A car cooling system is a self-contained system that uses radiator fluid and/or water under pressure to cool a car's engine. A water pump, which is a belt-driven rotary-style pump, is the driving force behind a car's cooling system. Located toward the front of an engine, a water pump pressurizes and propels coolant fluid from a car's radiator and sends it directly into a car's engine where it circulates and picks up heat from an engine's walls. Engine coolant would quickly become saturated with engine heat and start to boil if not for the pressurized movement that a water pump supplies. Fast moving, pressurized engine coolant has a much higher heat threshold than slow-moving, stagnant fluid.
After engine coolant circulates and picks up heat from an engine's walls and inner core, it flows to a car's radiator, where the heat from an engine gets filtered, or radiated, out of the circulating coolant and dissipated into the outside air. As heated coolant circulates through a radiator, a small fan, a radiator fan, spins and blows fan directly through the fan-like structure of a radiator, further cooling engine coolant. A radiator, which is a rectangular metal fan-like part located between the front of an engine and a car's grille, stores engine coolant when a car is not operating and strips super-heated engine coolant of excess heat and prepares it for reentry into a running engine.
A car's coolant system uses a series of small rubberized hoses to link the radiator and water pump to a car's engine. These rubber hoses are highly resistant to heat and are able to withstand high temperatures on a continual basis. An upper radiator hose allows stored engine coolant to flow out of a car's radiator and into a car's engine. A lower radiator hose allows returning engine coolant that has circulated through a hot engine to return to a car's radiator. A water pump uses small rubberized hoses to pump coolant fluid into a car's radiator and to receive incoming coolant fluid from a car's engine. Coolant system hoses link the major parts of a car's coolant system and keep circulating engine coolant from leaking.
