說起油箱大家應該都不陌生，只要是需要燃油的車輛都是有油箱的，專用車中的小型混凝土攪拌車也不例外，為了防止油箱內的燃油因震蕩而外濺及燃油蒸汽的遺失和外部灰塵的進入，油箱都加蓋而且要密封，但是你們發現沒有，油箱上是有一個小氣孔的，那這個氣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?

封閉的油箱會因為燃油的消耗而形成一定的真空度，導致油泵失去吸油能力；油箱內氣溫較高的時候，燃油揮發會增大油箱內部的壓力，導致氣壓失衡。那么油箱的透氣孔一般都安裝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. 安裝在油箱蓋內置閥門上：它可以根據自動開閉，平衡內外氣壓。

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. 安裝在油箱鑰匙孔閥門上：這種在老車型上比較常見。

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

3. 油箱外置通氣孔：現在的商用車大多都是在油箱頂部預留通氣孔，便于吹氣檢查，比如混凝土攪拌車、隨車吊等等。

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.

所以如果你的專用車油箱蓋上帶有透氣孔，一旦油箱蓋丟失切勿隨意封死油箱口，而忽視了通氣性。曾經有個卡友在給車輛放油的時候，忘記打開加油口，后導致油箱吸癟，這就是真實的教訓，希望各位卡友們引起重視。

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.

油箱透氣孔堵塞不僅會導致油箱吸癟，還會導致油泵無法抽取燃油，進而出現熄火、動力不足或者熱機狀態啟動困難等現象，嚴重時還會導致油箱變形破裂，導致燃油泄漏或者火災爆炸等危險。

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.

下面說一下怎么預防小型混凝土攪拌車的油箱透氣孔堵塞：

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

1. 經常檢查透氣孔，防患于未然。

1. Check the vent frequently to prevent problems.

2. 在加油時留意油箱蓋開啟時的氣流聲，一種是出氣聲，這種聲音是正常的，另一種是吸氣聲，此時要注意，這可能是油箱內的壓力低于外部壓力，油箱透氣孔有可能是堵塞了。

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. 對于鐵質的透氣孔，好用紗窗包一下，如果是透氣孔是塑料軟管，那就將其口朝下，這樣可以避免堵塞。

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.

從以上可以看出，油箱透氣孔的作用還是很大的，大家在平時一定要多注意一下愛車的油箱透氣孔。更多相關實現就來我們網站http://www.apstzs.com咨詢吧！

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 http://www.apstzs.com Consult!