How to correctly check the remaining amount of fuel gauge for automobiles.

How to see the remaining fuel quantity with pointer fuel gauge

Both the pointer and the digital fuel gauge can only be read after starting the vehicle. The pointer fuel gauge is marked with two letters, e and f, and e is the initials of Empty, which means empty; F is the initials of Full, which means full. The closer the pointer is to the letter F, the more oil remains, and the closer the pointer is to the letter E, the less oil remains. The fuel icon is lit, indicating that the fuel quantity is low, and it needs to be refueled as soon as possible.

What do you think of digital fuel gauge?

The digital fuel meter indicates the remaining fuel quantity through the cruising range and the number of squares lit on the dial. The more cruising range or the number of lighted dials, the more fuel left. If the cruising range is low or the number of lighted dials is 1-2, it means that the oil quantity is low and needs to be replenished in time.

Extended data:

The fuel gauge only roughly shows the fuel quantity, but it can't accurately show the remaining fuel quantity, and can only give the driver a reference value. For example, the digital fuel gauge shows that the cruising range is 300 kilometers, but in fact, due to factors such as car condition and road conditions, it may only travel 150 kilometers.

Working principle of fuel gauge

The fuel system is mainly composed of fuel gauge, sensing circuit, variable resistor and buoy. When the oil tank is full, the resistance of the variable resistor connected to one end of the buoy becomes smaller, and the current of the whole circuit reaches the maximum, at which time the oil gauge pointer is at the highest position; When the fuel consumption decreases, the resistance of the variable resistor increases correspondingly, the circuit current decreases, and the indicator of the fuel gauge also decreases.