Oil separator for crankcase fumes

Details Oil separator for crankcase fumes Oil separator for crankcase fumes

1990-03-26

1991-06-11

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123 4186, F02M 2500

Patent

active

050223763

ABSTRACT:
An oil separator device for removing a substantial portion of the oil contained in the crankcase fumes of an internal combustion engine. The device is designed to be mounted on the inside of a rocker arm cover of the engine as a part of the crankcase ventilation system. Internal baffles direct a laminar flow of crankcase fumes through the separator canister along a folded path from an inlet in the bottom of the canister to an outlet in the top. Partially isolated channels extend along opposite edges of the flow path. Oil in the fumes attaches itself to the internal surfaces of the separator and flows down these surfaces, which are inclined, to a sump in the bottom. A tubular assembly connected to the bottom of the separator provides combined fume inlet and oil return passageways. The distal end of this tubular assembly has a special configuration which tends to prevent the upward flow of fumes through the oil return passageway, enhance the downward return flow of separated oil therein and prevent the reintroduction of returning oil into the fume stream inlet.

REFERENCES:
patent: 4453525 (1984-06-01), Debruler
patent: 4502424 (1985-03-01), Katoh et al.
patent: 4565164 (1986-01-01), Satoh et al.
patent: 4569323 (1986-02-01), Okumura
patent: 4627406 (1986-12-01), Namiki et al.
patent: 4723529 (1988-02-01), Yokoi et al.

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