Patent ID: 6019076
Filing Date: 2000-02-01
Classification: F01L

Abstract:
Valve actuating mechanism comprising:a rotary cam rotatable about a primary axis;a control member pivotable about said primary axis and including a first pivot axis spaced from said primary axis;a primary lever connected with said control member and pivotable about said first pivot axis, said primary lever having a distal end and a cam follower operatively connected intermediate said distal end and the first pivot axis, said cam follower operatively engaging said rotary cam; anda secondary lever having one end pivotable about said primary axis, said one end including an oscillating cam engaging a valve actuating member and having a base circle portion and a valve lift portion, the secondary lever having a distal end operatively connected with the distal end of said primary lever;said control member being movable between a first angular position wherein primarily the valve lift portion of said oscillating cam engages a valve actuating member for fully opening and closing an associated valve and a second angular position wherein primarily the base circle portion of said oscillating cam engages the valve actuating member for providing minimal opening and closing movement of said associated valve;said mechanism including a control lever pivotable about a secondary axis and connected to the control member through a slide and slot connection arranged such that angular motion of the control lever relative to the control member has a relatively higher angular ratio in a low valve lift range than in an intermediate valve lift range.