Patent ID: 7261096

Claim:
A system for controlling the mixture of air and recirculating exhaust gas, comprising: an air conduit defined by a wall for communicating air therethrough; an exhaust gas inlet passing through the wall of said air conduit for introducing exhaust gas into said air conduit; a sleeve at least partly disposed in said air conduit, said sleeve having an inlet end through which air enters said sleeve and an outlet end through which air flowing through said sleeve exits said sleeve into said air conduit, the outlet end of said sleeve being disposed in said air conduit; and a streamlined body disposed in said air conduit; wherein the cross-sectional area of the outlet end of said sleeve is reduced; and wherein the outlet end of said sleeve is positionable along said air conduit to at least partly occlude said exhaust gas inlet, said sleeve is movable along said air conduit to vary the extent of occlusion of said exhaust gas inlet in order to regulate flow of exhaust gas into said air conduit, and said sleeve is positionable to fully occlude said exhaust gas inlet in order to prevent flow of exhaust gas into said air conduit.