Global Patent Index - EP 1062410 A1

EP 1062410 A1 2000-12-27 - 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

EP 1062410 A1 (EN)

Application

EP 99918255 A

Priority

  • IN 9900008 W
  • IN 142BO1998 A

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 (main, further and additional classification)

F01L 13/00

IPC 8 full level (invention and additional information)

F01L 1/12 (2006.01); F01L 13/00 (2006.01)

CPC (invention and additional information)

F01L 13/0005 (2013.01)

Citation (search report)

See references of WO 9947794A1

Designated contracting state (EPC)

DE FR GB IT SE

EPO simple patent family

WO 9947794 A1 19990923; AU 3626299 A 19991011; EP 1062410 A1 20001227; JP 2002506948 A 20020305

INPADOC legal status


2003-05-02 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021001

2001-06-13 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010425

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001006

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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