EP0899042A1 - Verfahren zur Herstellung eines gegossenen Zylinderkopfes - Google Patents
Verfahren zur Herstellung eines gegossenen Zylinderkopfes Download PDFInfo
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 4
- 238000006073 displacement reaction Methods 0.000 claims abstract description 33
- 238000005266 casting Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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)
Abstract
Description
- Fig. 1
- einen Schnitt durch eine Gießform für einen erfindungsgemäßen Zylinderkopf mit einem Verdrängungskörper im Bereich der Ein- und Auslaßkanäle; und
- Fig. 2
- einen weiteren Schnitt durch die Gießform für den Zylinderkopf mit dem Verdrängungskörper aus Fig. 1.
Claims (12)
- Verfahren zur Herstellung eines gegossenen Zylinderkopfes für eine Brennkraftmaschine in einer Gießform, wobei zur Bildung des Zylinderkopfes ein Hohlraum zwischen einem Oberteil und einem Unterteil der Gießform verbleibt, und wobei zur Bildung eines Wasserraumes für den Zylinderkopf ein Sandkern in die Gießform eingelegt wird,
dadurch gekennzeichnet, daß
vor dem Gießvorgang ein Verdrängungskörper (10) in den Sandkern (8) für den Wasserraum eingebracht wird, welcher nach dem Gießvorgang in dem Wasserraum verbleibt. - Verfahren zur Herstellung eines gegossenen Zylinderkopfes nach Anspruch 1,
dadurch gekennzeichnet, daß
der Verdrängungskörper (10) mit dem Gießsand für den Sandkern (8) besandet wird. - Verfahren zur Herstellung eines gegossenen Zylinderkopfes nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
der Sandkern (8) im Kernlager (9) eingelegt wird. - Verfahren zur Herstellung eines gegossenen Zylinderkopfes nach Anspruch 1 , 2 oder 3,
dadurch gekennzeichnet, daß
sich während des Gießvorganges der Werkstoff des Zylinderkopfes mit dem Verdrängungskörper (10) an festgelegten Fixierbereichen (11) verbindet. - Verfahren zur Herstellung eines gegossenen Zylinderkopfes nach Anspruch 4,
dadurch gekennzeichnet, daß
sich die Fixierbereiche (11) in unmittelbarer Nähe der Kernlager (9) befinden. - Verfahren zur Herstellung eines gegossenen Zylinderkopfes nach Anspruch 1,
dadurch gekennzeichnet, daß
der Verdrängungskörper (10) nach dem Gießvorgang frei schwimmend in dem Wasserraum verbleibt. - Gegossener Zylinderkopf für eine Brennkraftmaschine mit einem durch einen Sandkern gebildeten Wasserraum, hergestellt nach dem Verfahren gemäß einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß
in dem Wasserraum ein bei dem Gießvorgang innerhalb des Sandkerns (8) eingebrachter Verdrängungskörper (10) angeordnet ist. - Gegossener Zylinderkopf nach Anspruch 7,
dadurch gekennzeichnet, daß
an dem Verdrängungskörper (10) als Verschlußscheiben (11) ausgebildete Fixierbereiche angebracht sind. - Gegossener Zylinderkopf nach Anspruch 7,
dadurch gekennzeichnet, daß
der Verdrängungskörper (10) frei schwimmend in dem Wasserraum angeordnet ist. - Gegossener Zylinderkopf nach Anspruch 9,
dadurch gekennzeichnet, daß
an der Oberseite des Hohlraums (5) oder an der Oberseite des Verdrängungskörpers (10) Abstandshalte angeordnet sind. - Gegossener Zylinderkopf nach einem der Ansprüche 7 bis 10,
dadurch gekennzeichnet, daß
der Verdrängungskörper (10) als Spoiler für eine Strömung in dem Wasserraum ausgebildet ist. - Gegossener Zylinderkopf nach einem der Ansprüche 7 bis 11,
dadurch gekennzeichnet, daß
der Verdrängungskörper (10) zur Versteifung des Zylinderkopfes Strukturelemente wie Pfosten oder Rippen enthält.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19735012 | 1997-08-13 | ||
DE19735012A DE19735012C1 (de) | 1997-08-13 | 1997-08-13 | Verfahren zur Herstellung eines gegossenen Zylinderkopfes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0899042A1 true EP0899042A1 (de) | 1999-03-03 |
EP0899042B1 EP0899042B1 (de) | 2001-11-28 |
Family
ID=7838814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98113967A Expired - Lifetime EP0899042B1 (de) | 1997-08-13 | 1998-07-25 | Verfahren zur Herstellung eines gegossenen Zylinderkopfes |
Country Status (5)
Country | Link |
---|---|
US (1) | US6009844A (de) |
EP (1) | EP0899042B1 (de) |
JP (1) | JP3106397B2 (de) |
DE (1) | DE19735012C1 (de) |
ES (1) | ES2168707T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999038629A1 (de) * | 1998-01-31 | 1999-08-05 | Volkswagen Aktiengesellschaft | Verfahren zum herstellen eines zylinderkopfes einer brennkraftmaschine |
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 (9)
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 |
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)
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)
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 |
-
1997
- 1997-08-13 DE DE19735012A patent/DE19735012C1/de not_active Expired - Fee Related
-
1998
- 1998-07-25 EP EP98113967A patent/EP0899042B1/de not_active Expired - Lifetime
- 1998-07-25 ES ES98113967T patent/ES2168707T3/es not_active Expired - Lifetime
- 1998-08-07 JP JP10255913A patent/JP3106397B2/ja not_active Expired - Fee Related
- 1998-08-13 US US09/133,428 patent/US6009844A/en not_active Expired - Lifetime
Patent Citations (2)
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)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 033 (M - 114) 27 February 1982 (1982-02-27) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999038629A1 (de) * | 1998-01-31 | 1999-08-05 | Volkswagen Aktiengesellschaft | Verfahren zum herstellen eines zylinderkopfes einer brennkraftmaschine |
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 |
---|---|
JPH11151559A (ja) | 1999-06-08 |
JP3106397B2 (ja) | 2000-11-06 |
DE19735012C1 (de) | 1998-09-03 |
ES2168707T3 (es) | 2002-06-16 |
EP0899042B1 (de) | 2001-11-28 |
US6009844A (en) | 2000-01-04 |
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