Warning device and method for fuel filtering systems

Details Warning device and method for fuel filtering systems Warning device and method for fuel filtering systems

1976-06-25

1977-10-11

Lutter, Frank W.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

137172, 210 86, 210119, 210123, 210430, 210432, B01D 3700, C02B 302

Patent

active

040534057

ABSTRACT:
A fuel filtering system comprises a case having a cartridge-type filter disposed therein, along with a separator which defines a reservoir. Fuel, such as diesel fuel, is adapted to normally enter an inlet to the case, flow through the filter and thence to an outlet of the case for engine consumption purposes. A valve member, having a specific gravity less than water but greater than that of the fuel, is movably mounted adjacent to the outlet. When the level of water in the reservoir exceeds a predetermined level, the valve member will float on the water and move upwardly to at least partially close-off communication of fuel to the outlet to thus adversely affect engine performance whereby the vehicle operator is alerted to the water-in-fuel problem. In a first embodiment of this invention, such valve member comprises a tubular member mounted exteriorly on a tube defining the outlet therein whereas in a second such embodiment the valve member comprises a spherical ball movably mounted in the tubular member.

REFERENCES:
patent: 2170247 (1939-08-01), Lambert
patent: 2311697 (1943-02-01), Samiran
patent: 2525154 (1950-10-01), Taylor
patent: 2680538 (1954-06-01), Fishburn

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