Intake manifold for mixing and supplying air and exhaust gas recirculation

The invention refers to an intake manifold (10) for mixing and supplying air and exhaust gas recirculation (EGR) to an internal combustion engine (12), comprising:a housing (14) for attaching to a side of an engine,;an air intake port (26) projecting from a first outer wall (22);an EGR valve chamber (56, 58) extending between the first and second outer walls (20, 22);an EGR valve assembly (34, 36) inserted through the valve opening and into the valve chamber (56, 58) through a selected wall (20,22); andan EGR inlet chamber (50) extending between the first and second walls (20, 22), said selected wall (20, 22) having an EGR supply opening formed therein; andan EGR supply conduit (30) connected to the inlet chamber (50) through the supply opening in the selected wall (20, 22).