What Causes the Humming Sound Near the Fuel Tank After the Car is Turned Off?

1 Answers
Kira
07/30/25 12:11am
Car turned off after the fuel tank position has a humming sound is the sound of the fuel pump working, which is a normal phenomenon. The following is a related introduction about the car fuel tank: 1. Design principle: Utilize the heat energy generated by the engine during car operation to add a set of heat circulation system between the engine, fuel tank, and water tank. The original single fuel tank is designed as a combined fuel tank composed of a main fuel tank and an auxiliary fuel tank. 2. Fuel tank capacity calculation unit: The international standard uses L (liter) as the calculation unit for car fuel tank capacity. Different countries also have corresponding standards for car fuel tank capacity. In China, the car fuel tank capacity is regulated at 95% of the rated value, but depending on the actual situation, the actual capacity is generally larger than the nominal capacity, so there is no need to worry that the car fuel tank is smaller than the actual one.
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