Fuel gauge sensor working principle

How fuel gauge sensors work

How fuel gauge sensor works

actually This works: a sliding rheostat.

When the amount of oil is sufficient in the float of the fuel tank, on the oil surface, the resistance of the oil meter sensor becomes smaller, and the current received by the fuel gauge becomes larger.

When the oil quantity decreases, the float decreases with the oil level. At this time, the resistance of the oil meter sensor becomes larger, and the current received by the fuel gauge becomes smaller.