Abstract: A sensor assembly for sensing the level and type of fuel in a reservoir is provided. The sensor assembly includes a pair of electrically conductive plates extending longitudinally between opposite ends and positioned in laterally spaced relationship with respect to one another. The pair of plates are encapsulated within a substrate of a less electrically conductive material to isolate the plates from one another and from their external environment. The substrate is of a spring-like material which is expandable and contractible in order to vary the height of the sensor assembly.

Abstract: This invention relates to a sensor element in a fuel system, and in particular, to an electro-static potential differential level sensor element for measuring fuel levels and fuel type in a fuel system. A sensor element includes two electrode plates mounted on a dielectric material and secured to a shield plate. The sensor element is extruded to form a three dimensional sensor element, such as a spiral coil, that has an increased capacitance detection ability to measure fuel type and level.

Abstract: A fuel tank assembly (12) is provided for containing liquid fuel and supplying that fuel, upon demand, to an internal combustion engine. The assembly (12) includes a tank (14) in which is disposed a fuel pump module (18). The fuel pump module (18) includes a cup-like reservoir (34) which houses a fuel pump (46) and carries along its outer side wall (36) a fuel level sender unit (32). A float arm (60) extends pivotally from the fuel level sender (32) and swings up and down as the level of fuel in the tank (14) changes. The float arm (60) is pivotally supported on a carrier (58) attached to the side wall (36) of the reservoir (34). A sliding interface (62) is disposed along the side wall (36) of the reservoir (34) for slidably receiving and securing the carrier (58) along a captured alignment path. The fuel level sender (32) can be infinitely positioned in the longitudinal direction along the sliding interface (62) during assembly of the fuel pump module (18).