Engine system having coolant control valve

An engine system comprising:

• a cylinder block;
• a cylinder head;
• and
• a coolant control valve engaged with the cylinder head to receive a coolant exhausted from the cylinder block and a coolant exhausted from the cylinder head, the coolant control valve controlling the coolant to be supplied to a heater, a radiator, and an oil cooler and controlling the coolant exhausted from the cylinder block,
• wherein the coolant control valve includes a valve housing,
• wherein the coolant control valve continuously receives therein the coolant from the cylinder head, continuously supplies the coolant to the oil cooler through the valve housing, selectively supplies the coolant to the heater and the radiator, and selectively receives the coolant exhausted from the cylinder block.