By: Prayag nao A car’s engine produces lot of heat during running condition, in order to avoid engine damage it must be cooled. It’s done by circulating coolant liquid usually air or water mixture with anti-freezing liquid through fins or specially designed tubes . A water-cooled cooling system A water-cooled engine block and cylinder head have interconnected coolant channels running through them. At the top of the cylinder head all the channels converge to a single outlet. A pump, driven by a pulley and belt from the crankshaft, drives hot coolant out of the engine to the radiator, which is a form of heat exchanger. Unwanted heat is passed from the radiator into the air stream, and the cooled liquid then returns to an inlet at the bottom of the block and flows back into the channels again. Usually the pump sends coolant up through the engine and down through the radiator, taking advantage of the fact that hot water expands, becomes...
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