| 摘要 |
PURPOSE: A fuel gauge level system of a vehicle is provided to prevent wrong indication of a fuel gauge from contact resistance, and to display the remaining amount of fuel to a driver accurately by preventing contact resistance from silver sulfide, silver oxide or foreign matters in eroding the contact point of the level sender unit. CONSTITUTION: A fuel gauge level system comprises a level sender unit(100) installed in a fuel tank of a vehicle, and a fuel gauge(300). A conduction resistance(120) is installed inside or outside the level sender unit to increase conductive current of the contact point of the level sender unit. The level sender unit has a level resistance(110) varying the resistance value by a moving piece(111) interlocking with a float, the conduction resistance connected to the level resistance in series, and ignition power or conductive voltage connected to the conductive resistance in series. An ECU(200) includes a pull-up resistance(220) connected to the level resistance and a power unit(210) in series, a monitoring resistance(230) connected to the pull-up resistance and an AD converter(240), and transmits the voltage drop value through the AD converter to the fuel gauge.
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