Fuel filtering system with valve
AssigneeFederal-Mogul World Wide, Inc.
InventorsRichard W. Harvey, Larry J. Tipton
Life of this patent
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Abstract
A fuel filtering system having a valve which prevents the flow of fuel in the absence of a fuel filter. The filtering system includes a housing in which a fuel pump is at least partially disposed. A valve mechanism is located on the discharge side of the fuel pump and includes a valve member which is movable between open and closed positions which, respectively, allow and prevent fluid flow through the fuel line. A biasing member is provided for biasing the valve member into the closed position. The valve member is engaged by the mounting of the fuel filter to thereby open the valve mechanism. In the absence of an installed fuel filter, the valve member remains in the closed position to prevent the flow of unfiltered fuel to the engine.
Claims14
A fuel filtering system for use in a fuel line extending between a fuel source and an engine, said system comprising:
- a fuel pump operably disposed in the fuel line between the fuel source and the engine;
- a valve member operably disposed in the fuel line between said fuel pump and the engine, said valve member having an open position and a closed position, said valve member permitting passage of fuel through the fuel line when in said open position and preventing passage of fuel through the fuel line when in said closed position;
- a biasing member biasing said valve member towards said closed position;
- a fuel filter mountable in said fuel filtering system, said fuel filter having a filter structure and a filter element extending from said filter structure, said filter element defining an interior volume, said fuel pump being at least partially disposed within said interior volume;
- and
- an actuating surface disposed on said valve member, said actuating surface being engageable to bias said valve member towards said open position and wherein mounting of said fuel filter in said fuel filtering system engages said fuel filter with said actuating surface and moves said valve member into said open position.
A fuel filtering system for use in a fuel line extending between a fuel source and an engine, said system comprising:
- a filter housing defining a filter cavity, said filter cavity defining a portion of the fuel line;
- a fuel pump operably disposed in the fuel line between the fuel source and the engine, said fuel pump at least partially disposed within said housing;
- a valve mechanism having a body defining a valve opening and a valve member operably disposed within said valve opening, said valve opening defining a second portion of the fuel line and disposed in the fuel line between the fuel pump and said filter cavity, said valve member having an open position and a closed position, said valve member permitting passage of fuel through the fuel line when in said open position and preventing passage of fuel through the fuel line when in said closed position;
- a biasing member biasing said valve member towards said closed position;
- a fuel filter mountable within said filter cavity, said fuel filter having a filter structure and a filter element extending from said filter structure, said filter element defining an interior volume, said fuel pump being at least partially disposed within said interior volume;
- and
- an actuating surface disposed on said valve member, said actuating surface being engageable to bias said valve member towards said open position and wherein mounting said fuel filter within said filter cavity engages said filter structure with said actuating surface and moves said valve member into said open position.
Dependencies are inferred from the claim text.