Patent ID: 8281771

Claim:
An exhaust gas recirculation EGR valve in a vehicle comprising: a driving unit having a driving motor for rotating a motor shaft; an interlocking unit for receiving rotation force from the motor shaft; a rod portion arranged perpendicular to the interlocking unit for moving upon reception of the rotation force from the interlocking unit; a valve unit provided to an end portion of the rod portion for controlling a flow rate of the exhaust gas; and a valve housing coupled to the driving unit as one unit, having an EGR port and a bypass port, wherein: the interlocking unit includes a valve return member for rotating the motor shaft forcibly to make the valve unit to move to an initial position; the valve return member is a torsion spring which generates torsion in a rotation direction of a regular or reverse direction rotation of the motor shaft the torsion spring including a body portion having a coil wound plurality of times, and first and second extensions from a starting point and an end point of the coil wound thus, respectively; the interlocking unit further includes a cap member which covers an outside, and the valve return member is mounted in the cap member; the cap member includes a projection from an inside surface thereof; and the projection includes: a guide projection for supporting the first and second extensions of the torsion spring; and a stopper is arranged spaced from the guide projection to prevent the interlocking gear from rotating excessively.