EP 0777039 B1 19990616 - Valve drive apparatus for an internal combustion engine having a convex shim between a cam and a valve
Title (en)
Valve drive apparatus for an internal combustion engine having a convex shim between a cam and a valve
Title (de)
Ventiltriebvorrichtung für eine Brennkraftmaschine mit einem konvexen Abstandsstück zwischen einer Nocke und einem Ventil
Title (fr)
Dispositif d'entraînement de soupape pour un moteur à combustion interne ayant une cale de forme convexe entre une came et une soupape
Publication
Application
Priority
- JP 31116495 A 19951129
- JP 29674696 A 19961108
Abstract (en)
[origin: EP0777039A1] A valve drive apparatus having a shim (24) which is prevented from interfering with a cylinder head (28) without decreasing abrasion resistance between the shim and a lifter (23) contacting the shim (24). A three-dimensional cam (21) includes a cam portion (25) having a slanting cam surface (27) inclined with respect to a rotational axis of the cam. The cam (21) is movable in either direction along the rotational axis. The lifter (23) transmits a force generated by a camming action of the cam to a valve (22). The lifter has a first surface contacting the valve and a second surface (32) substantially opposite to the first surface. A shim (24) is interposed between the cam (21) and the lifter (23). The shim (24) has a first surface (33) contacting the cam and a second surface (34) opposite to the first surface (33). The second surface (34) of the shim (24) has a convex spherical shape, and the second surface (32) of the lifter (23) has a concave spherical shape so as to receive the second surface (34) of the shim (24). <IMAGE>
IPC 1-7
IPC 8 full level
F01L 1/12 (2006.01); F01L 1/14 (2006.01); F01L 1/18 (2006.01); F01L 1/20 (2006.01); F01L 13/00 (2006.01)
CPC (source: EP)
F01L 1/143 (2013.01); F01L 1/185 (2013.01); F01L 13/0042 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0777039 A1 19970604; EP 0777039 B1 19990616; DE 69602913 D1 19990722; DE 69602913 T2 20000323; JP H09209727 A 19970812
DOCDB simple family (application)
EP 96119089 A 19961128; DE 69602913 T 19961128; JP 29674696 A 19961108