Global Patent Index - EP 0979937 A2

EP 0979937 A2 2000-02-16 - Cylinder head for a multi-cylinder internal combustion engine

Title (en)

Cylinder head for a multi-cylinder internal combustion engine

Title (de)

Zylinderkopf einer Mehrzylinder-Brennkraftmaschine

Title (fr)

Culasse pour un moteur à combustion interne à plusieurs cylindres

Publication

EP 0979937 A2 (DE)

Application

EP 99112076 A

Priority

DE 19836441 A

Abstract (en)

[origin: DE19836441C1] The internal combustion engine cylinder head has integral bolt bores (6) in its periphery positioned in the partition wall and external wall joints defining a closed coolant chamber. The upper edges of the joint areas adjacent to the bores are cut away (8) to prevent transmission of loads through the bore walls while preserving sealing.

Abstract (de)

Im Zylinderkopf einer Mehrzylinder-Brennkraftmaschine sind am Umfang jedes einem Zylinder zugeordneten Brennraumes zwischen benachbarten Schraubenpfeifen für die Zylinderkopfschrauben an dieser angeformte, in Quer- und Längsrichtung des Zylinderkopfes verlaufende Wände vorgesehen, die sich bis zum Zylinderkopfboden erstrecken. Um die Schraubenkräfte überwiegend auf die Längs- und Querwände übertragen zu können und eine Anpressung des Zylinderkopfes insbesondere über den Umfang jedes Brennraumes zu erreichen, endet die Tragfunktion der Schraubenpfeifen jeweils in einem Abstand vom Zylinderkopfboden. In dem sich hierdurch zwischen Schraubenpfeifenende und Zylinderboden an sich einstellenden Freiraum sind nicht tragende Trennwandbereiche vorgesehen, die lediglich die Funktion haben, die durch die Schraubenpfeifen geführten Zylinderkopfschrauben von angrenzenden Kühlwasserräumen zu trennen. Durch eine solche Abtrennung der Zylinderkopfschrauben von Kühlwasser können diese Schrauben nicht materialschädigend von dem Kühlwasser angegriffen werden. Andererseits bleibt die kraftübertragende Optimierung des Zylinderkopfes mit gekürzten Schraubenpfeifen vollständig erhalten. <IMAGE>

IPC 1-7 (main, further and additional classification)

F02F 1/38

IPC 8 full level (invention and additional information)

F02F 1/38 (2006.01)

CPC (invention and additional information)

F02F 1/38 (2013.01)

Citation (applicant)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19836441 C1 19991111; EP 0979937 A2 20000216; EP 0979937 A3 20001129; EP 0979937 B1 20031210; US 6109233 A 20000829

INPADOC legal status


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