Self cleaning by-pass filtration arrangement

Details Self cleaning by-pass filtration arrangement Self cleaning by-pass filtration arrangement

1989-04-10

1990-03-06

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

210132, F01M 100

Patent

active

049056441

ABSTRACT:
In a lubrication circuit for a turbo-engine in which the main filter is provided with a by-pass circuit including a by-pass valve and a relief filter, a return circuit is connected between the by-pass circuit, downstream of the by-pass valve, and a point situated upstream of the supply pump of the lubrication circuit, the return circuit including throttling means. During normal operation of the lubrication circuit, a portion of the clean fluid from the main filter is diverted to the throttled return circuit, thus flowing through the relief filter counter to the direction of fluid flow therethrough when the main filter is clogged and the by-pass valve is open, thereby effecting automatic cleaning of the relief filter.

REFERENCES:
patent: 2425700 (1947-08-01), Le Clair
patent: 3120490 (1964-02-01), Samson
patent: 3432005 (1969-03-01), Gates
patent: 3485369 (1969-12-01), Voorheis
patent: 3771624 (1973-11-01), Forgeron
patent: 4512299 (1985-04-01), Egan et al.
patent: 4615800 (1986-10-01), Stifelman et al.

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