FUEL LEVEL MEASUREMENT USING IN-TANK MEASURING SYSTEM

摘要

An apparatus for measuring the level of fuel in a fuel tank is disclosed. The apparatus comprises an in-tank measuring system that provides an oscillating output signal generated, for example, by an oscillator such as a multivibrator, where the oscillating output signal has a frequency corresponding to the fuel level. The in-tank measuring system includes a capacitive fuel probe mounted within the fuel tank to contact the fuel. The fuel probe has a capacitance that is a function of the level of the fuel. The oscillator is configured for mounting within the fuel tank at a position in close proximity to the capacitive fuel probe. The oscillator circuit uses the capacitance of the fuel probe to generate the oscillating output signal. A communication path communicates the oscillating output signal from the clock circuit to a circuit exterior to the fuel tank.

主权项

1. An apparatus for measuring a level of fuel in a fuel tank comprising:
an in-tank measuring system configured for mounting at a predetermined position within the fuel tank, wherein the in-tank measuring system is further configured to generate an oscillating output signal at the predetermined position, wherein the oscillating output signal has a frequency corresponding to the level of the fuel; an electrical circuit exterior to the fuel tank; and a communication path configured to communicate the oscillating output signal from the predetermined position of the in-tank measuring system to the electrical circuit exterior to the fuel tank.