| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of shafts to simplify structure, and to make an engine head compact. SOLUTION: The variable valve system comprises: a control cam 11 disposed to a control shaft 10 provided near a first roller 8 of a rocker arm 1; an interposing arm 21 disposed to be capable of swinging; a lever 32 disposed to the interposing arm 21 and having a second roller 30 and a third roller 31; a rotating cam 42 disposed to be rotatable and lifting valves 6, by pressing the third roller 31 in one direction of small angle rotation directions of the lever 32 to press the rocker arm 1 through the lever 32 and interposing arm 21 in this order; and a lift control apparatus changing a lift amount by the rotating cam 42 and the angle of action of the valves 6, by changing an orientation angle of the control cam 11. COPYRIGHT: (C)2004,JPO
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