What to do if the windshield fogs up before the rain

When it rains, it is easy to fog up the windows when driving, and the front windshield is fogged together, which affects the driver's vision, and if it is serious, you may not be able to see anything clearly, which is very dangerous. So is there a better solution to the problem of fogging up the windows?

The main reason for fogging the front windshield is the temperature difference and humidity, the temperature will be lower on rainy days, and the humidity will be very high, so fog will be formed. And because the outside temperature is lower than the inside of the car, this fog is generated on the inside of the glass and cannot be cleaned with windshield wipers. In fact, we know that the most effective and simple way to clear the fog is to open the window for ventilation, keep the temperature inside and outside the car consistent, and reduce the temperature difference, but what should I do if I can't open the window on a rainy day?

The air conditioning system of the vehicle actually has a special defogging function, find a fan-shaped one and then there are a few buttons with a broken line graphic on it, which is the switch of the front windshield defogging function. Turn on the defogging function, the air conditioning system will blow air on the front windshield, and the compressor will also automatically turn on, blowing cold air, which can reduce the temperature difference as soon as possible.

Next to the front windshield defogging function, there will generally be a rectangular switch with a broken line pattern, which is the rear windshield defogging. The rear windshield of the vehicle is defogged by an electric heating wire instead of blowing, and the method is different. Because the glass with the heating wire is more expensive and the cost is higher, and the breakage rate of the front windshield glass will be higher than that of the rear windshield, so generally only the rear windshield is electrically heated.

However, there are now more and more vehicles with heating wire heating methods for the front windshield, so it is more convenient to deal with fogging.

How to clear the fog of the front windshield on a rainy day, in fact, the vehicle has been designed and produced with this problem in mind, so it will come with its own defogging function, as long as you find that a little fog begins to generate, you can turn on the switch immediately. Now there are also sprays that specifically prevent glass fogging, and we can also spray on the inside of the glass in advance to do a prevention, which will be better.

What to do if the front windshield of a car fogs up? With these tips, there's always a trick for you! The main reason for the fogging of the car window is that the temperature inside the car is lower than the temperature outside the car, so the water vapor condenses into water mist and attaches to the windshield, which will not only cause visual distress, affect the driving mood, and may even cause a car accident due to the road conditions that cannot be seen clearly.

The wipers of the car also do not work because the water mist is formed inside the car.

What's the solution?

1.Air conditioning system.

Turn on the front windshield defroster, and the air outlet under the car's front mirror will remove the fog. In addition, it is also possible to turn the air conditioner of the car (low). When the temperature inside the car is lower than the outside, the water mist on the front windshield gradually disappears.

But not everyone likes to blow cold air, which can cause others to catch a cold, and the water mist may reappear if the air conditioner is turned off.

2.Turn on the car vent.

Turning off the recirculation function will cause the temperature inside the car to start convection with the temperature outside the car, and then the temperature difference will decrease and the water mist will slowly disappear.

3.Open the left and right windows.

Open the left and right windows of the car, this method is the same as opening the car vent, reduce the temperature difference between the outside of the car and the temperature inside the car, and then the water mist will be removed. This method is also suitable for working with the opening of the car air vent, which will be more effective in removing the water mist.

4.Defogging agents.

The defogger can be bought in nearby shopping malls, car decoration stores or major online sales platforms. Depending on the brand of mist remover, the price ranges from a few dollars to dozens of dollars. At present, there are too many brands of defogging agents in the market, so it is relatively easy to buy products with poor results or knock-off products.

It is very easy to use a mist eliminator. If you buy a defogger, you should spray it on the inside of the large mirror and repeat it several times, which will form an effective protective film and prevent the birth of water mist. Each defogger has a different expiration date, and some protective films have a short expiration date and require multiple sprays to maintain the effect.

In the rainy day in Malaysia, the car is easy to fog up, in order to ensure your own driving safety, hurry up and learn! The next time you encounter this kind of problem, you will know how to solve it!

Fogging of car windows is most likely to occur in two situations, one is a rainy day, the other is winter, in winter, you will generally find that the window is fogged before driving, which is easier to deal with; But whether it's summer or other seasons, maybe when we are driving, a rain falls, and the windows will suddenly fog up, in this case, sometimes it can be difficult to deal with.

It's easy to understand why car windows are easy to fog up when it's cold in winter, but why are car windows easy to fog up on rainy days? Actually, there are two main reasons.

First of all, when it rains, the temperature difference between the outside of the car and the inside of the car is relatively large, even if it is a rainy day in summer, there will be a temperature difference between the inside and outside of the car, the temperature outside the car is low, and the temperature inside the car is high, then the temperature of the window glass will also be reduced at this time, and the moisture in the car will condense into water mist after encountering the cold window.

In addition, on rainy days, the humidity in the air is relatively large, and when the door is closed, the water on our feet is brought into the car, and the moisture in the car will also increase, so it is easier to form fog.

So how do we prevent fogging in the windows on such a rainy day? Suddenly there is fog, how should we deal with it quickly?

There are several ways to do it.

First of all, the first method is to equilibrium the temperature inside and outside the car, so that the windows do not fog up due to temperature differences. How do you achieve temperature equilibrium? There are two methods, one is to open the window, and the other is to open the external circulation, both for the same purpose, to form a convection flow of air outside and inside the car.

However, these two methods have drawbacks, for example, if you open the window, the rain outside the car will hit the car, if the window is installed with a sunny and rainy block, it can open a crack, but whether it is a car window or the two ways of using the external circulation to blow the window, although it can play the role of defogging, however, it takes a long time, at least ten minutes to remove the fog, so it is not suitable for the situation of sudden fogging during driving.

The second method, defogging is relatively fast, which is to reduce the temperature of the window while adding the function of dehumidification. It is to turn on the air conditioner of the car and use the wind to quickly blow the windows to defog. First of all, the car air conditioner blows cold air, which can quickly reduce the temperature in the car, and blowing the window can quickly reduce the temperature of the window, so that the temperature of the inner surface of the window can quickly reach the same temperature as the outside of the car, so that the fog can disappear quickly.

However, if the air conditioner is turned off at this time, after a while, the temperature in the car will rise again, and fog will be formed, so it is generally necessary to turn on the air conditioner for a while and use the air conditioning compressor to remove the moisture in the car, so that you can keep the car free of fog for a long time.

Therefore, if we are driving and suddenly the window fogs up, we do not hesitate to turn on the car air conditioner, turn on the defogging button, and let the cold air of the air conditioner blow vigorously on the window, basically within 3 seconds, the fog will be quickly removed. Then you can turn the air volume down, let the air conditioner turn on for a while, remove the moisture in the car, pay attention, at this time to open the internal circulation, do not use the external circulation, otherwise the moisture outside the car will be convected into the car, which is equivalent to no dehumidification.

You can wipe it with your hands, or open a little window, or buy a special defogger, which is very dangerous and must be paid attention to.

Turn on the cold air conditioner, because the outside temperature is lower than the inside of the car when it rains, so it is easy to condense into fog when people breathe or there is water vapor in the car, so turn on the cold air conditioner to keep the temperature in the car close to the outside temperature, you can avoid fogging.

1. Warm air defogging.

2. Cold air defogging.

3. Defogging of window seals.

4. Convection air defogging.

5. Wipe directly with a rag.

6. Add water to the washing spirit.

7. Anti-fog spray.

The solution to fogging the front windshield on rainy days: the correct way is to use the air conditioner to defog, turn on the air conditioning refrigeration and external circulation, and reduce the temperature difference between the inside and outside; The most curative method: air conditioning hot air or heating; You can also use air conditioning defogger, which is the most labor-saving and fast method; Opening windows for convection, increasing air convection after opening windows, reducing the temperature difference between inside and outside the car, and weakening the fog formation conditions, this is the most economical method.

1. Air conditioning defogging: This is the most labor-saving and fast method. Find the front window defogging switch, then adjust the wind speed to the maximum, turn on the A C switch, and then adjust the temperature to the lowest, and the fog on the glass will disappear after a while.

In addition, the rear windshield and exterior mirrors of some models are equipped with electric heating, which can be used to eliminate fogging in about a minute after the switch is turned on.

2. Take air conditioning hot air defogging: if the car has just started, don't start the air conditioning for the time being, wait until the engine is preheated for a few minutes, after the water temperature comes up, then start heating, adjust the air volume to the maximum, and then turn on the front window defogging mode, and the fog can disappear in a few minutes.

3. Open the window convection: increase the air convection after opening the window, reduce the temperature difference between the inside and outside of the car, and weaken the fog formation conditions, this method seems to be very economical, but the situation is too little to really suit, if it is raining outside, it is impossible to open the window, and the wind blowing in is also limited.

4. Use defogging agent: When using, you only need to spray it evenly on the glass surface, and then wipe it clean with a dry towel. Principle:

The method of using surfactant retains a certain protective film on the surface of the glass, changes the surface tension of water molecules, and makes the fog beads condense into large water droplets, so as not to block the line of sight. This is also true for other glass in the car, especially on the exterior mirrors.

What should I do if the front glass of my car fogs up on a rainy day? Come in and learn, don't let your vision cover your eyes.

The development of modern sedan appearance is closely related to the development of glass technology. As early as more than 40 years ago, the front windshield of a sedan has adopted a single-piece curved windshield, and gradually abandoned the flat windshield.

Glass water can be sprayed, and there is a surfactant in the glass water, which can delay fogging.

The use of air conditioning system to defog is to learn, different from the use of defogging agent, the use of air conditioning system means that the glass fogs up during driving, then we should turn on the front window defogging mode, and then adjust the wind speed to the maximum, turn on the A C switch, and then adjust the temperature to the lowest, and the fog on the glass will be gone after a while.

Fogging up the front windshield on a rainy day can:Open windows for ventilation, heating and defogging, refrigeration and defogging, and use chemicals.

1. Open windows for ventilation.

If there is not a lot of rainfall, just some drizzle, then you can choose to open the front and rear windows in a slit, preferably in the form of a diagonal. In this way, as long as the car is moving, the air from the outside can enter the car and circulate inside, and finally exit through the rear window. Without the temperature difference, the fog disappears naturally.

2. Heating and defogging.

If the rainfall is relatively heavy, then you can't open the windows to ventilate and dissipate the air, so you can only take other ways to remove the fog. Since there is fog on the window, it can be evaporated directly with hot air, so that the fog will disappear, and many cars have a one-key heating defogging button, which can be defogged as long as it is opened. It's just that this will make the fog worse in the first few minutes, so use it when it's safe to do so.

3. Refrigeration and defogging.

If the car is moving, it is a bit dangerous to use heating to defog because it will block the view, then you can turn on the air conditioning to defog at this time. Since the fog is caused by the temperature difference, if we lower the temperature inside the car so that the temperature inside and outside is the same, then the fog will not be generated. However, this method is difficult in the winter and can only be used on demand.

4. Use chemicals.

There are a lot of defogging sprays on the Internet, as long as it is sprayed on the windshield, the fog will not continue to be generated, so car owners who have the conditions can buy one or two bottles and put them in the car. If you want to save a little money, you can also use soapy water or soapy water, which also has the same function.

The cause of fogging of the front glass of the car on a rainy day.

The fog in the windshield of the car is due to the large temperature difference between the inside and outside of the car, and the carbon dioxide exhaled by the driver and occupants in the car contains a lot of water vapor, and the water vapor will condense into small water droplets when it encounters the cold glass.

When the windshield fogs up, open the windows on both sides, about a fist wide, to allow the air in the car to convection, which can eliminate the fog from the windshield. Or you can use the cold air from the air conditioner in the car to quickly remove the fog. Align the air conditioning outlet with the front windshield, adjust the air volume to the maximum, and press the refrigeration button to directly act on the "affected area", but the people in the car will feel very cold.

Fogging the windshield before driving on rainy days can be done as follows:

1.Use warm air to blow the windshield.

Adjust the temperature of the air conditioner to the position of the warm air, automatically adjust the temperature of the air conditioner, rotate the direction switch, adjust to the blowing glass, and the fog will disappear after a while, and the effect is very obvious.

2.When the heater is turned on, the external circulation is turned on and the compressor is turned on at the same time.

Dehumidify the inhaled air, so that the defogging effect is particularly fast, which is the dehumidification function of the air conditioner, these relatively dry air continue to advance to the warm air tank, and the heated dry air blows to the windshield, which instantly absorbs the water vapor on the windshield.

3.Use specialized mist removal products.

Before driving, spray the defogger evenly on the surface of the window glass and wipe it clean with a dry towel. The principle of using fogging remover is that it will form a certain protective film on the surface of the car window, changing the surface tension of water molecules, so that the probability of fog beads forming is reduced.

Precautions for driving in rainy weather:

Prevents tires from slipping

When the ground is wet in rainy weather, it is easy for tires to slip sideways, so you should not brake sharply when cornering, and it is best to slow down in a straight line before entering the corner.

If you encounter an emergency and need to brake suddenly, don't panic, either twist the steering wheel to avoid, or brake in a straight line, do not brake and avoid at the same time, this will not play any role.

Slow down

Regardless of the width of the road and the condition of the road surface, slow down when driving in the rain, pay attention to the distance between the vehicles in front and behind and your own car at any time, and be mentally prepared to take various emergency measures in advance.

In rainy days, the visibility is low, the visibility is poor, and the vehicle's braking distance and other emergency performance will also be reduced, so it is necessary to slow down in advance and leave enough time and space to deal with the situation to ensure safety.

Keep an eye out for pedestrians

Due to the fact that pedestrians hold umbrellas in the rain and cyclists wear ponchos, their vision, hearing, and reaction are restricted, and sometimes they are in a hurry to cross the sharp turn, and often panic and slip when the vehicle is approaching, which catches the driver off guard.

In this case, the driver should slow down, be patient and avoid, choose a safe place to stop if necessary, and do not rush to pedestrians and bicycles.