EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

An exhaust purification device for an internal combustion engine, in which a reducing agent is diffused and resistance to exhaust gas is reduced. The exhaust purification device has a reducing agent addition valve (5) for ejecting the reducing agent; an installation section (4) on which the reducing agent addition valve (5) is installed and having a space that is located outside the flow of exhaust gas flowing in an exhaust path (2) of the internal combustion engine (1) and into which the reducing agent addition valve (5) ejects the reducing agent; and a collision section (41) located at the installation section (4) and with which the reducing agent ejected from the reducing agent addition valve (5) collides. The reducing agent is ejected from the reducing agent addition valve (5) toward the collision section (41) and toward the exhaust downstream of the reducing agent addition valve (5).