Federal-mogul Corporation

Robert McGaughey

Richard W Harvey

John E Troxler

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.

Fuel system electro-static potential differential level sensor element and hardware/software configuration

The system and method for determining the operational condition of an electric fuel pump (). The test apparatus () is configured to perform first, second and third tests. During the first test, a low voltage, low current signal is applied to produce an inductive reflectance from the pump armature winding. During the second test, continuity is assessed in the coil winding circuit. During the third test, a higher power, short duration pulse is applied to create rotational movement of the pump armature for the purpose of detecting mechanical and/or electrical issues not otherwise discerned from the prior tests. An optional fourth test may be conducted in which the pump () is run for a short period of time at standard operating power to generate a current waveform. Collected test data is compared to stored reference data sets using a processor contained within the test apparatus (). If collected test data corresponds within an acceptable threshold range to the reference data, a PASS signal is generated.

Electric fuel pump tester and method

This invention provides an electric fuel pump tester that allows a technician to simulate the real-life operation of the electrical system of the vehicle, i.e., when the fuel pump is installed. The present invention provides a tester that includes a load that is similar to that of an installed fuel pump. In this manner, a technician may monitor simulated real-life operation of the vehicle's electrical system.

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Bringhurst, IN, United States of America

Robert McGaughey