| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a valve mechanism of an internal combustion engine, which can improve the degree of freedom the movement performance of a valve for opening and closing a plurality of cylinders installed in the same cylinder than before. <P>SOLUTION: The valve mechanism 11A comprises a motor 12, a camshaft 20 driven by the motor 12, a first cam 21 installed in the camshaft 20 to drive the opening and closing of a first suction valve 2A, and a second cam 22 installed in the camshaft 20 to drive the opening and closing of a second suction valve 2B disposed in the same cylinder 1 as the first suction valve 2A. When the camshaft 20 is rotated in the forward direction (F), the profile of the first cam 21 and the profile of the cam of the second cam 22 are formed respectively so that the valve closing performance of the first suction valve 2A and the valve opening performance of the second suction valve 2A differ with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
