| 摘要 |
PURPOSE: A cam shaft moves to shaft direction by rpm of engine to change valve lifting amount to improve air-fuel ratio and output power. CONSTITUTION: A cam shaft(50) is supported by a cylinder head(40), and a middle portion of the cam shaft is detached and spline-connected to move in an axial direction. A cam(60) is eccentrically installed in the cam shaft and has a taper shape circumference. A locker arm(65) contacts with the taper surface of the cam to open and close valve. A cam shaft varying portion(80) is installed at an end of the cam shaft to move the cam shaft by the engine rpm change.
|
