The cold air in recent days not only brings dampness and coldness, but also the trouble of fogging the front windshield. With this old problem that seriously affects traffic safety, let's take a look at the causes of fog and what are the fog Coups.
First, the production of fog on the principle of the production of fog inside the window, we do not make complicated statements. In simple terms, it is caused by the temperature difference between "outside cold and internal heat." The temperature inside the car is higher than the outdoor temperature, and the fog is formed. The water mist referred to in this article refers to the inside of the glass, so the wiper does not have a large effect.
Second, the method of defogging Defogging a variety of ways, in fact, simply divided into two kinds of money and no money. Convection by windowing does not bring additional overhead, but there are many constraints. The use of air-conditioning and defogging should be the most common, but there are also special restrictions on opening the cold air or opening hot air, which will be introduced later. The market of special defogging agents is mixed, and the price range is also not easy to distinguish. It is recommended that you use self-made defogging agents. The specific methods will be introduced in detail.
1. Window Convection If you find that the fog inside the car is not large, you can open the window on both sides of the window, so that the air inside and outside the car to form convection, the temperature difference will be reduced, the fog will slowly disappear. The principle of this method is the same as that of air conditioning, but it does not increase fuel consumption. The disadvantages of window convection are very obvious. Rain and snow weather, high-speed roads, and large fog are not available, and window opening will reduce the temperature inside the car.
2. Air Conditioning System For most vehicle owners, the use of air conditioning systems for defogging is the most common. Nowadays, basically all of the front windshields on the market have air-conditioning outlets. The air-conditioning system can be used to remove air from the wind by simply selecting the air conditioner to the appropriate position. But with cold or warm air, the cold/warm winds have their own advantages and disadvantages. If you are in a hurry, you can use the cold wind to respond. In most cases, it is recommended that you use warm air.
Open the fan and cooling switch in the car, and the mist will quickly disappear when the cold wind blows onto the front windshield. The effect is very direct. But the biggest drawback of this method is that people in the car feel very cold. In the very cold winter, the air-conditioning cold wind was not good. And after closing the cold wind, the fog may reappear. Therefore, we do not recommend the use of cold air to remove fog.
The effect of blowing glass with hot air is better than blowing with cold air. However, since the temperature of the water is very low at the time of starting, it takes a period of time for the air conditioning to blow out hot air. Therefore, the time is longer than blowing with cold wind. At the beginning, the fog in the interior of the car will become even larger. This is because the temperature difference between inside and outside is greater. After the hot air is dried, the fog will disappear. Special Note: If you use this method, be sure to use warm air to remove fog before driving and wait for the fog to completely disappear.
3, Deodorant Auto Parts City, supermarkets and many other places have sold. The defogging agent is sprayed on the inner surface of the automobile glass and wiped clean to remove the glass dirt. At the same time, it can also form a protective film to prevent condensation of water vapor on the glass and form a layer of fog. Once sprayed, it can prevent fog for ten days. about. Prices range from a dozen to a hundred dollars. Currently, there is a mixed mess of the aerosol market, so it is easy to buy products with poor results. In fact, you don’t have to spend money to make it.
In fact, we can completely blend the "anti-fogging agent" and the effect is not bad. The easiest way is to use the detergent blend. The detergent and water are dispensed in a ratio of 1:10, then applied to the inside of the front and rear windshields with a clean and soft cloth, or poured into a small watering can. This method is simple and saves money. It is recommended that you try.
Rear windshield and exterior mirror defogging The vehicles currently on the market are basically equipped with “after wind electric heating†function, and the key positions will be different, but the functions are the same. Turn on the rear windshield heating switch and the windshield fog disappears in about one minute. It is worth noting that if you wipe the back wind, be sure to follow the direction of the resistance wire.
In dry climates, exterior mirrors are generally not prone to fogging. Even if it does, the removal method is simple. If your car is equipped with electric heating function of the exterior rearview mirror, just turn on the switch and the mist will disappear quickly. Without this feature, you can only "manually" remove the fog.
Summary: Comprehensive comparison of these methods of defogging, the more recommended methods are homemade defogging agent and warm air defogging. Regardless of economics or comfort, this method is better. The purpose of the defogging is to improve driving safety, so please remember that no matter which method is used to remove fog, it must be carried out before driving.
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