Which is the external circulation in car AM?
1 Answers
In car circulation, 'A' stands for automatic control of the car's internal and external circulation, while 'M' represents the external circulation. When the 'A' button is pressed, the air conditioning system will automatically determine whether internal or external circulation is needed based on the air quality outside the car. When the 'M' button is pressed, the car is in internal circulation when the light is on, and in external circulation when the light is off. Below are the functions of internal and external circulation in cars: 1. Function of external circulation: External circulation mainly serves the purpose of ventilation. When the air inside the car is relatively polluted, the car needs to turn on the external circulation to replace the air inside. 2. Function of internal circulation: When the car turns on internal circulation, the air inside the car does not flow, and the air current circulates in a closed environment.