What is a small hole in the diesel generator group fuel tank cover?

If you pay attention to the diesel generator set of fuel tank covers, there is a small air hole. Why is this? This is not only easy to enter air, moisture and dust in the tank, but also easy to fuel volatilization. Naturally, there is such a bad point to leave such a small air hole? The scientific truth is still a diesel generator set manufacturer to give you an analysis. In the eyes of diesel generator, these pores have a great impact on the normal use of the unit, and the performance of the generator sets also has a big need. Here, you will talk about everyone.
1: In order to prevent the fuel in the tank from splashing and the oil vapor from the oil vapor and the outer dust entering, the fuel tank should be covered and sealed. However, when the fuel is reduced by consuming, the oil tank will form a certain vacuum, so that the oil pump will lose oil absorption;
2: When the temperature is high, the fuel evaporates and oil vapor will make the pressure in the tank too much. Both of these conditions require it to automatically communicate with the atmosphere when the pressure difference occurs in the fuel tank. To this end, a vent hole is provided on the fuel tank cover to balance the air pressure outside the tank.
3: Use the ventilation hole on the fuel tank cover in use. If the vent hole is blocked or when the fuel tank is lost, the fuel tank is pulled by the fuel tank, and the inside of the fuel tank will form a negative pressure due to the decrease in the fuel liquid, thereby appearing that the engine work is not smooth, the power is lowered, the automatic flameout is The phenomenon is difficult to start in the hot machine state.
From the detailed introduction of the above diesel generator group manufacturers, I believe that everyone has already understood that although the air hole is an opaque design, the role is very large, so, in the process of using the diesel generator set, everyone should take the initiative to pay attention to the air hole status. , Pay more attention to whether the air is blocked to ensure the combustion efficiency of the diesel generator set.