Valve device for internal combustion engine

A valve device for an internal combustion engine, the internal combustion engine including a plurality of cylinders, the valve device comprising:

• a camshaft;
• a cam provided in the camshaft;
• a control shaft provided as a shaft different from the camshaft, the control shaft being placed in parallel with the camshaft;
• an input arm to which a cam torque of the cam is transmitted;
• a first rocker arm;
• a second rocker arm;
• a first valve configured to be opened and closed along with pivoting of the first rocker arm;
• a second valve placed in the same cylinder as the first valve is placed, the second valve configured to be opened and closed along with pivoting of the second rocker arm;
• and
• a slider configured to allow the input arm to be supported by the control shaft, the slider configured to support the first rocker arm in a power transmittable manner such that the cam torque transmitted to the input arm is transmitted to the first rocker arm, wherein:
• the first rocker arm and the second rocker arm are connected by a torsion portion such that the cam torque transmitted to the first rocker arm is transmitted to the second rocker arm via the torsion portion;
• the first rocker arm, the second rocker arm, and the torsion portion are provided as an integrated member;
• an arm assembly constituted by the first rocker arm, the second rocker arm, and the input arm are provided for each of the plurality of cylinders;
• and
• a minimum inside diameter of a hole of the second rocker arm through which the control shaft is passed is larger than a maximum outside diameter of an outer periphery of the slider.