Patent ID: 8361179

Claim:
A cyclone separator device designed to separate and recover liquid oil particles contained in recirculated crank case gases of an internal combustion engine, particularly of a motor vehicle, the cyclone device comprising, from top to bottom: an upper tangential gas inlet, a cylindrical oil-collection zone, a conical liquid-oil-recovery zone, a zone for discharging and/or storing the oil that has been separated, and an upper axial gas outlet opening, wherein a body with symmetry of revolution is mounted so that it can move vertically inside the cyclone in the cylindrical oil-collection zone and/or in the conical oil-recovery zone, the body delimiting with walls of said cylindrical oil-collection zone and/or said conical oil-recovery zone, an annular gap such that a passage cross section for gases varies according to a self-adjusting heightwise position of the body as a function of a flow rate of the gases, it thus being capable for a speed of the gases to remain substantially constant for variable gas flow rates.