EP0899445B1 - Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen Brennkraftmaschine - Google Patents
Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen Brennkraftmaschine Download PDFInfo
- Publication number
- EP0899445B1 EP0899445B1 EP98114792A EP98114792A EP0899445B1 EP 0899445 B1 EP0899445 B1 EP 0899445B1 EP 98114792 A EP98114792 A EP 98114792A EP 98114792 A EP98114792 A EP 98114792A EP 0899445 B1 EP0899445 B1 EP 0899445B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- internal combustion
- combustion engine
- cylinder
- screw
- 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.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 16
- 239000007788 liquid Substances 0.000 title 1
- 239000002826 coolant Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000000498 cooling water Substances 0.000 description 10
- 238000009826 distribution Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000036316 preload Effects 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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
- 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
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
-
- 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
Definitions
- the invention relates to a liquid-cooled cylinder head a multi-cylinder internal combustion engine according to the Preamble of claim 1.
- JP-PS 59 96 341 is a generic liquid-cooled Cylinder head for a multi-cylinder internal combustion engine known.
- the cylinder head has conventional screw pipes for the cylinder head bolts on which the clamping forces of the cylinder head bolts on the small cross section of the whistle of lead the ceiling to the bottom plate of the cylinder head.
- the bolt clamping forces also in the ground areas between the Distributing screw pipes is between the screw pipes a T-shaped bending beam arranged over a rib is connected to the gas exchange channels and the bolt clamping forces should also lead to the intermediate areas.
- a disadvantage of such an embodiment for distributing the Screw clamping forces that the introduction of force is too uneven over the above-mentioned bending beam to an optimal uniform distribution of forces also in the area to reach between the screw pipes, given the rigidity the continuous screw whistles over their length only a small Force introduction into the bending beam permits.
- the over the Bending medium in the combustion chamber boundary of the cylinder head floor initiated bias is therefore low and holds one increased gas pressure of the internal combustion engine not stood.
- a uniform surface pressure between the cylinder head and the crankcase arranged cylinder head gasket so an optimal To ensure sealing is therefore not possible.
- Another disadvantage of the design is the enormous space requirement of the bending beam, whereby this execution at very cramped space in the cylinder head not applicable is, especially if for a better distribution of forces the bending beam should be designed stronger.
- the invention is based on the object, a liquid-cooled Cylinder head of a multi-cylinder internal combustion engine to create, with the even in tight spaces one highest possible and uniform surface pressure of the cylinder head gasket also in the areas between the cylinder head bolts to achieve.
- An advantage of the invention is the simplification of Screw pipes, in the adjacent wall sections of the gas exchange channels Thickened in the area of the cylinder head bolts are formed and thereby form ribs, which are part of Screw pipes are.
- the screw pipes are not formed as a continuous columns.
- the simplification of Screw pipes pulls a lighter weight of the cylinder head after himself.
- Another significant advantage lies in the optimal distribution of forces of the bolt clamping force over the Screw pipes in the cylinder head. Because the screw pipes are not are designed as "conventional columns" which the Screw force only on the small column cross section of the Ceiling lead to the bottom of the cylinder head, but in the connection to a columnar portion ribs comprising a directed distribution of forces in the areas between the Cylinder head bolts allow.
- the bolt tension of the Cylinder head bolts may be in the shortly after the introduction conventional columnar section of the screw pipe distribute over the adjoining ribs in the cylinder head, causing the surface pressure on the cylinder head gasket evened, especially for the benefit of the areas in the middle under the gas exchange channels. This ensures that the surface pressure acting on the cylinder head gasket the resulting during operation of the internal combustion engine enormous gas forces due to the even distribution of forces the bolt clamping forces better withstands.
- the cylinder head After starting the engine, the cylinder head will heat up and the crankcase of the internal combustion engine and This will also heat up the cooling water very quickly. advantageously, are therefore the cylinder head bolts over a Part of their length from a section of the cooling water space completely surrounded, which they also very much on the cooling water quickly brought to the temperature of the surrounding components become. Because the cylinder head bolts are parallel to the cylinder head as well as warm up to the crankcase and thereby likewise expand, becomes excessive stress on the cylinder head material avoided, which makes it possible on the previous conventional screwpipe (pillar) to dispense.
- pillar screwpipe
- a liquid-cooled cylinder head 1 for a Not shown multi-cylinder internal combustion engine the left half being a first embodiment and the right half a second embodiment of the invention represents.
- the cylinder head 1 has a cooling water chamber 2 (see FIG. 2), of which in Fig. 1, only the inlet 2a is shown. Of the Cooling water space 2 is down from a cylinder head bottom. 3 and up from a distance above the cylinder head floor 3 arranged cylinder head cover 4 limited. In the second embodiment the cylinder head 1 additionally has one in the inlet 2a arranged, downwardly projecting projection 16th on.
- cylinder head clamping screws 8 is the cylinder head 1 with the interposition of one here Not shown cylinder head gasket with a crankcase 9 of the internal combustion engine detachably connected.
- the pressing of the Cylinder head 1 to the crankcase 9 and thus the bracing the cylinder head gasket between cylinder head 1 and crankcase 9 takes place when tightening the cylinder head screws. 8 with the necessary bolt preload.
- the cylinder head bolts extend 8 free through a section, in this case the inlet 2a, the Cooling water space 2 in the cylinder head 1 and through a cooling water space section 10 in the crankcase 9.
- the cylinder head bolts 8 are thereby flowed around by the cooling water and quickly to the Temperature of the surrounding components 1, 9 brought.
- the cylinder head bolts 8 are described in more detail below screw threads 11 of the cylinder head 1 passed, which for Distribution of the bolt clamping forces of the cylinder head bolts 8 serve from the cylinder head cover 4 to the cylinder head floor 3.
- the screw pipes 11 for the cylinder head bolts 8 partially through adjacent wall sections 12th in particular similar gas exchange channels 5, such as Inlet channels, formed, wherein the wall sections 12 in Area of the cylinder head bolts 8 to form ribs 13th thickened are formed.
- the screw pipes 11 causes a distribution of the bolt clamping forces in areas 14 below the gas exchange channels. 5 (see Fig. 1).
- the force is introduced by the cylinder head bolt 8 in the cylinder head 1 and the subsequent distribution of forces via the ribs 13 in the regions 14 below the gas exchange channels 5 marked with dash-dotted arrows 15, wherein the projection 16 in the second embodiment, no Influence on this distribution of forces, because the projection 16 is not supported from below, but free in the inlet 2a or the cooling water space portion 10 protrudes.
- the preload out the rib 13 is characterized by their particular Anformung to the wall sections 12 of the gas exchange channels 5 in the direction of arrow 15 on the Cylinder head gasket aligned, which also in the cylinder head bolts 8 adjacent areas 14 between the Gas exchange channels 5 a sufficient surface pressure on the Seal is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
- Fig. 1
- einen Teil eines Längsschnitts durch einen flüssigkeitsgekühlten Zylinderkopf einer mehrzylindrigen Brennkraftmaschine, der mit einem Kurbelgehäuse der Brennkraftmaschine verbunden ist, und
- Fig. 2
- einen Teil eines Schnittes durch den Zylinderkopf der Brennkraftmaschine gemäß Linie II-II aus Fig. 1.
- ARmin =
- erforderlicher Mindestquerschnitt der Rippe,
- dK =
- Dicke der Gaswechselkanalwand,
- dV =
- Dicke der einen Teil der Rippe bildenden Verdickung,
- bV =
- Breite der Verdickung,
- FS =
- Schraubenkraft der Zylinderkopfschraube und
- σSstreck =
- Streckgrenze der Zylinderkopfschraube.
Claims (2)
- Flüssigkeitsgekühlter Zylinderkopf für eine mehrzylindrige Brennkraftmaschine mit einem Kühlwasserraum, in dem in Richtung einer Motorquerachse verlaufende Gaswechselkanäle und mindestens eine Kammer für eine Zündkerze und/oder eine Einspritzdüse angeordnet sind, und mit Schraubenpfeifen zur Verteilung der Schraubenspannkräfte der Zylinderkopfschrauben, wobei der Zylinderkopf unter Zwischenschaltung einer Zylinderkopfdichtung mit einem Kurbelgehäuse der Brennkraftmaschine verbindbar ist,
dadurch gekennzeichnet, daß benachbarte Wandabschnitte (12) der Gaswechselkanäle (5) im Bereich der Zylinderkopfschrauben (8) zur Bildung von Rippen (13) verdickt ausgeformt sind, die Teil der Schraubenpfeifen (11) sind. - Flüssigkeitsgekühlter Zylinderkopf für eine mehrzylindrige Brennkraftmaschine nach Anspruch 1,
dadurch gekennzeichnet, daß die Zylinderkopfschrauben (8) über mindestens einen Teil ihrer Länge von Kühlwasser vollständig umgeben sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19737492 | 1997-08-28 | ||
| DE19737492A DE19737492C1 (de) | 1997-08-28 | 1997-08-28 | Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen Brennkraftmaschine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0899445A2 EP0899445A2 (de) | 1999-03-03 |
| EP0899445A3 EP0899445A3 (de) | 2000-01-12 |
| EP0899445B1 true EP0899445B1 (de) | 2003-02-26 |
Family
ID=7840435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98114792A Expired - Lifetime EP0899445B1 (de) | 1997-08-28 | 1998-08-06 | Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen Brennkraftmaschine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6129064A (de) |
| EP (1) | EP0899445B1 (de) |
| DE (1) | DE19737492C1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009041708A1 (de) * | 2009-09-16 | 2011-03-24 | GM Global Technology Operations, Inc., Detroit | Schraubenpfeife für einen Zylinderkopf einer Brennkraftmaschine, Zylinderkopf, Brennkraftmaschine und Fahrzeug sowie Verfahren zur Herstellung einer Schraubenpfeife |
| RU2552018C1 (ru) * | 2011-04-11 | 2015-06-10 | Тойота Дзидося Кабусики Кайся | Головка блока цилиндров двигателя внутреннего сгорания |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1220202B (de) * | 1964-05-08 | 1966-06-30 | Daimler Benz Ag | Anordnung von Zylinderlaufbuchsen, insbesondere von nassen Zylinderlaufbuchsen bei Brennkraftmaschinen |
| DE1301655C2 (de) * | 1965-01-12 | 1970-04-23 | Daimler Benz Ag | Brennkraftmaschine mit fluessigkeitsgekuehlten Zylinderlaufbuchsen |
| DE2143734B2 (de) * | 1971-09-01 | 1973-10-04 | Daimler-Benz Ag, 7000 Stuttgart | Brennkraftmaschine mit einem in den Durchgang fur das Kuhlwasser zwischen Zylinderkopf und Kurbeigehause einge setzten Zwischenrohr |
| DE3228922A1 (de) * | 1982-08-03 | 1984-02-09 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Verbindung von vorzugsweise dynamisch hochbeanspruchten maschinenteilen durch mehrere lange schrauben und mehrere kurze schrauben |
| JPS5996341A (ja) * | 1982-11-22 | 1984-06-02 | 株式会社 中井(保)組 | 土中への筒体設置方法 |
| JPS5996341U (ja) * | 1982-12-20 | 1984-06-29 | マツダ株式会社 | エンジンのシリンダヘツド構造 |
| DE3513126C2 (de) * | 1985-04-12 | 1987-02-12 | Daimler-Benz Ag, 7000 Stuttgart | Flüssigkeitsgekühlter Vierventil-Zylinderkopf für eine mehrzylindrige Brennkraftmaschine |
| DE3545333A1 (de) * | 1985-12-20 | 1987-07-02 | Kloeckner Humboldt Deutz Ag | Zylinderkopf |
| DE3616629A1 (de) * | 1986-05-16 | 1987-11-19 | Audi Ag | Brennkraftmaschine |
| DE3726027A1 (de) * | 1987-08-05 | 1989-02-16 | Alcan Gmbh | Waermebeaufschlagtes bauteil |
| DE3836117C1 (en) * | 1988-10-22 | 1989-07-27 | Krupp Mak Maschinenbau Gmbh, 2300 Kiel, De | Cylinder head for internal combustion engines |
| DE3922885A1 (de) * | 1989-07-12 | 1991-01-17 | Man Nutzfahrzeuge Ag | Zylinderkopfdichtung fuer hubkolbenmaschinen, insbesondere brennkraftmaschinen |
| DE4223780C2 (de) * | 1992-07-18 | 1996-04-11 | Bayerische Motoren Werke Ag | Schraubverbindung für einen Zylinderkopf einer Brennkraftmaschine |
| IT1270244B (it) * | 1993-07-23 | 1997-04-29 | Porsche Ag | Accoppiamento a viti della testa cilindri di un motore a combustione interna |
| US5630389A (en) * | 1995-09-29 | 1997-05-20 | Self; Kevin G. | Cylinder head bolt plug |
| SE503873C2 (sv) * | 1995-10-13 | 1996-09-23 | Scania Cv Ab | Anordning för avtätning av en förbränningsmotors förbränningsrum |
| DE19644530C1 (de) * | 1996-10-26 | 1998-02-12 | Daimler Benz Ag | Zylinderkopf für eine Mehrzylinder-Brennkraftmaschine |
-
1997
- 1997-08-28 DE DE19737492A patent/DE19737492C1/de not_active Expired - Fee Related
-
1998
- 1998-08-06 EP EP98114792A patent/EP0899445B1/de not_active Expired - Lifetime
- 1998-08-28 US US09/143,626 patent/US6129064A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19737492C1 (de) | 1998-10-29 |
| EP0899445A2 (de) | 1999-03-03 |
| EP0899445A3 (de) | 2000-01-12 |
| US6129064A (en) | 2000-10-10 |
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