Global Patent Index - EP 1000226 A1

EP 1000226 A1 2000-05-17 - 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

EP 1000226 A1 (DE)

Application

EP 98943670 A

Priority

  • DE 9801925 W
  • DE 19733322 A

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 (main, further and additional classification)

F01L 13/06; F01L 13/00

IPC 8 full level (invention and additional information)

F01L 13/00 (2006.01); F01L 13/06 (2006.01); F02D 13/04 (2006.01)

CPC (invention and additional information)

F01L 13/06 (2013.01); F01L 13/0047 (2013.01)

Citation (search report)

See references of WO 9906678A1

Designated contracting state (EPC)

DE FR GB IT SE

EPO simple patent family

DE 19733322 A1 19990204; BR 9811812 A 20000815; EP 1000226 A1 20000517; JP 2001512206 A 20010821; WO 9906678 A1 19990211

INPADOC legal status


2002-08-14 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020201

2001-11-07 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010926

2000-05-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991222

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT SE