In addition to the lubrication system to reduce the friction between the parts, the motor must also have a cooling system to timely dissipate part of the heat of the heated parts to ensure that the motor works at the appropriate temperature. motor cooling has two modes: water cooling and air cooling. Nowadays, general vehicle motors are water-cooled. The motor water-cooled cooling system mainly consists of a water pump, a radiator, a cooling fan, a compensation water tank, a thermostat, an motor body, and a cylinder head water jacket.

How is it cooled? Eaton Char-lynn Motor analysis: The coolant is surrounded by the water pump to accelerate the flow of the coolant in the water jacket of the cylinder. The natural coolant and the electric fan are used to cool the coolant in the radiator, and the cooled coolant is reintroduced. In the water jacket, the motor is cooled down.

In fact, in addition to cooling the motor, the cooling system also has the function of “insulation”, because “supercooling” or “overheating” will affect the normal operation of the motor. This process is mainly through the thermostat to achieve the "cooling" of the motor cooling system. What is the size loop of the cooling system? It can be simply understood that the small circulating coolant does not pass through the radiator, while the large circulating coolant is passed through the radiator.

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