| 摘要 |
PROBLEM TO BE SOLVED: To materialize cylinder deactivation while suppressing the enlargement of a device.SOLUTION: A dynamic valve mechanism includes: an output shaft 200 provided with a cam lobe for driving a valve, and rotatably journaled while its axial position is regulated; an input shaft 300 rotated by receiving the rotational power of a crank shaft, and provided so as to slide in the axial direction to the output shaft; and a switching mechanism 400 which has an engaging portion 410 provided on the input shaft and an engaged portion 420 provided on the output shaft, integrally rotates the input shaft and the output shaft in an engaging state in which the engaging portion is engaged with the engaged portion as (b), and relatively rotates the input shaft and the output shaft in a disengaging state in which the engaging portion is disengaged from the engaged portion. The switching mechanism switches the engaging state and the disengaging state, according to the axial position of the input shaft.SELECTED DRAWING: Figure 4 |
