Valve device

A valve device comprising:

• a body that defines a fluid flow path communicating with a combustion chamber of an internal-combustion engine;
• a valve that is accommodated rotatably in the fluid flow path to vary an opening degree of the fluid flow path and that has:
• a fully-open position that is a valve position at which a flow path area of the fluid flow path is maximized;
• a fully-closed position that is a valve position at which the flow path area of the fluid flow path is minimized;
• and
• an intermediate position that is a predetermined valve position between the fully-open position and the fully-closed position;
• an electrically-operated actuator that rotates the valve toward its closing side or opening side;
• a valve urging part that urges the valve from the fully-closed position toward the opening side;
• and
• an ACT control part that controls the electrically-operated actuator to drive, wherein:
• a set load of the valve urging part is smaller than a set load that is capable of returning the valve from the fully-closed position to the intermediate position only by urging force of the valve urging part;
• and
• when a position of the valve at time of turning off an IG switch for stopping operation of the internal-combustion engine is on the closing side of the intermediate position, the ACT control part shifts the valve to the intermediate position by the electrically-operated actuator after the IG switch is turned off.