The radiator belongs to the automobile cooling system. The radiator in the engine water cooling system is composed of water inlet chamber, water outlet chamber, main plate and radiator core. Principle: in order to avoid engine overheating, the parts around the combustion chamber (cylinder liner, cylinder head, valves, etc.) must be properly cooled. In order to ensure the cooling effect, the automobile cooling system is generally composed of radiator, thermostat, water pump, cylinder water channel, cylinder head water channel, fan, etc. The radiator is responsible for the cooling of circulating water. Its water pipes and fins are mostly made of aluminum. The aluminum water pipes are made into flat shapes. The fins are corrugated. Pay attention to the heat dissipation performance. The installation direction is perpendicular to the direction of air flow. Try to reduce the wind resistance and improve the cooling efficiency. The coolant flows in the radiator core and the air passes outside the radiator core. The hot coolant is cooled by radiating heat to the air, and the cold air is heated by absorbing the heat from the coolant, so the radiator is a heat exchanger.