How to operate the internal and external circulation of the car?

Internal and external circulation is exactly what the name suggests. Internal circulation is to let the air only circulate in the car, and the air in the car is driven by the blower to circulate. The external circulation is to connect the inside of the car and the outside world, during the driving of the vehicle, the air flow will use the wind pressure to automatically inhale into the car, and when the air outside the car is stationary, it can also enter the blower along the airway, thus blowing into the car.

1.When to use the outer circulation.

The new car you have just purchased must be opened as much as possible to keep the air circulation inside and outside the car, so that the harmful gases in the car can be volatilized and released as soon as possible.

In addition, when running at high speed for a long time, if the internal circulation is maintained, it is easy to cause insufficient oxygen in the car, which will lead to fatigue driving and cause traffic accidents.

Of course, when smoking, you must also open the external circulation, so as to ensure that the smoke can be quickly discharged to the outside of the car. This is not only responsible for your own health, but also allows the family members in the car to be less exposed to secondhand smoke. However, it is better not to smoke in the car, after all, the space is too small for second-hand smoke to be released in time.

2.When to use the inner circulation.

In the process of daily driving, we are basically in a state of internal circulation, but we still need to pay special attention to these situations.

When the traffic is congested, we must open the internal circulation, because the more congested the air, the greater the density of exhaust gases, at this time, the internal circulation can effectively prevent the exhaust gas outside the car from entering the car and avoid causing harm to us. When encountering sand and dust on the road, you must also open the internal circulation, which can not only prevent the dust outside the car from entering, but also reduce the impact of wind and sand on the air conditioning filter.

How to use the internal circulation and external circulation of <> car reasonably?

1. Use internal circulation when turning on the air conditioner. The car air conditioner blows out the air conditioning to cool down the temperature in the car, so that people feel cool, and the car should use internal circulation when the air conditioner is turned on, so that the air in the car does not circulate with the outside world, which can ensure the refrigeration effect in the car.

2. Use internal circulation when the outside air is bad. When people are driving on dusty roads, it is recommended to turn on the internal circulation to prevent dirty air from the outside from entering the car and affecting people's breathing.

3. Use external circulation when the air conditioner is not turned on. If the temperature is not too high and people do not need to turn on the air conditioner to cool down, then it is recommended to turn on the external circulation, so that the air in the car can be exchanged with the outside world in time to ensure that the air in the car is fresh.

4. Alternate use of internal and external circulation. When driving, whether the inner circulation is always on or the outer circulation is always on, it may affect the air quality in the cabin, and people should use the internal and external circulation alternately.

How to use:1Internal circulation is used in traffic jams;

2.When encountering dusty road sections, don't forget to close the external circulation to block the external airflow while closing the windows;

3.When parking at ordinary times, it is best to set up an inner circulation;

4.If you drive at high speed, the air in the car is turbid for a long time, people are uncomfortable, and you can't open the window, so you should use the external circulation to get some fresh air in;

5.The use of internal and external circulation should be combined with air conditioning and heating;

6.During rush hour, especially in tunnels, internal circulation should be used as much as possible. When the car starts to drive at a normal and constant speed, it should be turned on to the external circulation state.

7.When the temperature inside the car is higher than the temperature outside the car, the front windshield will fog up, and at this time, the external circulation must be turned on to achieve the defogging effect.

The automobile air conditioning system mainly uses fluorine as the medium, and the purpose of refrigeration is achieved through the change of system pressure. It consists of an evaporation tank, an expansion valve, a compressor, a blower, a condenser, a drying tank, and a pipeline. When the air conditioning system is working normally, the evaporation box works in a cold environment, and water will be generated when it encounters the relative hot air outside, which is also the reason for the design of the water pipe in the evaporation box structure; The humid environment of the evaporation box and the ventilation duct and the dust on the surface provide a breeding ground for mold and fungus, and mold and fungus will quickly multiply into mold and fungal clusters, producing rotten odors of organisms, which will be mixed with the air conditioning with the opening of the air conditioner, polluting the entire interior of the cabin, often making the driver feel uncomfortable, and in serious cases, it will also make people feel uncomfortable, chest tightness and other discomforts, commonly known as air conditioning disease.

Principle: External circulation: replenish fresh air.

Internal circulation: block dirty gases.

Experts explained that the fan in the car is turned on, and there are two states of use, external circulation and internal circulation, which are achieved through transfer switches.

The external circulation state is to use the fan to suck the air outside the car into the car, that is to say, the air channel outside the car and the inside of the car are circulating, and the air from the fan comes from outside the car. Sometimes I feel that there is still wind when the fan is turned off, because the owner has set up the external circulation. When driving in the city and encountering congestion, the car will be filled with tail odors, which is caused by the use of external circulation.

The internal circulation state is to close the airflow channel inside and outside the car, there is no airflow circulation without turning on the fan, and the airflow inhaled when the fan is turned on only comes from the inside of the car, forming the airflow circulation inside the vehicle. The internal circulation is mainly to prevent external dust and harmful gases from entering the car in a timely and effective manner, such as blocking the harmful exhaust gas discharged by the vehicle in front of it through smoke, dust, odor areas or when the vehicle is driving densely and compactly. Another function is heat preservation.

I didn't understand the internal and external circulation of the car, don't say that you are an old driver, learn to use it to stay away from the smell.

How to use: internal circulation for traffic jams, high speed for external circulation.

The use of internal and external circulation should be combined with air conditioning and heating; Using the external circulation, you can breathe the fresh air outside the car, driving at high speed, after a long time, you feel that the air in the car is turbid, people are uncomfortable, and you can't open the window, you should use the external circulation to get some fresh air in; In winter, if the heater feels too hot, 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 feel more comfortable.

I didn't understand the internal and external circulation of the car, don't say that you are an old driver, learn to use it to stay away from the smell.

When you turn on the warm air in winter, do you open the inner circulation or the outer circulation? The old driver teaches you to use the heater correctly.

External circulation - to supplement fresh air, internal circulation - to block dirty gases. The internal and external circulation state is to use the fan to suck the air outside the car into the car, that is to say, the air channel outside the car and inside the car is circulating, and the air from the fan comes from outside the car.

The internal circulation of the car air conditioner is to keep the temperature in the car constant and the flow of gases, but there are also disadvantages, that is, the air quality will decrease over time. The external circulation is the exchange with the outside gas to keep the air in the car up to a fresh standard.

How to use the internal circulation and external circulation of the car? If the timing is not right, it can be fatal, so novices should be careful.

The working principle of external circulation is to use a fan to get the outside air into the car, and blow the air in the car to the outside of the car through the fan, so as to achieve the effect of ventilation without opening the window. The reason for internal circulation is very simple, which is to circulate the air in the car, especially when the heating is turned on in winter and the air conditioner is turned on in summer. In summer, the air conditioner works with a compressor, so you need to turn on the AC air conditioner button, and then turn on the air conditioner, so the fuel consumption is relatively large when the air conditioner is turned on in summer.

When the temperature inside the car is higher than the outside temperature when the air conditioner is turned on, the front windshield will fog up at this time, and the external circulation must be turned on at this time to achieve the defogging effect. In winter, the warm air of the car works by the heat generated by the engine when it is running, and the heat dissipation of the engine is based on the water tank.

In winter, you don't need to turn on the A C button to warm up, the correct way is to let the car warm up for a period of time after the vehicle starts, and then turn on the heater when the temperature of the water rises, first adjust to the external circulation, so that the cold air in the car is discharged, and then adjust to the internal circulation to warm up the car. It doesn't cost any gas. When the air quality outside the car is poor, it is windy or when the sand and dust is large, after opening the external circulation, the dirty air and sand and dust outside will enter the car, and the air in the car will be very poor, so you must pay attention.

Using the external circulation, you can breathe the fresh air outside the car, driving at high speed, after a long time, you feel that the air in the car is turbid, people are uncomfortable, and you can't open the window, you should use the external circulation to get some fresh air in; In winter, if the heater feels too hot, 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 feel more comfortable.

However, if the air conditioner is turned on to reduce the temperature in the car, do not turn on the external circulation at this time, but turn on the external circulation every once in a while to replace some fresh air. Some people use air conditioners in summer to complain that the cooling effect is not good, but in fact, they are accidentally set to the external circulation state, and the hot air outside the car continues to flow into the car, and the temperature cannot be lowered. Therefore, if you want a good cooling effect, you must set it to the internal circulation state; If the temperature is not too hot, you can turn on the air conditioner to adjust it, and you can turn it on to the external circulation, so that there is both air conditioning and fresh breeze, and people are more comfortable.

In addition, if you are driving in the city, you should try to use the inner loop during the traffic jam during the rush hour, especially in the tunnel. When the car starts to drive at a normal and constant speed, it should be turned on to the external circulation state. In addition, when encountering dusty road sections, do not forget to close the external circulation to block the external airflow while closing the windows.

It is best to set it to the inner circulation state when parking, because in the external circulation state, the dust blown by the wind can easily enter the car, which will increase the dust in the car.

How to use the internal circulation and external circulation of the car? If the timing is not right, it can be fatal, so novices should be careful.

External circulation - to supplement fresh air, internal circulation - to block dirty gases. The internal and external circulation state is to use the fan to suck the air outside the car into the car, that is to say, the air channel outside the car and inside the car is circulating, and the air from the fan comes from outside the car.

Usually use the internal circulation, I feel that the air is not good, and the external circulation time does not need to be too long.

How to correctly use the internal and external circulation on the car, teach you in a minute, fuel-saving and convenient.

Si Youpu said that the car, how to use the internal and external circulation function on the car.

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Therefore, the outer loop button is the inner loop button, and this button can also achieve a variety of functions.

1. Short press the inner circulation button, the indicator light is on, and the internal circulation is realized.

2. Short press the inner circulation button, the indicator light goes out, and the external circulation is realized.

3. Press and hold the inner circulation button to close and open the window with one key, which is especially useful when you suddenly encounter thick smoke, dust and other polluted road conditions when driving with the window open.

External circulation - to supplement fresh air, internal circulation - to block dirty gases. The internal and external circulation state is to use the fan to suck the air outside the car into the car, that is to say, the air channel outside the car and inside the car is circulating, and the air from the fan comes from outside the car.

Is the internal and external circulation Shiji Split? How does it work? When the external circulation button is pressed, the air enters through the airway under the windshield wiper, and after being cleaned by the air filter, the air flow flows through the evaporation tank and is sucked into the car under the action of the blower.

At this time, the airflow outside and inside the car is circulating, and even if the fan is not turned on, there is still airflow inhaled into the car when the vehicle is moving. and the inner circulation mode.

The outer circulation is used to replenish fresh air, while the internal circulation is used to block the dirty gas. How to use the external circulation and internal circulation of the car is as follows:

1. When the traffic is jammed, the inner circulation is used, and the external circulation will make the car full of tail odor.

2. In addition, when driving in summer, it is more fuel-efficient to use internal circulation.

3. On the high-speed with external circulation, it is inconvenient to open the window for ventilation on the Liangzi Expressway, so open the external circulation at this time, so that there is always fresh air in the car, which is conducive to keeping a clear mind.

4. When using the air conditioner, the internal circulation and the external circulation are used alternately, and after the vehicle is started in winter, let the car be warmed up for a period of time, and then turn on the heater.

5. First adjust to the external circulation to let the cold air in the car be discharged, and then adjust to the internal circulation with the slag cavity ring to warm up the car, which is more fuel-efficient.

The outer circulation of the car can be turned on directly by pressing the button on the center console, the key sign of the outer circulation is an arrow pointing from the outside of the front windshield of the vehicle, and the key sign of the inner circulation is an arrow drawn a circle from the inside of the car.

Because some cars are designed to have no external circulation button, only an internal circulation button, then in this case, usually the light on the inner circulation button is on this slippery internal circulation, and the light is out is the external circulation state. When you find that the light is on, press the light again and it will go off, and you can enter the state of external circulation. When driving at high speed, it is generally inconvenient for the owner to open the window for ventilation, and the external circulation mode can be turned on at this time.

Correct operation

The heating and refrigeration principle of automobile air conditioning is actually very simple, when refrigerating, you need to press the AC button, at this time the compressor clutch will be combined, so that the engine will drive the compressor to run, at this time the compressor continues to compress the refrigerant, and the refrigerant is delivered to the evaporation tank.

The refrigerant expands and absorbs heat in the evaporation box, which can cool the evaporation box, and the cooled evaporation box can cool the air blown by the blower, so that the air conditioning outlet can blow cold air. When the heater function is turned on, the high-temperature coolant in the engine will flow through the heater water tank, and the air blowing from the blower will also pass through the heater water tank, and the air conditioning outlet will blow warm air at this time.