【Car owner's home car home knowledge】Winter is approaching and the weather becomes colder. Some car owners often close their windows during driving. But have you noticed that when driving in the city, even if the air conditioner is turned on, the car is often filled with a smell of exhaust, and even if you drive in an open place or on a highway, you sometimes feel dizzy and chest tightness.The reason is that riders fail to use the internal and external circulation correctly during driving..
What are the functions of the internal and external circulation of the car? When should I use the inner loop and when should I use the outer loop?
External circulation - replenish fresh air, internal circulation - blocking dirty gas
The external circulation state is to use a fan to suck the air outside the vehicle into the vehicle, which means that the airways outside the vehicle
【Car owner's home car home knowledge】Winter is approaching and the weather becomes colder. Some car owners often close their windows during driving. But have you noticed that when driving in the city, even if the air conditioner is turned on, the car is often filled with a smell of exhaust, and even if you drive in an open place or on a highway, you sometimes feel dizzy and chest tightness.The reason is that riders fail to use the internal and external circulation correctly during driving..
What are the functions of the internal and external circulation of the car? When should I use the inner loop and when should I use the outer loop?
External circulation - replenish fresh air, internal circulation - blocking dirty gas
The external circulation state is to use a fan to suck the air outside the vehicle into the vehicle, which means that the airways outside the vehicle and inside the vehicle are circulated. The wind emitted by the fan comes from the outside of the vehicle. Even if the fan is not turned on, the airflow still sucks into the vehicle while driving to replenish the fresh air in the vehicle. Sometimes I feel that there is still wind when the fan is turned off because the owner sets up an external circulation. When driving in the city, the car will be filled with exhaust odor, which is caused by using external circulation to suck the exhaust gas from the road.
The internal circulation state is to close the airflow channels inside and outside the vehicle. If the fan is not turned on, there will be no airflow circulation. The airflow sucked in when the fan is turned on only comes from the vehicle, forming an airflow circulation inside the vehicle. The internal circulation mainly prevents external dust and harmful gases from entering the car in a timely and effective manner, such as blocking the harmful exhaust gases discharged from the car in front during exercise through smoke, dust, and odor areas or when the vehicle is dense and compact. Another function is insulation.
In traffic jams, most of the internal circulation is used, and most of the external circulation is used for high-speed traffic.
The use of internal and external circulation should be carried out in combination with air conditioning and heating air. Using external circulation, you can breathe fresh air outside the car. When driving at high speed, you will feel that the air in the car is turbid and uncomfortable, and you cannot open the windows. You should use the external circulation to make some fresh air in; when you send warm air in winter, you can turn off the fan and turn on the external circulation, which not only maintains the temperature in the car, but also has fresh air, which will make you feel more comfortable.
But if the air conditioner is turned on to reduce the temperature inside the car, do not turn on the external circulation at this time. You can turn on the external circulation every once in a while and change some fresh air. Some people always complain about the poor cooling effect in summer. In fact, they accidentally set it to an external circulation state. The hot air outside the car continues to flow into the car, and of course the temperature cannot drop. Therefore, if you want to have good cooling effect, you must set it to the internal circulation state; if the temperature is not too hot, turn on a little air conditioner and adjust it, and you can turn it on to the external circulation, so that you will feel more comfortable if you have both air conditioning and breeze.
In addition, because most car owners drive in the city, they are reminded that in traffic jams during rush hour, especially in tunnels, they should try to use internal circulation. When the car starts to drive normally at a constant speed, it should be turned on to the external circulation state. In addition, car owners are reminded that when encountering dusty or more particulate matter in the outside air, while closing the windows, do not forget to close the external circulation and block the external airflow. It is best to set it in an internal circulation state when parking in the parking lot, because in the external circulation state, the dust blown by the wind can easily enter the car, increasing the dust in the car.
Notes:
1. This model often has an automatic switching function for internal and external circulation, which can be automatically switched according to the external air quality conditions. The owners of this type of car will be more troublesome when using the car, but car owners without this function will have to pay attention to this point.
2. In a short time after entering the car, people should open the car windows or open the external circulation ventilation facilities to introduce fresh air. They should not drive for a long time while the windows and doors are closed, and they should not sleep or rest for a long time in the closed car.
3. After purchasing a new car, you should keep the exchange of air inside and outside the car as much as possible like the newly renovated house, so that the harmful gases in the car can be evaporated and released cleanly as soon as possible.
4. When turning on the air conditioner and warm air, use the air AC mode inside and outside the car, and try to avoid using the self-circulation mode in the car for a long time.
5. In areas where traffic jams are encountered, the air conditioner and heating switch should be temporarily adjusted to the self-circulation mode in the car, and vehicles driving open the window should temporarily close the window. The main car develops this habit and adjusts the air conditioner circulation system in the car in a timely manner according to the air conditioning outside the car.
6. The new car must be ventilated within the first 6 months, clean the air conditioner in the car regularly, try to keep the air in the car fresh, and pay special attention not to use perfume or air freshener to cover up the abnormal smell in the car.
