Cummins Filtration Ip, Inc.

Yiming Z Jiang

Gregory D Shope

Jared M Gwin

Sainath Reddy Racha

Barry Mark Verdegan

Zemin Jiang

Charles W Hawkins

A filter assembly has a qualified filter element that filters fuel, a filter housing for the qualified filter element and a water-in-fuel sensor that senses presence of water in the filter housing. An electrical resistance of the water-in-fuel sensor changes based upon whether the qualified filter element is installed in the housing. A filter assembly can also have a plurality of magnetic elements disposed on at least one of the filter housing and the qualified filter element. A plurality of wires are disposed on at least the other of the filter housing and the qualified filter element. The control circuit determines that the qualified filter element is installed in the filter housing based on a change in the electrical current in the plurality of wires.

Filters, filter assemblies, filter systems and methods for identifying installation of qualified filter elements

A fuel filtration apparatus for use in an internal combustion engine comprises an interrupter valve in a flow path from an inlet port of a filter head to a compliant filter. The interrupter valve has an open state and a closed state. In the open state a protruding member of the filter depresses a bottom end of the valve and opens the flow path when the compliant filter is connected to the filter head. The interrupter valve also has a closed state wherein the flow path is closed in the absence of the protruding member of the filter (as with a non-compliant filter).

Filter with protruding member for engaging valve in head

Growing community of inventors

Cookeville, TN, United States of America

Yiming Z Jiang