Patent ID: 8114182
Filing Date: 2012-02-14
Classification: B01D,F01M

Abstract:
1. An internal combustion engine crankcase ventilation filter comprising a substantially planar low profile housing having a mating base and cover defining a coalescing filter chamber retaining a coalescer filter element when said base and said cover are mated to each other, said coalescer filter element and at least a selected one of said cover and said base having respective complemental first and second detents disabling mating of said base and said cover to each other with said coalescer filter element retained in said coalescing filter chamber unless said coalescer filter element has said first detent complementally interacting with said second detent, said housing having a flow path therethrough for crankcase gas from said engine, said flow path extending from a housing air-oil inlet then through said coalescer filter element then to a housing air outlet said coalescer filter element having an upstream face receiving an air-oil mixture along said flow path, and a downstream face along which said separated oil coalesces and from which said separated air is discharged along said flow path, said first detent is at one of said faces, said second detent extends proximate said one face and interfaces with said first detent in keyed relation, said second detent including a directional guide surface guiding and directing flow therealong and also turning the flow from a first flow direction to a second flow direction.