Patent ID: 8291946

Claim:
An apparatus for sensing a fuel level, adapted to sense a residual amount of fuel in a fuel tank by contacting a resistance substrate with a wiper, the apparatus comprising: a case that forms a sealable filling solution filling space therein and includes a base body, having an open part formed on one side thereof, and a cover coupled to the open part of the base body to seal the filling solution filling space in a first direction; a filling solution inlet that is formed on a top surface of the base body and extends in a second direction that is substantially perpendicular to the first direction, the filling solution inlet having an opening area smaller than an opening area of the open part of the case; a stopper that is coupled to the filling solution inlet and blocks the filling solution inlet to seal the filling solution filling space in the second direction; and a filling solution that is filled in the filling solution filling space to perform an anti-rusting and lubricating function, the filling solution being injected into the filling solution filling space through the filling solution inlet, wherein the resistance substrate and the wiper are disposed in the filling solution filling space, and wherein the filling solution inlet is disposed at a higher position than the resistance substrate and the wiper disposed in the filling solution filling space when installing the apparatus for sensing the fuel level.