EP 1266130 A1 20021218 - VALVE CONTROL MECHANISM
Title (en)
VALVE CONTROL MECHANISM
Title (de)
VENTILSTEUERUNG
Title (fr)
MECANISME DE COMMANDE DE SOUPAPE
Publication
Application
Priority
- GB 0101249 W 20010321
- GB 0006875 A 20000321
Abstract (en)
[origin: WO0171167A1] An internal combustion engine is disclosed. The engine includes a camshaft carrying a plurality of cams, the camshaft being mounted in a cylinder head or cam carrier; and a valve control mechanism comprising: (a) first means for effecting a limited degree of axial movement of the camshaft; and (b) second means for varying the rotational phase of said camshaft, characterised in that said first and second means comprise a pair of concentric pistons housed within a cylinder and under independent hydraulic control, whereby the concentric pistons can be moved independently of one another. This arrangement enables the valve lift, duration and timing to be varied when the camshaft carries 3-D profiled cam lobes (i.e. valve lift varies tangentially with cam angle in end view and varies along the camshaft linearly at each cam angle in side view).
IPC 1-7
IPC 8 full level
F01L 1/34 (2006.01); F01L 1/344 (2006.01); F01L 13/00 (2006.01)
CPC (source: EP US)
F01L 1/344 (2013.01 - EP US); F01L 13/0042 (2013.01 - EP US)
Citation (search report)
See references of WO 0171167A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0171167 A1 20010927; AU 4093201 A 20011003; EP 1266130 A1 20021218; GB 0006875 D0 20000510; JP 2003528247 A 20030924; US 2003051687 A1 20030320
DOCDB simple family (application)
GB 0101249 W 20010321; AU 4093201 A 20010321; EP 01912014 A 20010321; GB 0006875 A 20000321; JP 2001569128 A 20010321; US 23916402 A 20020919