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，专用车中的自上料水泥搅拌车也不例外，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？

When it comes to fuel tanks, everyone should be familiar with them. Any vehicle that needs fuel has a fuel tank, and the self loading cement mixer truck in specialized vehicles is no exception. In order to prevent the fuel inside the tank from splashing out due to vibration, loss of fuel vapor, and entry of external dust, the fuel tanks are all covered and sealed. However, have you noticed that there is a small air hole on the fuel tank? What is the purpose of this air hole?

油箱上如果没有气孔会发生什么情况呢？

What would happen if there were no air holes on the fuel tank?

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。

A closed fuel tank will form a certain degree of vacuum due to fuel consumption, causing the oil pump to lose its suction capacity; When the temperature inside the fuel tank is high, fuel evaporation will increase the pressure inside the fuel tank, leading to an imbalance in air pressure.

那么油箱的透气孔一般都安装在油箱的什么地方呢？

So where are the ventilation holes of the fuel tank usually 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 fuel tank cover: it can automatically open and close, balancing 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. Installed on the fuel tank keyhole valve: This is more 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. External vent holes in fuel tanks: Most commercial vehicles nowadays reserve vent holes at the top of the fuel tank for easy air blowing inspection, such as concrete mixer trucks, truck mounted cranes, etc.

所以如果你的自上料水泥搅拌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，希望各位卡友们引起重视。

So if your self feeding cement mixer truck has a vent hole on the fuel tank cap, do not seal the fuel tank port arbitrarily once the fuel tank cap is lost, ignoring the ventilation. Once, there was a card user who forgot to open the fuel filler when draining a vehicle, which caused the fuel tank to deflate. This is a real lesson, and I hope all card users will take it seriously.

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 holes of the fuel tank not only causes the fuel tank to suck out, but also causes the oil pump to be unable to extract fuel, resulting in phenomena such as stalling, insufficient power, or difficulty starting the hot engine. In severe cases, it can also cause deformation and rupture of the fuel tank, leading to fuel leakage, fire and explosion hazards.

下面说一下怎么预防油箱透气孔堵塞：

Here's how to prevent clogging of the fuel tank vent:

1.经常检查透气孔，防患于未然。

1. Regularly check the ventilation holes to prevent potential 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. When refueling, pay attention to the sound of airflow when the fuel tank cap is opened. One is the sound of exhalation, which is normal, and the other is the sound of inhalation. At this time, it should be noted that the pressure inside 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 iron breathable holes, it is easy to wrap them with a screen window. If the breathable hole is a plastic hose, the mouth should be facing downwards 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。您有什么疑惑或者需求就来我们网站http://www.sdzkjf.cn咨询吧！

From the above, it can be seen that the function of the fuel tank vent is still significant. It is important to pay more attention to the fuel tank vent of your car in daily life. If you have any doubts or needs, please come to our website http://www.sdzkjf.cn Consult!