The Guidelines for the Use of Car Air Conditioners

Many drivers can be said to be leveraged in terms of car driving skills, but they are very easy to fall into misunderstandings in the use of certain cars, and often can not find the reason, and it is more difficult to prescribe the right medicine.

Today, Guchen Industry will tell the car friends about one of the car use. The most easily overlooked device-car air conditioner.

Car air conditioners can be said to be one of the most user-friendly devices in cars. They can cool and heat the air in our cars. Ventilation and air purification. Based on these important functions of automobile air-conditioning, automobile air-conditioning devices have now become one of the signs that measure the completeness of automobile functions.

Today, Guchen Industry will fully analyze car air conditioners from the following aspects:

1. How to use the internal and external circulation of car air conditioner?

2. Will turning on the air conditioner increase the car's fuel consumption?

3. Should I turn on A/C when I turn on the heating and air conditioning in winter?

4. What should I do if the car air conditioner has a peculiar smell?

5. Why does the car air conditioner have insufficient cooling?

6. How to extend the service life of car air conditioners?

The following Guchen Industry will explain in detail to the riders point by point:

1. How to use the internal and external circulation of car air conditioner?

In layman's terms: the inner loop is to close the door to open the air conditioner, while the outer loop is to open the door to blow the air conditioner. The internal cycle has a faster cooling effect and is more fuel-efficient; the external cycle can ensure the freshness of the air in the car.

Internal circulation use: Use when the air quality outside the car is not good, or the temperature inside the car needs to be quickly cooled or warmed up. But do not use the inner loop for a long time! Most of the accidents in the summer suffocating cars that are common in news headlines are caused by the open internal circulation mode and insufficient oxygen supply in the cabin.

External circulation: use when it is necessary to improve the air quality in the car, or to defog the windshield on rainy days.

Small tips: use inner loop for traffic jam and outer loop for high speed.

2. Will turning on the air conditioner increase the car's fuel consumption?

The air-conditioning air-conditioning is cooled by a compressor to achieve the cooling effect. This process requires an engine to transmit power, so it consumes more fuel. According to media tests, when the air conditioner is set to 24 degrees and there is one passenger in the car, Sagitar's idling speed turns on the air conditioner for 2 hours to supplement 2.91L, the pure idling speed 2 hours to supplement 2.1L, and the pure air conditioner consumes 0.81L. This can already reflect the air-conditioning fuel consumption of ordinary family cars, and the fuel consumption will be slightly higher if it is driven. The air-conditioning and heating system uses a small fan to conduct heat into the car while the engine's cooling system dissipates heat from the engine. Therefore, car heating belongs to waste recycling and does not require an engine to provide power, so it does not consume fuel.

3. Should I turn on A/C when I turn on the heating and air conditioning in winter?

It is not necessary to turn on A/C to turn on heating and air conditioning in winter. Because heating does not require compressors to work. However, on rainy days, the temperature difference between the inside and outside of the car is large, and just after the fog is removed, turning on the A/C can prevent fogging. If it is opened every 2 weeks, it will also have a certain conservation effect.

4. What should I do if the car air conditioner has a peculiar smell? How to avoid it?

When the air conditioner is turned on, there is a peculiar smell, which is basically the problem of the air conditioner filter or the evaporator.

Air-conditioning filter element: Located in the air-conditioning duct, the main function is to filter large-size particles, pollen, fluff and small bugs. If it is not cleaned for a long time, the various impurities intercepted on the filter element will react in a high temperature and high humidity environment, and it is easy to produce peculiar smell.

Evaporator: The heat exchange component of the automobile air conditioner. When cooling, the refrigerant absorbs heat and vaporizes at the evaporator position, so that the temperature of the evaporator is reduced. There will be a lot of condensed water in the evaporator, and many dust or microorganisms that cannot be filtered by the air-conditioning filter element will also gather here, and there will be peculiar smells over time.

Solution:

--Replace the air conditioner filter element.

--Clean the air conditioner evaporator.

How to avoid it?

--A few minutes before turning off the air conditioner, first turn off the air conditioner ("AC" button), keep the fan running for a period of time, and continue to blow for 1 to 2 minutes to let the moisture on the surface of the evaporator evaporate as soon as possible, and prevent the wet surface from becoming a breeding ground for mold , It is not easy to produce peculiar smell.

--When the outdoor air is good, use the external circulation of the car air conditioner more. In this way, whether it is the peculiar smell of the new car or the musty smell of the old car, it is not easy to stay in the car.

--In the season when the air conditioner is not used, ensure that the blower can be turned on once a month to reduce the accumulation of dust and mold growth on the evaporation box.

5. Why does the car air conditioner have insufficient cooling?

--Too much refrigerant causes the cooling effect to decrease.

Maintenance method: It can be observed from the sight glass above the drying tank. If no bubbles can be seen from the sight glass when the air conditioner is running, and there are no bubbles even after the compressor stops, it must be caused by too much refrigerant.

--Too little refrigerant leads to insufficient refrigeration.

Maintenance method: Insufficient refrigerant can also be observed in the sight glass above the drying tank. When the air conditioner is operating normally, if there are continuous and slow bubbles in the sight glass, the refrigerant is insufficient. It needs to be added, but it should be noted that if the refrigerant is added from the low-pressure side, it is forbidden to pour the refrigerant bottle, and if it is added from the high-pressure side, it is forbidden to start the engine.

--Excessive impurities and micro-blocking in refrigerant and refrigerating machine oil cause insufficient refrigeration capacity.

--Moisture has penetrated into the air conditioning and refrigeration system. The drying tank in the automobile air-conditioning system is blocked due to excessive water absorption, making the cold air unable to pass smoothly.

--The condenser is too dirty to reduce the heat dissipation capacity.

6. How to extend the service life of car air conditioners?

Turn on and off the air conditioner correctly.

After exposure, do not turn on the air conditioner in a hurry, but first open the car windows, let the car drive, and let the air flow take away the hot air in the car. It should be noted here that the best opening of the car windows is diagonal Car windows are convective in the car. It is best to open the sunroof if there is a sunroof, so that the temperature in the car can be drastically reduced in a short time.

When you are about to arrive at your destination, turn off the bus air conditioning compressor in advance, use the external circulation mode to blow air, let the cold air in the pipe discharge first, then turn off the fire, keep the pipe dry, and use the internal and external circulation correctly when driving long distances.