EP 1062410 A1 20001227 - SELECTIVE DISABLING OF CAM OPERATED DEVICES
Title (en)
SELECTIVE DISABLING OF CAM OPERATED DEVICES
Title (de)
VORRICHTUNG ZUR ABSCHALTUNG DER NOCKENWIRKUNG FÜR NOCKENGESTEUERTE MASCHINEN
Title (fr)
SYSTEME POUR DESACTIVER LES CAMES D'UN DISPOSITIF
Publication
Application
Priority
- IN 9900008 W 19990315
- IN 142BO1998 A 19980316
Abstract (en)
[origin: WO9947794A1] Each cylinder valve (14, 15) of an internal combustion engine is intermittently and cyclically operated in active mode by a cam (3a, 3b), acting through a cam follower (4a, 4b). Cyclic operations of the valve (14, 15) are suspended throughout passive mode of the cylinder. The cam (3a, 3b) operating the valve (14, 15) has uniform radial profile excepting for a lobe and a trough. In active mode, the lobe of cam lifts the cam follower (4a, 4b) to open the valve (14, 15) while trough of cam (3a, 3b) passes under the cam follower (4a, 4b) without affecting the closed valve. Changes in operating mode of a valve (14, 15) involve reconfiguring mode changing components comprising the cam follower (4a, 4b), necessitating entry of cam follower (4a, 4b) in the trough of cam profile during an intermediate phase, to maintain the timing. Although all valves of a cylinder change to same mode by common initiation and motive power, troughs of operating cams time mode changes of individual valves.
IPC 1-7
IPC 8 full level
F01L 1/12 (2006.01); F01L 13/00 (2006.01)
CPC (source: EP KR)
F01L 13/00 (2013.01 - KR); F01L 13/0005 (2013.01 - EP)
Citation (search report)
See references of WO 9947794A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9947794 A1 19990923; AU 3626299 A 19991011; EP 1062410 A1 20001227; JP 2002506948 A 20020305; KR 20010041904 A 20010525
DOCDB simple family (application)
IN 9900008 W 19990315; AU 3626299 A 19990315; EP 99918255 A 19990315; JP 2000536959 A 19990315; KR 20007010208 A 20000915