| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable valve gear of an internal combustion engine in which a valve lift amount and valve opening/closing timing can be adjusted with high precision. SOLUTION: This variable valve gear comprises a camshaft 10 rotatably installed in the internal combustion engine, a cam 15 formed on the camshaft, a swing cam 45 swingably installed in the internal combustion engine and driven by the cam, an intake valve 5 or an exhaust valve 6 driven by the swing cam, a control shaft 11 rotatably installed in the internal combustion engine parallel with the camshaft, a control arm 72 having one end held by the control shaft and the other end projected from the control shaft, an actuator 43 displacing the control arm by rotating the control shaft, a transmission arm 35 rotatably connected to the other end of the control arm around a rotating axis in the generally same direction as the axial direction of the control shaft to transmit the displacement of the control arm to the swing arm, and an adjusting means 80 adjusting a distance between the axis of the control shaft and the rotating axis of the transmission arm. COPYRIGHT: (C)2007,JPO&INPIT |
