| 摘要 |
PROBLEM TO BE SOLVED: To improve accuracy of opening-closing control of an engine valve, while restraining an enlargement and a quantity increase in a holder, by devising a position of a point of application of control force acting on the holder by a control member of a variable valve gear of an internal combustion engine. SOLUTION: In this variable valve gear, a transmission mechanism T transmitting valve driving force of an intake cam 15a to an intake valve 11 and capable of changing a maximum lift quantity of the intake valve 11, has a sub-cam 40 abutting on the intake cam 15a, a rocker arm 50 pressing the intake valve 11 and driving by the sub-cam 40, and the holder 30 swingably supported by a cylinder head 2 with the holder center line Lh as the center. The rocker arm 50 is swingably supported by arm parts 31a and 31b of the holder 30. Distances d2 and d3 between the points of application 37a and 34a of the control force acting on the holder 30 by the control member 70 and the rocking center line Lr of the rocker arm 50, are set smaller than a distance d1 between the holder center line Lh and the rocking center line Lr. COPYRIGHT: (C)2008,JPO&INPIT
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