| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable valve gear configured to reduce variation in working angle.SOLUTION: A variable valve gear includes: a drive shaft 10 which rotates in synchronization with a crankshaft included in an internal combustion engine; a control sleeve 18 which is rotatably provided around the drive shaft 10 and equipped with an eccentric hole 18a and a first gear 18b on an outer peripheral surface so as to change a position of a central axis 18c of the eccentric hole 18a; a camshaft 12 which is rotatably provided around the drive shaft 10 so as to perform non-uniform rotational motion in accordance with a position of the central axis 18c of the eccentric hole 18a; a control shaft 20 which includes a second gear 20a provided on an outer peripheral surface; and a toothed gear 22 which includes a third gear 22a provided on an outer peripheral surface and engaged with the first gear 18b and a fourth gear 22b provided on an inner peripheral surface, and configured to be mounted on the control shaft 20 when the second gear 20a is engaged with the fourth gear 22b. |
