APPARATUS AND SYSTEM FOR EFFICIENTLY RECIRCULATING AN EXHAUST GAS IN A COMBUSTION ENGINE

摘要

An apparatus and system are disclosed for efficiently recirculating an exhaust gas in a combustion engine. The apparatus (100) includes an intake air conduit (204) that accepts and promotes mixing of an intake air stream (112) and an EGR stream (107). The intake air stream moves in the direction of the axis of the intake air conduit. The EGR stream enters the intake air conduit within a volute (205) of decreasing area curled about the outside circumference of the intake air stream. The rate at which the volute encourages mixing of the EGR stream with the intake air stream is affected by the rate at which the volute's area decreases as the volute curls about the inside circumference of the intake air conduit, and by the angle of entry (212) for the EGR stream as directed by the volute.