What Is the Function of a Car Radiator?

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The function of a car radiator is to cool the engine through the use of cooling fins and the movement of the air through the vehicle itself. Find out how a car radiator uses tubes and hoses to distribute cool air through a car engine with information from a certified master mechanic in this free video on auto maintenance.

Part of the Video Series: Auto Repair & Maintenance
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Video Transcript

Hi, my name is Mark Blocker. In this segment, we're going to cover, what is the function of an automotive radiator? The function of an automotive radiator, is to cool the engine, and how it does this, the radiator is mounted in the front of the vehicle, then it holds or cools the liquid from the engine, that cools the engine, and it's got a upper hose, and a lower hose. The upper hose is used for an inlet. The water trickles down through small tubes, that are connected with fins. As the air from driving the vehicle passes through the radiator, that cools the liquid coming from the engine, and then that's drawn in through the bottom radiator hose, in through the engine, and that's how the engine is cooled, so the purpose of the automotive radiator, is to cool the engine, and it does so by using cooling fins. The movement of the air through the vehicle itself, or with the additional use of electric fans, are mounted behind the radiator, are used for pulling air through the radiator, when you're sitting at a stop, or the engine might be under heavy load conditions, like you're using the air conditioner, or something of that nature, so that's the purpose of an automotive radiator.

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