The fuel level sensor is a crucial device in a vehicle's fuel system that monitors the remaining fuel, with the primary function of real-time detecting the height of the fuel level in the tank and converting the physical signal into an electrical signal, which is then transmitted to the fuel level indicator on the dashboard for an intuitive display of the remaining fuel, helping drivers determine the appropriate time to refuel.
Its core structure typically includes a float, a linkage, and a variable resistor. The float moves up and down in response to changes in the oil level, and the linkage drives the slider of the resistor to move, thereby altering the resistance value in the circuit, which in turn causes a change in the current, thus realizing the conversion between the oil level and the electrical signal.
High-quality sensors must have high precision, resistance to oil corrosion, and vibration resistance to ensure stable operation under complex conditions such as vehicle jolting and temperature changes.
Some models of sensors are also linked to the onboard computer, which uses fuel consumption data to estimate the driving range, thereby enhancing the convenience of driving and serving as an important component in ensuring the normal operation of the vehicle.
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