Engine having coolant control valve

An engine having a coolant control valve, comprising:

• a sealing ring that has a pipe shape, wherein a sealing ring inlet is formed at an end portion of the sealing ring and sealing ring outlets are formed at a predetermined position from an inner surface to an outer surface of the sealing ring;
• a valve housing that a mounting space is formed therein to rotatably house the sealing ring therein, wherein the valve housing has an interior circumference corresponding to an exterior circumference of the sealing ring, and discharge outlets are formed corresponding to the sealing ring outlets;
• a drive portion that is coupled to the sealing ring to selectively rotate the sealing ring such that the sealing ring outlets match the discharge outlets and a coolant that flows in the sealing ring is supplied to the discharge outlets;
• and
• a blocking wall that is disposed to the one end portion of the sealing ring to block a part of the one end portion of the sealing ring to form the sealing ring inlet, wherein the blocking wall is selectively rotated about a central axis thereof in accordance with a rotation of the sealing ring,
• wherein the blocking wall selectively blocks a first coolant line of a cylinder head or a second coolant line of a cylinder block depending on a rotation position of the sealing ring.