Abgasreinigungsanlage und Verfahren zur Steuerung

摘要

The present invention provides an exhaust gas purifying apparatus 10 which can effectively purify an exhaust gas with the use of a plasma. The present exhaust gas purifying apparatus 10 comprises a NO x purifying catalyst 1 disposed in an exhaust gas pipe 11 for an internal combustion engine (ENG); a plasma generator 2 for converting a gas into a plasma and supplying the plasma to the exhaust pipe at the upstream of the NO x purifying catalyst; a switching device 3 for selectively supplying one of a recirculated exhaust gas 13 and air 12 as a gas to be converted into a plasma to the plasma generator 2; and an injector 4 for adding a reducing agent to the gas 14 to be converted into a plasma or a plasma 15 converted from the gas by the plasma generator. The present invention further provides a method for controlling the exhaust gas purifying apparatus.