Q:有时候觉得车内空气不好开风扇也不怎么管用,这是怎么回事呢?A:首先应该明白汽车内的风扇开启有外循环和内循环两种使用状态,是通过转换开关来实现的。外循环状态是利用风机将车外的空气抽吸到车内,也就是说车外与车内的气道是流通的,风扇打出的风来自车外,即使不开风机,车辆行驶中仍然有气流吸入到车内, Q: Sometimes I think the car air is not good, the fan does not work well, how is this going? A: First of all, you should understand that the fan inside the car has two kinds of usage states: the outer loop and the inner loop. Achieve. Outside the loop state is to use the fan to draw the air outside the car into the car, that is, outside the car and the airway is the circulation, the fan blows from the car outside the wind, the vehicle is still driving Air flow into the car,