Egr valve for an internal combustion engine

Abstract

A butterfly EGR valve for the regulation of the flow rate of fluid flowing in a fluid passage comprising a valve body pivotable about a rotation axis, the valve body having a first valve plate and a second flexible valve plate pivotally connected thereto, and urging means keeping the second flexible valve plate disposed at angular distance from first valve plate, the angle between the plane defined by the second valve plate and the plane defined by the first valve plate being less than or equal to 180°, the valve body being able to move at least in the successive positions: fully opened position, in which fluid flows through the fluid passage without being interrupted; partially closed position, in which fluid flows through the fluid passage through reduced aperture defined by the first valve plate; and fully closed position, in which fluid cannot flow through the fluid passage.

Dependencies are inferred from the claim text.