EP 0890020 B1 20000105 - PROCESS FOR PRODUCING CYLINDER HEADS FOR INTERNAL COMBUSTION ENGINES
Title (en)
PROCESS FOR PRODUCING CYLINDER HEADS FOR INTERNAL COMBUSTION ENGINES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ZYLINDERKÖPFEN FÜR VERBRENNUNGSMOTOREN
Title (fr)
PROCEDE DE FABRICATION DE CULASSES POUR MOTEURS A COMBUSTION INTERNE
Publication
Application
Priority
- DE 19612500 A 19960329
- EP 9701540 W 19970326
Abstract (en)
[origin: US6112803A] PCT No. PCT/EP97/01540 Sec. 371 Date Sep. 28, 1998 Sec. 102(e) Date Sep. 28, 1998 PCT Filed Mar. 26, 1997 PCT Pub. No. WO97/37107 PCT Pub. Date Oct. 9, 1997The cylinder head for internal combustion engines is produced by pouring liquid cylinder head material, especially aluminum, into a cylinder head mold containing a mold core having stepped sections in the region of the valve seat ring and the valve guide. The valve seat rings and valve guides are produced from a conventional material based on steel or copper by pressing and sintering in such a way that they have an open pore volume of 5 to 15%, a valve seat and/or a valve guide are laid on the stepped sections of the mold core, whereafter liquid aluminum is poured into the preheated mold and the mold core is removed in the conventional way after the molten aluminum has solidified.
IPC 1-7
IPC 8 full level
B22D 17/00 (2006.01); B22D 19/00 (2006.01); B22D 19/04 (2006.01); B22D 19/08 (2006.01); F01L 3/08 (2006.01); F01L 3/22 (2006.01); F02F 1/24 (2006.01)
CPC (source: EP KR US)
B22D 19/0009 (2013.01 - EP US); F01L 3/08 (2013.01 - EP KR US); F01L 3/22 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6112803 A 20000905; AT E188537 T1 20000115; DE 19612500 A1 19971002; DE 59700975 D1 20000210; EP 0890020 A1 19990113; EP 0890020 B1 20000105; ES 2144312 T3 20000601; JP 2000507504 A 20000620; KR 20000005112 A 20000125; PT 890020 E 20000630; WO 9737107 A1 19971009
DOCDB simple family (application)
US 15538298 A 19980928; AT 97916394 T 19970326; DE 19612500 A 19960329; DE 59700975 T 19970326; EP 9701540 W 19970326; EP 97916394 A 19970326; ES 97916394 T 19970326; JP 53491197 A 19970326; KR 19980707753 A 19980929; PT 97916394 T 19970326