EP0979937B1 - Zylinderkopf einer Mehrzylinder-Brennkraftmaschine - Google Patents
Zylinderkopf einer Mehrzylinder-Brennkraftmaschine Download PDFInfo
- Publication number
- EP0979937B1 EP0979937B1 EP99112076A EP99112076A EP0979937B1 EP 0979937 B1 EP0979937 B1 EP 0979937B1 EP 99112076 A EP99112076 A EP 99112076A EP 99112076 A EP99112076 A EP 99112076A EP 0979937 B1 EP0979937 B1 EP 0979937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- wall
- bolt
- region
- base
- 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
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
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
Definitions
- the invention relates to a cylinder head of a multi-cylinder internal combustion engine according to the preamble of the claim 1.
- a cylinder head is shown at between the cylinder head floor and the cylinder head cover Supporting walls are provided, which in itself up to the cylinder head floor extending pipes for receiving the cylinder head bolts are formed.
- the length of the screw pipes can be at that version about 2/3 of the distance between the floor and the ceiling of the cylinder head be.
- the present invention deals with the problem of the cylinder head bolts in there area, in which they are due to the power transmission reasons Missing screw pipe wall exposed to the cooling water attack are to protect against such an attack. Through this Protection should, however, in the execution of the older Registration chosen for power transmission reasons chosen spacing the screw pipe ends from the bottom of the cylinder head be functionally maintained. The same goes for the Connection of the transverse walls to the screw pipes near the ground Area of the cylinder head.
- the invention is based on the general idea, the cylinder head bolts in the area in the execution after the aforementioned earlier patent application by the shortened screwpipe this is no longer protected against a cooling water attack, by a separate, non-fuel-carrying designed Partition to protect.
- This partition can be integrated component be the screwpipe. She may only with Reference to a recording of the clamping force of the cylinder head bolt do not exercise a force-supporting function.
- the partition wall function can also be a separately mounted sleeve fulfill, if this opposite the free expiring end the screw pipe on the one hand and against the bottom of the Cylinder head is sealed on the other hand.
- the cylinder head cutout shown in the drawing shows with a view of the not shown as such Bottom of the cylinder head essentially that of the bottom area extending to the top of the cylinder head lateral boundary walls of the individual cylinders in the cylinder head assigned cooling water spaces.
- each screw pipes 6 for receiving and guiding the cylinder head on the Crankcase fixing cylinder head bolts provided.
- the first wall thickness region 7 is force-transmitting for the formed by the cylinder head bolts clamping forces.
- the second wall thickness region 8 only satisfies the Function of a non-supporting partition to separate the Screwpipe interior from adjacent cooling water chambers 4. A force-transmitting function comes these wall thickness ranges 8 not too. These wall thickness regions 8 are rather deliberately dimensioned so that they are not force-absorbing or force-transmitting function with respect to the exercise the outgoing clamping forces of the cylinder head bolts can.
- An ideal wall thickness training exists in the area 8 in that through these wall areas over the Longitudinal side walls 1 and the transverse walls 2 and 3 take place Power transmissions are done in such a way as if the second Wall areas 8 would not exist at all.
- the wall thicknesses in the area 8 are designed so that these wall areas just can be produced as a casting.
- the second wall thickness regions 8 of the screw pipes 6 can also by separately used parts such as Sleeves for any operational requirements Material exist. Such sleeves are possibly only tight with the first wall thickness regions 7 of the screw pipes 6 and the bottom of the cylinder head to connect.
- the second wall thickness regions 8 are only intended to serve a fluid-barrier separation between the cooling water spaces 4 on the one hand and the interior of the screw pipes. 6 on the other hand, in which the cylinder head bolts run, allow and make sure.
- the reason for this separation is in that the cylinder head bolts materially attacked by the cooling water fatigue damage can be. Cylinder head bolts, which are an attack of the Therefore, cooling water must be exposed to a special, comparatively expensive material. It insists Endeavor to use cylinder head bolts like this avoid expensive materials for economic reasons.
- the embodiment of the invention carries with a separation the screws from the cooling water at.
- the inner diameter of the screw pipes 6 can be such be designed that when used cylinder head bolts a free, circulating between the two parts annular space remains.
- the cooling water inflow and outflow into the individual cooling water spaces 4 takes place through the longitudinal side walls 1 through openings 11 therethrough.
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
- eine perspektivische Ansicht eines Ausschnittes aus einem Zylinderkopf mit Blick auf dessen auf das Kurbelgehäuse aufzusetzenden Unterseite.
Claims (7)
- Zylinderkopf einer Mehrzylinder-Brennkraftmaschine, bestehend aus insbesondere einem Gußstück mit von einem Boden, einer Decke (5) und Längsseitenwänden (1) begrenzten Kühlwasserräumen (4), durch die sich von jedem einem Zylinder zugeordneten Brennraum mindestens ein Einlaßkanal zu der einen der beiden Längsseitenwände (1) und mindestens ein Auslaßkanal zu der anderen der beiden Längsseitenwände (1) erstreckt, und mit an die Decke (5) für Zylinderkopfschrauben angeformten Schraubenpfeifen (6) und an diese angeformten Querwänden (2, 3) die sich bis zum Boden des Zylinderkopfes erstrecken,
dadurch gekennzeichnet, daß die wand der Schraubenpfeifen (6) in jeweils demjenigen Umfangswandbereich, der den von den Längsseitenwänden (1) und Querwänden (2, 3) umschlossenen Kühlwasserräumen (4) zugewandt ist, in einem von dem Boden ausgehenden, mit Abstand von der Decke (5) endenden Bereich (8) als lediglich fluidstromsperrende, nicht kraftübertragend ausgelegte Trennwand zwischen dem jeweiligen Schraubenpfeifeninnenraum und den angrenzenden Kühlwasserräumen (4) ausgebildet ist. - Zylinderkopf nach Anspruch 1,
dadurch gekennzeichnet, daß die Länge, innerhalb der die Schraubenpfeifen (6) lediglich Trennwandfunktion besitzen, etwa ein Drittel des Abstandes zwischen dem Boden und der Decke (5) des Zylinderkopfes beträgt. - Zylinderkopf nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die zwischen benachbarten Kühlwasserräumen (4) liegenden Querwände (3) in ihren Endbereichen, in denen sie an den ausschließlich als Trennwand ausgebildeten zweiten Wanddickenbereich (8) der Schraubenpfeifen (6) angrenzen, eine verminderte Wanddicke aufweisen, wobei dieser verminderte Wanddickenbereich in Querwandlängsrichtung in dem in Querwandhöhe liegenden Grenzbereich zwischen tragendem und nicht tragendem Wandbereich der Schraubenpfeife (6) mit einem geringsten Wert beginnt und bei kontinuierlich zunehmender Ausdehnung an dem Boden des Zylinderkopfes mit einem größten Wert endet. - Zylinderkopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der zweite Trennwandfunktion besitzende Wanddickenbereich (8) jeder Schraubenpfeife (6) als ein eigenständiges Teil ausgebildet und dicht zwischen dem ersten Bereich (7) der Schraubenpfeife (6) und dem Boden des Zylinderkopfes eingespannt ist. - Zylinderkopf nach Anspruch 4,
dadurch gekennzeichnet, daß das eigenständige Teil aus einem anderen Material als die Schraubenpfeife (6) besteht. - Zylinderkopf nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß das eigenständige Teil eine Hülse ist. - Zylinderkopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß zwischen Zylinderkopfschrauben und Schraubenpfeifen (6) jeweils ein nach außen dichter Ringraum ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19836441A DE19836441C1 (de) | 1998-08-12 | 1998-08-12 | Zylinderkopf einer Mehrzylinder-Brennkraftmaschine |
DE19836441 | 1998-08-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0979937A2 EP0979937A2 (de) | 2000-02-16 |
EP0979937A3 EP0979937A3 (de) | 2000-11-29 |
EP0979937B1 true EP0979937B1 (de) | 2003-12-10 |
Family
ID=7877242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99112076A Expired - Lifetime EP0979937B1 (de) | 1998-08-12 | 1999-06-23 | Zylinderkopf einer Mehrzylinder-Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
US (1) | US6109233A (de) |
EP (1) | EP0979937B1 (de) |
DE (2) | DE19836441C1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10328459A1 (de) * | 2003-06-25 | 2005-01-13 | Daimlerchrysler Ag | Zylinderkopf einer flüssigkeitsgekühlten Brennkraftmaschine |
DE10329443B4 (de) * | 2003-07-01 | 2012-04-26 | Alexander Berndt | Zylinderkopf für eine Brennkraftmaschine |
DE102004005796B4 (de) * | 2004-02-06 | 2014-01-16 | Daimler Ag | Zylinderkopf für eine Brennkraftmaschine |
DE102006021175A1 (de) * | 2006-05-06 | 2007-11-08 | Bayerische Motoren Werke Ag | Zylinderkopf für eine Brennkraftmaschine |
JP4961027B2 (ja) * | 2010-03-17 | 2012-06-27 | 本田技研工業株式会社 | 内燃機関のシリンダヘッド内冷却水通路構造 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB281484A (en) * | 1926-12-21 | 1927-12-08 | Coventry Climax Eng Ltd | Improvements in detachable cylinder heads for internal combustion engines |
JPS61167145A (ja) * | 1985-01-19 | 1986-07-28 | Mazda Motor Corp | Dohc多気筒エンジンのシリンダヘツド構造 |
DE3513126A1 (de) * | 1985-04-12 | 1986-10-30 | Daimler-Benz Ag, 7000 Stuttgart | Fluessigkeitsgekuehlter vierventil-zylinderkopf fuer eine mehrzylindrige brennkraftmaschine |
DE19644530C1 (de) * | 1996-10-26 | 1998-02-12 | Daimler Benz Ag | Zylinderkopf für eine Mehrzylinder-Brennkraftmaschine |
US5873331A (en) * | 1997-03-29 | 1999-02-23 | Daimler-Benz A.G. | Cylinder head for a multi-cylinder internal combustion engine |
DE19713246C2 (de) * | 1997-03-29 | 1999-01-21 | Daimler Benz Ag | Zylinderkopf einer Mehrzylinder-Brennkraftmaschine |
-
1998
- 1998-08-12 DE DE19836441A patent/DE19836441C1/de not_active Expired - Fee Related
-
1999
- 1999-06-23 DE DE59907998T patent/DE59907998D1/de not_active Expired - Lifetime
- 1999-06-23 EP EP99112076A patent/EP0979937B1/de not_active Expired - Lifetime
- 1999-08-09 US US09/370,195 patent/US6109233A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0979937A3 (de) | 2000-11-29 |
DE19836441C1 (de) | 1999-11-11 |
DE59907998D1 (de) | 2004-01-22 |
EP0979937A2 (de) | 2000-02-16 |
US6109233A (en) | 2000-08-29 |
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