Crankcase Ventilation Inside-Out Flow Rotating Coalescer

An internal combustion engine crankcase ventilation rotating coalescer separating air from oil in blowby gas from said crankcase, comprising a coalescing filter assembly comprising an annular rotating coalescing filter element having an inner periphery defining a hollow interior, and an outer periphery defining an exterior, an inlet port supplying said blowby gas from said crankcase to said hollow interior, an outlet port delivering cleaned separated air from said exterior,

• wherein the direction of blowby gas flow is inside-out, radially outwardly from said hollow interior to said exterior, said blowby gas forced radially outwardly from said inner periphery by centrifugal force so to reduce clogging of said coalescing filter element otherwise caused by oil sitting on said inner periphery, and so as to open more area of said coalescing filter element to flow-through, whereby to reduce restriction and pressure-drop,
• wherein said centrifugal force pumps said blowby gas from said crankcase to said hollow interior, wherein pumping of said blowby gas from said crankcase to said hollow interior increases with increasing speed of rotation of said coalescing filter element, wherein said increased pumping of said blowby gas from said crankcase to said hollow interior reduces restriction across said coalescing filter element, and wherein a set of vanes are included in said hollow interior, the plurality of vanes enhancing said pumping.