EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine capable of mixing a reducer with exhaust gas while sufficiently securing an opportunity of the contact of the reducer and the exhaust gas utilizing a casing having a wide space. SOLUTION: An airflow generating chamber 25 for changing an exhaust gas flow from one end into a doughnut-shaped vortex flowβin which small vortex flows are arranged continuously along the body inner surface of the casing is formed in the casing 6. A spray nozzle 20 for spraying the reducer in a wide angle from the center toward the doughnut-shaped vortex flowβgenerated on the body inner surface is provided at the other end side wall surface of the airflow generating chamber. Since the reducer is sprayed into the doughnut-shaped vortex flow of the exhaust gas swirling on the body section inner surface of the casing from the center of the vortex flow toward the vortex flow, the reducer and the exhaust gas can be sufficiently mixed. COPYRIGHT: (C)2011,JPO&INPIT