Patent ID: 6422217
Filing Date: 2002-07-23
Classification: F02M

Abstract:
An exhaust gas recirculation (EGR) system is adapted for use with an internal combustion engine, the exhaust gas recirculation (EGR) system comprising:an exhaust gas recirculation (EGR) conduit interposed an exhaust manifold structure of the engine and an atmospheric exhaust structure; and a valve mechanism disposed within said exhaust gas recirculation (EGR) conduit and movable between a fully closed position at which an entrance to said exhaust gas recirculation (EGR) conduit is blocked and all exhaust gas from the engine passes to atmospheric exhaust through said atmospheric exhaust structure, and a fully opened position at which said valve mechanism opens said entrance to said exhaust gas recirculation (EGR) conduit and partially occludes said atmospheric exhaust structure such that a sufficiently large back pressure is developed with respect to said atmospheric exhaust structure such that exhaust gases are forced through said exhaust gas recirculation (EGR) conduit.