EP0899042A1 - Méthode de fabrication d'une culasse moulée pour un moteur à combustion - Google Patents

Méthode de fabrication d'une culasse moulée pour un moteur à combustion Download PDF

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Publication number
EP0899042A1
EP0899042A1 EP98113967A EP98113967A EP0899042A1 EP 0899042 A1 EP0899042 A1 EP 0899042A1 EP 98113967 A EP98113967 A EP 98113967A EP 98113967 A EP98113967 A EP 98113967A EP 0899042 A1 EP0899042 A1 EP 0899042A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
displacement body
water space
head according
cast cylinder
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
EP98113967A
Other languages
German (de)
English (en)
Other versions
EP0899042B1 (fr
Inventor
Jochen Dr. Betsch
Arnold Kaden
Georg Stumpp
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG, Daimler Benz AG filed Critical DaimlerChrysler AG
Publication of EP0899042A1 publication Critical patent/EP0899042A1/fr
Application granted granted Critical
Publication of EP0899042B1 publication Critical patent/EP0899042B1/fr
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

Definitions

  • the invention relates to a method for manufacturing of a cast cylinder head for an internal combustion engine according to the closer in the preamble of claim 1 defined type, as well as a cast cylinder head for an internal combustion engine according to that in the preamble of claim 7 defined art.
  • cylinder heads are made almost exclusively by casting manufactured. Usually molds are used, the outer edge of them by molds, e.g. from steel, be formed. For the production of inlet and outlet channels as well as a room for the cooling water in the Cylinder head, the so-called water space, are in the molds made from poured sand mounted.
  • the sand cores first mechanically reduced and then mostly with compressed air from the cavities thus formed in Blown cylinder head.
  • U.S. Patent 4,690,104 describes a cast-made one Cylinder head for an internal combustion engine, which has an opening in the upper area, in which is screwed into a cup-shaped part. Through this part, the cooling water flow should be in the direction of the combustion chambers are directed, the opening used to remove the pouring sand at the same time becomes.
  • a cylinder head which on top with one by screws attached cover plate is provided.
  • a distributor plate with additional screws attached, which is to cause that through the cylinder head flowing cooling water mostly in the Located near the combustion chambers.
  • this task is characterized by Part of claim 1 mentioned features solved.
  • the displacement body according to the invention which in remains in the water space of the cylinder head an improved distribution of the coolant flow in the cylinder head, especially a concentration of Coolant flow to the top of the bottom Area of the cylinder head arranged combustion chambers.
  • This improved cooling advantageously has one lower required power of a water pump, one lower fuel consumption and higher knock tolerance result.
  • Another advantage of being placed in the water space Displacement body is that thereby the amount of coolant the internal combustion engine significantly reduced can be. This reduction leads to a shorter one Warm-up phase of the internal combustion engine, which causes pollutant emissions and reduced friction, driving comfort, Heating response and defrost speed and defog speed of the disks increase.
  • the present invention offers a further positive aspect Displacement body in that it is used for stiffening of the cylinder head can contribute.
  • Fig. 1 shows a mold 1, which in a known manner constructed from an upper part 2 and a lower part 3 is. At its outer edge, the mold 1 limited by a molding box 4. The top 2 and the lower part 3 are designed as molds.
  • the molding box 4 is made of metal, such as Steel.
  • a Cavity 5 formed Between the upper part 2 and the lower part 3 is a Cavity 5 formed, which after the casting process forms the cylinder head.
  • the one shown in Fig. 1 Section through the mold 1 also shows one Sand core 6, the inlet and outlet channels after the casting process forms.
  • the sand core 6 is inserted in core bearings 7, which are arranged in the lower part 3.
  • sand core 8 To form a water space after the casting process there is another sand core in the cavity 5 8. As can be seen from Fig. 2, is the sand core 8 also inserted in core bearings 9, which are located in the lower part 3.
  • a displacement body is placed in the sand core 8 before the casting process 10 incorporated. This will do so achieved that before the onset of the sand core 8 of Displacement body 10 is sanded and thus the Sand core 8 only arises.
  • the pouring sand of the sand core 8 has depending on the material used for the displacement body 10 a corresponding insulation effect, to melt or evaporate the displacer 10 to prevent during the casting process.
  • the displacement body 10 has fixing areas 11, which are located in the immediate vicinity of the core bearing 9 are.
  • the arrangement of the fixing areas 11 is also anywhere in the cylinder head possible to a Allow connection to the rest of the cylinder head can.
  • the displacement body 10 first in a not shown Manufacturing mold for the sand core 8 fixed. After this The fixing areas 11 are used for the casting the rest of the cylinder head.
  • the fixing areas 11 are from the liquid material during the casting process melted, which by inlets not shown flows into the cavity 5. This results in a firm connection and thus also a fixation of the position Displacement body 10 with during the casting process material flowing into the cavity 5.
  • the displacement body 10 itself can be very simple and inexpensive from a not shown two or more parts, e.g. by pressing or Pour, be made.
  • the casting process with the Sandkern 8 can in despite its new construction be carried out in a known manner.
  • the displacement body 10 even stabilizes the otherwise very fragile sand core 8.
  • the rigidity and strength of the cylinder head can be increased noticeably. It can by the type of material used and the associated casting temperatures specifically Compressive or tensile stresses built up in the cylinder head become. This is due to the cooling material achieved in the cavity 5, which the displacement body 10 spanned. This makes it possible for later Operation of the cylinder head occurring loads through appropriately selected compressive or tensile preloads balance.
  • the displacement body 10 can structural elements to stiffen the cylinder head like posts or ribs included.
  • the displacement body shown in Fig. 1 and Fig. 2 10 has one of the cooling water conditions in the Water space adapted shape, however, are not shown in Exemplary embodiments for further optimization the flow of both solidly ribbed lattice spoiler configurations of the displacer 10 as also very simply constructed displacement body 10 imaginable.
  • the Displacement body 10 made of a material with less Density than the coolant so that the Displacement body 10 after filling the internal combustion engine with coolant due to the resulting buoyancy forces freely floating in the upper area of the Water room is located. It is possible at the Top of the cavity 5 or at the top of the Displacer 10 spacers to attach, so that even in the upper area of the water space Coolant flow is possible.
  • the main part of the coolant is hot as described above Walls of the combustion chambers concentrated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
EP98113967A 1997-08-13 1998-07-25 Méthode de fabrication d'une culasse moulée pour un moteur à combustion Expired - Lifetime EP0899042B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19735012A DE19735012C1 (de) 1997-08-13 1997-08-13 Verfahren zur Herstellung eines gegossenen Zylinderkopfes
DE19735012 1997-08-13

Publications (2)

Publication Number Publication Date
EP0899042A1 true EP0899042A1 (fr) 1999-03-03
EP0899042B1 EP0899042B1 (fr) 2001-11-28

Family

ID=7838814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113967A Expired - Lifetime EP0899042B1 (fr) 1997-08-13 1998-07-25 Méthode de fabrication d'une culasse moulée pour un moteur à combustion

Country Status (5)

Country Link
US (1) US6009844A (fr)
EP (1) EP0899042B1 (fr)
JP (1) JP3106397B2 (fr)
DE (1) DE19735012C1 (fr)
ES (1) ES2168707T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999038629A1 (fr) * 1998-01-31 1999-08-05 Volkswagen Aktiengesellschaft Procede pour produire une culasse de moteur a combustion interne
FR2792858A1 (fr) * 1999-04-30 2000-11-03 Renault Procede, dispositif et noyau pour la realisation par moulage d'une culasse de moteur a combustion interne
DE102014202034A1 (de) * 2014-02-05 2015-08-06 Volkswagen Aktiengesellschaft Kokille zur Herstellung von Gussteilen

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145876A1 (de) * 2001-09-18 2003-04-10 Daimler Chrysler Ag Vorrichtung zur Herstellung eines Druckgussbauteils mit einem Kern und einem Einlegeteil
DE10339653A1 (de) * 2003-08-28 2005-03-24 Deutz Ag Gießkernminimierter Zylinderkopf
DE102006031532B3 (de) * 2006-07-07 2008-04-17 Emil Müller GmbH Wasserlöslicher Salzkern mit Funktionsbauteil
CN102896279B (zh) * 2012-09-10 2014-09-24 江苏武蕾机械有限公司 一种使用冷芯技术生产单缸柴油机气缸盖水道砂芯的工艺
CN103008562A (zh) * 2012-11-27 2013-04-03 天长缸盖有限公司 一种整体缸盖铸造立浇设备
CN104475687A (zh) * 2014-12-31 2015-04-01 南阳飞龙汽车零部件有限公司 一种壳模铸造铸型排气砂芯
CN104707939B (zh) * 2015-04-08 2016-08-24 广西玉柴机器股份有限公司 柴油机缸盖的铸造砂芯
CN108421956B (zh) * 2018-04-11 2019-08-06 安徽江淮汽车集团股份有限公司 发动机缸盖铸造模具及缸盖
DE102023125649B3 (de) 2023-09-21 2025-02-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kernpaket und Zylinderkopf
CN117816913B (zh) * 2023-12-28 2024-06-21 安徽祥东高端装备股份有限公司 一种组合式泵体机壳铸造模具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148647A (en) * 1980-04-22 1981-11-18 Nissan Motor Co Ltd Cooling water jacket of internal combustion engine cylinder head
US4690104A (en) * 1985-05-24 1987-09-01 Toyota Jidosha Kabushiki Kaisha Cylinder head with inwardly projecting cup plug in casting sand extraction hole for speeding up coolant flow

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165095A (en) * 1962-05-18 1965-01-12 Beteiligungs & Patentverw Gmbh Cylinder head
DE3707256C1 (en) * 1987-03-06 1988-07-07 Halbergerhuette Gmbh Core for the casting of grey cast iron cylinder blocks
JP3498446B2 (ja) * 1995-10-26 2004-02-16 日産自動車株式会社 火花点火機関用シリンダヘッド

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148647A (en) * 1980-04-22 1981-11-18 Nissan Motor Co Ltd Cooling water jacket of internal combustion engine cylinder head
US4690104A (en) * 1985-05-24 1987-09-01 Toyota Jidosha Kabushiki Kaisha Cylinder head with inwardly projecting cup plug in casting sand extraction hole for speeding up coolant flow

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 033 (M - 114) 27 February 1982 (1982-02-27) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999038629A1 (fr) * 1998-01-31 1999-08-05 Volkswagen Aktiengesellschaft Procede pour produire une culasse de moteur a combustion interne
FR2792858A1 (fr) * 1999-04-30 2000-11-03 Renault Procede, dispositif et noyau pour la realisation par moulage d'une culasse de moteur a combustion interne
DE102014202034A1 (de) * 2014-02-05 2015-08-06 Volkswagen Aktiengesellschaft Kokille zur Herstellung von Gussteilen

Also Published As

Publication number Publication date
US6009844A (en) 2000-01-04
DE19735012C1 (de) 1998-09-03
ES2168707T3 (es) 2002-06-16
EP0899042B1 (fr) 2001-11-28
JP3106397B2 (ja) 2000-11-06
JPH11151559A (ja) 1999-06-08

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