EP 1000226 A1 20000517 - VALVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WHICH CAN BE SWITCCHED INTO DRIVE OR BRAKE MODE
Title (en)
VALVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WHICH CAN BE SWITCCHED INTO DRIVE OR BRAKE MODE
Title (de)
VENTILSTEUERUNG EINER ALS ANTRIEB ODER BREMSE SCHALTBAREN BRENNKRAFTMASCHINE
Title (fr)
SYSTEME DE COMMANDE DE SOUPAPES D'UN MOTEUR A COMBUSTION POUVANT ETRE COMMUTE EN MODE ENTRAINEMENT OU EN MODE FREINAGE
Publication
Application
Priority
- DE 9801925 W 19980706
- DE 19733322 A 19970801
Abstract (en)
[origin: DE19733322A1] The invention relates to a valve control system for an internal combustion engine which can be switched into a drive or brake mode, comprising both a brake-camshaft and a main camshaft acting upon the exhaust valves. The aim of the invention is to adapt engine braking power to various requirements. To achieve this the two camshafts are arranged in such a way as to enable phase displacement in relation to each other using a phase adjustment mechanism. When only a low braking power is required, decompression occurs clearly before or only after top dead centre so that part of the compression work does not need to be conducted in the first case and is recovered by means of expansion in the second case.
IPC 1-7
IPC 8 full level
F01L 13/00 (2006.01); F01L 13/06 (2006.01); F02D 13/04 (2006.01)
CPC (source: EP)
F01L 13/0047 (2013.01); F01L 13/06 (2013.01)
Citation (search report)
See references of WO 9906678A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
DE 19733322 A1 19990204; BR 9811812 A 20000815; EP 1000226 A1 20000517; JP 2001512206 A 20010821; WO 9906678 A1 19990211
DOCDB simple family (application)
DE 19733322 A 19970801; BR 9811812 A 19980706; DE 9801925 W 19980706; EP 98943670 A 19980706; JP 2000505408 A 19980706