EP0979937A2 - Culasse pour un moteur à combustion interne à plusieurs cylindres - Google Patents

Culasse pour un moteur à combustion interne à plusieurs cylindres Download PDF

Info

Publication number: EP0979937A2
Authority: EP; European Patent Office
Prior art keywords: cylinder head; screw; cylinder; cooling water; area
Prior art date: 1998-08-12
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

EP99112076A

Other languages

German (de)

English (en)

Other versions

EP0979937A3 (fr

EP0979937B1 (fr

Inventor

Bernhard Jutz

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

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.)

1998-08-12

Filing date

1999-06-23

Publication date

2000-02-16

1999-06-23 Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG

2000-02-16 Publication of EP0979937A2 publication Critical patent/EP0979937A2/fr

2000-11-29 Publication of EP0979937A3 publication Critical patent/EP0979937A3/fr

2003-12-10 Application granted granted Critical

2003-12-10 Publication of EP0979937B1 publication Critical patent/EP0979937B1/fr

2019-06-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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 that between the cylinder head floor and the cylinder head cover Retaining walls are provided, which in themselves up to the cylinder head floor extending pipes to accommodate the cylinder head screws are molded.
the length of the screw pipes can be about that version 2/3 of the distance between the floor and the ceiling of the cylinder head be.
the present invention is concerned with the problem the cylinder head bolts that are in the area there in which, due to the power transmission reasons missing screw pipe wall exposed to the cooling water attack are to protect against such an attack.
protection is said to apply to the older version Registration spacing selected for power transmission reasons 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 floor Area of the cylinder head.
the invention is based on the general idea of cylinder head screws in that area when executing after the earlier patent application mentioned at the beginning through the shortened screw pipe it is no longer protected against a cooling water attack, through a separate, non-fuel-transfer designed Protect partition.
This partition can be an integral part the screw pipe. You may only with Reference to a recording of the clamping force of the cylinder head screw do not perform a force-supporting function.
the partition function can also be a separately attached sleeve meet if this is opposite the free end the screw pipe on the one hand and opposite the bottom of the Cylinder head is sealed on the other hand.
the cylinder head cutout shown in the drawing shows with a look at 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 cooling water rooms assigned in the cylinder head.
leading inlet and outlet channels penetrate each the long side walls 1. This penetration of the long side walls 1 is in each case through openings drawn in these indicated.
screw pipes 6 for receiving and guiding the cylinder head on the Crankcase fixing cylinder head screws are provided.
the screw pipes 6 Extend from the top of the cylinder head the screw pipes 6 over a first area 7 with a first wall thickness and then run in one second area 8 with a second wall thickness down to the bottom of the cylinder head. Between the first and the second The screw pipes have a wall thickness range of 7 and 8 respectively Level 9 on.
the first wall thickness area 7 is force-transmitting for the clamping forces generated by the cylinder head bolts.
the second wall thickness range 8 only fulfills that Function of a non-load-bearing partition to separate the Screw pipe interior from the adjacent cooling water rooms 4. A force-transmitting function comes to these wall thickness ranges 8 not too. These wall thickness ranges 8 will rather, consciously dimensioned such that they are not force-absorbing or force-transmitting function with reference to that of exert clamping forces on the cylinder head bolts can.
An ideal wall thickness formation exists in the area 8 in that through these wall areas over the Longitudinal side walls 1 and the transverse walls 2 and 3 taking place Power transmissions take place as if the second Wall areas 8 would not exist at all.
the second Wall thickness areas 8 of the screw pipes 6, the only Partition function have, integrated components of the longitudinal and transverse walls 1, 2, the structure being drawn overall is a casting.
the wall thicknesses in the area 8 are designed such that these wall areas just barely can be produced as a cast part.
the second wall thickness areas 8 of the screw pipes 6 can also by separately used parts such as Sleeves from any of the operational requirements Material. Such sleeves are possibly only tight with the first wall thickness areas 7 of the screw pipes 6 and the bottom of the cylinder head.
the second wall thickness areas 8 are only intended to serve a fluid-blocking separation between the cooling water rooms 4 on the one hand and the inside of the screw pipes 6 on the other hand, in which the cylinder head screws run and make sure. The reason for this separation is in that the cylinder head bolts material attacked by the cooling water, damaging durability can be. Cylinder head bolts that attack the Exposed to cooling water, must therefore from a special, comparatively expensive material. There is one Strive to use cylinder head bolts from such avoid expensive materials for economic reasons. To this end, the embodiment according to the invention has a partition the screws from the cooling water.
the inside diameter of the screw pipes 6 can be such be designed so that when cylinder head screws are used a free annular space between the two parts remains.
the cooling water inflow and outflow into the individual cooling water rooms 4 takes place through the longitudinal side walls 1 through openings 11 through it.

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)

EP99112076A 1998-08-12 1999-06-23 Culasse pour un moteur à combustion interne à plusieurs cylindres Expired - Lifetime EP0979937B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19836441		1998-08-12
DE19836441A DE19836441C1 (de)	1998-08-12	1998-08-12	Zylinderkopf einer Mehrzylinder-Brennkraftmaschine

Publications (3)

Publication Number	Publication Date
EP0979937A2 true EP0979937A2 (fr)	2000-02-16
EP0979937A3 EP0979937A3 (fr)	2000-11-29
EP0979937B1 EP0979937B1 (fr)	2003-12-10

Family

ID=7877242

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99112076A Expired - Lifetime EP0979937B1 (fr)	1998-08-12	1999-06-23	Culasse pour un moteur à combustion interne à plusieurs cylindres

Country Status (3)

Country	Link
US (1)	US6109233A (fr)
EP (1)	EP0979937B1 (fr)
DE (2)	DE19836441C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3513126A1 (de)	1985-04-12	1986-10-30	Daimler-Benz Ag, 7000 Stuttgart	Fluessigkeitsgekuehlter vierventil-zylinderkopf fuer eine mehrzylindrige brennkraftmaschine
DE19713246A1 (de)	1997-03-29	1998-10-01	Daimler Benz Ag	Zylinderkopf einer Mehrzylinder-Brennkraftmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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
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

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/fr not_active Expired - Lifetime
- 1999-08-09 US US09/370,195 patent/US6109233A/en not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3513126A1 (de)	1985-04-12	1986-10-30	Daimler-Benz Ag, 7000 Stuttgart	Fluessigkeitsgekuehlter vierventil-zylinderkopf fuer eine mehrzylindrige brennkraftmaschine
DE19713246A1 (de)	1997-03-29	1998-10-01	Daimler Benz Ag	Zylinderkopf einer Mehrzylinder-Brennkraftmaschine

Also Published As

Publication number	Publication date
EP0979937A3 (fr)	2000-11-29
DE19836441C1 (de)	1999-11-11
DE59907998D1 (de)	2004-01-22
EP0979937B1 (fr)	2003-12-10
US6109233A (en)	2000-08-29

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