Filter for lowering harmful crankcase emissions in an internal c

Details Filter for lowering harmful crankcase emissions in an internal c Filter for lowering harmful crankcase emissions in an internal c

1991-03-25

1992-05-19

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123574, 123 4186, F02M 2500

Patent

active

051138360

ABSTRACT:
Apparatus for receiving crankcase emissions from an internal combustion engine and for separating the liquid portions of the emissions from the gaseous portion thereof. The apparatus includes a mounting flange, an opening for the return of the liquids to the engine, and at least one layer of filtering material. In one embodiment, the filtering material may be soaked with oil. Another embodiment has a screw mounted in the housing, and positioned to retard the flow of emissions exiting from the housing. The apparatus includes an outlet for return of the gaseous portion of the emissions to return to the combustion chamber via the PCV line or the induction manifold.

REFERENCES:
patent: Re30682 (1981-07-01), Bush
patent: 3877451 (1975-04-01), Lipscomb
patent: 4167164 (1979-09-01), Bachmann
patent: 4502424 (1985-03-01), Katoh et al.
patent: 4886033 (1989-12-01), Betterton et al.

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