How Your Car's Cooling System Works

The cooling system in your vehicle protects the engine from overheating, keeps it running efficiently, and warms the car's interior when it is cold out. The following is a brief description of how it works.


There may be slight variations in cooling system designs, but the principle is the same across the board.



Coolant/Anti-freeze
The fluid that runs through the cooling system, sometimes called Coolant and sometimes called Anti-freeze, is the life blood of the system. It transfers heat, resists boiling and freezing, and has additives to help it prevent corrosion from building inside the system.

Radiator
The radiator is the central component to any cooling system. It is here the coolant exchanges heat and is cooled so that the fluid can return to the engine to whisk more heat away.

Radiator Fan
The radiator fan helps the radiator dissipate heat by moving air over it. Some fans operate on a belt-driven clutch, others are electronically controlled. Either way, the fan provides air flow when the vehicle is stopped or not moving fast.

Water Pump
If the coolant is the blood of the cooling system, the water pump is the heart. The water pump keeps the coolant moving through the entire system.

Engine
Coolant travels through channels in the engine to keep the engine running in a certain temperature range. Without a cooling system, an engine would quickly overheat and destroy itself.

Thermostat
The thermostat helps regulate the engine temperature by opening and closing. When closed, coolant cannot get back to the radiator to let its heat off, so the engine warms up. With the thermostat open, coolant is able to move from the engine to the radiator where it is cooled.

Heater Core
The heater core is like a small radiator in the dashboard of your car. When you turn the heat on in your car, coolant running through the radiator gives off heat which is then directed through the ducts and blown into the cabin.






10 comments:

driving school Hereford February 16, 2013 at 10:18 AM  

Most commonly you will hear a screeching noise and will be able to see coolant leaking from the front of the pump or under the car. Early signs are small spots of coolant under the car after being parked overnight and a strong coolant odor while driving.

jorg gray June 22, 2014 at 12:21 PM  

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JM Automotive January 23, 2017 at 1:08 AM  

You're right! ​Cooling system ​of your vehicle protects the engine from overheating.
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Jose Huber March 29, 2017 at 8:28 AM  

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Cathy April 11, 2017 at 4:01 AM  

Want brand of coolant ( antifreeze) should I put in my radiator. For my 1994 Isuzu pickup truck it has 2.3L engine in it. The Brandy and color please. I can't seem to find the answer anywhere. Thank you

rachael roberts May 9, 2017 at 9:09 AM  

Good Post. We are Global leader in the manufacture and distribution of aftermarket cooling products for automotive engine cooling system. Getting touch with us on reachcooling.com

JM Automotive July 17, 2017 at 7:07 AM  

Great post!!
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rachael roberts September 5, 2017 at 2:44 AM  

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james gardez September 6, 2017 at 3:05 AM  

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