Intake apparatus for internal combustion engine

An intake apparatus for an internal combustion engine, comprising:

• an intake pipe forming an intake passage for introducing an intake air into a combustion chamber of the internal combustion engine;
• a cantilever airflow control valve including a valve shaft rotatably connected to an inner wall of the intake pipe, and a valve body of which one end is connected to the valve shaft to vary an opening area of the intake passage;
• an exhaust gas introducing portion recirculating the exhaust gas discharged from the combustion chamber into the intake pipe;
• and
• an exhaust gas guide means provided to the valve body of the airflow control valve for forming an exhaust gas passage which introduces the exhaust gas flowing from the exhaust gas introducing portion into the intake pipe adjacent another end of the valve body remote from the valve shaft, wherein
• the valve body swings around an axis of the valve shaft to vary a distance between said another end of the valve body and an upper wall of the intake pipe to vary the opening area of the intake passage;
• the exhaust gas guide means has an inlet of the exhaust gas passage in a vicinity of the exhaust gas introducing portion;
• the exhaust gas guide means has an outlet of the exhaust gas passage adjacent to said another end of the valve body, the outlet of the exhaust gas passage being formed along said another end of the valve body;
• the exhaust gas in the exhaust gas passage is suctioned into the intake passage by intake air flowing along an outer surface of the valve body;
• the intake pipe has a concave portion for accommodating the airflow control valve, and
• the outlet of the exhaust gas passage is closed by an inner surface of the concave portion when the airflow control valve is accommodated in the concave portion.