说起油箱大家应该都不陌生，只要是需要燃油的车辆都是有油箱的，专用车中的小型混凝土搅拌车也不例外，为了防止油箱内的燃油因震荡而外溅及燃油蒸汽的遗失和外部灰尘的进入，油箱都加盖而且要密封，但是你们发现没有，油箱上是有一个小气孔的，那这个气孔是起什么作用的呢？

As far as fuel tanks are concerned, all vehicles that need fuel have fuel tanks, and small concrete mixers in special vehicles are no exception. In order to prevent the fuel in the fuel tank from splashing out due to vibration, the loss of fuel vapor and the entry of external dust, the fuel tanks are covered and sealed. But do you find that there is a small air hole on the fuel tank? What is the role of this air hole?

封闭的油箱会因为燃油的消耗而形成一定的真空度，导致油泵失去吸油能力；油箱内气温较高的时候，燃油挥发会增大油箱内部的压力，导致气压失衡。那么油箱的透气孔一般都安装在油箱的什么地方呢？

The closed fuel tank will form a certain degree of vacuum due to the consumption of fuel, resulting in the loss of oil suction capacity of the pump; When the temperature in the fuel tank is high, the fuel volatilization will increase the pressure inside the fuel tank, resulting in the imbalance of air pressure. Where are the ventilation holes of the fuel tank generally installed?

1. 安装在油箱盖内置阀门上：它可以根据自动开闭，平衡内外气压。

1. Installed on the valve inside the oil tank cap: it can be opened and closed automatically to balance the internal and external air pressure.

2. 安装在油箱钥匙孔阀门上：这种在老车型上比较常见。

2. It is installed on the key hole valve of the fuel tank: it is common on older models.

3. 油箱外置通气孔：现在的商用车大多都是在油箱顶部预留通气孔，便于吹气检查，比如混凝土搅拌车、随车吊等等。

3. Air vent outside the fuel tank: most commercial vehicles nowadays reserve air vent at the top of the fuel tank to facilitate air blowing inspection, such as concrete mixer, truck mounted crane, etc.

所以如果你的专用车油箱盖上带有透气孔，一旦油箱盖丢失切勿随意封死油箱口，而忽视了通气性。曾经有个卡友在给车辆放油的时候，忘记打开加油口，后导致油箱吸瘪，这就是真实的教训，cq9电子各位卡友们引起重视。

Therefore, if the fuel tank cap of your special vehicle has a vent hole, once the fuel tank cap is lost, do not seal the fuel tank opening at will, ignoring the ventilation. There was once a card user who forgot to open the fuel filler when he was discharging fuel to his car, which led to the fuel tank being sucked in. This is the real lesson. I hope you can pay attention to it.

油箱透气孔堵塞不仅会导致油箱吸瘪，还会导致油泵无法抽取燃油，进而出现熄火、动力不足或者热机状态启动困难等现象，严重时还会导致油箱变形破裂，导致燃油泄漏或者火灾爆炸等危险。

Blocking the vent hole of the fuel tank will not only cause the fuel tank to shrink, but also cause the fuel pump to be unable to extract fuel, resulting in flameout, insufficient power or difficulty in starting the hot engine. In severe cases, it will also lead to deformation and fracture of the fuel tank, resulting in fuel leakage, fire and explosion.

下面说一下怎么预防小型混凝土搅拌车的油箱透气孔堵塞：

Now let's talk about how to prevent the tank vent of small concrete mixer from clogging:

1. 经常检查透气孔，防患于未然。

1. Check the vent frequently to prevent problems.

2. 在加油时留意油箱盖开启时的气流声，一种是出气声，这种声音是正常的，另一种是吸气声，此时要注意，这可能是油箱内的压力低于外部压力，油箱透气孔有可能是堵塞了。

2. During refueling, pay attention to the air flow sound when the fuel tank cap is opened. One is the air out sound, which is normal, and the other is the air suction sound. At this time, it should be noted that the pressure in the fuel tank may be lower than the external pressure, and the fuel tank vent may be blocked.

3. 对于铁质的透气孔，好用纱窗包一下，如果是透气孔是塑料软管，那就将其口朝下，这样可以避免堵塞。

3. For the iron vent, it is easy to wrap it with a screen. If the vent is a plastic hose, turn its mouth down to avoid blockage.

从以上可以看出，油箱透气孔的作用还是很大的，大家在平时一定要多注意一下爱车的油箱透气孔。更多相关实现就来我们网站//capemaycitypolice.com咨询吧！

It can be seen from the above that the role of the fuel tank vent is still very big. You must pay more attention to the fuel tank vent of your car at ordinary times. More related implementations come to our website //capemaycitypolice.com Consult!