The basic function is to drive the coolant to dissipate heat from the engine. In the cylinder block of the car, there is a water channel for circulating water cooling, which is connected to the radiator (commonly known as the water tank) placed at the front of the car through a water pipe, forming a large water circulation system. At the upper outlet of the engine, there is a water pump, which is driven by a fan belt to pump out the hot water in the water channel of the engine cylinder block and pump in the cold water. Est etiam thermostat iuxta pumpam aquae. Quando raeda nunc coepit (raeda frigida), non est activate, it a ut aqua frigida non transibit per tankem aquae, sed solum circulat intra motorem (saepe cognoscit quam parva circulatio). Quando temperatura motoris adpropinquat 80 grados aut supra, aperit, et aqua calida in motore in tankem aquae pumpa est. Aera frigida fluens per tankem aquae, quando raeda ante movet, calore aufert. Hoc est quasi functionem.