel bars extending along the length of the bolt, of bars parallel extending along the width of the yoke and parallel bars extending along diagonals.
  • the bars have a smaller thickness in the plane of the lattice than in a direction perpendicular to this plane.
  • the figure 1 shows in section the cylinder head 1 of an internal combustion engine, made of aluminum alloy, in particular a direct injection diesel engine.
  • This yoke 1 comprises a perforated element 2 extending near the face 3 of the yoke adjacent to the combustion chamber.
  • This perforated element 2 is completely covered by the aluminum alloy of the yoke 1 and is made of a material such as steel having a higher bending strength than the aluminum alloy constituting the yoke 1.
  • the perforated element 1 is a lattice that can be cut or stamped into a steel plate or be molded.
  • the figure 1 shows that the mesh 2 extends parallel to the face 3 of the yoke 1, adjacent to the combustion chamber and extends over substantially the entire length and width of the yoke 1.
  • the mesh 2 extends between the intake ducts 4 and exhaust 5 and the passages 6, 7, 8 for the cooling liquid made in the cylinder head and the face 3 adjacent to the combustion chamber.
  • the lattice 2 is separated from the ducts 4, 5, passages 6, 7, 8 and from the face 3 by an aluminum alloy thickness at least equal to the thickness of the lattice 2.
  • the figures 2 and 4 show on the other hand, that the mesh 2 has circular recesses 9, 10, 11, 12, 13 for surrounding the exhaust ducts and intake, the fuel injector and the glow plug.
  • the lattice is composed of parallel bars 14 extending along the length of the yoke, parallel bars 15 extending along the width of the yoke and parallel bars 16, 17 extending along diagonals.
  • the bars 14, 15, 16 and 17 have a smaller thickness in the plane of the lattice 2 than in a direction perpendicular to this plane.
  • This feature gives the mesh 2 a high resistance to bending stresses, despite the fact that the openings between the bars 14 to 17 represent a surface greater than 90% of the total surface of the mesh 2.
  • the molten alloy completely covers the bars 14 to 17 of the mesh 2 and completely fills the openings, that is to say the spaces between the bars.
  • the steel mesh 2 reinforces with respect to the bending forces the tablature of the cylinder head and prevents the cracking thereof, despite the strong mechanical and thermal stresses it undergoes in the case of an engine whose power can to reach 80 KW per liter of displacement.
  • the mesh 2 may also be made of another alloy with high strength than steel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Luminescent Compositions (AREA)

Claims (9)

  1. Zylinderkopf (1) für einen Verbrennungsmotor, der aus Aluminiumlegierung hergestellt ist und ein durchbrochenes Element (2) enthält, das sich nahe der dem Brennraum benachbarten Seite (3) des Zylinderkopfs erstreckt, wobei dieses durchbrochene Element (2) vollständig von der Aluminiumlegierung des Zylinderkopfs umhüllt und aus einem Material hergestellt ist, das eine höhere Biegefestigkeit hat als die Aluminiumlegierung, dadurch gekennzeichnet, dass das durchbrochene Element (2) ein Gitter ist.
  2. Zylinderkopf nach Anspruch 1, dadurch gekennzeichnet, dass das Gitter (2) aus Stahl ist.
  3. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gitter (2) sich parallel zu der dem Brennraum benachbarten Seite (3) des Zylinderkopfs (1) erstreckt.
  4. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gitter (2) sich im Wesentlichen über die ganze Länge und Breite des Zylinderkopfs (1) erstreckt.
  5. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gitter (2) sich zwischen dem Ansaugkanal (4) und dem Auslasskanal (5) und den in dem Zylinderkopf hergestellten Durchlässen (6, 7, 8) für das Kühlmittel und der dem Brennraum benachbarten Seite (3) erstreckt.
  6. Zylinderkopf nach Anspruch 5, dadurch gekennzeichnet, dass das Gitter (2) von den Kanälen (4, 5), Durchlässen (6, 7, 8) und der Seite (3) durch eine Dicke der Aluminiumlegierung getrennt ist, die mindestens gleich der Dicke des Gitters (2) ist.
  7. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gitter (2) Aussparungen (9, 10, 11, 12, 13) aufweist, die die Auslass- und Ansaugkanäle, das Kraftstoffeinspritzventil und die Glühkerze umgeben.
  8. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gitter (2) aus parallelen Stegen (14), die sich entlang der Länge des Zylinderkopfs erstrecken, aus parallelen Stegen (15), die sich entlang der Breite des Zylinderkopfs erstrecken, und aus parallelen Stegen (16, 17), die sich entlang von Diagonalen erstrecken besteht.
  9. Zylinderkopf nach Anspruch 8, dadurch gekennzeichnet, dass die Stege (14 bis 17) in der Ebene des Gitters (2) eine geringere Dicke haben als in einer Richtung lotrecht zu dieser Ebene.
EP07803942A 2006-07-18 2007-06-26 Zylinderkopf eines verbrennungsmotors mit verstärkungselement Not-in-force EP2041417B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606526A FR2904052B1 (fr) 2006-07-18 2006-07-18 Culasse pour moteur a combustion interne, comportant un element de renfort.
PCT/FR2007/051523 WO2008009834A1 (fr) 2006-07-18 2007-06-26 Culasse pour moteur a combustion interne comportant un element de renfort

Publications (2)

Publication Number Publication Date
EP2041417A1 EP2041417A1 (de) 2009-04-01
EP2041417B1 true EP2041417B1 (de) 2009-12-23

Family

ID=37814187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803942A Not-in-force EP2041417B1 (de) 2006-07-18 2007-06-26 Zylinderkopf eines verbrennungsmotors mit verstärkungselement

Country Status (6)

Country Link
EP (1) EP2041417B1 (de)
JP (1) JP2009543979A (de)
AT (1) ATE453044T1 (de)
DE (1) DE602007003985D1 (de)
FR (1) FR2904052B1 (de)
WO (1) WO2008009834A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2059230A5 (de) * 1969-09-11 1971-05-28 Kloeckner Humboldt Deutz Ag
JPS5359009U (de) * 1976-10-21 1978-05-19
JPS56113138U (de) * 1980-01-31 1981-09-01
JPS5874266A (ja) * 1981-10-29 1983-05-04 Honda Motor Co Ltd エンジンのシリンダヘツドの製造方法
JPS61244860A (ja) * 1985-04-23 1986-10-31 Mitsubishi Motors Corp シリンダヘツド
JPS63147959A (ja) * 1986-12-09 1988-06-20 Isuzu Motors Ltd シリンダヘツド構造
JPH0530447U (ja) * 1991-09-25 1993-04-23 日産自動車株式会社 エンジンのクランクフレーム
FR2697291B1 (fr) * 1992-10-28 1994-12-02 Peugeot Agencement d'inserts métalliques pour joints d'expansion de culasse de moteur à combustion interne.
DE102004053362A1 (de) * 2004-11-02 2006-05-04 Fev Motorentechnik Gmbh Verstärktes Bauteil

Also Published As

Publication number Publication date
FR2904052B1 (fr) 2012-10-19
ATE453044T1 (de) 2010-01-15
DE602007003985D1 (de) 2010-02-04
JP2009543979A (ja) 2009-12-10
EP2041417A1 (de) 2009-04-01
WO2008009834A1 (fr) 2008-01-24
FR2904052A1 (fr) 2008-01-25

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