How to Check How Much Fuel is Left in the Fuel Gauge?
1 Answers
To check the fuel level in the fuel gauge: 1. When the needle is at the 'F' position, it indicates the tank is full; 2. When the needle approaches the 'E' position, it means the fuel level is decreasing and immediate refueling is required. The purpose of the fuel gauge is to indicate the amount of fuel stored in the car's fuel tank and to remind the driver to refuel in time. The working principle of the fuel gauge is: when the fuel tank is full, the resistance value of the variable resistor connected to the float decreases, causing the circuit current to reach a higher value, which positions the fuel gauge needle at a higher level; when the fuel level drops, the resistance value of the variable resistor increases accordingly, reducing the circuit current and causing the fuel gauge needle to lower as well.