Filter assembly with sump and check valve

Details Filter assembly with sump and check valve Filter assembly with sump and check valve

1999-06-10

2000-12-19

McMahon, Marguerite

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02B 2506

Patent

active

061615293

ABSTRACT:
A closed crankcase emission control assembly for an internal combustion engine includes a replaceable filter element having a ring of filter media; a first annular end cap sealed to one end of the media ring; a sump container defined by a second annular end cap sealed to the other end of the media ring and a cup-shaped valve pan fixed to the second end cap; and a check valve in the valve pan to block blow-by gas flow directly into the filter element during engine operation, and to allow collected oil flow out of the sump container during engine idle or shut-down. The filter element of the present invention is located in a filter housing including an inlet port to receive blow-by gasses from the engine crankcase, and an outlet port to provide the substantially oil and particulate free gasses to an induction system (e.g. a turbocharger) and back to the engine crankcase. A pressure control assembly can be provided with the emission control assembly to maintain acceptable levels of crankcase pressure.

REFERENCES:
patent: 3834365 (1974-09-01), Ussery
patent: 4370971 (1983-02-01), Bush
patent: 4409950 (1983-10-01), Goldberg
patent: 4580543 (1986-04-01), Aoki
patent: 5027784 (1991-07-01), Osawa et al.
patent: 5201301 (1993-04-01), Re
patent: 5564401 (1996-10-01), Dickson

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