SYSTEM FOR THE RECIRCULATION OF EXHAUST GASES

摘要

The present invention relates to a recirculation system (1) for exhaust gas comprising: an air intake device (3) for an internal combustion engine having air intake ducts (30) to supply air to combustion cylinders (5), wherein each combustion cylinder (5) includes an air intake duct (30) of its own having an exhaust gas inlet orifice (32) for exhaust gas is respectively arranged. The system includes a recirculation circuit (7) for exhaust gas having a spraying rail (70) which includes an outlet orifice (72) for exhaust gas connected to the inlet orifice (32) of the air intake duct (30). A connection part between the inlet orifice (32) and the outlet orifice (72) is formed by a tapered coupling element (9). The tapered coupling element (9) includes a connection tube (90) connected to the outlet orifice (72) of the spraying rail (70). The connection tube (90) descends within the inlet orifice (32) to guide the exhaust gas discharged from the spraying rail (70) within the air intake duct (30). The connection tube (90) has a narrower diameter than a diameter of the inlet orifice (32) and includes a tapered connector (92) having an upper part (94) attached to the connection tube (90) and a lower part (96) attached to a circumference of the inlet orifice (32).